FreeCalypso > hg > freecalypso-sw
annotate gsm-fw/g23m-aci/l2p/l2p.c @ 1021:8b52011dc66a
doc/Pirelli-Howto: update for the current situation
author | Mychaela Falconia <falcon@ivan.Harhan.ORG> |
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date | Sat, 23 Apr 2016 06:19:09 +0000 |
parents | eedbf248bac0 |
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rev | line source |
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1 /* |
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2 +----------------------------------------------------------------------------- |
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3 | Project : BAT L2P () |
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4 | Modul : BAT_L2P |
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5 +----------------------------------------------------------------------------- |
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6 | Copyright 2005 Texas Instruments Berlin, AG |
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7 | All rights reserved. |
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8 | |
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9 | This file is confidential and a trade secret of Texas |
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10 | Instruments Berlin, AG |
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11 | The receipt of or possession of this file does not convey |
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12 | any rights to reproduce or disclose its contents or to |
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13 | manufacture, use, or sell anything it may describe, in |
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14 | whole, or in part, without the specific written consent of |
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15 | Texas Instruments Berlin, AG. |
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16 +----------------------------------------------------------------------------- |
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17 | Purpose : L2P function definitions |
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18 +----------------------------------------------------------------------------- |
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19 */ |
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20 #include "typedefs.h" /* to get TI data types */ |
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21 #include "vsi.h" /* to get a lot of macros */ |
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22 #include "l2p_types.h" |
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23 #include "l2p.h" |
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24 |
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25 #include "string.h" |
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26 |
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27 T_L2P_CONTROL_BLOCK *l2p_control_block_list = (T_L2P_CONTROL_BLOCK *)0; |
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28 |
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29 /* |
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30 ** Local function declarations |
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31 */ |
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32 static char *L2P_write_data_to_seg(char *writePtr, char *dataPtr, U16 dataSize, U16 remain_seg_size, |
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33 U16 *bytesWritten); |
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34 |
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35 static char *L2P_read_data_from_seg(char *readPtr, char *writePtr, U16 dataSize, U16 remain_seg_size, |
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36 U16 *bytesWritten); |
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37 |
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38 |
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39 /* |
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40 ** L2P function definitions |
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41 */ |
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42 |
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43 /* |
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44 +--------------------------------------------------------------------+ |
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45 | PROJECT: BAT L2P MODULE: L2P | |
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46 | STATE : code ROUTINE: L2P_Configure | |
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47 +--------------------------------------------------------------------+ |
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48 |
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49 PURPOSE : L2P_Configure will initiaise the L2P for each instance of BAT Lib or BAT Module |
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50 that wishes to use its services. The following is a list of the parameters, and their uses: |
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51 |
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52 batId : A identifer to uniquely identify each instance of BAT using this L2P |
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53 mem : A block of memory for L2P to use as a Control Block (L2P cannot allocate its own memory) |
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54 num_mux_chnls: The number of clients being supported at the application end (this information is |
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55 passed to BAT Module as part of the startup process) |
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56 protocolId : The protocol being used to communicate with the peer entity |
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57 maxMTU : Maximum size of a transport unit. |
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58 xxx_CB : These are callback functions, provided by the BAT Lib or BAT Module, to provide necessary |
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59 services to L2P to get Send and Receive buffers, Send the Frames and receive fully |
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60 completed packets |
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61 |
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62 */ |
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63 T_L2P_STATUS L2P_Configure(U8 batid, void *mem, |
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64 T_L2P_SUPPORTED_PROTOCOLS protocolId, |
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65 U16 maxMTU, |
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66 L2P_Get_Tx_Buf_CB Get_Tx_Buf_Cb, |
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67 L2P_Get_Rx_Buf_CB Get_Rx_Buf_Cb, |
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68 L2P_Get_Next_Seg_CB Get_Next_Seg_Cb, |
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69 L2P_Send_Frame_CB Send_Frame_Cb, |
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70 L2P_Msg_Rxd_CB Msg_Rxd_Cb) |
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71 { |
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72 T_L2P_CONTROL_BLOCK **curr_lcb_next_ptr; |
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73 T_L2P_CONTROL_BLOCK *current_l2p_cntrl_block; |
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74 T_L2P_CONTROL_BLOCK *this_l2p_cntrl_block = (T_L2P_CONTROL_BLOCK *)mem; |
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75 |
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76 TRACE_EVENT("L2P_Configure"); |
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77 /* |
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78 ** check the incoming paramters to ensure they are valid |
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79 */ |
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80 if (mem == (void *)0) |
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81 { |
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82 TRACE_EVENT("L2P_Configure - Mem pointer Invalid"); |
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83 return L2P_STAT_INVALID_PARAMETER; |
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84 } |
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85 |
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86 /* protocolId is a non-negative value(so <0 check not reqd) */ |
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87 if ( protocolId >= L2P_SP_MAX_NUM ) |
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88 { |
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89 TRACE_EVENT("L2P_Configure - Protocol Id Invalid"); |
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90 return L2P_STAT_INVALID_PARAMETER; |
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91 } |
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92 |
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93 if (maxMTU <= (L2P_FRAME_CONTROL_SIZE)) |
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94 { |
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95 TRACE_EVENT("L2P_Configure - Max MTU value Invalid"); |
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96 return L2P_STAT_INVALID_PARAMETER; |
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97 } |
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98 |
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99 if (Get_Tx_Buf_Cb == (L2P_Get_Tx_Buf_CB)0) |
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100 { |
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101 TRACE_EVENT("L2P_Configure - Get Tx Buffer Callback Invalid"); |
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102 return L2P_STAT_INVALID_PARAMETER; |
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103 } |
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104 |
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105 if (Get_Rx_Buf_Cb == (L2P_Get_Rx_Buf_CB)0) |
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106 { |
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107 TRACE_EVENT("L2P_Configure - Get Rx Buffer Callback Invalid"); |
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108 return L2P_STAT_INVALID_PARAMETER; |
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109 } |
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110 |
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111 if (Get_Next_Seg_Cb == (L2P_Get_Next_Seg_CB)0) |
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112 { |
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113 TRACE_EVENT("L2P_Configure - Get Next Segment Callback Invalid"); |
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114 return L2P_STAT_INVALID_PARAMETER; |
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115 } |
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116 |
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117 if (Send_Frame_Cb == (L2P_Send_Frame_CB)0) |
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118 { |
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119 TRACE_EVENT("L2P_Configure - Send Frame Callback Invalid"); |
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120 return L2P_STAT_INVALID_PARAMETER; |
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121 } |
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122 |
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123 if (Msg_Rxd_Cb == (L2P_Msg_Rxd_CB)0) |
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124 { |
