How to properly configure the CAN2 RX Interrupt on STM32 ?

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