Posted on March 28, 2018 at 09:03Hello, I dont get data with canbus interrupt. Can you help me please? my canbus config function :
void CAN_Config(void)
{
__HAL_RCC_CAN2_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
// CAN2 RX Pin
GPIO_InitStruct.Pin = GPIO_PIN_12;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Alternate = GPIO_AF9_CAN2;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
// CAN2 TX Pin
GPIO_InitStruct.Pin = GPIO_PIN_13;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Alternate = GPIO_AF9_CAN2;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
CAN2_Handle.Instance = CAN2;
CAN2_Handle.Init.Prescaler = 56; //56.25
CAN2_Handle.Init.Mode =CAN_MODE_NORMAL;
CAN2_Handle.Init.SyncJumpWidth = CAN_SJW_4TQ;
CAN2_Handle.Init.TimeSeg1 = CAN_BS1_9TQ;
CAN2_Handle.Init.TimeSeg2 = CAN_BS2_6TQ;
CAN2_Handle.Init.AutoBusOff = DISABLE;
CAN2_Handle.Init.AutoRetransmission = DISABLE;
CAN2_Handle.Init.AutoWakeUp = DISABLE;
CAN2_Handle.Init.ReceiveFifoLocked = DISABLE;
CAN2_Handle.Init.TimeTriggeredMode = DISABLE;
CAN2_Handle.Init.TransmitFifoPriority = DISABLE;
CAN2_Handle.State = HAL_CAN_STATE_READY;
// HAL_CAN_Init(&CAN2_Handle);
if(HAL_CAN_Init(&CAN2_Handle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
CAN2_Filter.FilterBank = 0;
CAN2_Filter.FilterMode = CAN_FILTERMODE_IDMASK;
CAN2_Filter.FilterScale = CAN_FILTERSCALE_32BIT;
CAN2_Filter.FilterIdHigh = 0x0000;
CAN2_Filter.FilterIdLow = 0x0000;
CAN2_Filter.FilterMaskIdHigh = 0x0000;
CAN2_Filter.FilterMaskIdLow = 0x0000;
CAN2_Filter.FilterFIFOAssignment = CAN_RX_FIFO0;
CAN2_Filter.FilterActivation = ENABLE;
CAN2_Filter.SlaveStartFilterBank = 14;
if (HAL_CAN_ConfigFilter(&CAN2_Handle, &CAN2_Filter) != HAL_OK)
{
/* Filter configuration Error */
Error_Handler();
}
HAL_CAN_Start(&CAN2_Handle);
HAL_CAN_ActivateNotification(&CAN2_Handle, CAN_IT_RX_FIFO0_MSG_PENDING);
__HAL_CAN_ENABLE_IT(&CAN2_Handle, CAN_IT_RX_FIFO0_MSG_PENDING);
// HAL_NVIC_SetPriority(CAN2_TX_IRQn, 2, 2);
HAL_NVIC_SetPriority(CAN2_RX0_IRQn, 0, 0);
// HAL_NVIC_SetPriority(CAN2_RX1_IRQn, 1, 1);
// HAL_NVIC_EnableIRQ( CAN2_TX_IRQn);
HAL_NVIC_EnableIRQ(CAN2_RX0_IRQn);