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125 TRACE_EVENT("L2P_Configure - Message Received Callback Invalid"); |
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126 return L2P_STAT_INVALID_PARAMETER; |
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127 } |
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128 |
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129 /* |
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130 ** initialise the data in the passed block of data |
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131 */ |
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132 this_l2p_cntrl_block->batId = batid; |
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133 this_l2p_cntrl_block->frameId = 0; |
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134 this_l2p_cntrl_block->protocolId = protocolId; |
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135 this_l2p_cntrl_block->maxMTU = maxMTU; |
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136 this_l2p_cntrl_block->rxBuf = (char *)0; |
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137 this_l2p_cntrl_block->muxId = 0xFD; /* Any value here will be a valid client Id, but this one is unlikely ... it MUST be initialised correctly before each use */ |
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138 this_l2p_cntrl_block->cmdTagReceived = 0; |
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139 this_l2p_cntrl_block->receivedCmdTag = 0; |
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140 this_l2p_cntrl_block->dataSize = 0; |
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141 this_l2p_cntrl_block->bytesToBeRead = 0; |
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142 this_l2p_cntrl_block->dataToBeRead = (char *)0; |
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143 |
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144 this_l2p_cntrl_block->callbacks.Get_TxBuf_Cb = Get_Tx_Buf_Cb; |
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145 this_l2p_cntrl_block->callbacks.Get_RxBuf_Cb = Get_Rx_Buf_Cb; |
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146 this_l2p_cntrl_block->callbacks.Get_Next_Seg_Cb = Get_Next_Seg_Cb; |
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147 this_l2p_cntrl_block->callbacks.Send_Frame_Cb = Send_Frame_Cb; |
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148 this_l2p_cntrl_block->callbacks.Msg_Rxd_Cb = Msg_Rxd_Cb; |
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149 |
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150 this_l2p_cntrl_block->next = (void *)0; |
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151 |
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152 /* |
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153 ** Check that the batId is not already in use |
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154 */ |
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155 if (l2p_control_block_list != (T_L2P_CONTROL_BLOCK *)0) |
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156 { |
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157 /* |
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158 ** Parse the list until either the batId is found (which would be an error) |
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159 ** or the batId is larger than the one passed (ie the current batId is not in the list, and is thereofre valid) |
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160 */ |
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161 curr_lcb_next_ptr = &l2p_control_block_list; |
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162 current_l2p_cntrl_block = l2p_control_block_list; |
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163 |
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164 while ((current_l2p_cntrl_block != (T_L2P_CONTROL_BLOCK *)0) && |
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165 (current_l2p_cntrl_block->batId < batid)) |
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166 { |
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167 /* |
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168 ** Jump to the next node on the linked list, |
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169 ** keeping track of the previous node so we can add in the details later |
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170 */ |
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171 curr_lcb_next_ptr = ¤t_l2p_cntrl_block->next; |
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172 current_l2p_cntrl_block = current_l2p_cntrl_block->next; |
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173 } |
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174 |
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175 if (current_l2p_cntrl_block == (T_L2P_CONTROL_BLOCK *)0) |
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176 { |
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177 /* |
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178 ** BAT Id was not found ... and we've reached the end of the list |
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179 ** need to add the details at the end of the linked list |
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180 */ |
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181 *curr_lcb_next_ptr = this_l2p_cntrl_block; |
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182 } |
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183 else if (current_l2p_cntrl_block->batId == batid) |
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184 { |
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185 /* |
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186 ** BAT Id was found in the current list ... it is already configured ... send an error |
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187 */ |
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188 TRACE_EVENT("L2P_Configure - BAT Id Already In Use"); |
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189 return L2P_STAT_BAT_ID_ALREADY_EXISTS; |
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190 } |
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191 else |
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192 { |
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193 /* |
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194 ** BAT Id was not found ... but we haven't reached the end of the list |
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195 ** need to add the details in the middle of the linked list |
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196 */ |
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197 this_l2p_cntrl_block->next = *curr_lcb_next_ptr; |
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198 *curr_lcb_next_ptr = this_l2p_cntrl_block; |
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199 } |
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200 } |
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201 else |
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202 { |
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203 /* |
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204 ** The linked list of BAT and L2P Control blocks is empty, this is the first instance of BAT |
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205 ** to register with the L2P. Add the details as the first entry to the linked list. |
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206 */ |
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207 l2p_control_block_list = this_l2p_cntrl_block; |
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208 } |
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209 return L2P_STAT_SUCCESS; |
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210 } |
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211 |
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212 /* |
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213 +--------------------------------------------------------------------+ |
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214 | PROJECT: BAT L2P MODULE: L2P | |
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215 | STATE : code ROUTINE: L2P_Remove | |
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216 +--------------------------------------------------------------------+ |
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217 |
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218 PURPOSE : L2P_Remove will delete a BAT from L2Ps service list. The following is a list of |
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219 the parameters, and their uses: |
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220 |
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221 batId : A identifer to uniquely identify each instance of BAT using this L2P |
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222 |
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223 */ |
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224 T_L2P_STATUS L2P_Remove(U8 batid) |
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225 { |
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226 T_L2P_CONTROL_BLOCK **curr_lcb_next_ptr; |
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227 T_L2P_CONTROL_BLOCK *current_l2p_cntrl_block; |
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228 |
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229 TRACE_EVENT("L2P_Remove()"); |
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230 |
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231 if (l2p_control_block_list == (T_L2P_CONTROL_BLOCK *)0) |
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232 { |
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233 return L2P_STAT_NO_SUCH_BAT_ID; |
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234 } |
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235 |
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236 if (l2p_control_block_list->batId == batid) |
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237 { |
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238 l2p_control_block_list = l2p_control_block_list->next; |
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239 return L2P_STAT_SUCCESS; |
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240 } |
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241 |
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242 /* |
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243 ** Parse the list until either the batId is found |
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244 ** or the batId is larger than the one passed (which would be an error) |
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245 */ |
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246 curr_lcb_next_ptr = &l2p_control_block_list; |
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247 current_l2p_cntrl_block = l2p_control_block_list; |
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248 |
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249 while ((current_l2p_cntrl_block != (T_L2P_CONTROL_BLOCK *)0) && |
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250 (current_l2p_cntrl_block->batId < batid)) |
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251 { |
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252 /* |
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253 ** Jump to the next node on the linked list, |
