FreeCalypso > hg > freecalypso-sw
annotate gsm-fw/gpf/osl/os_tim_fl.c @ 661:c36fe9d1da7e
gsm-fw/ccd/README: added paragraph explaining how ccddata depends on cdginc
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Fri, 26 Sep 2014 00:49:59 +0000 |
parents | 9d80090a9e0c |
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1 /* |
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2 * This C module is a reconstruction based on the disassembly of |
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3 * os_tim.obj in frame_na7_db_fl.lib from the Leonardo package, |
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4 * subsequently reworked by Space Falcon. |
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5 */ |
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6 |
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7 /* set of included headers from COFF symtab: */ |
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8 #include <stdio.h> |
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9 #include "gpfconf.h" /* FreeCalypso addition */ |
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10 #include "../../nucleus/nucleus.h" |
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11 #include "typedefs.h" |
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12 #include "os.h" |
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13 #include "gdi.h" |
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14 #include "os_types.h" |
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15 #include "os_glob.h" |
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16 |
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17 extern UNSIGNED TMD_Timer; |
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18 extern INT TMD_Timer_State; |
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19 |
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20 extern T_OS_TIMER_ENTRY TimerTable[]; |
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21 extern T_OS_TIMER_TABLE_ENTRY *p_list[]; |
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22 |
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23 extern void os_Timeout(UNSIGNED t_handle); |
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24 extern void timer_error(int err); |
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25 |
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26 unsigned os_time_to_tick_multiplier = TIME_TO_TICK_TDMA_FRAME_MULTIPLIER; |
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27 unsigned os_tick_to_time_multiplier = TICK_TO_TIME_TDMA_FRAME_MULTIPLIER; |
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28 |
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29 unsigned volatile t_start_ticks; |
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30 T_OS_TIMER_TABLE_ENTRY *t_running; |
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31 int used_timers; |
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32 int next_t_handle; |
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33 int volatile t_list_access; |
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34 int max_used_timers; |
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35 NU_SEMAPHORE TimSemCB; |
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36 NU_TIMER os_timer_cb; |
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37 |
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38 #define BARRIER asm volatile ("": : :"memory") |
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39 |
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40 GLOBAL LONG |
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41 os_set_tick(int os_system_tick) |
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42 { |
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43 switch (os_system_tick) { |
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44 case SYSTEM_TICK_TDMA_FRAME: |
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45 os_time_to_tick_multiplier = TIME_TO_TICK_TDMA_FRAME_MULTIPLIER; |
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46 os_tick_to_time_multiplier = TICK_TO_TIME_TDMA_FRAME_MULTIPLIER; |
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47 return(OS_OK); |
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48 case SYSTEM_TICK_10_MS: |
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49 os_time_to_tick_multiplier = TIME_TO_TICK_10MS_MULTIPLIER; |
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50 os_tick_to_time_multiplier = TICK_TO_TIME_10MS_MULTIPLIER; |
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51 return(OS_OK); |
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52 default: |
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53 return(OS_ERROR); |
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54 } |
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55 } |
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56 |
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57 GLOBAL LONG |
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58 os_TimerInformation(USHORT Index, char *Buffer) |
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59 { |
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60 static int t_info_read; |
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61 |
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62 if (t_info_read) { |
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63 t_info_read = 0; |
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64 return(OS_ERROR); |
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65 } |
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66 sprintf(Buffer, "Maximum %d of %d available timers running", |
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67 max_used_timers, MaxSimultaneousTimer); |
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68 t_info_read = 1; |
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69 return(OS_OK); |
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70 } |
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71 |
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72 GLOBAL LONG |
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73 os_TimInit(void) |
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74 { |
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75 int i; |
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76 |
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77 if (NU_Create_Semaphore(&TimSemCB, "TIMSEM", 1, NU_PRIORITY) |
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78 != NU_SUCCESS) |
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79 return(OS_ERROR); |
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80 if (NU_Create_Timer(&os_timer_cb, "OS_TIMER", os_Timeout, 0, 1, 0, |
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81 NU_DISABLE_TIMER) != NU_SUCCESS) |
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82 return(OS_ERROR); |
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83 used_timers = 0; |
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84 max_used_timers = 0; |
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85 next_t_handle = 1; |
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86 t_list_access = 0; |
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87 t_start_ticks = 0; |
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88 p_list[0] = 0; |
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89 for (i = 1; i < MaxSimultaneousTimer; i++) { |
