FreeCalypso > hg > fc-magnetite
annotate src/g23m-aci/gdd_dio/gdd_sys.h @ 680:ee3ac8c617cb
armio.c: set GPIO2 output high initially
On TI-canonical platforms GPIO2 is DCD modem control output. In TI's
original code the AI_InitIOConfig() function called from Init_Target()
would configure GPIO2 as an output and set the initial output value to
low, but then the init code in uartfax.c called from Init_Serial_Flows()
would immediately change it to high, corresponding to DCD not asserted.
The result is a momentary asserted-state glitch on the DCD output.
The present change eliminates this glitch, setting DCD output to
not-asserted initially like it should be.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 25 Jun 2020 03:17:43 +0000 |
parents | 53929b40109c |
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rev | line source |
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1 /* |
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2 +----------------------------------------------------------------------------- |
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3 | Project : GSM-F&D (8411) |
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4 | Modul : gdd_sys.h |
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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 : API for limited system functionality offered to application |
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18 | domain libraries. |
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19 +----------------------------------------------------------------------------- |
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20 */ |
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21 |
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22 #ifndef GDD_SYS_H |
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23 #define GDD_SYS_H |
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24 |
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25 /*==== DEFINITIONS ==========================================================*/ |
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26 |
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27 typedef int T_GDD_SEM; |
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28 |
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29 |
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30 /*==== DYNAMIC MEMORY FUNCTIONS =============================================*/ |
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31 |
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32 |
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33 /* |
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34 +------------------------------------------------------------------------------ |
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35 | Function : gdd_sys_mem_malloc |
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36 +------------------------------------------------------------------------------ |
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37 | Description : Allocate memory. |
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38 | |
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39 | Parameters : size - Size of memory required. |
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40 | |
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41 | Return : Pointer to first byte of allocated memory. |
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42 | 0 if allocation failed. |
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43 +------------------------------------------------------------------------------ |
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44 */ |
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45 void * gdd_sys_mem_malloc(int size); |
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46 |
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47 |
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48 /* |
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49 +------------------------------------------------------------------------------ |
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50 | Function : gdd_sys_mem_free |
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51 +------------------------------------------------------------------------------ |
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52 | Description : Release memory which was previously allocated. |
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53 | |
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54 | Parameters : p - Pointer to memory to be deallocated |
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55 +------------------------------------------------------------------------------ |
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56 */ |
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57 void gdd_sys_mem_free(void * p); |
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58 |
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59 |
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60 /*==== SEMAPHORE FUNCTIONS ==================================================*/ |
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61 |
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62 |
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63 /* |
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64 +------------------------------------------------------------------------------ |
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65 | Function : gdd_sys_sem_open |
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66 +------------------------------------------------------------------------------ |
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67 | Description : Opens a (counting) semaphore specified by its name. If the |
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68 | semaphore does not exist, it will be created with the initial |
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69 | count given. If the semaphore already exists the parameter count |
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70 | will be ignored. |
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71 | |
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72 | Parameters : name - Some name to identify the semaphore |
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73 | count - initial count (e.g. 1 for a binary sem.) |
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74 | |
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75 | Return : Returns handle to created semaphore, or -1 if an error occured. |
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76 +------------------------------------------------------------------------------ |
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77 */ |
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78 T_GDD_SEM gdd_sys_sem_open(char * name, unsigned short count); |
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79 |
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80 |
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81 /* |
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82 +------------------------------------------------------------------------------ |
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83 | Function : gdd_sys_sem_close |
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84 +------------------------------------------------------------------------------ |
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85 | Description : Closes a semaphore |
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86 | |
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87 | Parameters : sem - handle of semaphore |
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88 | |
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89 | Return : 0 = succees |
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90 | 1 = error |
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91 +------------------------------------------------------------------------------ |
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92 */ |
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93 int gdd_sys_sem_close(T_GDD_SEM sem); |
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94 |
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95 |
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96 /* |
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97 +------------------------------------------------------------------------------ |
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98 | Function : gdd_sys_sem_down |
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99 +------------------------------------------------------------------------------ |
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100 | Description : This functions obtains the specified semaphore, i.e. |
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101 | the counter is decremented, if it is greater than zero. |
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102 | If the counter is equal to zero, than the calling task is |
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103 | suspended until the counter is incremented by another task. |
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104 | If the caller is a non-task thread the function returns |
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105 | immediately regardless if the request can be satisfied or not. |
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106 | In this case, -1 is returned if the counter was already zero. |
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107 | |
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108 | Parameters : sem - handle of semaphore |
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109 | |
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110 | Return : 0 = succees |
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111 | 1 = error |
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112 +------------------------------------------------------------------------------ |
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113 */ |
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114 int gdd_sys_sem_down(T_GDD_SEM sem); |
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115 |
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116 |
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117 /* |
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118 +------------------------------------------------------------------------------ |
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119 | Function : gdd_sys_sem_down |
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120 +------------------------------------------------------------------------------ |
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121 | Description : Releases a semaphore, i.e. counter is incremented. |
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122 | |
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123 | Parameters : sem - handle of semaphore |
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124 | |
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125 | Return : 0 = succees |
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126 | 1 = error |
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127 +------------------------------------------------------------------------------ |
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128 */ |
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129 int gdd_sys_sem_up(T_GDD_SEM sem); |
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130 |
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131 |
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132 /* |
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133 +------------------------------------------------------------------------------ |
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134 | Function : gdd_sys_sem_status |
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135 +------------------------------------------------------------------------------ |
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136 | Description : Query (obtain) the counter of a semaphore. |
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137 | |
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138 | Parameters : sem - handle of semaphore |
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139 | count - output variable to pass back the counter |
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140 | |
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141 | Return : 0 = succees |
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142 | 1 = error |
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143 +------------------------------------------------------------------------------ |
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144 */ |
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145 int gdd_sys_sem_status(T_GDD_SEM sem, /*out*/ unsigned short * count); |
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146 |
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147 |
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148 #endif /* GDD_SYS_H */ |