系统功能:

此设计采用STM32单片机将采集到的环境温度,TDS值,PH值等显示在OLED上，并将这些信息上报至阿里云平台。系统可通过阿里云平台或按键开关加热继电器,增氧继电器,水泵继电器和舵机.

主要功能模块原理图:

电源时钟烧录接口:

单片机和按键输入电路:

继电器控制电路:

资料获取地址

系统主要功能模块代码

初始化代码:

  /* 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 */

    InitVar();


  /* 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_USART1_UART_Init();

  MX_USART2_UART_Init();

  MX_ADC1_Init();

  MX_TIM1_Init();

  /* USER CODE BEGIN 2 */

//uart2打开接收中断

    HAL_UART_Receive_IT(&huart2, (uint8_t*)&uart2RecBuff, 1);

    HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1);

    InitOled();

    InitOledDisp();

//初始化ESP8266

    ESP8266_Init(); 

    HAL_Delay(100);

    OledFill(0x00);     //全屏熄灭   

    OledDispPage1();

    if(InitDS18B20()==0)

    {

//        printf("%s", "DS18B20初始化成功");

//DS18B20在上电第一次读取时显示温度为85℃，这是正常的。

//85℃是DS18B20在上电复位后在温度寄存器内的对应数字量，

//这里DS18B20初始化成功后读一次值，避免出现85℃

        DS18B20GetTemp_SkipRom();

}

ESP8266接入阿里云代码:

//硬件复位ESP8266

    HAL_GPIO_WritePin(ESP8266RST_GPIO_Port, ESP8266RST_Pin, GPIO_PIN_RESET);

         HAL_Delay(250);

    HAL_GPIO_WritePin(ESP8266RST_GPIO_Port, ESP8266RST_Pin, GPIO_PIN_SET);

         HAL_Delay(500);

//关闭板载LED

    HAL_GPIO_WritePin(OnBoardLED_GPIO_Port, OnBoardLED_Pin, GPIO_PIN_SET);

         ESP8266_Clear();

//测试AT指令

         printf("AT Testing\r\n");

         while(ESP8266_SendCmd("AT\r\n", "OK", 200))

         {

                  HAL_Delay(1000);

         }

         HAL_GPIO_TogglePin(OnBoardLED_GPIO_Port, OnBoardLED_Pin); 

         HAL_Delay(500);

//设置为Station   

         printf("set CWMODE\r\n");

         while(ESP8266_SendCmd("AT+CWMODE=1\r\n", "OK", 200))

         {

                  HAL_Delay(1000);

         }

         HAL_GPIO_TogglePin(OnBoardLED_GPIO_Port, OnBoardLED_Pin); 

         HAL_Delay(500);

//上电不自动连接AP

         printf("set CWAUTOCONN\r\n");

         while(ESP8266_SendCmd("AT+CWAUTOCONN=0\r\n", "OK", 200))

         {

                  HAL_Delay(1000);

         }

         HAL_GPIO_TogglePin(OnBoardLED_GPIO_Port, OnBoardLED_Pin); 

         HAL_Delay(500);

//关闭回显

    printf("set ATE0\r\n");

    while(ESP8266_SendCmd("ATE0\r\n", "OK", 200))

    {

        HAL_Delay(1000);

    }

    HAL_GPIO_TogglePin(OnBoardLED_GPIO_Port, OnBoardLED_Pin);  

    HAL_Delay(500);

//配置WIFI

         printf("set Wifi\r\n");

         while(ESP8266_SendCmd("AT+CWJAP=\""WIFI_SSID"\",\""WIFI_PASSWD"\"\r\n", "OK", 500))

         {

                  HAL_Delay(1000);

    }      

         HAL_GPIO_TogglePin(OnBoardLED_GPIO_Port, OnBoardLED_Pin);

         HAL_Delay(500);

//MQTT USER CONFIG

    printf("mqtt config\r\n");

    while(ESP8266_SendCmd("AT+MQTTUSERCFG=0,1,\""MQTT_CLIENT_ID"\",\""MQTT_USER_NAME"\",\""MQTT_PASSWD"\",0,0,\"\"\r\n", "OK", 500))

    {

        HAL_Delay(1000);

    }  

    HAL_GPIO_TogglePin(OnBoardLED_GPIO_Port, OnBoardLED_Pin);

    HAL_Delay(1000);

//MQTT连接服务器

    printf("mqtt broker\r\n");

    while(ESP8266_SendCmd("AT+MQTTCONN=0,\""BROKER_ASDDRESS"\",1883,0\r\n", "OK", 500))

    {

        HAL_Delay(1000);

    }  

    HAL_GPIO_TogglePin(OnBoardLED_GPIO_Port, OnBoardLED_Pin);

HAL_Delay(500);

系统控制代码:
 

//系统信息更新

void SystemControl(void)

{

    static uint8_t updateCnt = 0;

   

    updateCnt++;   

    if(updateCnt>=SYSTEM_UPDATE_INTER)

    {

        updateCnt = 0;

        Aliyun_SendData();

    }

//读取传感器值

    ReadSensorVal();

//更新DS18B20温度值

    UpdateTempData();

//喂食控制

    FeedControl();

}

此设计提供的资料包含原理图PCB（包含PDF，AD，立创EDA三个版本），源代码，系统框图，主程序流程图，物料清单（包含使用到的器件手册），功能操作说明等。