【Arduino 动手做】ESP32 和 Nextion 的原子钟和天气
使用 ESP32 板和 Nextion 2.4 英寸 （240x320），您可以从互联网获得准确的时间和天气预报。准确的时间和天气数据对每个人都有用。您可以花 25-30 欧元购买一个气象站，但只有其中一些将时间同步到 Atomic Clock 服务器。更不用说天气了：充其量，有些项目只有一个用于温度和湿度的室外传感器。从这些，也许还有一个大气压力传感器，可以估计出天气预报？为什么不获得准确的预报，并每小时更新一次呢！您只需通过您的家庭互联网提供商进行阅读，但使用您自己制作的设备，在 Arduino IDE（集成开发环境）下编程。
这不是互联网上第一个可用的此类项目。我们的灵感来自：
http://www.plastibots.com/index.php/2017/01/03/wiot-2-weather-station-nextion-tft-with-esp8266/
我们使用 ESP32，它的文档要少得多。
警告：JSON 解码库 https://github.com/bblanchon/ArduinoJson 已更新，因此我的代码也需要尽快更新！下面给出的代码与最新的库不兼容。
目的
它仅使用可靠的时间和天气数据。房屋周围的传感器从来都不是处于标准条件（阴影、离地高度、精度等），并且这些值可能会产生误导。来自互联网的天气预报是专业和官方的。时间每小时调整一次，因此可以预期最大误差为 1 秒（不是每月，不是每年，而是永久）。
【Arduino 动手做】ESP32 和 Nextion 的原子钟和天气
项目代码/* Upload this project to GeekWorm ESP32-C1 using :
*-selected board: >>SparkFun ESP32 Thing<< or >> Wemos WiFi& Bluetooth battery<<
*- set it to 40MHz (enough for this project)
*-upload speed: 115200 : IMPORTANT!
*-select available COM port
*Connect USB direct to computer (200 mA required +50 mA for LCD) or external power (5V-350mA min/500 mA better)
*If not enough current available: Brownout error!
*Pins: Geekworm ESP32 <--> Nextion
* IO16 - TX
* IO17 - RX
* GND - GND
* 3.3V - +5v(Nextion works also with 3.3V)
*Use Library: "nextion" with a modified file Nextion.h:
*#define nextion Serial2 // This line is for ESP32 with hardware Serial2
*//#define USE_SOFTWARE_SERIAL //Comment this line if you use HardwareSerial
*The Nextion file is genrated using Nextion Editor: digital_clock-weather.HMI
*Once compiled, the file digital_clock-weather.tft can be transfered from File/Open Build folder to the transfer SD card.
*With the SD card inserted, Nextion updates the screen. Remove the SD card and connect the pins to ESP32.
* Project size: 512910/1310720 bytes (321152 compressed) with variables 47956/294912 bytes
*Receives and displays the weather forecast from the Weather Underground and then displays data using a
* JSON decoder wx data to a NEXTION display.
* Weather data received via WiFi connection from Weather Underground Servers and using their 'Forecast' API and data
* is decoded using Copyright Benoit Blanchon's (c) 2014-2017 excellent JSON library.