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254 ** keeping track of the previous node so we can add in the details later |
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255 */ |
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256 curr_lcb_next_ptr = ¤t_l2p_cntrl_block->next; |
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257 current_l2p_cntrl_block = current_l2p_cntrl_block->next; |
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258 } |
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259 |
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260 if (current_l2p_cntrl_block == (T_L2P_CONTROL_BLOCK *)0) |
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261 { |
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262 /* |
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263 ** BAT Id was not found and we've reached the end of the list |
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264 */ |
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265 return L2P_STAT_NO_SUCH_BAT_ID; |
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266 } |
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267 else if (current_l2p_cntrl_block->batId == batid) |
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268 { |
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269 /* |
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270 ** BAT Id was found in the current list ... remove the control balock from the linked list |
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271 */ |
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272 *curr_lcb_next_ptr = current_l2p_cntrl_block->next; |
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273 } |
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274 else |
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275 { |
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276 /* |
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277 ** BAT Id was not found ... the current batid must be greater tahn the one passed |
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278 */ |
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279 return L2P_STAT_NO_SUCH_BAT_ID; |
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280 } |
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281 |
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282 return L2P_STAT_SUCCESS; |
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283 } |
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284 |
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285 /* |
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286 +--------------------------------------------------------------------+ |
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287 | PROJECT: BAT L2P MODULE: L2P | |
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288 | STATE : code ROUTINE: L2P_Send | |
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289 +--------------------------------------------------------------------+ |
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290 |
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291 PURPOSE : L2P_Send will receive an AT Command Tag and its data from the L2P User, and depending on the |
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292 MTU size of the communications link being used, split the data into multiple frames and send those |
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293 Frames across the link. The following is a list of the parameters, and their uses: |
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294 |
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295 batId : A identifer to uniquely identify each instance of BAT using this L2P |
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296 muxId : A client identifier to identify which clinet of the BAT instance either sent, or is to receive, the data. |
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297 dataTag : This is a BAT Command or Response TAG to identify which AT command is being sent. This TAG |
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298 will be sent to the peer along with the data. |
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299 dataBuf : pointer to the payload data to send |
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300 dataLen : length of the data in the 'dataBuf' |
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301 errVal : If there is a driver error, L2P_Send will return L2P_STAT_UNKNOWN_ERROR and will provide |
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302 the driver error code in errVal. This is because the number may be positive, and all errors in |
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303 T_L2P_STATUS are negative. |
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304 |
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305 */ |
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306 T_L2P_STATUS L2P_Send(U8 batId, U8 muxId, U32 dataTag, void *dataBuf, U16 dataLen, int *errVal) |
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307 { |
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308 T_L2P_CONTROL_BLOCK *curr_l2p_cntrl_block; |
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309 T_L2P_FRAME_CONTROL_BYTES frameCntrlBytes; |
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310 U16 bytesRemainingToBeSent; |
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311 U16 frameCntrlBytesToBeWritten; |
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312 U16 bytesToBeWritten = 0; |
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313 U16 bytesWritten; |
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314 U16 frameSizeReq; |
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315 U16 totalBufSize; |
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316 U16 segSize; |
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317 U16 remainingSegSize; |
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318 U16 totalSegSize; |
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319 char *curTxSeg; |
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320 char *dataToBeWritten = NULL; |
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321 char *frameCntrlDataToBeWritten; |
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322 void *seg_hdr; |
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323 char *txWritePtr; |
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324 char cmdTagWritten = 0; |
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325 int drvRetVal = 0; |
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326 |
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327 TRACE_EVENT("L2P_Send()"); |
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328 |
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329 /* |
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330 ** Check that the Bat Id is valid |
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331 */ |
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332 |
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333 curr_l2p_cntrl_block = l2p_control_block_list; |
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334 |
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335 while ((curr_l2p_cntrl_block != (T_L2P_CONTROL_BLOCK *)0) && |
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336 (curr_l2p_cntrl_block->batId != batId)) |
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337 { |
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338 curr_l2p_cntrl_block = curr_l2p_cntrl_block->next; |
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339 } |
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340 |
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341 if (curr_l2p_cntrl_block == (T_L2P_CONTROL_BLOCK *)0) |
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342 { |
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343 return L2P_STAT_NO_SUCH_BAT_ID; |
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344 } |
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345 |
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346 /* |
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347 ** Check the rest of the parameters |
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348 */ |
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349 if ((dataBuf == (void *)0) && (dataLen != 0)) |
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350 { |
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351 TRACE_EVENT("L2P_Send() - Invalid Data Buffer Pointer"); |
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352 return L2P_STAT_INVALID_PARAMETER; |
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353 } |
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354 |
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355 if (errVal == (int *)0) |
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356 { |
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357 TRACE_EVENT("L2P_Send() - Invalid Error Return Pointer"); |
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358 return L2P_STAT_INVALID_PARAMETER; |
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359 } |
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360 |
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361 /* |
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362 ** The format of an L2 frame for BAT will be as follows : |
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363 ** |
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364 ** For the first frame |
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365 ** ---------------------------------------------------------------- |
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366 ** | L2 Control Bytes | BAT Cmd TAG | BAT Command Data | |
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367 ** | (n Bytes) | 4 Bytes | (Remaining Bytes) | |
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368 ** ---------------------------------------------------------------- |
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369 ** |
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370 ** For any subsequent frames |
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371 ** ---------------------------------------------------------------- |
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372 ** | L2 Control Bytes | BAT Command Data | |
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373 ** | (n Bytes) | (Remaining Bytes) | |
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374 ** ---------------------------------------------------------------- |
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375 */ |
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376 |
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377 bytesRemainingToBeSent = dataLen + sizeof(int); |
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378 |
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379 /* |
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380 ** Fill in the Frame Control Bytes |
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381 */ |
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382 frameCntrlBytes.dataLen = dataLen; |
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383 frameCntrlBytes.frame_id = 0; /* Each new packet will start with a frame Id of 0 */ |
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384 frameCntrlBytes.frame_type = L2P_FT_UNKNOWN_FRAME_TYPE; |
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385 frameCntrlBytes.mux_id = muxId; |
