FreeCalypso > hg > fc-magnetite
annotate src/cs/services/atp/atp_uart.c @ 196:a04cde1fb771
src/g23m-gprs/sndcp/sndcp_pei.c: removed compilation-failing broken code,
see the comment added inside
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 14 Oct 2016 01:14:47 +0000 |
parents | 945cf7f506b2 |
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rev | line source |
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1 /********************************************************************************/ |
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2 /* */ |
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3 /* File Name: atp_uart.c */ |
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4 /* */ |
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5 /* Purpose: This file contains the internal functions related to */ |
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6 /* the ATP-UART interface and used to utilize a COM port */ |
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7 /* under WIN32. */ |
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8 /* */ |
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9 /* Note: None. */ |
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10 /* */ |
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11 /* Revision History: */ |
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12 /* 10/04/01 Pascal Pompei */ |
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13 /* - Create. */ |
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14 /* */ |
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15 /* (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved. */ |
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16 /* */ |
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17 /********************************************************************************/ |
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18 #include "atp/atp_uart_i.h" |
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19 |
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20 |
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21 /********************************************************************************/ |
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22 /* */ |
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23 /* Function Name: atp_uart_create_com_port */ |
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24 /* */ |
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25 /* Purpose: This function creates a COM port. */ |
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26 /* */ |
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27 /* Input Parameters: */ |
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28 /* com_port - Contains the COM port number. */ |
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29 /* baud_rate - Contains the baud rate (in bits per second). */ |
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30 /* */ |
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31 /* Output Parameters: None. */ |
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32 /* */ |
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33 /* Global Parameters: None. */ |
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34 /* */ |
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35 /* Note: None. */ |
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36 /* */ |
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37 /* Revision History: */ |
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38 /* 02/05/01 David Lamy-Charrier */ |
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39 /* - Create. */ |
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40 /* */ |
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41 /********************************************************************************/ |
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42 T_ATP_UART_ERROR_CODES atp_uart_create_com_port (T_ATP_UART_COM_PORT com_port, |
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43 T_ATP_UART_BAUD_RATE baud_rate) |
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44 { |
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45 /* Declare local variables. */ |
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46 DCB control_settings; |
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47 COMMTIMEOUTS timeouts = {MAXDWORD, \ |
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48 MAXDWORD, \ |
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49 0x0000000A, \ |
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50 0x00000000, \ |
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51 0x00000000}; |
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52 |
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53 /******************* atp_uart_create_com_port function begins *******************/ |
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54 |
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55 /* First, update the name associated with the COM port. */ |
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56 (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_name[3] = (char) ('0' + com_port); |
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57 |
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58 /* Then, create the COM port with the following parameters: */ |
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59 /* - Read/Write access, */ |
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60 /* - The COM port can not be shared and can not be opened again until the */ |
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61 /* handle is closed, */ |
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62 /* - The handle can not be inherited, */ |
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63 /* - The COM port is just opened (failed if does not exist), */ |
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64 /* - No specific file attributes, */ |
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65 /* - No template used. */ |
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66 (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle = CreateFile ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_name, |
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67 (GENERIC_READ | GENERIC_WRITE), |
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68 0x00000000, |
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69 NULL, |
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70 OPEN_EXISTING, |
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71 0x00000000, |
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72 NULL); |
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73 |
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74 /* If any error occurred, then abort. */ |
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75 if ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle == INVALID_HANDLE_VALUE) |
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76 { |
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77 return (RV_INVALID_PARAMETER); |
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78 } |
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79 |
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80 /* Otherwise, having created the COM port, get the default setting */ |
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81 /* information. However, if any error occurred, then remove the COM port */ |
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82 /* and abort. */ |
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83 control_settings.DCBlength = sizeof (DCB); |
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84 if (GetCommState ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle, \ |
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85 &control_settings) == FALSE) |
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86 { |
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87 (void) atp_uart_remove_com_port (); |
