STM32和ESP8266之间进行串口通信代码

以下是STM32和ESP8266之间进行串口通信的示例代码：

#include "stm32f10x.h"

USART_InitTypeDef USART_InitStructure;

void USART1_SendChar(char ch) {
    while (!(USART1->SR & USART_SR_TXE));
    USART1->DR = (ch & 0xFF);
}

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

void USART1_Configuration(void) {
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE);

    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);

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

    USART_InitStructure.USART_BaudRate = 115200;
    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) {
    USART1_Configuration();

    while (1) {
        USART1_SendString("AT+RST\r\n");
        delay_ms(1000);

        USART1_SendString("AT+CWMODE=3\r\n");
        delay_ms(1000);

        USART1_SendString("AT+CWJAP=\"SSID\",\"PASSWORD\"\r\n");
        delay_ms(1000);

        USART1_SendString("AT+CIPSTART=\"TCP\",\"192.168.1.100\",80\r\n");
        delay_ms(1000);

        USART1_SendString("AT+CIPSEND=5\r\n");
        delay_ms(1000);

        USART1_SendString("Hello");
        delay_ms(1000);

        USART1_SendString("AT+CIPCLOSE\r\n");
        delay_ms(1000);
    }
}

在此示例代码中，我们使用USART1配置了STM32的串口通信。我们将AT命令发送到ESP8266模块来连接Wi-Fi和建立TCP连接。然后，我们发送一个字符串“Hello”到服务器，并关闭TCP连接。您需要根据您的具体要求进行修改此代码。