Hello,
My RX0 Interrupt is not called and I don't understand why.
If someone can help me, because I already tried lot of things.
The problem is I never go in my "CAN2_RX0_IRQHandler()".
I properly configured my CAN timings because the received frames are acknoledged by my microcontroller.
Find below My CAN Configuration :
//MODULE CAN
hcan2.Instance = CAN2;
hcan2.Init.Prescaler = 21;
hcan2.Init.Mode = CAN_MODE_NORMAL;
hcan2.Init.SyncJumpWidth = CAN_SJW_1TQ;
hcan2.Init.TimeSeg1 = CAN_BS1_6TQ;
hcan2.Init.TimeSeg2 = CAN_BS2_1TQ;
hcan2.Init.TimeTriggeredMode = DISABLE;
hcan2.Init.AutoBusOff = DISABLE;
hcan2.Init.AutoWakeUp = DISABLE;
hcan2.Init.AutoRetransmission = DISABLE;
hcan2.Init.ReceiveFifoLocked = DISABLE;
hcan2.Init.TransmitFifoPriority = ENABLE;
if (HAL_CAN_Init(&hcan2) != HAL_OK)
{
//_Error_Handler(__FILE__, __LINE__);
}
//FILTRES CAN
CAN_FilterTypeDef sFilterConfig;
sFilterConfig.FilterBank = 0;
sFilterConfig.FilterMode = CAN_FILTERMODE_IDMASK;
sFilterConfig.FilterScale = CAN_FILTERSCALE_32BIT;
sFilterConfig.FilterIdHigh = 0;//0x350 << 5;
sFilterConfig.FilterIdLow = 0;
sFilterConfig.FilterMaskIdHigh = 0;//0xFFF << 5;
sFilterConfig.FilterMaskIdLow = 0;
sFilterConfig.FilterFIFOAssignment = CAN_RX_FIFO0;
sFilterConfig.FilterActivation = DISABLE;
sFilterConfig.SlaveStartFilterBank = 14;
HAL_CAN_ConfigFilter(&hcan2, &sFilterConfig);
//Config CAN
HAL_CAN_Start(&hcan2);
HAL_CAN_ActivateNotification(&hcan2, CAN_IER_FMPIE0|CAN_IER_FFIE0|CAN_IER_FOVIE021);
My CAN MSP config :
void HAL_CAN_MspInit(CAN_HandleTypeDef* hcan)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(hcan->Instance==CAN2)
{
/* USER CODE BEGIN CAN2_MspInit 0 */
/* USER CODE END CAN2_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_CAN2_CLK_ENABLE();
__HAL_RCC_CAN1_CLK_ENABLE();
/**CAN2 GPIO Configuration
PB12 ------> CAN2_RX
PB13 ------> CAN2_TX
*/
GPIO_InitStruct.Pin = GPIO_PIN_12|GPIO_PIN_13;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF9_CAN2;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* CAN2 interrupt Init */
HAL_NVIC_SetPriority(CAN2_RX0_IRQn, 2, 3);
HAL_NVIC_EnableIRQ(CAN2_RX0_IRQn);
/* USER CODE BEGIN CAN2_MspInit 1 */
/* USER CODE END CAN2_MspInit 1 */
}
}
The IRQ function where I never go (placed in stm32xxxx_it.c) :
void CAN2_RX0_IRQHandler(void)
{
fnRxInterrupt();
}
Thank you,
Alexis