*
* This MIT License (MIT) is copyright (c) 2017 by David Bird and permission is hereby granted, free of charge, to
* any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software
* without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, but not to sub-license and/or
* to sell copies of the Software or to permit persons to whom the Software is furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
* See more at http://dsbird.org.uk
*/
HardwareSerial Serial2(2); // Activate Serial communication 2 on ESP32 (RX=IO16 and TX=IO17)
#include <TimeLib.h> // Arduino Time library for 32 bit
#include <WiFi.h>
#include <WiFiClient.h>
#include <WiFiUdp.h>
#include <Nextion.h> // Was modified to accept Serial1 hardware on ESP32
#include <ArduinoJson.h>
Nextion myNextion(nextion, 9600); //create a Nextion object named myNextion using the nextion serial port
char ssid[] = "aaaaaaaaaaaaaa";//your network SSID (name)DEFINED in callserver();
char pass[] = "bbbbbbbbbbbbbb"; // your network password
const int ledPin =0,timeZone = 2; // East European Time (winter time)
char daysOfTheWeek = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
String RomanMonths = {"I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX", "X", "XI", "XII"}; // January is month 0
String month_of_year = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"}; // January is month 0
int days,DST=0;
unsigned long t0t=0, tsec=3600, t0w=0, wsec=3600; // Update weather after wsec (30 min...2h is ok) and time after tsec (2..4h) {unsigned long < 4.29e9}
//------ WEATHER NETWORK VARIABLES---------
// Use your own API key by signing up for a free developer account at http://www.wunderground.com/weather/api/
//Selected Plan: Stratus Developer: Calls Per Day= 500;Calls Per Minute : 10
String API_key = "xxxxxxxxxxxxxxxxx"; // See: http://www.wunderground.com/weather/api/d/docs (change here with your KEY)
String City = "yyyyyyyyyyyyy"; // Your home city : Weather Station ID: IBUCURET77
String pws = "zzzzzzzzzzzz"; //Dinicu Golescu 35 https://www.wunderground.com/personal-weather-station/dashboard?ID=IMUNICIP22&cm_ven=localwx_pwsdash
String Country = "CC"; // Your country
String Conditions = "conditions"; // See: http://www.wunderground.com/weather/api/d/docs?d=data/index&MR=1
char wxserver[] = "api.wunderground.com"; // Address for WeatherUnderGround
// unsigned long lastConnectionTime = 0; // Last time you connected to the server, in milliseconds
String SITE_WIDTH ="900";
String icon_set ="k"; //
String Units ="M"; // Default use either M for Metric, X for Mixed and I for Imperial
char* conds[]={"\"temp_c\":"};
// These are all (?) weather short definitions:
String rain="Rain, Hail, Rain Showers, Ice Pellet Showers, Hail Showers, Small Hail Showers, Freezing Rain, Small Hail, rain";
String thunde="Thunderstorm, Thunderstorms and Rain, Thunderstorms and Snow, Thunderstorms and Ice Pellets, Thunderstorms with Hail, Thunderstorms with Small Hail, chancetstorms, tstorms";
String sunny="Clear, Unknown Precipitation, Unknown, sunny, unknown, clear";
String cloudy="Overcast, cloudy";
String chanceflurries="chanceflurries, flurries";
String chancerain="Drizzle, Rain Mist, chancerain, chancesleet, sleet";
String chancesnow="Snow Grains, Ice Crystals, Ice Pellets, Low Drifting Snow, Snow Blowing Snow Mist, Freezing Drizzle, chancesnow";
String fog="Mist, Fog, FogPatches, Smoke, VolcanicAsh, WidespreadDust, Sand, Haze, Spray, DustWhirls, Sandstorm, LowDrifting WidespreadDust, LowDriftingSand, BlowingWidespreadDust, BlowingSand, FreezingFog, PatchesofFog, ShallowFog, fog, hazy";
String mostlycloudy="MostlyCloudy, Squalls, FunnelCloud, mostlycloudy, partlysunny";
String partlycloudy="PartlyCloudy, ScatteredClouds, mostlysunny, partlycloudy";
String snow="Snow, Blowing Snow, Snow Showers, snow";
float temp_c=0;
int temp_e, nr=0;
