stm32f413can接收中断不响应

只看该作者 · 2021-3-19 15:36

本帖最后由 tongwei 于 2021-3-23 13:00 编辑

调试现象：can1，can2，can3发送数据均正常，接收采用中断接收方式，can1，can3能响应中断，can2无法进入接收中断，曾怀疑can2配置的CAN_FilterNumber参数设置的不对，但是试验了0~27，都不行，各位大佬有啥好的办法，还望指教。的配置代码如下：
void CAN1_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  CAN_InitTypeDef CAN_InitStructure;
  CAN_FilterInitTypeDef CAN_FilterInitStructure;
  NVIC_InitTypeDef  NVIC_InitStructure;

  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE);
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1,ENABLE);

  GPIO_PinAFConfig(GPIOA,GPIO_PinSource11,GPIO_AF_CAN1);
  GPIO_PinAFConfig(GPIOA,GPIO_PinSource12,GPIO_AF_CAN1);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11| GPIO_Pin_12;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  CAN_StructInit(&CAN_InitStructure);
  CAN_DeInit(CAN1);
  CAN_InitStructure.CAN_TTCM = DISABLE;
  CAN_InitStructure.CAN_ABOM = DISABLE;
  CAN_InitStructure.CAN_AWUM = DISABLE;
  CAN_InitStructure.CAN_NART = ENABLE;
  CAN_InitStructure.CAN_RFLM = DISABLE;
  CAN_InitStructure.CAN_TXFP = DISABLE;
  CAN_InitStructure.CAN_Mode = CAN_Mode_Normal;
  CAN_InitStructure.CAN_SJW = CAN_SJW_1tq;
  CAN_InitStructure.CAN_BS1 = CAN_BS1_4tq;
  CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
  CAN_InitStructure.CAN_Prescaler = 10;
  CAN_Init(CAN1, &CAN_InitStructure);

  CAN_FilterInitStructure.CAN_FilterNumber=0;
  CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;
  CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;
  CAN_FilterInitStructure.CAN_FilterIdHigh=0x0000;
  CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;
  CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_Filter_FIFO0;
  CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;
  CAN_FilterInit(CAN1,&CAN_FilterInitStructure);

  CAN_ITConfig(CAN1,CAN_IT_FMP0,ENABLE);

  NVIC_InitStructure.NVIC_IRQChannel = CAN1_RX0_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

void CAN2_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  CAN_InitTypeDef CAN_InitStructure;
  CAN_FilterInitTypeDef CAN_FilterInitStructure;
  NVIC_InitTypeDef  NVIC_InitStructure;

  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG,ENABLE);
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN2,ENABLE);
  GPIO_PinAFConfig(GPIOG,GPIO_PinSource11,GPIO_AF_CAN2);
  GPIO_PinAFConfig(GPIOG,GPIO_PinSource12,GPIO_AF_CAN2);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11| GPIO_Pin_12;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_Init(GPIOG, &GPIO_InitStructure);

  CAN_StructInit(&CAN_InitStructure);
  CAN_DeInit(CAN2);
  CAN_InitStructure.CAN_TTCM = DISABLE;
  CAN_InitStructure.CAN_ABOM = DISABLE;
  CAN_InitStructure.CAN_AWUM = DISABLE;
  CAN_InitStructure.CAN_NART = ENABLE;
  CAN_InitStructure.CAN_RFLM = DISABLE;
  CAN_InitStructure.CAN_TXFP = DISABLE;
  CAN_InitStructure.CAN_Mode = CAN_Mode_Normal;
  CAN_InitStructure.CAN_SJW = CAN_SJW_1tq;
  CAN_InitStructure.CAN_BS1 = CAN_BS1_4tq;
  CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
  CAN_InitStructure.CAN_Prescaler = 10;
  CAN_Init(CAN2, &CAN_InitStructure);

  CAN_FilterInitStructure.CAN_FilterNumber=14;
  CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;
  CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;
  CAN_FilterInitStructure.CAN_FilterIdHigh=0x0000;
  CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;
  CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_Filter_FIFO0;
  CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;
  CAN_FilterInit(CAN2,&CAN_FilterInitStructure);

  CAN_ITConfig(CAN2,CAN_IT_FMP0,ENABLE);

  NVIC_InitStructure.NVIC_IRQChannel = CAN2_RX0_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}