[技术讨论] GD32F103C8T6 CAN配置和发送问题

//main.c

void RCC_Configuration(void);

void NVIC_Configuration(void);



void RCC_Configuration(void)

{

    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_GPIOA , ENABLE); 

//    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_GPIOB , ENABLE);          

//    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_GPIOC , ENABLE);

//    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_GPIOD , ENABLE);

//    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_GPIOE , ENABLE);

//    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_AF  , ENABLE);



//    RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_USART1, ENABLE);

    RCC_APB1PeriphClock_Enable(RCC_APB1PERIPH_CAN1, ENABLE);

}



/**

  * [url=home.php?mod=space&uid=247401]@brief[/url]  Configure the nested vectored interrupt controller.

  * @param  None

  * @retval None

  */

void NVIC_Configuration(void)

{

    NVIC_InitPara NVIC_InitStructure;



#ifdef  VECT_TAB_RAM

  /* Set the Vector Table base location at 0x20000000 */

    NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);

#else  /* VECT_TAB_FLASH  */

  /* Set the Vector Table base location at 0x08000000 */

    NVIC_VectTableSet(NVIC_VECTTAB_FLASH, 0x0);  

#endif



    NVIC_PRIGroup_Enable(NVIC_PRIGROUP_1);

    NVIC_InitStructure.NVIC_IRQ = USB_LP_CAN1_RX0_IRQn;

    NVIC_InitStructure.NVIC_IRQPreemptPriority = 0;

    NVIC_InitStructure.NVIC_IRQSubPriority = 0x0;

    NVIC_InitStructure.NVIC_IRQEnable = ENABLE;

    NVIC_Init(&NVIC_InitStructure);

}



int main(void)

{

 //   RCC_Configuration();

//    NVIC_Configuration();

    SysTick_Configuration();





    CAN_GPIO_Configuration();

    CAN_Configuration(); 



//    CAN_INTConfig(CAN1, CAN_INT_RFNE0, ENABLE);

        





    while(1) {

        TxMessage.Data[0] = 0x55;

        CAN_Transmit(CAN1, &TxMessage);

    }

}

//



//can.c

void CAN_GPIO_Configuration(void)

{

    GPIO_InitPara GPIO_InitStructure;

        

        RCC_APB2PeriphClock_Enable(RCC_APB2PERIPH_GPIOA , ENABLE); 

    RCC_APB1PeriphClock_Enable(RCC_APB1PERIPH_CAN1, ENABLE);

    /* Remap CAN GPIOs */

    //GPIO_PinRemapConfig(GPIO_REMAP2_CAN1 , ENABLE);



    /* Configure CAN TX pin */

    GPIO_InitStructure.GPIO_Pin = GPIO_PIN_12;

    GPIO_InitStructure.GPIO_Mode = GPIO_MODE_AF_PP;

    GPIO_InitStructure.GPIO_Speed = GPIO_SPEED_50MHZ;

    GPIO_Init(GPIOA, &GPIO_InitStructure);

        

        /* Configure CAN RX pin */

    GPIO_InitStructure.GPIO_Pin = GPIO_PIN_11;

    GPIO_InitStructure.GPIO_Mode = GPIO_MODE_IPU;

    GPIO_Init(GPIOA, &GPIO_InitStructure);

}



/**

  * @brief  Configures the CAN.

  * @param  None

  * @retval None

  */

void CAN_Configuration(void)

{

    CAN_InitPara        CAN_InitStructure;

    CAN_FilterInitPara  CAN_FilterInitStructure;

    /* CAN register init */

    CAN_DeInit(CAN1);



    CAN_StructInit(&CAN_InitStructure);



    /* CAN cell init */

    CAN_InitStructure.CAN_TTC = DISABLE;

    CAN_InitStructure.CAN_ABOR = DISABLE;

    CAN_InitStructure.CAN_AWK = DISABLE;

    CAN_InitStructure.CAN_ARD = DISABLE;

    CAN_InitStructure.CAN_RFOD = DISABLE;

    CAN_InitStructure.CAN_TFO = DISABLE;

    CAN_InitStructure.CAN_Mode = CAN_MODE_NORMAL;

    CAN_InitStructure.CAN_SJW = CAN_SJW_1TQ;

    CAN_InitStructure.CAN_BS1 = CAN_BS1_3TQ;

    CAN_InitStructure.CAN_BS2 = CAN_BS2_5TQ;

    CAN_InitStructure.CAN_Prescaler = 4;

    CAN_Init(CAN1, &CAN_InitStructure);



    /* CAN filter init */

    CAN_FilterInitStructure.CAN_FilterNumber = 0;

    CAN_FilterInitStructure.CAN_FilterMode = CAN_FILTERMODE_MASK;

    CAN_FilterInitStructure.CAN_FilterScale = CAN_FILTERSCALE_32BIT;

    CAN_FilterInitStructure.CAN_FilterListHigh = 0x0000;

    CAN_FilterInitStructure.CAN_FilterListLow = 0x0000;

    CAN_FilterInitStructure.CAN_FilterMaskListHigh = 0x0000;

    CAN_FilterInitStructure.CAN_FilterMaskListLow = 0x0000;

    CAN_FilterInitStructure.CAN_FilterFIFOAssociation = 0;

    CAN_FilterInitStructure.CAN_FilterWork = ENABLE;

    CAN_FilterInit(&CAN_FilterInitStructure);

  

    /* Transmit */

    TxMessage.StdId = 0x602;

    TxMessage.ExtId = 0x00;

    TxMessage.FT = CAN_FT_DATA; 

    TxMessage.FF = CAN_FF_STANDARD;  

    TxMessage.DLC = 8;

}