STM32+ESP8266连接阿里云物联网平台

一、硬件准备

我本次使用的是stm32f103c8t6，esp8266，DHT11温湿度传感器模块，还需要在 阿里云上注册账号。接线看我上一个文章。

二、阿里云物联网

上面这些就是创建阿里云物联网平台，接下来就是写代码

三、代码部分

main.c

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "dma.h"
#include "spi.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"
#include "stdio.h"
#include "string.h"
#include "dht11.h"
#include "oled.h"
#include "cJSON.h"
#include "time_data.h"
 
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
 
/* USER CODE END Includes */
 
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
 
/* USER CODE END PTD */
 
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
 
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
 
/* USER CODE END PM */
 
/* Private variables ---------------------------------------------------------*/
 
/* USER CODE BEGIN PV */
 
/* USER CODE END PV */
 
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
int WD;
int SD;
uint8_t WIFI_Connect[64];
uint8_t FWQ_Connect[64];
uint8_t MQTT_Connect[400];
uint8_t MQTT_ClientId[252];
uint8_t MQTT_CONN[252];
uint8_t MQTT_DL[252];
uint8_t MQTT_WD[128];
uint8_t MQTT_SD[128];
/* USER CODE BEGIN PFP */
 
/* USER CODE END PFP */
 
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
 
/* USER CODE END 0 */
 
/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */
 
  /* USER CODE END 1 */
 
  /* MCU Configuration--------------------------------------------------------*/
 
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();
 
  /* USER CODE BEGIN Init */
 
  /* USER CODE END Init */
 
  /* Configure the system clock */
  SystemClock_Config();
 
  /* USER CODE BEGIN SysInit */
 
  /* USER CODE END SysInit */
 
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_SPI1_Init();
  MX_USART1_UART_Init();
  MX_USART3_UART_Init();
  MX_TIM2_Init();
  /* USER CODE BEGIN 2 */
	DHT11_Init(); //DHT11初始化
	printf("%s\r\n","text");
	
	HAL_UART_Transmit(&huart1,(uint8_t*)AT,strlen(AT),HAL_MAX_DELAY);  //发送AT测试
	HAL_Delay(200);
	
	HAL_UART_Transmit(&huart1,(uint8_t*)WiFi_Mode,strlen(WiFi_Mode),HAL_MAX_DELAY);  //配置STA模式
	HAL_Delay(200);
	
	sprintf(WIFI_Connect,"AT+CWJAP=\"%s\",\"%s\"\r\n",ssid,pass);  //连接wifi
	HAL_UART_Transmit(&huart1,(uint8_t*)WIFI_Connect,strlen(WIFI_Connect),HAL_MAX_DELAY);
	HAL_Delay(1500);
	
	sprintf(FWQ_Connect,"AT+CIPSNTPCFG=\%d,\%d,\"%s\"\r\n",1,8,"ntp1.aliyun.com"); 
	HAL_UART_Transmit(&huart1,(uint8_t*)FWQ_Connect,strlen(FWQ_Connect),HAL_MAX_DELAY); //查询/设置时区和SNTP服务器
	HAL_Delay(300);
	
	sprintf(MQTT_Connect,"AT+MQTTUSERCFG=\%d,\%d,\"%s\",\"%s\",\"%s\",\%d,\%d,\"%s\"\r\n",0,1,"NULL","物联网平台MQTT参数中的username","物联网平台MQTT参数中的passwd",0,0,"");
	HAL_UART_Transmit(&huart1,(uint8_t*)MQTT_Connect,strlen(MQTT_Connect),HAL_MAX_DELAY);  //设置MQTT用户的属性 AT+MQTTUSERCFG=<LinkID>,<scheme>,<"client_id">,<"username">,<"password">,<cert_key_ID>,<CA_ID>,<"path">
	HAL_Delay(300);
	
	sprintf(MQTT_ClientId,"AT+MQTTCLIENTID=\%d,\"%s\"\r\n",0,charID);  //k11dqdmRz06.DHT11|securemode=2\,signmethod=hmacsha256\,timestamp=1712478216024|
	HAL_UART_Transmit(&huart1,(uint8_t*)MQTT_ClientId,strlen(MQTT_ClientId),HAL_MAX_DELAY); 
	HAL_Delay(300);
	
	sprintf(MQTT_CONN,"AT+MQTTCONN=\%d,\"%s\",\%d,\%d\r\n",0,"iot-06z00dg5d86ynoc.mqtt.iothub.aliyuncs.com",1883,1); 
	HAL_UART_Transmit(&huart1,(uint8_t*)MQTT_CONN,strlen(MQTT_CONN),HAL_MAX_DELAY); 
	HAL_Delay(1000);
	
	sprintf(MQTT_DL,"AT+MQTTSUB=\%d,\"%s\",\%d\r\n",0,"/k11dqdmRz06/DHT11/user/get",1);  //顶阅阿里云物联网的DHT11
	HAL_UART_Transmit(&huart1,(uint8_t*)MQTT_DL,strlen(MQTT_DL),HAL_MAX_DELAY); 
	HAL_Delay(1000);
	
