stm32通过esp32实现socket接口协议通信的代码

以下是一个基于STM32和ESP32的Socket通信代码示例，其中STM32通过ESP32实现Socket接口协议通信。

#include "stm32f1xx_hal.h"
#include "string.h"

UART_HandleTypeDef huart1;

void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);

void delay_ms(uint32_t ms)
{
  HAL_Delay(ms);
}

void uart_send(char *str)
{
  HAL_UART_Transmit(&huart1, (uint8_t*)str, strlen(str), 100);
}

void esp8266_init(void)
{
  uart_send("AT+RST\r\n");
  delay_ms(1000);
  uart_send("AT+CWMODE=1\r\n");
  delay_ms(1000);
  uart_send("AT+CWJAP=\"SSID\",\"PASSWORD\"\r\n");
  delay_ms(1000);
}

int esp8266_connect(char *ip, int port)
{
  char buf[64];
  uart_send("AT+CIPSTART=\"TCP\",\"");
  uart_send(ip);
  uart_send("\",");
  sprintf(buf, "%d", port);
  uart_send(buf);
  uart_send("\r\n");
  if(strstr(buf, "OK"))
    return 1;
  else
    return 0;
}

void esp8266_send(char *data)
{
  char buf[64];
  int len = strlen(data);
  sprintf(buf, "AT+CIPSEND=%d\r\n", len);
  uart_send(buf);
  delay_ms(100);
  uart_send(data);
}

int main(void)
{
  HAL_Init();
  SystemClock_Config();
  MX_GPIO_Init();
  MX_USART1_UART_Init();

  esp8266_init();
  esp8266_connect("192.168.1.100", 8080);
  esp8266_send("hello world!");

  while (1)
  {
  }
}

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

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  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)
  {
    Error_Handler();
  }
}

static void MX_USART1_UART_Init(void)
{
  huart1.Instance = USART1;
  huart1.Init.BaudRate = 115200;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }
}

static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct;

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_RESET);

  /*Configure GPIO pin : PA0 */
  GPIO_InitStruct.Pin = GPIO_PIN_0;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}

void Error_Handler(void)
{
  /* User can add his own implementation to report the HAL error return state */
  while(1)
  {
  }
}

在这个示例代码中，我们使用了ESP8266作为WiFi模块，并通过ESP8266实现了基于TCP/IP的Socket通信。本示例代码中，我们通过调用esp8266_init()函数对ESP8266进行初始化，然后通过调用esp8266_connect()函数进行连接，并通过esp8266_send()函数发送数据。

需要注意的是，本示例代码中使用了STM32F1系列的开发板和ESP8266模块，如果您使用的是其他型号的开发板和模块，可能需要进行一些适当的修改。