String wind_e, h_up, m_up, h_set, m_set; // Data strings
boolean timeok=false, foreok=false, condok=false, zzz=false;// Update flags
//-------------------------------------------------------------------------------------------
//################ PROGRAM VARIABLES and OBJECTS ################
// Conditions
String webpage, city, country, date_time, observationtime,
DWDay0, DMon0, DDateDa0, DDateMo0, DDateYr0, Dicon0, Dicon_url0, DHtemp0, DLtemp0, DHumi0, Dpop0, DRain0, DW_mph0, DW_dir0, DW_dir_deg0, DWeather0, Dconditions0, DcurrentTemp, Txw1,
DWDay1, DMon1, DDateDa1, DDateMo1, DDateYr1, Dicon1, Dicon_url1, DHtemp1, DLtemp1, DHumi1, DPop1, DRain1, DW_mph1, DW_dir1, DW_dir_deg1, DWeather1, Dconditions1,
DWDay2, DMon2, DDateDa2, DDateMo2, DDateYr2, Dicon2, Dicon_url2, DHtemp2, DLtemp2, DHumi2, DPop2, DRain2, DW_mph2, DW_dir2, DW_dir_deg2, DWeather2, Dconditions2,
DWDay3, DMon3, DDateDa3, DDateMo3, DDateYr3, Dicon3, Dicon_url3, DHtemp3, DLtemp3, DHumi3, DPop3, DRain3, DW_mph3, DW_dir3, DW_dir_deg3, DWeather3, Dconditions3,
DWDay4, DMon4, DDateDa4, DDateMo4, DDateYr4, Dicon4, Dicon_url4, DHtemp4, DLtemp4, DHumi4, DPop4, DRain4, DW_mph4, DW_dir4, DW_dir_deg4, DWeather4, Dconditions4;
char buffer = {0};
char buffer_hour = {0};
char Txtweather;
//-------------------------------------------------------------------------------------------
// NTP Servers:
//static const char ntpServerName[] = "ntps1-0.cs.tu-berlin.de"; // Chosen Atomic Time server
static const char ntpServerName[] = "0.pool.ntp.org"; // Recommended server
const int NTP_PACKET_SIZE = 48; // NTP time stamp is in the first 48 bytes of the message
byte packetBuffer[ NTP_PACKET_SIZE]; //buffer to hold incoming and outgoing packets
// A UDP instance to let us send and receive packets over UDP
WiFiUDP Udp; // Initialize User Datagram Protocol (UDP)
unsigned int localPort = 8888; // local port to listen for UDP time packets
//-------------------------------------------------------------------------------------------
// List of the functions defined below:
time_t getNtpTime(); // Convert received seconds into HH:MM:SS, YY-MO-DD
void sendNTPpacket(IPAddress &address);// Require site data
void digitalClockDisplay(); // See below function to print time on Nextion
void weatherDisplay(); // See below function to print weather on Nextion
void obtain_forecast (String forecast_type); // See below function to get weather data
#define min(a,b) ((a)<(b)?(a):(b)); // Define the min(a,b) function!
// =======================================================================
void callserver(){
// Start by connecting to a local WiFi router
// Since WiFi.disconnect(true)erases ssid&pass, define these here each time.
// =========================!!!!!===================================
char ssid[] = "RomTelecom-WEP-B086";//your network SSID (name)
char pass[] = "AYPDG7J5TFKGF"; // your network password
// =========================!!!!!===================================
Serial.println(F("============================================"));
Serial.print(F("Connecting to "));Serial.print(ssid); Serial.print(F(" & ")); Serial.println(pass);
delay(200);
WiFi.begin(ssid, pass);
Serial.println(F(">>>>>>>")); Serial.print("Connecting...");
myNextion.setComponentText("g0","Connecting..."); // Scroll weather description text !
delay(300);
int iter=0; // Try several times to connect to local router
while (WiFi.status() != WL_CONNECTED&& iter<50) {
// LED blink as long as the connection is not establihed
delay(500);
digitalWrite(ledPin, LOW);
delay(500);
digitalWrite(ledPin, HIGH);
Serial.print(".");
iter++;
}
if (iter<50){
digitalWrite(ledPin, HIGH); // Led OFF
Serial.print("WiFi connected to local"); Serial.print("IP : ");
Serial.println(WiFi.localIP()); Serial.println("********************************");
myNextion.setComponentText("g0","Connected. Updating soon!"); // Scroll weather description text !
