56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
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#include "cmsis_os.h" // CMSIS RTOS header file
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/*----------------------------------------------------------------------------
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* Mutex creation & usage
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*---------------------------------------------------------------------------*/
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void Thread_Mutex (void const *argument); // thread function
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osThreadId tid_Thread_Mutex; // thread id
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osThreadDef (Thread_Mutex, osPriorityNormal, 1, 0); // thread object
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osMutexId mid_Thread_Mutex; // mutex id
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osMutexDef (SampleMutex); // mutex name definition
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int Init_Mutex (void) {
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mid_Thread_Mutex = osMutexCreate (osMutex (SampleMutex));
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if (!tid_Thread_Mutex) {
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; // Mutex object not created, handle failure
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}
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tid_Thread_Mutex = osThreadCreate (osThread(Thread_Mutex), NULL);
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if (!tid_Thread_Mutex) return(-1);
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return(0);
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}
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void Thread_Mutex (void const *argument) {
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osStatus status;
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while (1) {
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; // Insert thread code here...
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status = osMutexWait (mid_Thread_Mutex, NULL);
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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_Thread_Mutex);
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break;
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case osErrorTimeoutResource:
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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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