stm32蓝牙模块代码

以下是一个基于STM32的蓝牙模块代码示例，使用USART通信：

#include "stm32f10x.h"

#define TXBUFFERSIZE 100
#define RXBUFFERSIZE 100

void USART1_Init(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);

uint8_t TxBuffer[TXBUFFERSIZE];
uint8_t RxBuffer[RXBUFFERSIZE];
__IO uint16_t TxCount = 0;
__IO uint16_t RxCount = 0;

int main(void)
{
    GPIO_Configuration();
    USART1_Init();
    NVIC_Configuration();

    while(1)
    {
        if (RxCount != 0)
        {
            // 处理接收到的数据
            // ...

            // 清空接收缓冲区
            memset(RxBuffer, 0, RXBUFFERSIZE);
            RxCount = 0;
        }
    }
}

void USART1_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE);

    // 配置USART1的TX引脚
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    // 配置USART1的RX引脚
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    // 配置USART1
    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);

    // 使能USART1
    USART_Cmd(USART1, ENABLE);
}

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    // 配置PA0作为按键输入
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void NVIC_Configuration(void)
{
    NVIC_InitTypeDef NVIC_InitStructure;

    // 使能USART1的接收中断
    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    // 使能EXTI0中断
    NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    // 配置PA0为中断源
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);

    // 配置PA0的中断方式为下降沿触发
    EXTI_InitTypeDef EXTI_InitStructure;
    EXTI_InitStructure.EXTI_Line = EXTI_Line0;
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_Init(&EXTI_InitStructure);
}

// USART1中断处理函数
void USART1_IRQHandler(void)
{
    if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
    {
        // 读取接收到的数据
        RxBuffer[RxCount++] = USART_ReceiveData(USART1);
    }

    if(USART_GetITStatus(USART1, USART_IT_TXE) != RESET)
    {
        // 发送缓冲区中的数据
        USART_SendData(USART1, TxBuffer[TxCount++]);

        // 发送完毕后禁用TXE中断
        if(TxCount == TXBUFFERSIZE)
        {
            USART_ITConfig(USART1, USART_IT_TXE, DISABLE);
        }
    }
}

// EXTI0中断处理函数
void EXTI0_IRQHandler(void)
{
    if(EXTI_GetITStatus(EXTI_Line0) != RESET)
    {
        // 按键按下，向蓝牙模块发送数据
        sprintf((char*)TxBuffer, "Hello, Bluetooth!\r\n");
        TxCount = 0;
        USART_ITConfig(USART1, USART_IT_TXE, ENABLE);

        EXTI_ClearITPendingBit(EXTI_Line0);
    }
}

此代码仅供参考，具体实现可能根据不同的蓝牙模块和应用场景有所不同。