stm32f103c8t6can通信库函数代码

以下是基于标准库函数的STM32F103C8T6 CAN通信代码示例：

#include "stm32f10x.h"
#include "stm32f10x_can.h"
#include "stm32f10x_rcc.h"
#include "stm32f10x_gpio.h"

CAN_InitTypeDef CAN_InitStructure;
CAN_FilterInitTypeDef CAN_FilterInitStructure;
CanTxMsg TxMessage;
CanRxMsg RxMessage;

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    //PA11:CAN1-RX
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    //PA12:CAN1-TX
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void NVIC_Configuration(void)
{
    NVIC_InitTypeDef NVIC_InitStructure;

    NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

void CAN_Configuration(void)
{
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);

    CAN_InitStructure.CAN_TTCM = DISABLE;
    CAN_InitStructure.CAN_ABOM = DISABLE;
    CAN_InitStructure.CAN_AWUM = DISABLE;
    CAN_InitStructure.CAN_NART = DISABLE;
    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_8tq;
    CAN_InitStructure.CAN_BS2 = CAN_BS2_7tq;
    CAN_InitStructure.CAN_Prescaler = 4;
    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(&CAN_FilterInitStructure);

    CAN_ITConfig(CAN1, CAN_IT_FMP0, ENABLE);
}

void USB_LP_CAN1_RX0_IRQHandler(void)
{
    if(CAN_GetITStatus(CAN1, CAN_IT_FMP0) != RESET)
    {
        CAN_Receive(CAN1, CAN_FIFO0, &RxMessage);
        CAN_ClearITPendingBit(CAN1, CAN_IT_FMP0);
    }
}

int main(void)
{
    GPIO_Configuration();
    NVIC_Configuration();
    CAN_Configuration();

    TxMessage.StdId = 0x321;
    TxMessage.ExtId = 0x01;
    TxMessage.RTR = CAN_RTR_DATA;
    TxMessage.IDE = CAN_ID_STD;
    TxMessage.DLC = 1;
    TxMessage.Data[0] = 0xAA;

    while(1)
    {
        CAN_Transmit(CAN1, &TxMessage);
        delay(1000);
    }
}

需要注意的是，CAN通信需要使用CAN控制器模块进行通信，因此还需要对STM32F103C8T6的CAN硬件进行正确的配置。同时在发送和接收数据时，都需要通过CanTxMsg和CanRxMsg结构体来进行传输。