delay(300);
// At this stage the ESP32 is connected to the local network
}
else{
digitalWrite(ledPin, LOW); // Led ON
Serial.println(F("!! WiFi connection failed !!!"));
Serial.println(F("!!!!!!!!!!!!!!!!!!!!!!!!!!!!"));
WiFi.disconnect(true);
delay(2000);
}
}
void setup()
{
Serial.begin(115200); // USB communication with Serial Monitor
Serial2.begin(9600); // Initiate 2-nd UART towards Nextion
pinMode(ledPin, OUTPUT); // Set Led pin as output
myNextion.sendCommand("rest"); // reset Nextion
myNextion.sendCommand("dim=40"); // Dim to 40% the display
while(WiFi.status() != WL_CONNECTED){
callserver(); // Try to connect to local server
}
Serial.print("Synchronizing time: ");
Serial.println(ntpServerName);
setSyncProvider(getNtpTime); // Set the MCU time from Internet: the Atomic Clock Time
setSyncInterval(86400); // Requiring sync. after ... seconds
// but will fail if WiFi is turned off.
Serial.print("Next sync. in ");Serial.print(tsec);Serial.println(" s");
Udp.stop(); // STOP UDP
delay(500);
obtain_forecast("forecast"); // Get weather forecast
obtain_forecast("conditions"); // Get local conditions
digitalWrite(ledPin, HIGH); // LED OFF if OK
Serial.println("==============================================");
Serial.print("Weather for current time:");
Serial.print(hour());Serial.print(":");Serial.print(minute());Serial.print(":");Serial.println(second());
Serial.print("Time status:");Serial.println(timeok);
Serial.print("Forecast status:");Serial.println(foreok);
Serial.print("Conditions status:");Serial.println(condok);
Serial.println(DWDay1);Serial.println(Dicon1);Serial.println(DHtemp1);
Serial.println(DLtemp1);Serial.println(DHumi1);Serial.println(DW_mph1);
Serial.println(DWDay2);Serial.println(Dicon2);Serial.println(DHtemp2);
Serial.println(DLtemp2);Serial.println(DHumi2);Serial.println(DW_mph2);
Serial.println(DWDay3);Serial.println(Dicon3);Serial.println(DHtemp3);
Serial.println(DLtemp3);Serial.println(DHumi3);Serial.println(DW_mph3);
Serial.println("--Local weather, now: --");
Serial.println(Txtweather);Serial.println(temp_e);Serial.println(wind_e);
Serial.print(h_up);Serial.print(":"); Serial.println(m_up);
Serial.print(h_set);Serial.print(":");Serial.println(m_set);
vTaskDelay(100/portTICK_RATE_MS);
Serial.println("==============================================");
digitalClockDisplay(); // Send clock data to Nextion
vTaskDelay(100/portTICK_RATE_MS);
weatherDisplay(); // Send weather data to Nextion
nr=min(tsec, wsec);
Serial.print("WiFi off for "); Serial.print(nr); Serial.println(" s : after Setup");
WiFi.disconnect(true); // STOP WIFI!!
vTaskDelay(100/portTICK_RATE_MS);
nr=0;
}
time_t prevDisplay = 0; // moment when the clock was displayed
void loop()
{
// Every second: update time on Nextion
if (now() != prevDisplay) { // ..update the display only if time has changed
prevDisplay = now();
//----------------------------------------
// Compute DST hour if server is not a local one:
DST=0;
if (month()>3 && month()<10)
DST=1;
days=31-((5*year())/4+4)%7;
if (month()==3 && day()>=days)
DST=1;
days=31-((5*year())/4+1)%7;
if (month()==10 && day()<days)
DST=1;
//----------------------------------------
digitalClockDisplay(); // Send clock data to Nextion every second
}
if(millis() - t0t > tsec*1e3) { // after every time interval "tsec"
if (WiFi.status() != WL_DISCONNECTED)
WiFi.disconnect(true);
// if (timeStatus() == timeNeedsSync){
// Firstly: connect to local router (WiFi might be disconnected)
vTaskDelay(100/portTICK_RATE_MS);
while(WiFi.status() != WL_CONNECTED){
callserver(); // Try to connect to local server
if(WiFi.status() != WL_CONNECTED){
delay(5000);
Serial.println("RESET ESP32 in loop() for time update !!!!");
ESP.restart(); // Restart ESP32! So, the code is reinitialized!!
