53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
#include "cmsis_os2.h" // CMSIS RTOS header file
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/*----------------------------------------------------------------------------
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* Mutex creation & usage
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*---------------------------------------------------------------------------*/
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osMutexId_t mid_Mutex; // mutex id
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osThreadId_t tid_Thread_Mutex; // thread id
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void Thread_Mutex (void *argument); // thread function
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int Init_Mutex (void) {
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mid_Mutex = osMutexNew(NULL);
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if (mid_Mutex == NULL) {
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; // Mutex object not created, handle failure
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}
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tid_Thread_Mutex = osThreadNew(Thread_Mutex, NULL, NULL);
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if (tid_Thread_Mutex == 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_Mutex (void *argument) {
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osStatus_t status;
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while (1) {
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; // Insert thread code here...
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status = osMutexAcquire(mid_Mutex, 0U);
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switch (status) {
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case osOK:
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; // Use protected code here...
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osMutexRelease(mid_Mutex);
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break;
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case osErrorResource:
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break;
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case osErrorParameter:
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break;
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case osErrorISR:
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break;
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default:
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break;
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}
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osThreadYield(); // suspend thread
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}
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}
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