单片机利用蓝牙将数据实时传输给手机的代码用keil怎么写

在Keil中编写单片机利用蓝牙将数据实时传输给手机的代码，需要先选择一个适合的蓝牙模块，并在Keil中添加对应的库文件。以下是一个基于Keil的简单蓝牙串口通信的示例代码：

#include <stm32f10x.h>
#include <stdio.h>

void USART1_Init(void);
void USART1_SendChar(char ch);
void USART1_SendString(char* str);
void GPIO_Configuration(void);
void NVIC_Configuration(void);

int main(void)
{
    char buffer[1024];
    int i = 0;

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

    while (1)
    {
        if (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == SET)
        {
            buffer[i] = USART_ReceiveData(USART1);
            i++;
            if (i >= 1024)
            {
                i = 0;
            }
            USART_SendData(USART1, buffer[i - 1]);
            while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
        }

        if ((buffer[i - 1] == '\n') || (buffer[i - 1] == '\r'))
        {
            buffer[i - 1] = '\0';
            USART1_SendString(buffer);
            i = 0;
        }
    }
}

void USART1_Init(void)
{
    USART_InitTypeDef USART_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, 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 USART1_SendChar(char ch)
{
    USART_SendData(USART1, ch);
    while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
}

void USART1_SendString(char* str)
{
    while (*str)
    {
        USART1_SendChar(*str++);
    }
}

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    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);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void NVIC_Configuration(void)
{
    NVIC_InitTypeDef NVIC_InitStructure;

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

    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);

    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
}

void USART1_IRQHandler(void)
{
    if (USART_GetITStatus(USART1, USART_IT_RXNE) == SET)
    {
        USART_ClearITPendingBit(USART1, USART_IT_RXNE);
    }
}

这个程序使用了STM32F10x的USART1模块，将蓝牙模块与单片机连接。在main()函数中，我们使用USART_GetFlagStatus()函数检查USART1模块是否有数据发送过来，并使用USART_SendData()函数将数据发送到蓝牙模块。同时，我们也使用USART_GetFlagStatus()函数检查USART1模块是否可以发送数据，并使用USART_SendData()函数将数据发送到串口。这样，单片机就可以将数据实时传输给手机了。当然，具体的实现方式和细节会根据蓝牙模块的不同而有所不同。