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88 return (RV_INVALID_PARAMETER); |
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89 } |
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90 |
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91 /* Define the baud rate, as well as the DCB structure settings. */ |
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92 control_settings.BaudRate = baud_rate; |
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93 control_settings.fOutxCtsFlow = TRUE; |
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94 control_settings.fOutxDsrFlow = FALSE; |
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95 control_settings.fDtrControl = DTR_CONTROL_ENABLE; |
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96 control_settings.fDsrSensitivity = FALSE; |
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97 control_settings.fRtsControl = RTS_CONTROL_HANDSHAKE; |
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98 |
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99 /* Then, configure the COM port according to the specifications of the DCB */ |
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100 /* structure, set the timeout parameters for all read and write operations */ |
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101 /* on the COM port and discard all characters from the output and input */ |
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102 /* buffers. However, if any error occurred, then remove the COM port and */ |
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103 /* abort. */ |
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104 if ((SetCommState ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle, \ |
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105 &control_settings) == FALSE) || \ |
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106 (SetCommTimeouts ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle, \ |
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107 &timeouts) == FALSE) || \ |
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108 (PurgeComm ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle, \ |
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109 (PURGE_RXCLEAR | PURGE_TXCLEAR | PURGE_RXABORT | PURGE_TXABORT)) == FALSE)) |
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110 { |
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111 (void) atp_uart_remove_com_port (); |
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112 return (RV_INTERNAL_ERR); |
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113 } |
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114 return (RV_OK); |
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115 |
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116 } /****************** End of atp_uart_create_com_port function ******************/ |
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117 |
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118 |
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119 /********************************************************************************/ |
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120 /* */ |
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121 /* Function Name: atp_uart_write_com_port */ |
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122 /* */ |
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123 /* Purpose: This function writes data on the COM port. */ |
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124 /* */ |
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125 /* Input Parameters: */ |
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126 /* data_buffer_p - Pointer on the data to be written. */ |
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127 /* data_size - Contains the total byte count to be written. */ |
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128 /* */ |
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129 /* Output Parameters: None. */ |
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130 /* */ |
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131 /* Global Parameters: None. */ |
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132 /* */ |
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133 /* Note: Buffer de-allocation is outside the scope of this */ |
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134 /* function. */ |
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135 /* */ |
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136 /* Revision History: */ |
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137 /* 02/05/01 David Lamy-Charrier */ |
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138 /* - Create. */ |
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139 /* */ |
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140 /********************************************************************************/ |
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141 T_ATP_UART_ERROR_CODES atp_uart_write_com_port (UINT8 *data_buffer_p, |
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142 UINT32 data_size) |
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143 { |
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144 /* Declare a local variable. */ |
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145 UINT32 data_size_sent = 0x00000000; |
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146 |
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147 /******************** atp_uart_write_com_port function begins *******************/ |
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148 |
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149 /* Attempt writing data. If any error occurred, then abort. */ |
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150 if (((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle == INVALID_HANDLE_VALUE) || \ |
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151 (WriteFile ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle, \ |
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152 data_buffer_p, \ |
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153 data_size, \ |
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154 (unsigned long *) (&data_size_sent), \ |
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155 NULL) == FALSE) || \ |
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156 (data_size_sent != data_size)) |
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157 { |
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158 return (RV_INVALID_PARAMETER); |
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159 } |
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160 return (RV_OK); |
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161 |
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162 } /******************* End of atp_uart_write_com_port function ******************/ |
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163 |
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164 |
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165 /********************************************************************************/ |
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166 /* */ |
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167 /* Function Name: atp_uart_read_com_port */ |
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168 /* */ |
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169 /* Purpose: This function reads data from the COM port. */ |
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170 /* */ |
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171 /* Input Parameters: */ |
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172 /* data_buffer_p - Pointer on the destination buffer. */ |
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173 /* data_size_p - Pointer on the total byte count to be read. */ |
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174 /* */ |
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175 /* Output Parameters: None. */ |
