HC-05模块的代码

以下是HC-05模块与STM32单片机进行蓝牙通信的示例代码（注意：该代码仅供参考，具体实现可能因硬件和软件环境不同而异）：

#include "stm32f10x.h"
#include "usart.h"

#define MESSAGE_SIZE 20

char message[MESSAGE_SIZE];

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    /* Enable USART1 and GPIOA clock */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);

    /* USART1 Tx PA.9 */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    /* USART1 Rx PA.10 */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void USART_Configuration(void)
{
    USART_InitTypeDef USART_InitStructure;

    /* USART1 configuration */
    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);

    /* Enable USART1 */
    USART_Cmd(USART1, ENABLE);
}

void USART_SendString(char* string)
{
    while (*string)
    {
        USART_SendData(USART1, (uint16_t) *string++);
        while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
    }
}

int main(void)
{
    /* Initialize GPIO and USART */
    GPIO_Configuration();
    USART_Configuration();

    while (1)
    {
        /* Wait for incoming message */
        while (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET);

        /* Read incoming message */
        USART_ReceiveData(USART1);

        /* Process message */
        if (message[0] == 'H' && message[1] == 'I')
        {
            USART_SendString("Hello World!");
        }
        else if (message[0] == 'T' && message[1] == 'E' && message[2] == 'M' && message[3] == 'P')
        {
            //TODO: Read temperature sensor and send value via HC-05 module
        }
        else
        {
            USART_SendString("Invalid command!");
        }
    }
}

在这个示例代码中，我们使用STM32F10x系列单片机的USART1模块与HC-05蓝牙模块进行通信。我们使用USART_SendString函数向HC-05模块发送字符串，并使用USART_GetFlagStatus和USART_ReceiveData函数从HC-05模块接收数据。在while(1)循环中，我们等待来自HC-05模块的消息，并根据接收到的消息执行相应的操作。

请注意，这只是一个示例代码，并且可能需要根据您的硬件和软件环境进行修改才能正常工作。