}
// Should be connected at this point, or MCU restarted ???
}
if(WiFi.status() == WL_CONNECTED){
Serial.print("Synchronizing time: ");Serial.println(ntpServerName);
// The "Time" library is supposed to connect to time server now
setSyncProvider(getNtpTime); // Set the MCU time from Internet: the Atomic Clock Time
setSyncInterval(86400); // Requiring sync. after ... seconds
// but will fail if WiFi is turned off.
Serial.print("Next sync. in ");Serial.print(tsec);Serial.println(" s");
Udp.stop(); // STOP UDP
delay(500);
obtain_forecast("forecast"); // Get weather forecast
obtain_forecast("conditions");
if (timeok==true){
t0t=millis();
myNextion.setComponentValue("bt3",0);// Button3 [:] has blue bkgd. if time is updated ...
myNextion.setComponentValue("bt4",0);// Button4 [:] has blue bkgd. if time is updated ...
WiFi.disconnect(true);
Serial.print(F("WiFi off for ")); Serial.print(tsec); Serial.println(F(" s : after Time & Weather sync.!"));
}
else{
myNextion.setComponentValue("bt3",1);// Button3 [:] has orange bkgd. if time is not updated ...
myNextion.setComponentValue("bt4",1);// Button4 [:] has orange bkgd. if time is not updated ...
delay(500);
WiFi.disconnect(true);
Serial.print(F("WiFi off for ")); Serial.print(tsec); Serial.println(F(" s : Failed sync.!"));
}
}
else{
t0t=tsec*1e3-60000; // Repeat updating in 1 minute
WiFi.disconnect(true);
Serial.println(F("!! WiFi off after failing to connect!"));
}
// Just for debugging, print results on Serial Monitor attached via USB
Serial.println(F("=============================================="));
Serial.print(F("Weather for current time:"));
Serial.print(hour());Serial.print(":");Serial.print(minute());Serial.print(":");Serial.println(second());
nr++;
Serial.print("Update no:");Serial.println(nr);
Serial.print("Time status:");Serial.println(timeok);
Serial.print("Forecast status:");Serial.println(foreok);
Serial.print("Conditions status:");Serial.println(condok);
Serial.println(F("----------------------------------------------"));
Serial.println(DWDay1); Serial.println(Dicon1); Serial.println(DHtemp1);
Serial.println(DLtemp1); Serial.println(DHumi1); Serial.println(DW_mph1);
Serial.println(DWDay2); Serial.println(Dicon2); Serial.println(DHtemp2);
Serial.println(DLtemp2); Serial.println(DHumi2); Serial.println(DW_mph2);
Serial.println(DWDay3); Serial.println(Dicon3); Serial.println(DHtemp3);
Serial.println(DLtemp3); Serial.println(DHumi3); Serial.println(DW_mph1);
Serial.println(Txtweather); Serial.println(temp_e); Serial.println(wind_e);
Serial.print(h_up);Serial.print(":"); Serial.println(m_up);
Serial.print(h_set);Serial.print(":");Serial.println(m_set);
// In any case write weather data to Nextion
weatherDisplay(); // Send weather data to Nextion
}
//==============================================================================
// During night hours 0-6, turn off display, but reactivate if touched
if (hour()<6 && zzz==false){
myNextion.sendCommand("dim=0"); // Dim to 0 the display
// myNextion.sendCommand("thup=1"); // Remain responsive to touch
delay(1000);
zzz=true; // Sleeping flag ON, to do this once/day.
