ESP8266 开发板网络时钟和天气 OLED 显示
网络时钟 OELD 显示
代码
#include <Arduino.h>
#include <U8g2lib.h>
#include <time.h>
#include <SPI.h>
#include <Wire.h>
#include <NTPClient.h>
// change next line to use with another board/shield
#include <ESP8266WiFi.h>
//#include <WiFi.h> // for WiFi shield
//#include <WiFi101.h> // for WiFi 101 shield or MKR1000
#include <WiFiUdp.h>#define SDA 2 //ESP8266 D1 PIN 05
#define SCL 14 //ESP8266 D2 PIN 04const char *ssid = "xxx";// wifi account
const char *password = "xxx";// wifi password
char *week = "";//SSD1306,128x64,全屏缓冲模式,模拟I2C,I2C,u8g2(旋转0度,时钟,数据,重置)
U8G2_SSD1306_128X64_NONAME_1_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "ntp1.aliyun.com",60*60*8, 30*60*1000);//设置访问的ntp服务器void setup(){Wire.begin(/*SDA*/2,/*SCL*/14);//自定义IIC通信引脚Serial.begin(115200);WiFi.begin(ssid, password);while ( WiFi.status() != WL_CONNECTED ) {delay ( 500 );Serial.print ( "." );}timeClient.begin();u8g2.begin();u8g2.enableUTF8Print();
}void loop() {timeClient.update();u8g2.setFont(u8g2_font_unifont_t_chinese2);u8g2.firstPage();do {u8g2.setCursor(0, 15);u8g2.print("北京时间:=");u8g2.setCursor(0, 35);u8g2.print(timeClient.getFormattedTime());u8g2.setCursor(75, 35);switch(timeClient.getDay()){case 0:week = "Sun.";break;case 1:week = "Mon.";break;case 2:week = "Tues.";break;case 3:week = "Wed.";break;case 4:week = "Thur.";break;case 5:week = "Fri.";break;case 6:week = "Sat.";break;}u8g2.print(week);u8g2.setCursor(0, 55);time_t t;struct tm *p;t=timeClient.getEpochTime();p=gmtime(&t);char s[100];//strftime(s, sizeof(s), "%Y-%m-%d %H:%M:%S", p);strftime(s, sizeof(s), "%Y年%m月%d日", p);u8g2.print(s);} while ( u8g2.nextPage() );Serial.println(timeClient.getEpochTime());delay(1000);
}
效果
天气 OLED 显示
代码
#include <ArduinoJson.h>
#include <ESP8266WiFi.h>
#include <SPI.h>
#include <U8g2lib.h>
#include <WiFiUdp.h>
#include <TimeLib.h>
#include <DNSServer.h>
#include <ESP8266WebServer.h>#define SDA 02 // SDA引脚，gpio2(D4)
#define SCL 14 // SCL引脚，gpio14(D5)WiFiUDP Udp;
unsigned int localPort = 8888; // 用于侦听UDP数据包的本地端口//网络校时的相关配置
static const char ntpServerName[] = "ntp1.aliyun.com"; //NTP服务器，使用阿里云
int timeZone = 8; //时区设置，采用东8区//保存断网前的最新数据
int results_0_now_temperature_int_old;
String results_0_now_text_str_old;
int results_0_daily_1_high_int_old;
int results_0_daily_1_low_int_old;
String results_0_daily_1_text_day_str_old;//函数声明
time_t getNtpTime();
void sendNTPpacket(IPAddress &address);
void oledClockDisplay();
void sendCommand(int command, int value);
void initdisplay();
void connectWiFi();
void parseInfo_now(WiFiClient client,int i);
void parseInfo_fut(WiFiClient client,int i);
//
boolean isNTPConnected = false;const unsigned char xing[] U8X8_PROGMEM = {0x00, 0x00, 0xF8, 0x0F, 0x08, 0x08, 0xF8, 0x0F, 0x08, 0x08, 0xF8, 0x0F, 0x80, 0x00, 0x88, 0x00,0xF8, 0x1F, 0x84, 0x00, 0x82, 0x00, 0xF8, 0x0F, 0x80, 0x00, 0x80, 0x00, 0xFE, 0x3F, 0x00, 0x00}; /*星*/
const unsigned char liu[] U8X8_PROGMEM = {0x40, 0x00, 0x80, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0xFF, 0x7F, 0x00, 0x00, 0x00, 0x00,0x20, 0x02, 0x20, 0x04, 0x10, 0x08, 0x10, 0x10, 0x08, 0x10, 0x04, 0x20, 0x02, 0x20, 0x00, 0x00}; /*六*/typedef struct
