kelvinelton wrote on Friday, March 10, 2017:
I am currently developing a project with FreeRTOS (v8.2.1) on ARM Cortex-M3 (STM32F103xE) and IAR Compiler and all the software timers callbacks stopped being called after a systick overflow.
I also created a minimal example and the result was the same. The timer worked just fine until the overflow on xTickCount. Am I missing something here or is there really a bug?
I also tried to create the timer within a task, or starting it after osKernelStart(), but it’s always the same result.
FreeRTOSConfig.h:
...
#define configUSE_16_BIT_TICKS 1
#define configTICK_RATE_HZ ((TickType_t)1000)
#define configUSE_TIMERS 1
#define configTIMER_TASK_PRIORITY 3
#define configTIMER_QUEUE_LENGTH 6
#define configMINIMAL_STACK_SIZE ((uint16_t)128)
#define configTIMER_TASK_STACK_DEPTH configMINIMAL_STACK_SIZE
...
main.c:
static volatile uint32_t testtick = 0;
TimerHandle_t test_timer = NULL;
void testticktimer(void * n) {
testtick += 10;
}
int main() {
// Hardware configuration (clock, systick, ...)
test_timer = xTimerCreate("test_timer", pdMS_TO_TICKS(10), pdTRUE, (void *) 2, testticktimer);
xTimerStart(test_timer, 0);
osKernelStart();
while(1){}
}