基于stm32f103c8t6蓝牙通信代码

以下是一个基于STM32F103C8T6蓝牙通信的简单实现代码，使用USART1作为串口通信接口，使用蓝牙模块HC-05进行通信，仅供参考：

#include "stm32f10x.h"

#define USART1_TX_Pin       GPIO_Pin_9
#define USART1_RX_Pin       GPIO_Pin_10

#define USART1_TX_H()       GPIO_SetBits(GPIOA, USART1_TX_Pin)
#define USART1_TX_L()       GPIO_ResetBits(GPIOA, USART1_TX_Pin)

#define USART1_RX()         GPIO_ReadInputDataBit(GPIOA, USART1_RX_Pin)

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = USART1_TX_Pin;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = USART1_RX_Pin;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void USART1_Configuration(void)
{
    USART_InitTypeDef USART_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

    USART_InitStructure.USART_BaudRate = 9600;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
    USART_Init(USART1, &USART_InitStructure);

    USART_Cmd(USART1, ENABLE);
}

void Delay_us(u32 nus)
{
    u32 i;

    for (i = 0; i < nus; i++)
    {
        __NOP();
        __NOP();
        __NOP();
        __NOP();
        __NOP();
        __NOP();
        __NOP();
        __NOP();
    }
}

void USART1_SendByte(u8 ch)
{
    while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);

    USART_SendData(USART1, ch);
}

u8 USART1_ReceiveByte(void)
{
    while (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET);

    return USART_ReceiveData(USART1);
}

void Bluetooth_SendString(char *str)
{
    while (*str)
    {
        USART1_SendByte(*str++);
    }
}

void Bluetooth_ReceiveString(char *str, u16 max_len)
{
    u16 i;

    for (i = 0; i < max_len - 1; i++)
    {
        str[i] = USART1_ReceiveByte();

        if (str[i] == '\r' || str[i] == '\n')
        {
            str[i] = '\0';
            break;
        }
    }

    str[max_len - 1] = '\0';
}

int main(void)
{
    char buffer[100];

    GPIO_Configuration();
    USART1_Configuration();

    while (1)
    {
        Bluetooth_ReceiveString(buffer, 100);

        // 处理接收到的数据

        Bluetooth_SendString("Received: ");
        Bluetooth_SendString(buffer);
        Bluetooth_SendString("\r\n");
    }
}

这段代码实现了USART1的初始化、发送和接收，并通过蓝牙模块进行数据的发送和接收。具体的通信协议需要根据具体的需求进行定义和实现。