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ESP8266ESP8266_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ESP8266HAL_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LEDHAL_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APprintf("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WIFIprintf("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 CONFIGprintf("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。
