FreeCalypso > hg > freecalypso-sw
annotate gsm-fw/nucleus/tmd.c @ 915:7b805007dcfc
etmsync: slight "main" refactoring in preparation for multiple programs
author | Space Falcon <falcon@ivan.Harhan.ORG> |
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date | Tue, 08 Sep 2015 18:26:42 +0000 |
parents | afceeeb2cba1 |
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rev | line source |
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1 /*************************************************************************/ |
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2 /* */ |
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3 /* Copyright Mentor Graphics Corporation 2002 */ |
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4 /* All Rights Reserved. */ |
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5 /* */ |
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6 /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */ |
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7 /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */ |
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8 /* SUBJECT TO LICENSE TERMS. */ |
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9 /* */ |
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10 /*************************************************************************/ |
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11 |
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12 /*************************************************************************/ |
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13 /* */ |
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14 /* FILE NAME VERSION */ |
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15 /* */ |
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16 /* tmd.c Nucleus PLUS 1.14 */ |
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17 /* */ |
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18 /* COMPONENT */ |
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19 /* */ |
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20 /* TM - Timer Management */ |
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21 /* */ |
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22 /* DESCRIPTION */ |
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23 /* */ |
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24 /* This file contains global data structures for use within the */ |
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25 /* timer management component. */ |
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26 /* */ |
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27 /* DATA STRUCTURES */ |
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28 /* */ |
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29 /* TMD_Created_Timers_List Pointer to the linked-list */ |
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30 /* of created application */ |
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31 /* timers */ |
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32 /* TMD_Total_Timers Total number of created */ |
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33 /* application timers */ |
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34 /* TMD_Active_Timers_List Pointer to the linked-list */ |
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35 /* of active timers. */ |
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36 /* TMD_Active_List_Busy Flag indicating that the */ |
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37 /* active timer list is in use*/ |
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38 /* TMD_Created_List_Protect Created timer list protect */ |
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39 /* structure */ |
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40 /* TMD_System_Clock System clock */ |
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41 /* TMD_Timer_Start Starting value of timer */ |
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42 /* TMD_Timer Timer count-down value */ |
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43 /* TMD_Timer_State State of timer */ |
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44 /* TMD_Time_Slice Time slice count-down value */ |
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45 /* TMD_Time_Slice_Task Pointer to task to time-slice*/ |
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46 /* TMD_Time_Slice_State State of time slice */ |
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47 /* TMD_HISR Timer HISR control block */ |
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48 /* TMD_HISR_Stack_Ptr Pointer to HISR stack area */ |
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49 /* TMD_HISR_Stack_Size Size of HISR stack area */ |
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50 /* TMD_HISR_Priority Priority of timer HISR */ |
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51 /* */ |
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52 /* FUNCTIONS */ |
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53 /* */ |
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54 /* None */ |
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55 /* */ |
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56 /* DEPENDENCIES */ |
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57 /* */ |
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58 /* tm_defs.h Timer Management constants */ |
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59 /* tc_defs.h Thread Control constants */ |
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60 /* */ |
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61 /* HISTORY */ |
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62 /* */ |
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63 /* DATE REMARKS */ |
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64 /* */ |
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65 /* 03-01-1993 Created initial version 1.0 */ |
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66 /* 04-19-1993 Verified version 1.0 */ |
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67 /* 08-09-1993 Removed timer task structures, */ |
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68 /* making version 1.0a */ |
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69 /* 08-09-1993 Verified version 1.0a */ |
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70 /* 03-01-1994 Removed active list protect data */ |
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71 /* structure since system protect */ |
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72 /* is now used, resulting in */ |
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73 /* version 1.1 */ |
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74 /* */ |
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75 /* 03-18-1994 Verified version 1.1 */ |
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76 /* 04-17-1996 updated to version 1.2 */ |
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77 /* 03-24-1998 Released version 1.3. */ |
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78 /* 03-26-1999 Released 1.11m (new release */ |
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79 /* numbering scheme) */ |
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80 /* 04-17-2002 Released version 1.13m */ |
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81 /* 11-07-2002 Released version 1.14 */ |
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82 /*************************************************************************/ |
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83 #define NU_SOURCE_FILE |
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84 |
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85 #include "tm_defs.h" /* Timer constants */ |
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86 |
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87 |
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88 /* TMD_Created_Timers_List is the head pointer of the linked list of |
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89 created application timers. If the list is NU_NULL, there are no timers |
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90 currently created. */ |
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91 |
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92 CS_NODE *TMD_Created_Timers_List; |
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93 |
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94 |
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95 /* TMD_Total_Timers contains the total number of created application timers |
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96 in the system. */ |
