用STM32F103C8T6的库函数做个CAN接收数据处理的程序，外部8M时钟，PA0外部上拉，PA0默认低电平，CAN波特率500K,帧ID：0000 00B4,数据：00 00 00 01 00 00 00 00，当CAN接收数据是00 00 00 01 00 00 00 00时，PA0输出高电平否则输出低电平

好的，我可以为您提供一个简单的CAN接收数据处理程序，如下所示：

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

GPIO_InitTypeDef GPIO_InitStructure;
CAN_InitTypeDef CAN_InitStructure;
CAN_FilterInitTypeDef CAN_FilterInitStructure;
CanRxMsg RxMessage;

void GPIO_Configuration(void);
void CAN_Configuration(void);
void NVIC_Configuration(void);

int main(void)
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);

    GPIO_Configuration();
    CAN_Configuration();
    NVIC_Configuration();

    while (1)
    {
        if (CAN_MessagePending(CAN1, CAN_FIFO0) != 0)
        {
            CAN_Receive(CAN1, CAN_FIFO0, &RxMessage);

            if (RxMessage.StdId == 0xB4 && RxMessage.IDE == CAN_ID_STD && RxMessage.DLC == 8)
            {
                if (RxMessage.Data[0] == 0x00 && RxMessage.Data[1] == 0x00 && RxMessage.Data[2] == 0x00 && RxMessage.Data[3] == 0x01 && RxMessage.Data[4] == 0x00 && RxMessage.Data[5] == 0x00 && RxMessage.Data[6] == 0x00 && RxMessage.Data[7] == 0x00)
                {
                    GPIO_WriteBit(GPIOA, GPIO_Pin_0, Bit_SET);
                }
                else
                {
                    GPIO_WriteBit(GPIOA, GPIO_Pin_0, Bit_RESET);
                }
            }
        }
    }
}

void GPIO_Configuration(void)
{
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void CAN_Configuration(void)
{
    CAN_DeInit(CAN1);

    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_4tq;
    CAN_InitStructure.CAN_BS2 = CAN_BS2_3tq;
    CAN_InitStructure.CAN_Prescaler = 8;

    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 = 0x00B4 << 5;
    CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000;
    CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0x07FF << 5;
    CAN_FilterInitStructure.CAN_FilterFIFOAssignment = CAN_FIFO0;
    CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;

    CAN_FilterInit(&CAN_FilterInitStructure);
}

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 = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    CAN_ITConfig(CAN1, CAN_IT_FMP0, ENABLE);
}

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

这个程序可以在PA0引脚上输出CAN接收到的数据是否为"00 00 00 01 00 00 00 00"，您可以在程序中修改GPIO配置，以便在PA0引脚上输出高电平或低电平。如果您需要修改CAN波特率或帧ID，可以在程序中修改CAN的初始化和滤波器配置。希望这个程序可以帮到您！