{ //存储配置结构体int tz; //时间戳
} config_type;
config_type config;WiFiClient clientNULL;
DNSServer dnsServer;
ESP8266WebServer server(80);//----------WIFI连接配置----------
const char* ssid = "XXX"; // 连接WiFi名（此处使用XXX为示例）
const char* password = "XXX"; // 连接WiFi密码（此处使用XXX为示例）// 请将您需要连接的WiFi密码填入引号中
//----------天气API配置----------
const char* host = "api.seniverse.com"; // 将要连接的服务器地址
const int httpPort = 80; // 将要连接的服务器端口 // 心知天气HTTP请求所需信息
String reqUserKey = "SCV2tYYFdKCPrcrPv"; // 私钥
String reqLocation = "Shanghai"; // 城市
String reqUnit = "c"; // 摄氏/华氏//----------设置屏幕----------
U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/U8X8_PIN_NONE);
int sta = 0;
//----------初始化OLED----------
void initdisplay()
{u8g2.begin();u8g2.enableUTF8Print();
}
//----------用于获取实时天气的函数(0)----------
void TandW(){String reqRes = "/v3/weather/now.json?key=" + reqUserKey ++ "&location=" + reqLocation + "&language=en&unit=" +reqUnit;// 向心知天气服务器服务器请求信息并对信息进行解析httpRequest(reqRes,0);//延迟，需要低于20次/分钟delay(5000);
}
void display_1(int results_0_now_temperature_int,String results_0_now_text_str);//声明函数，用于显示温度、天气//----------获取3天预报(1)----------
void threeday(){// 建立心知天气API当前天气请求资源地址String reqRes = "/v3/weather/daily.json?key=" + reqUserKey ++ "&location=" + reqLocation + "&language=en&unit=" +reqUnit + "&start=0&days=3";// 向心知天气服务器服务器请求信息并对信息进行解析httpRequest(reqRes,1);delay(5000);
}void clock_display(time_t prevDisplay){server.handleClient();dnsServer.processNextRequest();if (timeStatus() != timeNotSet){if (now() != prevDisplay){ //时间改变时更新显示prevDisplay = now();oledClockDisplay();}}
}void setup(){Serial.begin(115200); Serial.println("");initdisplay();// 连接WiFiu8g2.clearBuffer();u8g2.setFont(u8g2_font_unifont_t_chinese2);u8g2.setCursor(0, 14);u8g2.print("Waiting for WiFi");u8g2.setCursor(0, 30);u8g2.print("connection...");u8g2.sendBuffer();connectWiFi();Udp.begin(localPort);setSyncProvider(getNtpTime);setSyncInterval(300); //每300秒同步一次时间
}time_t prevDisplay = 0; //当时钟已经显示void loop(){if (sta>=0 && sta<=250){clock_display(prevDisplay);}else if(sta == 251){TandW();}else{threeday();}++sta;if(sta==253){sta = 0;}
}// 向心知天气服务器服务器请求信息并对信息进行解析
void httpRequest(String reqRes,int stat){WiFiClient client;// 建立http请求信息String httpRequest = String("GET ") + reqRes + " HTTP/1.1\r\n" + "Host: " + host + "\r\n" + "Connection: close\r\n\r\n";Serial.println(""); Serial.print("Connecting to "); Serial.print(host);// 尝试连接服务器if (client.connect(host, 80)){Serial.println(" Success!");// 向服务器发送http请求信息client.print(httpRequest);Serial.println("Sending request: ");Serial.println(httpRequest); // 获取并显示服务器响应状态行 String status_response = client.readStringUntil('\n');Serial.print("status_response: ");Serial.println(status_response);// 使用find跳过HTTP响应头if (client.find("\r\n\r\n")) {Serial.println("Found Header End. Start Parsing.");}if (stat == 0){// 利用ArduinoJson库解析心知天气响应信息(实时数据)parseInfo_now(client,1); }else if(stat == 1){parseInfo_fut(client,1);}}else {Serial.println(" connection failed!");if (stat == 0){// 利用ArduinoJson库解析心知天气响应信息(实时数据)parseInfo_now(clientNULL,0); }else if(stat == 1){parseInfo_fut(clientNULL,0);}}//断开客户端与服务器连接工作client.stop();
