Start timer once for automatic rearming with semaphore release

- Discard previous solution with timer only

Core/Src/canlog.c

@@ -113,9 +113,11 @@ void vCANLoggerListen(void *argument)
         {
             // TODO: parse message send message to serial/uart
 
-            HAL_GPIO_WritePin(led_can1.port, led_can1.pin, GPIO_PIN_SET);
-            osTimerStart(xHeartbeatTimerCAN1, 25U);
+
+            bus = (hcan->Instance == CAN1) ? xLEDSemaphoreCAN1 : xLEDSemaphoreCAN2
+            osSemaphoreRelease(bus);
         }
+
     }
     /* CODE END */
 }
@@ -131,7 +133,17 @@ void vLEDHeartbeat(void *argument)
 {
   /* CODE BEGIN */
   LED_Config *led = (LED_Config*)argument;
-  HAL_GPIO_WritePin(led->port, led->pin, GPIO_PIN_RESET);
+
+  if (osSemaphoreAcquire(xCanActivitySemaphore, 0U) == osOK)
+  {
+      HAL_GPIO_WritePin(led->port, led->pin, GPIO_PIN_SET);
+      osTimerStart(xHeartbeatTimerCAN1, 25U);
+  }
+  else
+  {
+      HAL_GPIO_WritePin(led->port, led->pin, GPIO_PIN_RESET);
+  }
+
   /* CODE END */
 }
 /* END vLEDHeartbeat */

Core/Src/main.c

@@ -66,8 +66,14 @@ LED_Config led_can1 = {GPIOB, GPIO_PIN_2};
 LED_Config led_can2 = {GPIOB, GPIO_PIN_5};
 LED_Config led_error = {GPIOB, GPIO_PIN_3};
 
+osSemaphoreId_t xLEDSemaphoreCAN1;
+osSemaphoreId_t xLEDSemaphoreCAN2;
+
 osTimerId_t xHeartbeatTimerCAN1;
 osTimerId_t xHeartbeatTimerCAN2;
+
+osMessageQueueId_t xCAN1RxQueue;
+osMessageQueueId_t xCAN2RxQueue;
 /* USER CODE END PV */
 
 /* Private function prototypes -----------------------------------------------*/
@@ -147,10 +153,7 @@ int main(void)
   /* USER CODE END RTOS_MUTEX */
 
   /* USER CODE BEGIN RTOS_SEMAPHORES */
-  osSemaphoreId_t xLEDSemaphoreCAN1;
   xLEDSemaphoreCAN1 = osSemaphoreNew(255, 0, NULL);
-
-  osSemaphoreId_t xLEDSemaphoreCAN2;
   xLEDSemaphoreCAN2 = osSemaphoreNew(255, 0, NULL);
 
   if (xLEDSemaphoreCAN1 == NULL || xLEDSemaphoreCAN2 == NULL) Error_Handler();
@@ -160,14 +163,14 @@ int main(void)
   xHeartbeatTimerCAN1 = osTimerNew(vLEDHeartbeat, osTimerOnce, &led_can1, NULL);
   xHeartbeatTimerCAN2 = osTimerNew(vLEDHeartbeat, osTimerOnce, &led_can2, NULL);
 
+  osTimerStart(xHeartbeatTimerCAN1, 25U);
+  osTimerStart(xHeartbeatTimerCAN2, 25U);
+
   if (xHeartbeatTimerCAN1 == NULL || xHeartbeatTimerCAN2 == NULL) Error_Handler();
   /* USER CODE END RTOS_TIMERS */
 
   /* USER CODE BEGIN RTOS_QUEUES */
-  osMessageQueueId_t xCAN1RxQueue;
   xCAN1RxQueue = osMessageQueueNew(32, sizeof(CanMessage_t), NULL);
-
-  osMessageQueueId_t xCAN2RxQueue;
   xCAN2RxQueue = osMessageQueueNew(32, sizeof(CanMessage_t), NULL);
 
   if (xCAN1RxQueue == NULL || xCAN2RxQueue == NULL) Error_Handler();