我需要一份适用于STM32F103C8T6的can通讯源码,并将波特率配置为500000，CAN通讯使用PB8、PB9 pin

以下是适用于STM32F103C8T6的CAN通讯源码，波特率配置为500000，CAN通讯使用PB8、PB9 pin：

#include "stm32f10x.h"

void CAN_Configuration(void);

int main(void)
{
    CAN_Configuration();

    while(1)
    {
        // CAN通讯的应用代码
    }
}

void CAN_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    CAN_InitTypeDef CAN_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);

    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_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_3tq;
    CAN_InitStructure.CAN_Prescaler = 4; // 根据波特率计算得出

    CAN_Init(CAN1, &CAN_InitStructure);

    CAN_FilterInitTypeDef CAN_FilterInitStructure;

    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 = 0;
    CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;

    CAN_FilterInit(&CAN_FilterInitStructure);
}