stm32f108c8t6与hc-05连接代码

以下是使用STM32F108C8T6与HC-05进行连接的代码示例：

#include "stm32f10x.h"
#include "stm32f10x_usart.h"
#include "stm32f10x_gpio.h"

USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;

void USART1_Init(void)
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE);

    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_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    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);
}

int main(void)
{
    char c;

    USART1_Init();

    while (1)
    {
        while (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET);

        c = USART_ReceiveData(USART1);

        USART_SendData(USART1, c);
        while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
    }
}

上述代码使用USART1初始化了STM32F108C8T6的串口，并在主循环中通过串口与HC-05进行通信。

需要注意的是，HC-05默认波特率为9600，因此在初始化串口时也需要将波特率设置为9600。此外，还需要通过GPIO初始化STM32F108C8T6的串口引脚，使其与HC-05进行连接。