Clear CAN FIFO 0 overflow flag in RX callback

Core/Src/canlog.c

@@ -73,11 +73,15 @@ void HAL_CAN_RxFifo0MsgPendingCallback(CAN_HandleTypeDef *hcan)
     osMessageQueueId_t queue;
     osThreadId_t led_task;
 
-    // TODO: manage the case of FIFO overflow
+    if (__HAL_CAN_GET_FLAG(hcan, CAN_FLAG_FOV0) != RESET) __HAL_CAN_CLEAR_FLAG(hcan, CAN_FLAG_FOV0);
+
     if (HAL_CAN_GetRxMessage(hcan, CAN_RX_FIFO0, &rxHeader, data) != HAL_OK) return;
 
+    if (rxHeader.DLC > 8) return;
+
     if (rxHeader.IDE == CAN_ID_EXT) message.id = rxHeader.ExtId;
     else message.id = rxHeader.StdId;
+
     message.dlc = rxHeader.DLC;
     message.isExtended = (rxHeader.IDE == CAN_ID_EXT);
     message.source = (hcan->Instance == CAN1) ? 1 : 2;