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386 frameCntrlBytes.protocol_id = (U8)curr_l2p_cntrl_block->protocolId; |
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387 |
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388 while (bytesRemainingToBeSent >0) |
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389 { |
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390 /* |
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391 ** Calculate the required size of Transmit buffer and how many frames will be required |
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392 */ |
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393 if ((bytesRemainingToBeSent + L2P_FRAME_CONTROL_SIZE) > curr_l2p_cntrl_block->maxMTU) |
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394 { |
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395 /* |
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396 ** Data will not fit in a single frame, so will need to be fragmented and reassembled |
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397 */ |
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398 frameSizeReq = curr_l2p_cntrl_block->maxMTU; |
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|
399 } |
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400 else |
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|
401 { |
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402 /* |
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403 ** Data will fit in a single frame, so will be sent complete |
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404 */ |
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405 frameSizeReq = bytesRemainingToBeSent + L2P_FRAME_CONTROL_SIZE; |
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406 } |
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407 |
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408 /* |
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409 ** Request the Transmit frame from the buffer |
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410 */ |
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411 curTxSeg = (char *)curr_l2p_cntrl_block->callbacks.Get_TxBuf_Cb(batId, frameSizeReq, |
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412 &seg_hdr, &totalBufSize, &segSize); |
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413 |
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414 if (curTxSeg == (char *)0) |
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|
415 { |
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416 return L2P_STAT_UNABLE_TO_GET_BUFFER; |
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417 } |
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418 |
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|
419 totalSegSize = remainingSegSize = segSize; |
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parents:
diff
changeset
|
420 |
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parents:
diff
changeset
|
421 /* |
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parents:
diff
changeset
|
422 ** Now we know the size of buffer given so we can tell whether the entire message will fit in a single frame |
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parents:
diff
changeset
|
423 */ |
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parents:
diff
changeset
|
424 if (totalBufSize >= (bytesRemainingToBeSent + L2P_FRAME_CONTROL_SIZE)) |
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parents:
diff
changeset
|
425 { |
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parents:
diff
changeset
|
426 if (frameCntrlBytes.frame_type == L2P_FT_UNKNOWN_FRAME_TYPE) |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
427 frameCntrlBytes.frame_type = (U8)L2P_FT_COMPLETE_FRAME; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
428 else |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
429 frameCntrlBytes.frame_type = (U8)L2P_FT_END_FRAME; |
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parents:
diff
changeset
|
430 |
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parents:
diff
changeset
|
431 frameCntrlBytes.frameLen = bytesRemainingToBeSent + L2P_FRAME_CONTROL_SIZE; |
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parents:
diff
changeset
|
432 } |
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parents:
diff
changeset
|
433 else |
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parents:
diff
changeset
|
434 { |
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parents:
diff
changeset
|
435 if (frameCntrlBytes.frame_type == L2P_FT_UNKNOWN_FRAME_TYPE) |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
436 frameCntrlBytes.frame_type = (U8)L2P_FT_START_FRAME; |
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parents:
diff
changeset
|
437 else |
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parents:
diff
changeset
|
438 frameCntrlBytes.frame_type = L2P_FT_CONTINUATION_FRAME; |
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parents:
diff
changeset
|
439 |
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parents:
diff
changeset
|
440 frameCntrlBytes.frameLen = totalBufSize; |
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parents:
diff
changeset
|
441 } |
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parents:
diff
changeset
|
442 |
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parents:
diff
changeset
|
443 txWritePtr = curTxSeg; |
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parents:
diff
changeset
|
444 |
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parents:
diff
changeset
|
445 /* |
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parents:
diff
changeset
|
446 ** We can assume that the buffer will be at least big enough for the L2 Frame Header plus some data |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
447 ** |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
448 ** Write the L2 Frames Control Bytes |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
449 */ |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
450 frameCntrlBytesToBeWritten = L2P_FRAME_CONTROL_SIZE; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
451 frameCntrlDataToBeWritten = (char *)&frameCntrlBytes; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
452 |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
453 while (frameCntrlBytesToBeWritten > 0) |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
454 { |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
455 txWritePtr = L2P_write_data_to_seg(txWritePtr, frameCntrlDataToBeWritten, frameCntrlBytesToBeWritten, |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
456 remainingSegSize, &bytesWritten); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
457 frameCntrlBytesToBeWritten -= bytesWritten; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
458 remainingSegSize -= bytesWritten; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
459 frameCntrlDataToBeWritten += bytesWritten; |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
460 |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
461 /* |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
462 ** Frame Control Bytes are NOT included in the bytesRemainingToBeSent count so do not decrease the size! |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
463 */ |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
464 |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
465 if (txWritePtr == (char *)0) |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
466 { |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
467 /* |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
468 ** We have reached the end of the current Segment, so get the next. |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
469 */ |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
470 curTxSeg = curr_l2p_cntrl_block->callbacks.Get_Next_Seg_Cb(batId, seg_hdr, &seg_hdr, &segSize); |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
471 txWritePtr = curTxSeg; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
472 totalSegSize +=segSize; |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
473 remainingSegSize = segSize; |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
474 } |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
475 } |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
476 |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
477 /* |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
478 ** if necessary, write the cmd Tag into the Buffer |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
479 */ |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
480 if ((frameCntrlBytes.frame_type == L2P_FT_COMPLETE_FRAME) || |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
481 (frameCntrlBytes.frame_type == L2P_FT_START_FRAME)) |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
482 { |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
483 bytesToBeWritten = sizeof(dataTag); |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
484 dataToBeWritten = (char *)&dataTag; |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
485 |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
486 while ((txWritePtr != (char *)0) && /* There is still space in the buffer segement */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
487 (!cmdTagWritten)) /* The command Tag has not completed */ |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
488 { |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
489 txWritePtr = L2P_write_data_to_seg(txWritePtr, dataToBeWritten, bytesToBeWritten, |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
490 remainingSegSize, &bytesWritten); |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
491 bytesToBeWritten -= bytesWritten; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
492 remainingSegSize -= bytesWritten; |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
493 dataToBeWritten += bytesWritten; |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
494 |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
495 /* |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
496 ** Decrement the bytesRemainingToBeSent counter |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
497 */ |
eedbf248bac0
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parents:
diff
changeset
|
498 bytesRemainingToBeSent -= bytesWritten; |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
499 |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
500 if ((txWritePtr == (char *)0) && (totalSegSize < totalBufSize)) |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
501 { |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
502 /* |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
503 ** We have reached the end of the current Segment, so get the next. |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
504 */ |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
505 curTxSeg = curr_l2p_cntrl_block->callbacks.Get_Next_Seg_Cb(batId, seg_hdr, &seg_hdr, &segSize); |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
506 txWritePtr = curTxSeg; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
507 totalSegSize +=segSize; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
508 remainingSegSize = segSize; |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
509 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
510 |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
