?? os_core.lst
字號(hào):
856 * msk is a mask that is used to clear the status byte of the TCB. For example,
857 * OSSemPost() will pass OS_STAT_SEM, OSMboxPost() will pass OS_STAT_MBOX etc.
858 *
859 * Returns : none
860 *
861 * Note : This function is INTERNAL to uC/OS-II and your application should not call it.
862 *********************************************************************************************************
863 */
864 #if OS_EVENT_EN > 0
865 INT8U OS_EventTaskRdy (OS_EVENT *pevent, void *msg, INT8U msk) reentrant //using 0
866 {
867 1 OS_TCB *ptcb;
868 1 INT8U x;
869 1 INT8U y;
870 1 INT8U bitx;
871 1 INT8U bity;
872 1 INT8U prio;
873 1
874 1
875 1 y = OSUnMapTbl[pevent->OSEventGrp]; /* Find HPT waiting for message */
C51 COMPILER V7.06 OS_CORE 07/18/2003 11:05:56 PAGE 16
876 1 bity = OSMapTbl[y];
877 1 x = OSUnMapTbl[pevent->OSEventTbl[y]];
878 1 bitx = OSMapTbl[x];
879 1 prio = (INT8U)((y << 3) + x); /* Find priority of task getting the msg */
880 1 pevent->OSEventTbl[y] &= ~bitx; /* Remove this task from the waiting list */
881 1 if (pevent->OSEventTbl[y] == 0x00) {
882 2 pevent->OSEventGrp &= ~bity; /* Clr group bit if this was only task pending */
883 2 }
884 1 ptcb = OSTCBPrioTbl[prio]; /* Point to this task's OS_TCB */
885 1 ptcb->OSTCBDly = 0; /* Prevent OSTimeTick() from readying task */
886 1 ptcb->OSTCBEventPtr = (OS_EVENT *)0; /* Unlink ECB from this task */
887 1 #if ((OS_Q_EN > 0) && (OS_MAX_QS > 0)) || (OS_MBOX_EN > 0)
888 1 ptcb->OSTCBMsg = msg; /* Send message directly to waiting task */
889 1 #else
msg = msg; /* Prevent compiler warning if not used */
#endif
892 1 ptcb->OSTCBStat &= ~msk; /* Clear bit associated with event type */
893 1 if (ptcb->OSTCBStat == OS_STAT_RDY) { /* See if task is ready (could be susp'd) */
894 2 OSRdyGrp |= bity; /* Put task in the ready to run list */
895 2 OSRdyTbl[y] |= bitx;
896 2 }
897 1 return (prio);
898 1 }
899 #endif
900 /*$PAGE*/
901 /*
902 *********************************************************************************************************
903 * MAKE TASK WAIT FOR EVENT TO OCCUR
904 *
905 * Description: This function is called by other uC/OS-II services to suspend a task because an event has
906 * not occurred.
907 *
908 * Arguments : pevent is a pointer to the event control block for which the task will be waiting for.
909 *
910 * Returns : none
911 *
912 * Note : This function is INTERNAL to uC/OS-II and your application should not call it.
913 *********************************************************************************************************
914 */
915 #if OS_EVENT_EN > 0
916 void OS_EventTaskWait (OS_EVENT *pevent) reentrant //using 0
917 {
918 1 INT8U y;
919 1
920 1
921 1 OSTCBCur->OSTCBEventPtr = pevent; /* Store pointer to event control block in TCB */
922 1 y = OSTCBCur->OSTCBY; /* Task no longer ready */
923 1 OSRdyTbl[y] &= ~OSTCBCur->OSTCBBitX;
924 1 if (OSRdyTbl[y] == 0x00) {
925 2 OSRdyGrp &= ~OSTCBCur->OSTCBBitY; /* Clear event grp bit if this was only task pending */
926 2 }
927 1 pevent->OSEventTbl[OSTCBCur->OSTCBY] |= OSTCBCur->OSTCBBitX; /* Put task in waiting list */
928 1 pevent->OSEventGrp |= OSTCBCur->OSTCBBitY;
929 1 }
930 #endif
931 /*$PAGE*/
932 /*
933 *********************************************************************************************************
934 * MAKE TASK READY TO RUN BASED ON EVENT TIMEOUT
935 *
936 * Description: This function is called by other uC/OS-II services to make a task ready to run because a
937 * timeout occurred.
C51 COMPILER V7.06 OS_CORE 07/18/2003 11:05:56 PAGE 17
938 *
939 * Arguments : pevent is a pointer to the event control block which is readying a task.
940 *
941 * Returns : none
942 *
943 * Note : This function is INTERNAL to uC/OS-II and your application should not call it.
944 *********************************************************************************************************
945 */
946 #if OS_EVENT_EN > 0
947 void OS_EventTO (OS_EVENT *pevent) reentrant //using 0
948 {
949 1 INT8U y;
950 1
951 1
952 1 y = OSTCBCur->OSTCBY;
953 1 pevent->OSEventTbl[y] &= ~OSTCBCur->OSTCBBitX;
954 1 if (pevent->OSEventTbl[y] == 0x00) {
955 2 pevent->OSEventGrp &= ~OSTCBCur->OSTCBBitY;
956 2 }
957 1 OSTCBCur->OSTCBStat = OS_STAT_RDY; /* Set status to ready */
958 1 OSTCBCur->OSTCBEventPtr = (OS_EVENT *)0; /* No longer waiting for event */
959 1 }
960 #endif
961 /*$PAGE*/
962 /*
963 *********************************************************************************************************
964 * INITIALIZE EVENT CONTROL BLOCK'S WAIT LIST
965 *
966 * Description: This function is called by other uC/OS-II services to initialize the event wait list.
