文章目录
0 前言1 简介2 主要器件3 实现效果4 设计原理5 部分核心代码6 最后0 前言
🔥 这两年开始毕业设计和毕业答辩的要求和难度不断提升，传统的毕设题目缺少创新和亮点，往往达不到毕业答辩的要求，这两年不断有学弟学妹告诉学长自己做的项目系统达不到老师的要求。
为了大家能够顺利以及最少的精力通过毕设，学长分享优质毕业设计项目，今天要分享的是
🚩基于STM32的天气预报盒子
🥇学长这里给一个题目综合评分(每项满分5分)
难度系数：3分工作量：4分创新点：4分
1 简介
一个获取天气状态的小盒子。
2 主要器件
STM32F103RDT6ESP8266模块MICRO USB模块1.8寸彩屏模块3 实现效果
功能介绍
可以获取当前实时气温和3天内天气预报。板载气压传感器和温湿度传感器监测环境状态。使用了ESP8266模块，支持长按一键配网，使用安信可科技配网工具。监测电池电压，可以给电池充电。MICRO USB引出可以给电池充电，支持STM32串口ISP下载与调试输出，串口芯片连接异常增加了电源输出滤波电容，PCB已更新。接插1.8寸彩屏模块（st7735驱动）。
4 设计原理
硬件原理图
STM32F103RDT6
主体代码
ESP8266模块
ESP8266是一款适用于物联网和家庭自动化项目的 Wi-Fi 模块。
ESP8266系列一般具有两种开发方式：AT指令开发和SDK开发。
AT指令：厂家出厂时预先在ESP8266芯片烧入好固件，封装好WiFi的协议栈，内部已经实现透传，而用户只需要使用一个USB转TTL的模块或者单片机的串口就能实现与WiFi模块的通信，发送AT指令来对WiFi模块进行控制。（和蓝牙透传模块类似）
SDK开发：由于ESP8266本身即是可编程的芯片，可以把它视为一个带有无线通信的单片机，而用户需要在专门的IDE中编写对应的程序，然后通过烧写固件的方式将程序写入到芯片中，因此，想要实现WiFi通信，需要自定义WiFi协议栈，对用户掌握的相关知识要求更高。
部分代码
/*-------------------------------------------------功能：ESP8266发送数据形参：id-连接序号（0-7）,databuff-发送数据,data_len-数据长度返回值：0：无错误 1：等待">"超时2:未连接3：发送完成超时-------------------------------------------------*/u8 ESP8266_SendData(u8 id, char *databuff, u32 data_len){u32 i;u8 timeout=50;Clear_Buffer();USART2_printf("AT+CIPSEND=%d,%d\r\n",id,data_len);while(timeout--){Delay_10ms();if(strstr((const char*)USART2_ReceiveData,(const char*)">")) //如果接收到>表示成功break; //主动跳出while循环}if(timeout==0)return 1;else{timeout=50;//Clear_Buffer(); for(i=0;i<data_len;i++)USART2_printf(databuff); //发送数据while(timeout--){Delay_10ms();if(strstr((const char*)USART2_ReceiveData,(const char*)"SEND OK"))return 0;if(strstr((const char*)USART2_ReceiveData,(const char*)"link is not valid"))return 0;}return 3;}}
5 部分核心代码
void WIFI_Send_Cmd_And_Wait_OK(uint8_t *cmd){Weather_Buffer_Clear();UART_Send_Data(&huart3,cmd,strlen((char*)cmd));while(1){if(UART3_REC_State == Uart_Status_Ready){Weather_Data_Handler(Uart3_Rec_Buffer,UART3_Rec_Cnt);if(strstr((char*)Uart3_Rec_Buffer,"OK") != NULL){Weather_Buffer_Clear();break;}Weather_Buffer_Clear();}osDelay(10);}}void Check_Smart_Config(){if(ESP_Smart_Config_Flag == 1){printf("智能配网模式\r\n");ESP_Smart_Config_Flag = 0;osDelay(200*2);WIFI_Send_Cmd_And_Wait_OK(Config_Cmd[0]);WIFI_Send_Cmd_And_Wait_OK(Config_Cmd[1]);ESP_Smart_Config_Dis = 1;}}void WIFI_Mode_Init(){LCD_Data.Connect = 0;HAL_GPIO_WritePin(ESP_RST_GPIO_Port, ESP_RST_Pin, GPIO_PIN_SET);while(1){Check_Smart_Config();if(UART3_REC_State == Uart_Status_Ready){Weather_Data_Handler(Uart3_Rec_Buffer,UART3_Rec_Cnt);if(strstr((char*)Uart3_Rec_Buffer,"WIFI GOT IP") != NULL){LCD_Data.Connect = 1;printf("WIFI已连接\r\n");Weather_Buffer_Clear();break;}else if(strstr((char*)Uart3_Rec_Buffer,"WIFI DISCONNECT") != NULL || strstr((char*)Uart3_Rec_Buffer,"FAIL") != NULL){WIFI_Send_Cmd_And_Wait_OK(WEATHER_Cmd[1]);//重新配置模式}Weather_Buffer_Clear();}osDelay(10);}}void Analysis_Current_Weather(uint8_t * data,uint32_t len){/*{"results":[{"location":{"id":"WTSQQYHVQ973","name":"Nanjing","country":"CN","path":"Nanjing,Nanjing,Jiangsu,China","timezone":"Asia/Shanghai","timezone_offset":"+08:00"},"now":{"text":"Cloudy","code":"4","temperature":"37"},"last_update":"-07-13T16:00:13+08:00"}]}*/char *str = NULL;str = strstr((char*)data,"name");sscanf(str+7,"%[^\"]",LCD_Data.Location);str = strstr((char*)data,"last_update");sscanf(str+14,"%[^T]",LCD_Data.Date);str = strstr((char*)data,"code");sscanf(str+7,"%u",&LCD_Data.Weather_C);str = strstr((char*)data,"temperature");sscanf(str+14,"%u",&LCD_Data.Temp_C);}void Analysis_Weather_Report(uint8_t * data,uint32_t len){/*{"results":[{"location":{"id":"WTSQQYHVQ973","name":"Nanjing","country":"CN","path":"Nanjing,Nanjing,Jiangsu,China","timezone":"Asia/Shanghai","timezone_offset":"+08:00"},"daily":[{"date":"-07-13","text_day":"Cloudy","code_day":"4","text_night":"Cloudy","code_night":"4","high":"39","low":"29","rainfall":"0.00","precip":"0.00","wind_direction":"W","wind_direction_degree":"270","wind_speed":"32.8","wind_scale":"5","humidity":"66"},{"date":"-07-14","text_day":"Cloudy","code_day":"4","text_night":"Cloudy","code_night":"4","high":"39","low":"30","rainfall":"0.00","precip":"0.00","wind_direction":"W","wind_direction_degree":"270","wind_speed":"23.4","wind_scale":"4","humidity":"67"},{"date":"-07-15","text_day":"Cloudy","code_day":"4","text_night":"Cloudy","code_night":"4","high":"37","low":"28","rainfall":"0.00","precip":"0.00","wind_direction":"NW","wind_direction_degree":"315","wind_speed":"15.3","wind_scale":"3","humidity":"71"}],"last_update":"-07-13T08:00:00+08:00"}]}*/char *s = NULL;char *str[3] = {NULL,NULL,NULL};uint32_t te = 0;str[0] = strstr((char*)data,"date");str[1] = strstr(str[0]+10,"date");str[2] = strstr(str[1]+10,"date");for(uint8_t i=0;i<3;i++){s = strstr((char*)str[i],"date");sscanf(s+7,"%[^\"]",Weather_Data[i].Date);}for(uint8_t i=0;i<3;i++){s = strstr((char*)str[i],"code_day");sscanf(s+11,"%u",&Weather_Data[i].Weather);}for(uint8_t i=0;i<3;i++){s = strstr((char*)str[i],"high");sscanf(s+7,"%u",&Weather_Data[i].Temp_H);}for(uint8_t i=0;i<3;i++){s = strstr((char*)str[i],"low");sscanf(s+6,"%u",&Weather_Data[i].Temp_L);}for(uint8_t i=0;i<3;i++){s = strstr((char*)str[i],"humidity");sscanf(s+11,"%u",&Weather_Data[i].Humi);}for(uint8_t i=0;i<3;i++){s = strstr((char*)str[i],"wind_scale");sscanf(s+13,"%u",&Weather_Data[i].Wind);}}void Weather_Run(){WIFI_Send_Cmd_And_Wait_OK(WEATHER_Cmd[3]);//连接心知天气WIFI_Send_Cmd_And_Wait_OK(WEATHER_Cmd[4]);//设置透传模式WIFI_Send_Cmd_And_Wait_OK(WEATHER_Cmd[5]);//进入透传模式UART_Send_Data(&huart3,Querry_Current_Weather,strlen((char*)Querry_Current_Weather));while(1){if(UART3_REC_State == Uart_Status_Ready){Weather_Data_Handler(Uart3_Rec_Buffer,UART3_Rec_Cnt);Analysis_Current_Weather(Uart3_Rec_Buffer,UART3_Rec_Cnt);Weather_Buffer_Clear();break;}osDelay(10);}osDelay(200);UART_Send_Data(&huart3,Querry_Weather_Report,strlen((char*)Querry_Weather_Report));while(1){if(UART3_REC_State == Uart_Status_Ready){Weather_Data_Handler(Uart3_Rec_Buffer,UART3_Rec_Cnt);Analysis_Weather_Report(Uart3_Rec_Buffer,UART3_Rec_Cnt);Weather_Buffer_Clear();break;}osDelay(10);}HAL_GPIO_WritePin(ESP_RST_GPIO_Port, ESP_RST_Pin, GPIO_PIN_RESET);//关闭WIFI}
