Hello and thank you for your answer
I may have misunderstood my question
Task 2 is supposed to be blocked until the semaphore is released by task 1 after the 2-second osDelay
I fixed the problem by adding just after the creation of the semaphore the function: xSemaphoreTake (BinarySEMHandle, 1).
On the other hand, if I remove this function the second task is directly executed and the function osSemaphoreWait (BinarySEMHandle, osWaitForever); is not blocking which for me confirms that the function BinarySEMHandle = osSemaphoreCreate (osSemaphore (BinarySEM), 1); by default, returns the semaphore available from its creation by this function
This also applies to the semaphore counter, I added two functions to block the third task will be synchronized by the Tasks 1 and 2.
/* definition and creation of BinarySEM */
osSemaphoreDef(BinarySEM);
BinarySEMHandle = osSemaphoreCreate(osSemaphore(BinarySEM), 1);
xSemaphoreTake(BinarySEMHandle, 1);
/* definition and creation of myCountingSem01 */
osSemaphoreDef(myCountingSem01);
myCountingSem01Handle = osSemaphoreCreate(osSemaphore(myCountingSem01), 2);
xSemaphoreTake(myCountingSem01Handle, 1);
xSemaphoreTake(myCountingSem01Handle, 1);
void SemTache1(void const * argument)
{
/* USER CODE BEGIN SemTache1 */
/* Infinite loop */
for(;;) {
for(int i=0; i<10; i++) {
HAL_GPIO_TogglePin(GPIOB, LED1_Pin);
osDelay(80);
}
HAL_GPIO_WritePin(GPIOB, LED1_Pin, GPIO_PIN_SET);
osDelay(2000);
osSemaphoreRelease(BinarySEMHandle);
//osThreadTerminate(SemTache1);
}
/* USER CODE END SemTache1 */
}
void SemTache2(void const * argument)
{
/* USER CODE BEGIN SemTache2 */
/* Infinite loop */
for(;;) {
osSemaphoreWait(BinarySEMHandle, osWaitForever);
for(int i=0; i<10; i++) {
HAL_GPIO_TogglePin(GPIOB, LED2_Pin);
osDelay(80);
}
HAL_GPIO_WritePin(GPIOB, LED2_Pin, GPIO_PIN_SET);
osDelay(2000);
osSemaphoreRelease(myCountingSem01Handle);
}
/* USER CODE END SemTache2 */
}
void SemTache3(void const * argument)
{
/* USER CODE BEGIN SemTache3 */
/* Infinite loop */
for(;;) {
osSemaphoreWait(myCountingSem01Handle, osWaitForever);
osSemaphoreWait(myCountingSem01Handle, osWaitForever);
for(int i=0; i<10; i++) {
HAL_GPIO_TogglePin(GPIOB, LED3_Pin);
osDelay(80);
}
HAL_GPIO_WritePin(GPIOB, LED3_Pin, GPIO_PIN_SET);
}
/* USER CODE END SemTache3 */
}