}// 连接WiFi
void connectWiFi(){WiFi.begin(ssid, password); // 启动网络连接Serial.print("Connecting to "); // 串口监视器输出网络连接信息Serial.print(ssid); Serial.println(" ..."); // 告知用户NodeMCU正在尝试WiFi连接int i = 0; // 这一段程序语句用于检查WiFi是否连接成功while (WiFi.status() != WL_CONNECTED) { // WiFi.status()函数的返回值是由NodeMCU的WiFi连接状态所决定的。 delay(1000); // 如果WiFi连接成功则返回值为WL_CONNECTED Serial.print(i++); Serial.print(' '); // 此处通过While循环让NodeMCU每隔一秒钟检查一次WiFi.status()函数返回值} // 同时NodeMCU将通过串口监视器输出连接时长读秒。// 这个读秒是通过变量i每隔一秒自加1来实现的。 Serial.println(""); // WiFi连接成功后Serial.println("Connection established!"); // NodeMCU将通过串口监视器输出"连接成功"信息。Serial.print("IP address: "); // 同时还将输出NodeMCU的IP地址。这一功能是通过调用Serial.println(WiFi.localIP()); // WiFi.localIP()函数来实现的。该函数的返回值即NodeMCU的IP地址。
}// 利用ArduinoJson库解析心知天气响应信息(实时)
void parseInfo_now(WiFiClient client,int i){if(i==1){const size_t capacity = JSON_ARRAY_SIZE(1) + JSON_OBJECT_SIZE(1) + 2*JSON_OBJECT_SIZE(3) + JSON_OBJECT_SIZE(6) + 230;DynamicJsonDocument doc(capacity);deserializeJson(doc, client);JsonObject results_0 = doc["results"][0];JsonObject results_0_now = results_0["now"];const char* results_0_now_text = results_0_now["text"]; // "Sunny"const char* results_0_now_code = results_0_now["code"]; // "0"const char* results_0_now_temperature = results_0_now["temperature"]; // "32"const char* results_0_last_update = results_0["last_update"]; // "2020-06-02T14:40:00+08:00" // 通过串口监视器显示以上信息String results_0_now_text_str = results_0_now["text"].as<String>(); int results_0_now_code_int = results_0_now["code"].as<int>(); int results_0_now_temperature_int = results_0_now["temperature"].as<int>(); String results_0_last_update_str = results_0["last_update"].as<String>(); Serial.println(F("======Weahter Now======="));Serial.print(F("Weather Now: "));Serial.print(results_0_now_text_str);Serial.print(F(" "));Serial.println(results_0_now_code_int);Serial.print(F("Temperature: "));Serial.println(results_0_now_temperature_int);Serial.print(F("Last Update: "));Serial.println(results_0_last_update_str);Serial.println(F("========================"));display_0(results_0_now_temperature_int,results_0_now_text_str);results_0_now_text_str_old = results_0_now_text_str;results_0_now_temperature_int_old = results_0_now_temperature_int;}else{display_0(results_0_now_temperature_int_old,results_0_now_text_str_old);}}
//----------输出实时天气----------
void display_0(int results_0_now_temperature_int,String results_0_now_text_str){//显示输出u8g2.clearBuffer();u8g2.setFont(u8g2_font_wqy16_t_gb2312);u8g2.setCursor(15, 14);u8g2.print("上海实时天气");u8g2.setFont(u8g2_font_logisoso24_tr);u8g2.setCursor(45, 44);u8g2.print(results_0_now_temperature_int);u8g2.setCursor(15, 61);u8g2.setFont(u8g2_font_unifont_t_chinese2);u8g2.print(results_0_now_text_str);u8g2.sendBuffer();
}// 利用ArduinoJson库解析心知天气响应信息(预测)