967 *
968 * Arguments : pevent is a pointer to the event control block allocated to the event.
969 *
970 * Returns : none
971 *
972 * Note : This function is INTERNAL to uC/OS-II and your application should not call it.
973 *********************************************************************************************************
974 */
975 #if OS_EVENT_EN > 0
976 void OS_EventWaitListInit (OS_EVENT *pevent) reentrant //using 0
977 {
978 1 INT8U *ptbl;
979 1
980 1
981 1 pevent->OSEventGrp = 0x00; /* No task waiting on event */
982 1 ptbl = &pevent->OSEventTbl[0];
983 1
984 1 #if OS_EVENT_TBL_SIZE > 0
985 1 *ptbl++ = 0x00;
986 1 #endif
987 1
988 1 #if OS_EVENT_TBL_SIZE > 1
989 1 *ptbl++ = 0x00;
990 1 #endif
991 1
992 1 #if OS_EVENT_TBL_SIZE > 2
993 1 *ptbl++ = 0x00;
994 1 #endif
995 1
996 1 #if OS_EVENT_TBL_SIZE > 3
997 1 *ptbl++ = 0x00;
998 1 #endif
999 1
C51 COMPILER V7.06 OS_CORE 07/18/2003 11:05:56 PAGE 18
1000 1 #if OS_EVENT_TBL_SIZE > 4
1001 1 *ptbl++ = 0x00;
1002 1 #endif
1003 1
1004 1 #if OS_EVENT_TBL_SIZE > 5
1005 1 *ptbl++ = 0x00;
1006 1 #endif
1007 1
1008 1 #if OS_EVENT_TBL_SIZE > 6
1009 1 *ptbl++ = 0x00;
1010 1 #endif
1011 1
1012 1 #if OS_EVENT_TBL_SIZE > 7
1013 1 *ptbl = 0x00;
1014 1 #endif
1015 1 }
1016 #endif
1017 /*$PAGE*/
1018 /*
1019 *********************************************************************************************************
1020 * INITIALIZATION
1021 * INITIALIZE THE FREE LIST OF EVENT CONTROL BLOCKS
1022 *
1023 * Description: This function is called by OSInit() to initialize the free list of event control blocks.
1024 *
1025 * Arguments : none
1026 *
1027 * Returns : none
1028 *********************************************************************************************************
1029 */
1030
1031 static void OS_InitEventList (void) reentrant //using 0
1032 {
1033 1 #if (OS_EVENT_EN > 0) && (OS_MAX_EVENTS > 0)
1034 1 #if (OS_MAX_EVENTS > 1)
1035 1 INT16U i;
1036 1 OS_EVENT *pevent1;
1037 1 OS_EVENT *pevent2;
1038 1
1039 1
1040 1 (void)memset(&OSEventTbl[0], 0, sizeof(OSEventTbl)); /* Clear the event table
- */
1041 1 pevent1 = &OSEventTbl[0];
1042 1 pevent2 = &OSEventTbl[1];
1043 1 for (i = 0; i < (OS_MAX_EVENTS - 1); i++) { /* Init. list of free EVENT control block
-s */
1044 2 pevent1->OSEventType = OS_EVENT_TYPE_UNUSED;
1045 2 pevent1->OSEventPtr = pevent2;
1046 2 #if OS_EVENT_NAME_SIZE > 0
1047 2 (void)strcpy(pevent1->OSEventName, "?"); /* Unknown name
- */
1048 2 #endif
1049 2 pevent1++;
1050 2 pevent2++;
1051 2 }
1052 1 pevent1->OSEventType = OS_EVENT_TYPE_UNUSED;
1053 1 pevent1->OSEventPtr = (OS_EVENT *)0;
1054 1 #if OS_EVENT_NAME_SIZE > 0
1055 1 (void)strcpy(pevent1->OSEventName, "?");
1056 1 #endif
1057 1 OSEventFreeList = &OSEventTbl[0];
1058 1 #else
C51 COMPILER V7.06 OS_CORE 07/18/2003 11:05:56 PAGE 19
OSEventFreeList = &OSEventTbl[0]; /* Only have ONE event control block
- */
OSEventFreeList->OSEventType = OS_EVENT_TYPE_UNUSED;
OSEventFreeList->OSEventPtr = (OS_EVENT *)0;
#if OS_EVENT_NAME_SIZE > 0
(void)strcpy(OSEventFreeList->OSEventName, "?");
#endif
#endif
1066 1 #endif
1067 1 }
1068 /*$PAGE*/
1069 /*
1070 *********************************************************************************************************
1071 * INITIALIZATION
1072 * INITIALIZE MISCELLANEOUS VARIABLES
1073 *
1074 * Description: This function is called by OSInit() to initialize miscellaneou?? 快捷鍵說(shuō)明
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