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90 TimerTable[i].entry.status = TMR_FREE; |
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91 TimerTable[i].entry.next = 0; |
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92 TimerTable[i].entry.prev = 0; |
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93 TimerTable[i].next_t_handle = i + 1; |
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94 p_list[i] = 0; |
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95 } |
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96 TimerTable[MaxSimultaneousTimer].entry.status = TMR_FREE; |
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97 TimerTable[MaxSimultaneousTimer].next_t_handle = 0; |
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98 t_running = 0; |
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99 return(OS_OK); |
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100 } |
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101 |
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102 GLOBAL LONG |
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103 os_RecoverTick(OS_TICK ticks) |
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104 { |
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105 UNSIGNED current_system_clock; |
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106 |
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107 current_system_clock = NU_Retrieve_Clock(); |
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108 NU_Set_Clock(current_system_clock + ticks); |
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109 if (TMD_Timer_State == TM_ACTIVE) { |
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110 if (TMD_Timer <= ticks) { |
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111 TMD_Timer_State = TM_EXPIRED; |
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112 TMD_Timer = 0; |
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113 } else |
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114 TMD_Timer -= ticks; |
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115 } |
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116 return(OS_OK); |
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117 } |
459
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118 |
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119 GLOBAL LONG |
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120 os_QueryTimer(OS_HANDLE TaskHandle, OS_HANDLE TimerHandle, |
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121 OS_TIME *RemainingTime) |
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122 { |
482
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123 T_OS_TIMER_TABLE_ENTRY *timer, *t_iter; |
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124 OS_TICK c_ticks, r_ticks, e_ticks; |
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125 STATUS sts; |
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126 |
482
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127 if (TimerHandle > MaxSimultaneousTimer) |
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128 return(OS_ERROR); |
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129 sts = NU_Obtain_Semaphore(&TimSemCB, NU_SUSPEND); |
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130 timer = &TimerTable[TimerHandle].entry; |
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131 if (timer->status == TMR_FREE) { |
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132 if (sts == NU_SUCCESS) |
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133 NU_Release_Semaphore(&TimSemCB); |
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134 return(OS_ERROR); |
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135 } |
482
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136 t_list_access = 1; |
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137 BARRIER; |
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138 if (!t_running) { |
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139 r_ticks = 0; |
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140 goto out; |
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141 } |
459
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142 c_ticks = NU_Retrieve_Clock(); |
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143 e_ticks = c_ticks - t_start_ticks; |
482
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144 t_iter = t_running; |
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145 if (t_iter->r_ticks >= e_ticks) |
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146 r_ticks = t_iter->r_ticks - e_ticks; |
459
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147 else |
482
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148 r_ticks = 0; |
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149 while (t_iter != timer) { |
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150 t_iter = t_iter->next; |
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151 if (t_iter == t_running) { |
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152 r_ticks = 0; |
459
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153 goto out; |
482
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154 } |
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155 r_ticks += t_iter->r_ticks; |
459
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|
156 } |
482
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157 out: BARRIER; |
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158 t_list_access = 0; |
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159 if (sts == NU_SUCCESS) |
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|
160 NU_Release_Semaphore(&TimSemCB); |
459
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161 *RemainingTime = SYSTEM_TICKS_TO_TIME(r_ticks); |
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162 return(OS_OK); |
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163 } |
460
9cacd09e8ef3
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|
164 |
9cacd09e8ef3
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165 GLOBAL LONG |
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166 os_InactivityTicks(int *next_event, OS_TICK *next_event_ticks) |
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167 { |
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168 *next_event = 1; |
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169 switch (TMD_Timer_State) { |
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OSL: os_tim_fl.c done
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170 case TM_ACTIVE: |
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171 *next_event_ticks = TMD_Timer; |
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172 return(OS_OK); |
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173 case TM_NOT_ACTIVE: |
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|
174 *next_event_ticks = 0; |
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175 *next_event = 0; |
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176 return(OS_OK); |
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|
177 default: |
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OSL: os_tim_fl.c done
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178 *next_event_ticks = 0; |
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179 return(OS_OK); |
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|
180 } |
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OSL: os_tim_fl.c done
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|
181 } |