511 /* |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
512 ** If the Command Tag has been completed set a flag |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
513 */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
514 if (bytesToBeWritten == (U16)0) |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
515 { |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
516 cmdTagWritten = 1; |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
517 dataToBeWritten = (char *)dataBuf; /* Next Write the AT Command Data */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
518 bytesToBeWritten = dataLen; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
519 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
520 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
521 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
522 |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
523 if (dataToBeWritten EQ NULL) |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
524 { |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
525 return L2P_STAT_INVALID_PARAMETER; |
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526 } |
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527 /* |
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528 ** if txWritePtr is NULL at this point it is because a buffer has been completed ... drop out and perform |
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529 ** the next loop of the while statement to create the next L2 Frame in an new buffer. |
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530 */ |
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531 while ((bytesToBeWritten > 0) && /* There is still data to write */ |
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532 (txWritePtr != (char *)0)) /* There is still space in the buffer segement */ |
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533 { |
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534 txWritePtr = L2P_write_data_to_seg(txWritePtr, dataToBeWritten, bytesToBeWritten, |
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|
535 remainingSegSize, &bytesWritten); |
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536 bytesToBeWritten -= bytesWritten; |
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537 remainingSegSize -= bytesWritten; |
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|
538 dataToBeWritten += bytesWritten; |
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|
539 |
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540 /* |
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541 ** Decrement the bytesRemainingToBeSent counter |
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542 */ |
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543 bytesRemainingToBeSent -= bytesWritten; |
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|
544 |
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545 if ((txWritePtr == (char *)0) && (totalSegSize < totalBufSize)) |
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546 { |
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547 /* |
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548 ** We have reached the end of the current Segment, so get the next. |
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549 */ |
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550 curTxSeg = curr_l2p_cntrl_block->callbacks.Get_Next_Seg_Cb(batId, seg_hdr, &seg_hdr, &segSize); |
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551 txWritePtr = curTxSeg; |
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552 totalSegSize +=segSize; |
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553 remainingSegSize = segSize; |
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|
554 } |
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555 |
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556 if ((bytesToBeWritten == (U16)0) && /* We've finished writing the data */ |
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557 (!cmdTagWritten)) /* but that data was the Command Tag */ |
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|
558 { |
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559 /* |
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560 ** now we have to write the AT Command Data |
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|
561 */ |
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562 cmdTagWritten = 1; |
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563 dataToBeWritten = (char *)dataBuf; |
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564 bytesToBeWritten = dataLen; |
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|
565 } |
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|
566 } |
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|
567 |
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|
568 /* |
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|
569 ** We have built a complete L2 Frame ... that it may or may not include the complete packet it isn't important |
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570 ** but we need to send it ... |
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|
571 */ |
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572 drvRetVal = curr_l2p_cntrl_block->callbacks.Send_Frame_Cb(batId); |
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|
573 frameCntrlBytes.frame_id ++; |
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|
574 |
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575 if (drvRetVal != 0) |
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|
576 { |
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|
577 /* |
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|
578 ** There was an error sending the frame |
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|
579 */ |
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580 *errVal = drvRetVal; |
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|
581 return L2P_STAT_UNKNOWN_ERROR; |
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|
582 } |
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|
583 } |
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|
584 |
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|
585 return L2P_STAT_SUCCESS; |
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|
586 } |
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|
587 |
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|
588 /* |
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|
589 +--------------------------------------------------------------------+ |
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|
590 | PROJECT: BAT L2P MODULE: L2P | |
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|
591 | STATE : code ROUTINE: L2P_Receive | |
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|
592 +--------------------------------------------------------------------+ |
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|
593 |
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|
594 PURPOSE : L2P_Receive is called on receipt of data by the BAT, BAT Command Tag is extracted and the rest |
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parents:
diff
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|
595 of the L2 frames are combined into a buffer and passed, complete, to the BAT. The following is a |
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parents:
diff
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|
596 list of the parameters, and their uses: |
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|
597 |
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diff
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|
598 batId : A identifer to uniquely identify each instance of BAT using this L2P |
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|
599 inBuf : pointer to the received buffer |
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diff
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|
600 dataLen : length of the data in the 'inBuf' |
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|
601 |
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|
602 */ |
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|
603 T_L2P_STATUS L2P_Receive(U8 batId, void *dataBuf, void *seg_hdr_ptr, U16 totalsize, U16 segSize) |
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|
604 { |
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diff
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|
605 T_L2P_CONTROL_BLOCK *curr_l2p_cntrl_block; |
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|
606 T_L2P_FRAME_CONTROL_BYTES frameCntrlBytes; |
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parents:
diff
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|
607 U16 frameCntrlBytesToBeRead; |
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|
608 U16 bytesRead; |
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|
609 U16 remainingSegSize; |
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diff
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|
610 U16 totalSegSize; |
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|
611 char *curRxSeg; |
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|
612 char *rxReadPtr; |
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|
613 char *frameCntrlDataToBeRead; |
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|
614 |
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|
615 TRACE_EVENT("L2P_Receive()"); |
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|
616 |
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|
617 /* |
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|
618 ** Check that the Bat Id is valid |
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diff
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|
619 */ |
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|
620 curr_l2p_cntrl_block = l2p_control_block_list; |
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|
621 |
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|
622 while ((curr_l2p_cntrl_block != (T_L2P_CONTROL_BLOCK *)0) && |
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diff
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|
623 (curr_l2p_cntrl_block->batId != batId)) |
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|
624 { |
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|
625 curr_l2p_cntrl_block = curr_l2p_cntrl_block->next; |
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|
626 } |
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|
627 |
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|
628 if (curr_l2p_cntrl_block == (T_L2P_CONTROL_BLOCK *)0) |
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|
629 { |
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|
630 return L2P_STAT_NO_SUCH_BAT_ID; |
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|
631 } |
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parents:
diff
changeset
|
632 |
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diff
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|
633 /* |
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|
634 ** Check the rest of the parameters |
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parents:
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|
635 */ |
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parents:
diff
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|
636 if (dataBuf == (void *)0) |
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parents:
