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