Serial.println(F("Display sleeping!"));
//myNextion.sendCommand("sleep=1"); // Go to sleep Nextion!!
}
else if (hour()>=6 && zzz==true){
myNextion.sendCommand("dim=40"); // Dim to 40% the display
//myNextion.sendCommand("wup"); // wake-up Nextion
delay(1000);
zzz=false; // Not-sleelping flag
Serial.println(F("Display activated!"));
}
//==============================================================================
if (millis() < t0t){
t0t=millis(); // After millis reached the limit, reset counters
Serial.print("Time counter t0t reset!");
}
if (millis() < t0w){
t0w=millis(); // After millis reached the limit, reset counters
Serial.print("Weather counter t0w reset!");
}
}
void digitalClockDisplay()
{// Write Clock data on Nextion
// Display the time. Digital clock.
// Send a number to a number cell of Nextion
if (DST==1)
myNextion.setComponentValue("n0",hour()+1);
else
myNextion.setComponentValue("n0",hour());
myNextion.setComponentValue("n1",minute());
myNextion.setComponentValue("n2",second());
myNextion.setComponentText("t3",daysOfTheWeek);
// Send strings to string cells of Nextion
myNextion.setComponentText("t4", String(day()));
//myNextion.setComponentText("t5", String(month()));
myNextion.setComponentText("t5", month_of_year);
myNextion.setComponentText("t6", String(year()));
}
void weatherDisplay()
{// Write weather data on Nextion
myNextion.sendCommand("page 0");
myNextion.setComponentValue("n3",temp_e); // to numeric obj. n3 Temp. outside now
myNextion.setComponentText("t8",wind_e); // to text obj. 8 Wind speed outside now
myNextion.setComponentText("t10",DHtemp1); // to text obj. 10Max Temp. of the day
myNextion.setComponentText("t11",DLtemp1); // to text obj. 11Min Temp. of the day
myNextion.setComponentText("t12",DHumi1); // to text obj. 12Humidityof the day
myNextion.setComponentText("g0",Txtweather); // Scroll weather description text + minutes after update!
myNextion.setComponentText("t33",h_up+":"+m_up); // to text obj. 33Sun rise time
myNextion.setComponentText("t34",h_set+":"+m_set); // to text obj. 33Sun set time
myNextion.sendCommand("page 1");
myNextion.setComponentText("t14",daysOfTheWeek[(weekday())%7]);// Swow tomorow
myNextion.setComponentText("t20",DHtemp2); //to text obj. 20 Estimated High Temp.
myNextion.setComponentText("t21",DLtemp2);// Estimated Low Temp.
myNextion.setComponentText("t22",DHumi2); // Estimated humidity
myNextion.setComponentText("t31",DW_mph2);// Estimated wind speed
myNextion.setComponentText("t15",daysOfTheWeek[(weekday()+1)%7]); // Swow after tomorow
myNextion.setComponentText("t26",DHtemp3);//to text obj. 26 Estimated High Temp.
myNextion.setComponentText("t27",DLtemp3);// Estimated Low Temp.