void parseInfo_fut(WiFiClient client,int i){if(i==1){const size_t capacity = JSON_ARRAY_SIZE(1) + JSON_ARRAY_SIZE(3) + JSON_OBJECT_SIZE(1) + JSON_OBJECT_SIZE(3) + JSON_OBJECT_SIZE(6) + 3*JSON_OBJECT_SIZE(14) + 860;DynamicJsonDocument doc(capacity);deserializeJson(doc, client);JsonObject results_0 = doc["results"][0];JsonArray results_0_daily = results_0["daily"];JsonObject results_0_daily_0 = results_0_daily[0];const char* results_0_daily_0_date = results_0_daily_0["date"]; const char* results_0_daily_0_text_day = results_0_daily_0["text_day"]; const char* results_0_daily_0_code_day = results_0_daily_0["code_day"];const char* results_0_daily_0_text_night = results_0_daily_0["text_night"]; const char* results_0_daily_0_code_night = results_0_daily_0["code_night"]; const char* results_0_daily_0_high = results_0_daily_0["high"];const char* results_0_daily_0_low = results_0_daily_0["low"]; const char* results_0_daily_0_rainfall = results_0_daily_0["rainfall"];const char* results_0_daily_0_precip = results_0_daily_0["precip"]; const char* results_0_daily_0_wind_direction = results_0_daily_0["wind_direction"]; const char* results_0_daily_0_wind_direction_degree = results_0_daily_0["wind_direction_degree"];const char* results_0_daily_0_wind_speed = results_0_daily_0["wind_speed"];const char* results_0_daily_0_wind_scale = results_0_daily_0["wind_scale"];const char* results_0_daily_0_humidity = results_0_daily_0["humidity"];JsonObject results_0_daily_1 = results_0_daily[1];const char* results_0_daily_1_date = results_0_daily_1["date"];const char* results_0_daily_1_text_day = results_0_daily_1["text_day"];const char* results_0_daily_1_code_day = results_0_daily_1["code_day"];const char* results_0_daily_1_text_night = results_0_daily_1["text_night"]; const char* results_0_daily_1_code_night = results_0_daily_1["code_night"]; const char* results_0_daily_1_high = results_0_daily_1["high"];const char* results_0_daily_1_low = results_0_daily_1["low"]; const char* results_0_daily_1_rainfall = results_0_daily_1["rainfall"]; const char* results_0_daily_1_precip = results_0_daily_1["precip"]; const char* results_0_daily_1_wind_direction = results_0_daily_1["wind_direction"];const char* results_0_daily_1_wind_direction_degree = results_0_daily_1["wind_direction_degree"]; const char* results_0_daily_1_wind_speed = results_0_daily_1["wind_speed"];const char* results_0_daily_1_wind_scale = results_0_daily_1["wind_scale"];const char* results_0_daily_1_humidity = results_0_daily_1["humidity"]; JsonObject results_0_daily_2 = results_0_daily[2];const char* results_0_daily_2_date = results_0_daily_2["date"];const char* results_0_daily_2_text_day = results_0_daily_2["text_day"];const char* results_0_daily_2_code_day = results_0_daily_2["code_day"];const char* results_0_daily_2_text_night = results_0_daily_2["text_night"];const char* results_0_daily_2_code_night = results_0_daily_2["code_night"];const char* results_0_daily_2_high = results_0_daily_2["high"]; const char* results_0_daily_2_low = results_0_daily_2["low"]; const char* results_0_daily_2_rainfall = results_0_daily_2["rainfall"];const char* results_0_daily_2_precip = results_0_daily_2["precip"]; const char* results_0_daily_2_wind_direction = results_0_daily_2["wind_direction"]; const char* results_0_daily_2_wind_direction_degree = results_0_daily_2["wind_direction_degree"]; const char* results_0_daily_2_wind_speed = results_0_daily_2["wind_speed"];const char* results_0_daily_2_wind_scale = results_0_daily_2["wind_scale"]; const char* results_0_daily_2_humidity = results_0_daily_2["humidity"]; const char* results_0_last_update = results_0["last_update"]; // 从以上信息中摘选几个通过串口监视器显示String results_0_daily_0_date_str = results_0_daily_0["date"].as<String>();String results_0_daily_0_text_day_str = results_0_daily_0["text_day"].as<String>(); int results_0_daily_0_code_day_int = results_0_daily_0["code_day"].as<int>(); String results_0_daily_0_text_night_str = results_0_daily_0["text_night"].as<String>(); int results_0_daily_0_code_night_int = results_0_daily_0["code_night"].as<int>(); int results_0_daily_0_high_int = results_0_daily_0["high"].as<int>();int results_0_daily_0_low_int = results_0_daily_0["low"].as<int>();String results_0_last_update_str = results_0["last_update"].as<String>();int results_0_daily_1_high_int = results_0_daily_1["high"].as<int>();int results_0_daily_1_low_int = results_0_daily_1["low"].as<int>();String results_0_daily_1_text_day_str = results_0_daily_1["text_day"].as<String>();Serial.println(F("======Today Weahter ======="));Serial.print(F("DATE: "));Serial.println(results_0_daily_0_date_str);Serial.print(F("Day Weather: "));Serial.print(results_0_daily_0_text_day_str);Serial.print(F(" "));Serial.println(results_0_daily_0_code_day_int);Serial.print(F("Night Weather: "));Serial.print(results_0_daily_0_text_night_str);Serial.print(F(" "));Serial.println(results_0_daily_0_code_night_int);Serial.print(F("High: "));Serial.println(results_0_daily_0_high_int);Serial.print(F("LOW: "));Serial.println(results_0_daily_0_low_int);Serial.print(F("Last Update: "));Serial.println(results_0_last_update_str);Serial.println(F("=============================="));display_1(results_0_daily_1_high_int,results_0_daily_1_low_int,results_0_daily_1_text_day_str);results_0_daily_1_high_int_old=results_0_daily_1_high_int;results_0_daily_1_low_int_old=results_0_daily_1_low_int;results_0_daily_1_text_day_str_old=results_0_daily_1_text_day_str;
}else{display_1(results_0_daily_1_high_int_old,results_0_daily_1_low_int_old,results_0_daily_1_text_day_str_old);
}}
//----------预测明天天气----------
void display_1(int results_0_daily_1_high_int,int results_0_daily_1_low_int,String results_0_daily_1_text_day_str){//显示输出u8g2.clearBuffer();u8g2.setFont(u8g2_font_wqy16_t_gb2312);u8g2.setCursor(15, 14);u8g2.print("上海明天天气");u8g2.setFont(u8g2_font_logisoso24_tr);u8g2.setCursor(20, 46);u8g2.print(results_0_daily_1_low_int);u8g2.setCursor(56, 46);u8g2.print("~");u8g2.setCursor(75, 46);u8g2.print(results_0_daily_1_high_int);u8g2.setCursor(30, 62);u8g2.setFont(u8g2_font_unifont_t_chinese2);u8g2.print(results_0_daily_1_text_day_str);u8g2.sendBuffer();
}/*-------- NTP 代码 ----------*/const int NTP_PACKET_SIZE = 48; // NTP时间在消息的前48个字节里
byte packetBuffer[NTP_PACKET_SIZE]; // 输入输出包的缓冲区time_t getNtpTime()