diff
changeset
|
637 { |
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diff
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|
638 TRACE_EVENT("L2P_Receive() - Invalid Data Buffer Pointer"); |
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parents:
diff
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|
639 return L2P_STAT_INVALID_PARAMETER; |
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|
640 } |
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|
641 |
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parents:
diff
changeset
|
642 /* |
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parents:
diff
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|
643 ** Don't check the Segment Header Pointer, it is User Data and down to the |
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parents:
diff
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|
644 ** BAT Lib or BAT Module which pointer they pass : |
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parents:
diff
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|
645 ** pointer to current segment - never NULL |
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parents:
diff
changeset
|
646 ** pointer to the next segment - may be NULL |
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parents:
diff
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|
647 ** |
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parents:
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|
648 if (seg_hdr_ptr == (void *)0) |
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parents:
diff
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|
649 { |
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parents:
diff
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|
650 TRACE_EVENT("L2P_Receive() - Invalid Segment Header Pointer"); |
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diff
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|
651 return L2P_STAT_INVALID_PARAMETER; |
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parents:
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|
652 } |
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parents:
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|
653 */ |
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parents:
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|
654 |
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diff
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|
655 if (totalsize <= (U16)L2P_FRAME_CONTROL_SIZE) |
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parents:
diff
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|
656 { |
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diff
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|
657 TRACE_EVENT("L2P_Receive() - Invalid Buffer Length"); |
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|
658 return L2P_STAT_INVALID_PARAMETER; |
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|
659 } |
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|
660 |
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|
661 if (segSize == (U16)0) |
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parents:
diff
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|
662 { |
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parents:
diff
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|
663 TRACE_EVENT("L2P_Receive() - Invalid Segment Size"); |
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|
664 return L2P_STAT_INVALID_PARAMETER; |
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parents:
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|
665 } |
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|
666 |
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|
667 /* |
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parents:
diff
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|
668 ** The format of an L2 frame for BAT will be as follows : |
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parents:
diff
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|
669 ** |
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parents:
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|
670 ** For the first frame |
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parents:
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|
671 ** ---------------------------------------------------------------- |
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|
672 ** | L2 Control Bytes | BAT Cmd TAG | BAT Command Data | |
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parents:
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|
673 ** | (n Bytes) | 4 Bytes | (Remaining Bytes) | |
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parents:
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|
674 ** ---------------------------------------------------------------- |
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parents:
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|
675 ** |
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|
676 ** For any subsequent frames |
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parents:
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|
677 ** ---------------------------------------------------------------- |
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|
678 ** | L2 Control Bytes | BAT Command Data | |
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|
679 ** | (n Bytes) | (Remaining Bytes) | |
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|
680 ** ---------------------------------------------------------------- |
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parents:
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|
681 */ |
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|
682 |
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diff
changeset
|
683 /* |
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|
684 ** Read the L2 Frames Control Bytes |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
685 */ |
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parents:
diff
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|
686 curRxSeg = (char *)dataBuf; |
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parents:
diff
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|
687 frameCntrlBytesToBeRead = L2P_FRAME_CONTROL_SIZE; |
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parents:
diff
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|
688 frameCntrlDataToBeRead = (char *)&frameCntrlBytes; |
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parents:
diff
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|
689 totalSegSize = remainingSegSize = segSize; |
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parents:
diff
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|
690 rxReadPtr = dataBuf; |
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parents:
diff
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|
691 |
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parents:
diff
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|
692 while (frameCntrlBytesToBeRead > 0) |
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parents:
diff
changeset
|
693 { |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff
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|
694 rxReadPtr = L2P_read_data_from_seg(rxReadPtr, frameCntrlDataToBeRead, frameCntrlBytesToBeRead, |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
695 remainingSegSize, &bytesRead); |
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parents:
diff
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|
696 frameCntrlBytesToBeRead-= bytesRead; |
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parents:
diff
changeset
|
697 remainingSegSize -= bytesRead; |
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parents:
diff
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|
698 frameCntrlDataToBeRead += bytesRead; |
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parents:
diff
changeset
|
699 |
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parents:
diff
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|
700 if (rxReadPtr == (char *)0) |
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parents:
diff
changeset
|
701 { |
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parents:
diff
changeset
|
702 /* |
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parents:
diff
changeset
|
703 ** We have reached the end of the current Segment, so get the next. |
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parents:
diff
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|
704 */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
705 curRxSeg = curr_l2p_cntrl_block->callbacks.Get_Next_Seg_Cb(batId, seg_hdr_ptr, &seg_hdr_ptr, |
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parents:
diff
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|
706 &segSize); |
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parents:
diff
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|
707 rxReadPtr = curRxSeg; |
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diff
changeset
|
708 totalSegSize +=segSize; |
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parents:
diff
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|
709 remainingSegSize = segSize; |
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parents:
diff
changeset
|
710 } |
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parents:
diff
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|
711 } |
eedbf248bac0
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diff
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|
712 |
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parents:
diff
changeset
|
713 /* |
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parents:
diff
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|
714 ** Now we have the frame Control Bytes ... so we need to determine whether we need a |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
715 ** new Rx Buffer from the user |
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parents:
diff
changeset
|
716 */ |
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|
717 |
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parents:
diff
changeset
|
718 /* |
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diff
changeset
|
719 ** If the frame Id is zero, this is a new message |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
720 */ |
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parents:
diff
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|
721 if ((frameCntrlBytes.frame_id == (U8)0) && |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
722 ((frameCntrlBytes.frame_type == L2P_FT_START_FRAME) || |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
723 (frameCntrlBytes.frame_type == L2P_FT_COMPLETE_FRAME))) |
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parents:
diff
changeset
|
724 { |
eedbf248bac0
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parents:
diff
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|
725 /* |
eedbf248bac0
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diff
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|
726 ** Do we already have an Rx Buffer |
eedbf248bac0
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parents:
diff
changeset
|
727 */ |
eedbf248bac0
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parents:
