52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
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#include "cmsis_os2.h" // CMSIS RTOS header file
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/*----------------------------------------------------------------------------
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* Event Flags creation & usage
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*---------------------------------------------------------------------------*/
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#define FLAGS_MSK1 0x00000001U
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osEventFlagsId_t evt_id; // event flasg id
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osThreadId_t tid_Thread_EventSender; // thread id 1
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osThreadId_t tid_Thread_EventReceiver; // thread id 2
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void Thread_EventSender (void *argument); // thread function 1
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void Thread_EventReceiver (void *argument); // thread function 2
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int Init_Events (void) {
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evt_id = osEventFlagsNew(NULL);
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if (evt_id == NULL) {
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; // Event Flags object not created, handle failure
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}
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tid_Thread_EventSender = osThreadNew(Thread_EventSender, NULL, NULL);
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if (tid_Thread_EventSender == NULL) {
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return(-1);
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}
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tid_Thread_EventReceiver = osThreadNew(Thread_EventReceiver, NULL, NULL);
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if (tid_Thread_EventReceiver == NULL) {
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return(-1);
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}
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return(0);
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}
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void Thread_EventSender (void *argument) {
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while (1) {
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osEventFlagsSet(evt_id, FLAGS_MSK1);
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osThreadYield(); // suspend thread
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}
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}
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void Thread_EventReceiver (void *argument) {
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uint32_t flags;
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while (1) {
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flags = osEventFlagsWait(evt_id, FLAGS_MSK1, osFlagsWaitAny, osWaitForever);
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//handle event
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}
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}
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