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annotate gsm-fw/nucleus/tmd.c @ 868:d92b110e06e0

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doc/Firmware_Architecture written
author Space Falcon <falcon@ivan.Harhan.ORG>
date Sun, 17 May 2015 03:45:19 +0000
parents afceeeb2cba1
children
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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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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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145 ignored. */
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146
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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147 INT TMD_Timer_State;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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148
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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149
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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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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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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152 is started. */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff changeset
153
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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154 UNSIGNED TMD_Time_Slice;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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155
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff changeset
156
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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157 /* TMD_Time_Slice_Task is a pointer to the task to time-slice. This pointer
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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158 is built in the portion of the timer interrupt that determines if a time-
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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159 slice timer has expired. */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
160
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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161 TC_TCB *TMD_Time_Slice_Task;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
162
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
163
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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164 /* TMD_Time_Slice_State indicates the state of the time slice variable. If
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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165 the state is active, the time slice counter is decremented. If the
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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166 state is expired, the timer HISR is initiated to process the expiration.
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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167 If the state indicates that the time slice is not-active, the time slice
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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168 counter is ignored. */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff changeset
169
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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170 INT TMD_Time_Slice_State;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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171
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff changeset
172
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173 /* TMD_HISR is the timer HISR's control block. */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
174
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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175 TC_HCB TMD_HISR;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
176
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
177
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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178 /* TMD_HISR_Stack_Ptr points to the memory area reserved for the timer HISR.
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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179 Note that this is setup in INT_Initialize. */
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diff changeset
180
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181 VOID *TMD_HISR_Stack_Ptr;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
182
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
183
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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184 /* TMD_HISR_Stack_Size represents the size of the allocated timer HISR stack.
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
185 Note that this is setup in INT_Initialize. */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
186
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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187 UNSIGNED TMD_HISR_Stack_Size;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
188
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
189
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
190 /* TMD_HISR_Priority indicates the priority of the timer HISR. Priorities
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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191 range from 0 to 2, where priority 0 is the highest. Note that this is
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
192 also initialized in INT_Initialize. */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
193
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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194 INT TMD_HISR_Priority;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
195
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
196
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
197
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
198
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
199
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
200