diff
changeset
|
728 if (curr_l2p_cntrl_block->rxBuf == (char *)0) |
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parents:
diff
changeset
|
729 { |
eedbf248bac0
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parents:
diff
changeset
|
730 /* |
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diff
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|
731 ** No -- Use the callback function to get an Rx Buffer |
eedbf248bac0
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parents:
diff
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|
732 */ |
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parents:
diff
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|
733 curr_l2p_cntrl_block->rxBuf = (char *)curr_l2p_cntrl_block->callbacks.Get_RxBuf_Cb(batId); |
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parents:
diff
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|
734 |
eedbf248bac0
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diff
changeset
|
735 if (curr_l2p_cntrl_block->rxBuf == (char *)0) |
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parents:
diff
changeset
|
736 { |
eedbf248bac0
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parents:
diff
changeset
|
737 /* |
eedbf248bac0
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diff
changeset
|
738 ** Failed to allocate a Rx Buffer |
eedbf248bac0
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parents:
diff
changeset
|
739 */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
740 return L2P_STAT_UNABLE_TO_GET_BUFFER; |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
741 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
742 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
743 /* comment out the 'else block' because there is no functionality to go inside it |
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gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
744 else |
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gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
745 { |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
746 ** Yes -- We will overwrite it automatically ... the previous message was lost! |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
747 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
748 */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
749 |
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gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
750 /* |
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gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
751 ** Pull the necessary data from the Frame Control Bytes |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
752 */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
753 curr_l2p_cntrl_block->dataSize = frameCntrlBytes.dataLen; /* length of the Command Data (excl the CmdTag) */ |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
754 curr_l2p_cntrl_block->muxId = frameCntrlBytes.mux_id; /* Sender or receipient of the message */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
755 curr_l2p_cntrl_block->cmdTagReceived = 0; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
756 } |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
757 |
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gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
758 /* |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
759 ** if necessary, read the cmd Tag from the Buffer |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
760 */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
761 if ((frameCntrlBytes.frame_type == L2P_FT_COMPLETE_FRAME) || |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
762 (frameCntrlBytes.frame_type == L2P_FT_START_FRAME)) |
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gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
763 { |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
764 curr_l2p_cntrl_block->bytesToBeRead = sizeof(curr_l2p_cntrl_block->receivedCmdTag); |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
765 curr_l2p_cntrl_block->dataToBeRead = (char *)&curr_l2p_cntrl_block->receivedCmdTag; |
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gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
766 |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
767 while ((rxReadPtr != (char *)0) && /* There is still data in the buffer segement */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
768 (!curr_l2p_cntrl_block->cmdTagReceived)) /* The command Tag has not completed */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
769 { |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
770 rxReadPtr = L2P_read_data_from_seg(rxReadPtr, curr_l2p_cntrl_block->dataToBeRead, |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
771 curr_l2p_cntrl_block->bytesToBeRead, |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
772 remainingSegSize, &bytesRead); |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
773 curr_l2p_cntrl_block->bytesToBeRead -= bytesRead; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
774 remainingSegSize -= bytesRead; |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
775 curr_l2p_cntrl_block->dataToBeRead += bytesRead; |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
776 |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
777 if ((rxReadPtr == (char *)0) && (totalSegSize < totalsize) && (curr_l2p_cntrl_block->bytesToBeRead != (U16)0)) |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
778 { |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
779 /* |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
780 ** We have reached the end of the current Segment, so get the next. |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
781 */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
782 curRxSeg = curr_l2p_cntrl_block->callbacks.Get_Next_Seg_Cb(batId, seg_hdr_ptr, &seg_hdr_ptr, &segSize); |
eedbf248bac0
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
783 rxReadPtr = curRxSeg; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
784 totalSegSize +=segSize; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
785 remainingSegSize = segSize; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
786 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
787 |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
788 /* |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
789 ** If the Command Tag has been completed set a flag |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
790 */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
791 if (curr_l2p_cntrl_block->bytesToBeRead == (U16)0) |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
792 { |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
793 curr_l2p_cntrl_block->cmdTagReceived = 1; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
794 curr_l2p_cntrl_block->dataToBeRead = (char *)curr_l2p_cntrl_block->rxBuf; /* Next Write the AT Command Data */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
795 curr_l2p_cntrl_block->bytesToBeRead = curr_l2p_cntrl_block->dataSize; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
796 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
797 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
798 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
799 |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
800 /* |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
801 ** if txWritePtr is NULL at this point it is because a buffer has been completed ... drop out and |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
802 ** wait for the next buffer which will contain the next frame. |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
803 */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
804 while ((curr_l2p_cntrl_block->bytesToBeRead > 0) && /* There is still data to read */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
805 (rxReadPtr != (char *)0)) /* There is still data in the buffer segement */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
806 { |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
807 rxReadPtr = L2P_read_data_from_seg(rxReadPtr, curr_l2p_cntrl_block->dataToBeRead, |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
808 curr_l2p_cntrl_block->bytesToBeRead, |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
809 remainingSegSize, &bytesRead); |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
810 curr_l2p_cntrl_block->bytesToBeRead -= bytesRead; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
811 remainingSegSize -= bytesRead; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
812 curr_l2p_cntrl_block->dataToBeRead += bytesRead; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
813 |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
814 if ((rxReadPtr == (char *)0) && (totalSegSize < totalsize) && (curr_l2p_cntrl_block->bytesToBeRead != (U16)0)) |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
815 |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
816 { |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
817 /* |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
818 ** We have reached the end of the current Segment, so get the next. |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
819 */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
820 curRxSeg = curr_l2p_cntrl_block->callbacks.Get_Next_Seg_Cb(batId, seg_hdr_ptr, &seg_hdr_ptr, &segSize); |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
821 rxReadPtr = curRxSeg; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
822 totalSegSize +=segSize; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
823 remainingSegSize = segSize; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
824 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
825 |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
826 if ((curr_l2p_cntrl_block->bytesToBeRead == (U16)0) && /* We've finished writing the data */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
827 (!curr_l2p_cntrl_block->cmdTagReceived)) /* but that data was the Command Tag */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
828 { |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
829 /* |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
830 ** now we have to write the AT Command Data |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
831 */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
832 curr_l2p_cntrl_block->cmdTagReceived = 1; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
833 curr_l2p_cntrl_block->dataToBeRead = (char *)curr_l2p_cntrl_block->rxBuf; /* Next Write the AT Command Data */ |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
834 curr_l2p_cntrl_block->bytesToBeRead = curr_l2p_cntrl_block->dataSize; |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
835 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
836 } |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
837 |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
838 if (curr_l2p_cntrl_block->bytesToBeRead == (U16)0) |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
839 { |
eedbf248bac0
gsm-fw/g23m-aci subtree: initial import from LoCosto source
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
840 /* |
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|
841 ** We have built a complete message ... send it to the user .. |
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|
842 */ |
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843 curr_l2p_cntrl_block->callbacks.Msg_Rxd_Cb(batId, curr_l2p_cntrl_block->muxId, |