	
	
	//HAL_UART_Transmit(&huart1,(uint8_t*)mqtt_tc,strlen(mqtt_tc),HAL_MAX_DELAY);  //退出
	//HAL_Delay(200);
  /* USER CODE END 2 */
 
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
		
		
		uint8_t res=DHT11_Read_Data(&temperature,&humidity); 
		if(res==0){
			DHT11_Read_Data(&temperature,&humidity);
			WD=temperature>>8;
			SD=humidity>>8;
			//OLED_ShowNum(30,24,16,WD,2);
			//OLED_ShowNum(30,44,16,SD,2);
		  //OLED_Refresh();
			printf("DHT11 temperature=%d.%d \r\n",temperature>>8,temperature&0xff);
			printf("DHT11 humidity=%d.%d%%\r\n",humidity>>8,humidity&0xff);
			
			sprintf(MQTT_WD,"AT+MQTTPUB=\%d,\"%s\",\"{\\\"params\\\":{\\\"Humi\\\":\%d}}\",\%d,\%d\r\n",0,"/sys/k11dqdmRz06/DHT11/thing/event/property/post",SD,0,0); 
			HAL_UART_Transmit(&huart1,(uint8_t*)MQTT_WD,strlen(MQTT_WD),HAL_MAX_DELAY); 
			HAL_Delay(300);
	
			sprintf(MQTT_SD,"AT+MQTTPUB=\%d,\"%s\",\"{\\\"params\\\":{\\\"temp\\\":\%d}}\",\%d,\%d\r\n",0,"/sys/k11dqdmRz06/DHT11/thing/event/property/post",WD,0,0); 
			HAL_UART_Transmit(&huart1,(uint8_t*)MQTT_SD,strlen(MQTT_SD),HAL_MAX_DELAY); 
			HAL_Delay(300);
			
			HAL_GPIO_WritePin(LED_GPIO_Port,LED_Pin,GPIO_PIN_SET);
			HAL_Delay(5000);  
		}
		
		
    /* USER CODE END WHILE */
 
    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}
 
/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
 
  /** 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.HSIState = RCC_HSI_ON;
  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();
  }
}
 
/* USER CODE BEGIN 4 */
 
/* USER CODE END 4 */
 
/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN  Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}
 
#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

main.h

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.h
  * @brief          : Header for main.c file.
  *                   This file contains the common defines of the application.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
 
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __MAIN_H
#define __MAIN_H
#define AT "AT\r\n"
#define WiFi_Mode "AT+CWMODE=1\r\n"
#define ssid "homi"
#define pass "xhp5544671"
#define charID "k11dqdmRz06.DHT11|securemode=2\\,signmethod=hmacsha256\\,timestamp=1712478216024|"
#define mqtt_tc "AT+MQTTCLEAN=0\r\n"
#ifdef __cplusplus
extern "C" {
#endif
 
/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"
 
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
 
/* USER CODE END Includes */
 
/* Exported types ------------------------------------------------------------*/
/* USER CODE BEGIN ET */
 
/* USER CODE END ET */
 
/* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN EC */
 
/* USER CODE END EC */
 
/* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN EM */
 
/* USER CODE END EM */
 
/* Exported functions prototypes ---------------------------------------------*/
void Error_Handler(void);
 
/* USER CODE BEGIN EFP */
 
/* USER CODE END EFP */
 
/* Private defines -----------------------------------------------------------*/
#define LED_Pin GPIO_PIN_2
#define LED_GPIO_Port GPIOA
#define DHT11_DATA_Pin GPIO_PIN_3
#define DHT11_DATA_GPIO_Port GPIOA
#define OLED_CS_Pin GPIO_PIN_4
#define OLED_CS_GPIO_Port GPIOA
#define OLED_RES_Pin GPIO_PIN_0
#define OLED_RES_GPIO_Port GPIOB
#define OLED_DC_Pin GPIO_PIN_1
#define OLED_DC_GPIO_Port GPIOB
/* USER CODE BEGIN Private defines */
 
/* USER CODE END Private defines */
 
#ifdef __cplusplus
}
#endif
 
#endif /* __MAIN_H */

实验结果