{IPAddress ntpServerIP; // NTP服务器的地址while (Udp.parsePacket() > 0); // 丢弃以前接收的任何数据包Serial.println("Transmit NTP Request");// 从池中获取随机服务器WiFi.hostByName(ntpServerName, ntpServerIP);Serial.print(ntpServerName);Serial.print(": ");Serial.println(ntpServerIP);sendNTPpacket(ntpServerIP);uint32_t beginWait = millis();while (millis() - beginWait < 1500){int size = Udp.parsePacket();if (size >= NTP_PACKET_SIZE){Serial.println("Receive NTP Response");isNTPConnected = true;Udp.read(packetBuffer, NTP_PACKET_SIZE); // 将数据包读取到缓冲区unsigned long secsSince1900;// 将从位置40开始的四个字节转换为长整型，只取前32位整数部分secsSince1900 = (unsigned long)packetBuffer[40] << 24;secsSince1900 |= (unsigned long)packetBuffer[41] << 16;secsSince1900 |= (unsigned long)packetBuffer[42] << 8;secsSince1900 |= (unsigned long)packetBuffer[43];Serial.println(secsSince1900);Serial.println(secsSince1900 - 2208988800UL + timeZone * SECS_PER_HOUR);return secsSince1900 - 2208988800UL + timeZone * SECS_PER_HOUR;}}Serial.println("No NTP Response :-("); //无NTP响应isNTPConnected = false;return 0; //如果未得到时间则返回0
}// 向给定地址的时间服务器发送NTP请求
void sendNTPpacket(IPAddress &address)
{memset(packetBuffer, 0, NTP_PACKET_SIZE);packetBuffer[0] = 0b11100011; // LI, Version, ModepacketBuffer[1] = 0; // Stratum, or type of clockpacketBuffer[2] = 6; // Polling IntervalpacketBuffer[3] = 0xEC; // Peer Clock Precision// 8 bytes of zero for Root Delay & Root DispersionpacketBuffer[12] = 49;packetBuffer[13] = 0x4E;packetBuffer[14] = 49;packetBuffer[15] = 52;Udp.beginPacket(address, 123); //NTP需要使用的UDP端口号为123Udp.write(packetBuffer, NTP_PACKET_SIZE);Udp.endPacket();
}void oledClockDisplay()
{int years, months, days, hours, minutes, seconds, weekdays;years = year();months = month();days = day();hours = hour();minutes = minute();seconds = second();weekdays = weekday();Serial.printf("%d/%d/%d %d:%d:%d Weekday:%d\n", years, months, days, hours, minutes, seconds, weekdays);u8g2.clearBuffer();u8g2.setFont(u8g2_font_unifont_t_chinese2);u8g2.setCursor(0, 14);if (isNTPConnected){if(timeZone>=0){u8g2.print("当前时间(UTC+");u8g2.print(timeZone);u8g2.print(")");}else{u8g2.print("当前时间(UTC");u8g2.print(timeZone);u8g2.print(")");}}elseu8g2.print("无网络!"); //如果上次对时失败，则会显示无网络String currentTime = "";if (hours < 10)currentTime += 0;currentTime += hours;currentTime += ":";if (minutes < 10)currentTime += 0;currentTime += minutes;currentTime += ":";if (seconds < 10)currentTime += 0;currentTime += seconds;String currentDay = "";currentDay += years;currentDay += "/";if (months < 10)currentDay += 0;currentDay += months;currentDay += "/";if (days < 10)currentDay += 0;currentDay += days;u8g2.setFont(u8g2_font_logisoso24_tr);u8g2.setCursor(0, 44);u8g2.print(currentTime);u8g2.setCursor(0, 61);u8g2.setFont(u8g2_font_unifont_t_chinese2);u8g2.print(currentDay);u8g2.drawXBM(80, 48, 16, 16, xing);u8g2.setCursor(95, 62);u8g2.print("期");if (weekdays == 1)u8g2.print("日");else if (weekdays == 2)u8g2.print("一");else if (weekdays == 3)u8g2.print("二");else if (weekdays == 4)u8g2.print("三");else if (weekdays == 5)u8g2.print("四");else if (weekdays == 6)u8g2.print("五");else if (weekdays == 7)u8g2.drawXBM(111, 49, 16, 16, liu);u8g2.sendBuffer();
}
效果
ESP8266 开发板网络时钟和天气 OLED 显示
