Posted on July 24, 2015 at 15:43Hello there,
I am using STM 32F4 cube to generate code for my application (stm32f4discovery board). I Can succesfully send can messages using:
/* CAN message to send */
CanTxMsgTypeDef TxMess;
TxMess.ExtId = 0x234501;
//TxMess.StdId = 0x241;
TxMess.RTR = CAN_RTR_DATA;
TxMess.IDE = CAN_ID_EXT;
TxMess.DLC = 4;
TxMess.Data[0] = 0x04;
TxMess.Data[1] = 0x01;
TxMess.Data[2] = 0x02;
TxMess.Data[3] = 0x11;
hcan1.pTxMsg = &TxMess;
HAL_StatusTypeDef status1 = HAL_CAN_Transmit(&hcan1, 10);
But I dont know how to configure the receiver using Rx interrupt. I Am looking up the examples from the Cube but I cannot get it working.
I have enabled the interrupts:
if(HAL_CAN_Receive_IT(&hcan1, CAN_FIFO0) != HAL_OK)
{
return 0;
}
And now I am waiting with a breakpoint in the generated callback by the cube:
/**
* @brief This function handles CAN1 RX0 interrupts.
*/
void CAN1_RX0_IRQHandler(void)
{
/* USER CODE BEGIN CAN1_RX0_IRQn 0 */
/* USER CODE END CAN1_RX0_IRQn 0 */
HAL_CAN_IRQHandler(&hcan1);
/* USER CODE BEGIN CAN1_RX0_IRQn 1 */
/* USER CODE END CAN1_RX0_IRQn 1 */
}
I havent set any ID filters for rx message. What am I missing, why the receiving doesnt work? I would apreciate all help!
#stm32 #interrupt #can #hal
