STM32 WiFi 模块 ESP8266程序代码

以下是使用STM32微控制器和ESP8266 WiFi模块进行通信的示例代码：

#include "stm32f4xx.h"
#include "stm32f4xx_hal.h"
#include <string.h>

UART_HandleTypeDef huart2;

void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART2_UART_Init(void);

void ESP8266_SendCommand(const char* command)
{
    HAL_UART_Transmit(&huart2, (uint8_t*)command, strlen(command), HAL_MAX_DELAY);
}

void ESP8266_Init()
{
    ESP8266_SendCommand("AT+RST\r\n"); // 重启ESP8266模块
    HAL_Delay(2000);
    ESP8266_SendCommand("AT+CWMODE=1\r\n"); // 设置为Station模式
    HAL_Delay(1000);
    ESP8266_SendCommand("AT+CWJAP=\"your_wifi_ssid\",\"your_wifi_password\"\r\n"); // 连接WiFi
    HAL_Delay(5000);
    ESP8266_SendCommand("AT+CIPMUX=0\r\n"); // 设置为单连接模式
    HAL_Delay(1000);
}

void ESP8266_SendData(const char* data)
{
    char buffer[100];
    sprintf(buffer, "AT+CIPSTART=\"TCP\",\"your_server_ip\",your_server_port\r\n");
    ESP8266_SendCommand(buffer);
    HAL_Delay(2000);
    
    sprintf(buffer, "AT+CIPSEND=%d\r\n", strlen(data));
    ESP8266_SendCommand(buffer);
    HAL_Delay(1000);
    
    ESP8266_SendCommand(data);
    HAL_Delay(1000);
    
    ESP8266_SendCommand("AT+CIPCLOSE\r\n");
    HAL_Delay(1000);
}

int main(void)
{
    HAL_Init();
    SystemClock_Config();
    MX_GPIO_Init();
    MX_USART2_UART_Init();

    ESP8266_Init();
    
    while (1)
    {
        ESP8266_SendData("Hello, server!");
        HAL_Delay(5000);
    }
}

void SystemClock_Config(void)
{
    RCC_OscInitTypeDef RCC_OscInitStruct;
    RCC_ClkInitTypeDef RCC_ClkInitStruct;

    __HAL_RCC_PWR_CLK_ENABLE();
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.HSICalibrationValue = 16;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
    RCC_OscInitStruct.PLL.PLLM = 16;
    RCC_OscInitStruct.PLL.PLLN = 336;
    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
    RCC_OscInitStruct.PLL.PLLQ = 7;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
        while(1);
    }

    if (HAL_PWREx_EnableOverDrive() != HAL_OK)
    {
        while(1);
    }

    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                                |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
    {
        while(1);
    }
    
    HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
    HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
    HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}

static void MX_USART2_UART_Init(void)
{
    huart2.Instance = USART2;
    huart2.Init.BaudRate = 115200;
    huart2.Init.WordLength = UART_WORDLENGTH_8B;
    huart2.Init.StopBits = UART_STOPBITS_1;
    huart2.Init.Parity = UART_PARITY_NONE;
    huart2.Init.Mode = UART_MODE_TX_RX;
    huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
    huart2.Init.OverSampling = UART_OVERSAMPLING_16;
    if (HAL_UART_Init(&huart2) != HAL_OK)
    {
        while(1);
    }
}

static void MX_GPIO_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStruct;

    __HAL_RCC_GPIOA_CLK_ENABLE();

    GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_PULLUP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF7_USART2;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}

请确保替换示例代码中的以下信息：
- "your_wifi_ssid"：您的WiFi SSID（名称）
- "your_wifi_password"：您的WiFi密码
- "your_server_ip"：您的服务器IP地址
- your_server_port：您的服务器端口号

这仅是一个基本示例，您可能需要根据您的特定应用程序进行进一步的自定义和调整。