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diff
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|
844 curr_l2p_cntrl_block->receivedCmdTag, |
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845 curr_l2p_cntrl_block->rxBuf, |
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|
846 curr_l2p_cntrl_block->dataSize); |
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847 |
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|
848 /* |
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849 ** reset the Rx values |
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850 */ |
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diff
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|
851 curr_l2p_cntrl_block->rxBuf = (char *)0; |
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|
852 curr_l2p_cntrl_block->muxId = 0; |
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parents:
diff
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|
853 curr_l2p_cntrl_block->cmdTagReceived = 0; |
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parents:
diff
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|
854 curr_l2p_cntrl_block->receivedCmdTag = 0; |
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parents:
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|
855 curr_l2p_cntrl_block->dataSize = 0; |
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parents:
diff
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|
856 curr_l2p_cntrl_block->dataToBeRead = (char *)0; |
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|
857 } |
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|
858 |
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859 return L2P_STAT_SUCCESS; |
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|
860 } |
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|
861 |
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|
862 |
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|
863 /* |
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864 +--------------------------------------------------------------------+ |
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|
865 | PROJECT: BAT L2P MODULE: L2P | |
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|
866 | STATE : code ROUTINE: L2P_write_data_to_seg | |
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867 +--------------------------------------------------------------------+ |
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|
868 |
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|
869 PURPOSE : L2P_write_data_to_seg is a local function to write a piece of data into a buffer segment. The buffer |
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parents:
diff
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|
870 segment may, or may not be big enough to hold the entire piece of data. If the segment is full when |
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parents:
diff
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|
871 the data has been written then the function will return a NULL pointer, otherwise it will return a pointer |
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diff
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|
872 to the next location to receive data. |
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|
873 The following is a list of the parameters, and their uses: |
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|
874 |
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|
875 writePtr : pointer to the start location to write the data to |
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parents:
diff
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|
876 dataPtr : pointer to the data to be written |
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diff
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|
877 dataSize : length of the data in dataPtr |
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changeset
|
878 remain_seg_size : The size of remaining space in the buffer segment |
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diff
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|
879 bytesWritten : output parameter in order to return the actual number of bytes written into the segment. |
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|
880 |
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|
881 */ |
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diff
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|
882 static char *L2P_write_data_to_seg(char *writePtr, char *dataPtr, U16 dataSize, U16 remain_seg_size, |
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diff
changeset
|
883 U16 *bytesWritten) |
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|
884 { |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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|
885 char *retPtr; |
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parents:
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|
886 |
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|
887 if (remain_seg_size <= dataSize) |
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|
888 { |
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|
889 retPtr = (char *)0; |
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|
890 *bytesWritten = remain_seg_size; |
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|
891 } |
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|
892 else |
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|
893 { |
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diff
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|
894 retPtr = writePtr + dataSize; |
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|
895 *bytesWritten = dataSize; |
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|
896 } |
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|
897 |
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|
898 memcpy(writePtr, dataPtr, *bytesWritten); |
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parents:
diff
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|
899 |
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diff
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|
900 return retPtr; |
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|
901 } |
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|
902 |
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|
903 |
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diff
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|
904 /* |
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diff
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|
905 +--------------------------------------------------------------------+ |
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parents:
diff
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|
906 | PROJECT: BAT L2P MODULE: L2P | |
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parents:
diff
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|
907 | STATE : code ROUTINE: L2P_write_data_to_seg | |
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parents:
diff
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|
908 +--------------------------------------------------------------------+ |
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diff
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|
909 |
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parents:
diff
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|
910 PURPOSE : L2P_read_data_from_seg is a local function to read a piece of data from a buffer segment, and write |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
911 it into a data structure (pointed to by writePtr). The buffer segment may, or may not be big enough to |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
912 hold the entire piece of data. If the end of the segment is reached when the data has been read then |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
913 the function will return a NULL pointer, otherwise it will return a pointer to the next location to read data |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
914 from. The following is a list of the parameters, and their uses: |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
915 |
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parents:
diff
changeset
|
916 readPtr : pointer to the position in the segment to read from |
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parents:
diff
changeset
|
917 writePtr : pointer to the start location to write the data to |
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parents:
diff
changeset
|
918 dataSize : length of the data to be read from the segment |
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parents:
diff
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|
919 remain_seg_size : The size of remaining space in the buffer segment |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
920 bytesWritten : output parameter in order to return the actual number of bytes written. |
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parents:
diff
changeset
|
921 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
922 */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
923 static char *L2P_read_data_from_seg(char *readPtr, char *writePtr, U16 dataSize, U16 remain_seg_size, |
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parents:
diff
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|
924 U16 *bytesWritten) |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
925 { |
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parents:
diff
changeset
|
926 char *retPtr; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
927 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
928 if (remain_seg_size <= dataSize) |
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parents:
diff
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|
929 { |
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parents:
diff
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|
930 retPtr = (char *)0; |
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parents:
diff
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|
931 *bytesWritten = remain_seg_size; |
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|
932 } |
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parents:
diff
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|
933 else |
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parents:
diff
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|
934 { |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
935 retPtr = readPtr + dataSize; |
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parents:
diff
changeset
|
936 *bytesWritten = dataSize; |
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parents:
diff
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|
937 } |
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parents:
diff
changeset
|
938 |
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parents:
diff
changeset
|
939 memcpy(writePtr, readPtr, *bytesWritten); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
940 |
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parents:
diff
changeset
|
941 return retPtr; |
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parents:
diff
changeset
|
942 } |
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parents:
diff
changeset
|
943 |