采用c语言写一段can通信代码

以下是一个简单的CAN通信代码示例，使用了STM32F103C8T6的CAN1接口：

#include "stm32f10x.h"

#define CAN_ID 0x123 // 要发送的CAN ID
#define CAN_DATA_LEN 8 // 要发送的CAN数据长度

int main(void)
{
    // 初始化CAN1接口
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);

    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    CAN_InitTypeDef CAN_InitStructure;
    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_5tq;
    CAN_InitStructure.CAN_BS2 = CAN_BS2_2tq;
    CAN_InitStructure.CAN_Prescaler = 4;
    CAN_Init(CAN1, &CAN_InitStructure);

    // 准备要发送的CAN数据
    uint8_t can_data[CAN_DATA_LEN] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08};

    // 发送CAN数据
    CanTxMsg can_tx_msg;
    can_tx_msg.StdId = CAN_ID;
    can_tx_msg.IDE = CAN_Id_Standard;
    can_tx_msg.RTR = CAN_RTR_Data;
    can_tx_msg.DLC = CAN_DATA_LEN;
    can_tx_msg.Data[0] = can_data[0];
    can_tx_msg.Data[1] = can_data[1];
    can_tx_msg.Data[2] = can_data[2];
    can_tx_msg.Data[3] = can_data[3];
    can_tx_msg.Data[4] = can_data[4];
    can_tx_msg.Data[5] = can_data[5];
    can_tx_msg.Data[6] = can_data[6];
    can_tx_msg.Data[7] = can_data[7];
    CAN_Transmit(CAN1, &can_tx_msg);

    while(1)
    {
    }
}

当CAN数据发送成功后，可以在CAN总线上检测到该数据。注意，以上代码仅为示例代码，实际应用中还需要根据具体需求进行修改和完善。