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97 |
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98 UNSIGNED TMD_Total_Timers; |
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99 |
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100 |
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101 /* TMD_Active_Timers_List is the head pointer of the linked list of active |
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102 timers. This includes both the application timers and the system timers |
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103 used for task sleeping and timeouts. If the list is NU_NULL, there are |
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104 no timers currently active. */ |
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105 |
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106 TM_TCB *TMD_Active_Timers_List; |
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107 |
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108 |
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109 /* TMD_Active_List_Busy is a flag that indicates that the active timer list |
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110 is being processed. This is used to prevent multiple updates to the |
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111 active timer list. */ |
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112 |
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113 INT TMD_Active_List_Busy; |
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114 |
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115 |
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116 /* TMD_Created_List_Protect is used to protect the created application timers |
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117 list from multiple accesses. */ |
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118 |
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119 TC_PROTECT TMD_Created_List_Protect; |
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120 |
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121 |
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122 /* TMD_System_Clock is a continually incrementing clock. One is added to |
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123 the clock each timer interrupt. */ |
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124 |
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125 UNSIGNED TMD_System_Clock; |
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126 |
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127 |
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128 /* TMD_Timer_Start represents the starting value of the last set timer |
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129 request. */ |
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130 |
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131 UNSIGNED TMD_Timer_Start; |
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132 |
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133 |
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134 /* TMD_Timer is a count-down timer that is used to represent the smallest |
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135 active timer value in the system. Once this counter goes to zero, a |
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136 timer has expired. */ |
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137 |
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138 UNSIGNED TMD_Timer; |
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139 |
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140 |
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141 /* TMD_Timer_State indicates the state of the timer variable. If the state |
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142 is active, the timer counter is decremented. If the state is expired, |
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143 the timer HISR and timer task are initiated to process the expiration. If |
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144 the state indicates that the timer is not-active, the timer counter is |
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145 ignored. */ |
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146 |
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147 INT TMD_Timer_State; |
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148 |
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149 |
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150 /* TMD_Time_Slice contains the count-down value for the currently executing |
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151 task's time slice. When this value goes to zero, time slice processing |
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152 is started. */ |
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153 |
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154 UNSIGNED TMD_Time_Slice; |
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155 |
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156 |
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157 /* TMD_Time_Slice_Task is a pointer to the task to time-slice. This pointer |
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158 is built in the portion of the timer interrupt that determines if a time- |
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159 slice timer has expired. */ |
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160 |
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161 TC_TCB *TMD_Time_Slice_Task; |
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162 |
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163 |
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164 /* TMD_Time_Slice_State indicates the state of the time slice variable. If |
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165 the state is active, the time slice counter is decremented. If the |
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166 state is expired, the timer HISR is initiated to process the expiration. |
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167 If the state indicates that the time slice is not-active, the time slice |
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168 counter is ignored. */ |
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169 |
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170 INT TMD_Time_Slice_State; |
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171 |
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172 |
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173 /* TMD_HISR is the timer HISR's control block. */ |
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174 |
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175 TC_HCB TMD_HISR; |
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176 |
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177 |
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178 /* TMD_HISR_Stack_Ptr points to the memory area reserved for the timer HISR. |
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179 Note that this is setup in INT_Initialize. */ |
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180 |
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181 VOID *TMD_HISR_Stack_Ptr; |
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182 |
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183 |
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184 /* TMD_HISR_Stack_Size represents the size of the allocated timer HISR stack. |
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185 Note that this is setup in INT_Initialize. */ |
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186 |
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187 UNSIGNED TMD_HISR_Stack_Size; |
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188 |
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189 |
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190 /* TMD_HISR_Priority indicates the priority of the timer HISR. Priorities |
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191 range from 0 to 2, where priority 0 is the highest. Note that this is |
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192 also initialized in INT_Initialize. */ |
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193 |
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194 INT TMD_HISR_Priority; |
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195 |
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196 |
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197 |
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198 |
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199 |
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200 |