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176 /* data_size_p - Contains the total byte count read. */ |
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177 /* */ |
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178 /* Global Parameters: None. */ |
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179 /* */ |
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180 /* Notes: Buffer allocation is outside the scope of this */ |
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181 /* function Moreover, this function returns the total */ |
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182 /* byte count read, up to the expected value (from */ |
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183 /* 0x00000000 to 'data_size_p'). */ |
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184 /* */ |
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185 /* Revision History: */ |
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186 /* 02/05/01 David Lamy-Charrier */ |
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187 /* - Create. */ |
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188 /* */ |
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189 /********************************************************************************/ |
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190 T_ATP_UART_ERROR_CODES atp_uart_read_com_port (UINT8 *data_buffer_p, |
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191 UINT32 *data_size_p) |
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192 { |
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193 /* Declare a local variable. */ |
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194 UINT32 data_size_read = 0x00000000; |
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195 UINT32 total_data_size_read = 0x00000000; |
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196 |
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197 /******************** atp_uart_read_com_port function begins ********************/ |
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198 |
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199 /* First, check whether the COM port is in use and whether the total byte */ |
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200 /* count to be read is valid. Otherwise, abort. */ |
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201 if (((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle == INVALID_HANDLE_VALUE) || \ |
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202 (data_size_p == NULL)) |
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203 { |
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204 return (RV_INVALID_PARAMETER); |
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205 } |
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206 |
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207 /* Then, attempt reading data, up to the expected value. However, abort if */ |
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208 /* no data available from the COM port or if any error occurred. */ |
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209 do |
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210 { |
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211 if (ReadFile ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle, \ |
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212 (data_buffer_p + total_data_size_read), \ |
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213 (*data_size_p - total_data_size_read), \ |
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214 (unsigned long *) (&data_size_read), \ |
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215 NULL) == FALSE) |
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216 { |
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217 return (RV_INVALID_PARAMETER); |
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218 } |
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219 total_data_size_read += data_size_read; |
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220 } |
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221 while (data_size_read != 0x00000000); |
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222 |
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223 /* Update the total byte count read. */ |
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224 *data_size_p = total_data_size_read; |
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225 return(RV_OK); |
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226 |
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227 } /******************* End of atp_uart_read_com_port function *******************/ |
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228 |
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229 |
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230 /********************************************************************************/ |
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231 /* */ |
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232 /* Function Name: atp_uart_remove_com_port */ |
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233 /* */ |
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234 /* Purpose: This function removes the COM port. */ |
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235 /* */ |
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236 /* Input Parameters: None. */ |
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237 /* */ |
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238 /* Output Parameters: None. */ |
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239 /* */ |
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240 /* Global Parameters: None. */ |
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241 /* */ |
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242 /* Note: None. */ |
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243 /* */ |
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244 /* Revision History: */ |
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245 /* 02/05/01 David Lamy-Charrier */ |
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246 /* - Create. */ |
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247 /* */ |
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248 /********************************************************************************/ |
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249 T_ATP_UART_ERROR_CODES atp_uart_remove_com_port (void) |
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250 { |
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251 |
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252 /******************* atp_uart_remove_com_port function begins *******************/ |
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253 |
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254 /* Remove the COM port. If any error occurred, then abort. */ |
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255 if (((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle == INVALID_HANDLE_VALUE) || \ |
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256 (DeleteFile ((gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_name) == FALSE)) |
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257 { |
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258 return (RV_INVALID_PARAMETER); |
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259 } |
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260 |
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261 /* Set the default handle assigned to the COM port. */ |
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262 (gbl_atp_uart_ctrl_blk_p->conn_ctrl_blk).com_port_handle = INVALID_HANDLE_VALUE; |
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263 return (RV_OK); |
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264 |
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265 } /****************** End of atp_uart_remove_com_port function ******************/ |
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266 |