myNextion.setComponentText("t28",DHumi3); // Estimated humidity
myNextion.setComponentText("t32",DW_mph3);// Estimated wind speed
myNextion.sendCommand("page 0");
// Now change the pictures accordingly:
if(Dicon1=="clear")
myNextion.sendCommand("p0.pic=0");
if(Dicon1=="partlycloudy")
myNextion.sendCommand("p0.pic=1");
if(Dicon1=="cloudy"||Dicon1=="mostlycloudy")
myNextion.sendCommand("p0.pic=2");
if(Dicon1=="rain" || Dicon1=="chancerain")
myNextion.sendCommand("p0.pic=3");
if(Dicon1=="snow")
myNextion.sendCommand("p0.pic=4");
if(Dicon1=="fog" || Dicon1=="hazy" || Dicon1=="mist")
myNextion.sendCommand("p0.pic=5");
if(Dicon1=="thunderstorm" || Dicon1=="chancetstorms")
myNextion.sendCommand("p0.pic=6");
if(Dicon1=="sleet" || Dicon1=="chancetstorms")
myNextion.sendCommand("p0.pic=6");
myNextion.sendCommand("page 1"); // Go to page 1
if(Dicon2=="clear")
myNextion.sendCommand("p1.pic=0");
if(Dicon2=="partlycloudy")
myNextion.sendCommand("p1.pic=1");
if(Dicon2=="cloudy"||Dicon1=="mostlycloudy")
myNextion.sendCommand("p1.pic=2");
if(Dicon2=="rain" || Dicon2=="chancerain")
myNextion.sendCommand("p1.pic=3");
if(Dicon2=="snow")
myNextion.sendCommand("p1.pic=4");
if(Dicon2=="fog" || Dicon2=="hazy" || Dicon2=="mist")
myNextion.sendCommand("p1.pic=5");
if(Dicon2=="thunderstorm" || Dicon2=="chancetstorms")
myNextion.sendCommand("p1.pic=6");
if(Dicon3=="clear")
myNextion.sendCommand("p2.pic=0");
if(Dicon3=="partlycloudy")
myNextion.sendCommand("p2.pic=1");
if(Dicon3=="cloudy"||Dicon1=="mostlycloudy")
myNextion.sendCommand("p2.pic=2");
if(Dicon3=="rain" || Dicon3=="chancerain")
myNextion.sendCommand("p2.pic=3");
if(Dicon3=="snow")
myNextion.sendCommand("p2.pic=4");
if(Dicon3=="fog" || Dicon3=="hazy" || Dicon3=="mist")
myNextion.sendCommand("p2.pic=5");
if(Dicon3=="thunderstorm" || Dicon3=="chancetstorms")
myNextion.sendCommand("p2.pic=6");
myNextion.sendCommand("page 0"); // Come back to page 0
if (condok==true)
myNextion.setComponentValue("bt1",1);// Button1 is green if local conditions are updated ...
else
myNextion.setComponentValue("bt1",0);// else it is red.
if (foreok==true)
myNextion.setComponentValue("bt2",1);// Button2 is green if forecast is updated ...
else
myNextion.setComponentValue("bt2",0);// else it is red.
}
/*-------- NTP code ----------*/
time_t getNtpTime()
{ //PaulStoffregen/Time
while(WiFi.status() != WL_CONNECTED){
callserver(); // Try (50 times) to connect to the local server
if(WiFi.status() != WL_CONNECTED){
delay(3000);
ESP.restart(); // Restart ESP32! So, the code is reinitialized!!
}
// Should be connected at this point, or MCU restarted
}
Udp.begin(localPort);
IPAddress ntpServerIP; // NTP server's ip address
// while (Udp.parsePacket() > 0) ; // discard any previously received packets
Serial.print("Transmit NTP Request to:");
WiFi.hostByName(ntpServerName, ntpServerIP);
Serial.print(ntpServerName);Serial.print("= ");Serial.println(ntpServerIP);
uint32_t beginWait = millis();
sendNTPpacket(ntpServerIP);
while (millis() - beginWait < 5000) {
int size = Udp.parsePacket();
if (size >= NTP_PACKET_SIZE) {
Udp.read(packetBuffer, NTP_PACKET_SIZE);// read packet into the buffer
Serial.println(F("Received NTP Response. Successfully updated Time..."));
Serial.println(F("====================================="));
timeok=true;
unsigned long secsSince1900;
// convert four bytes starting at location 40 to a long integer
secsSince1900 =(unsigned long)packetBuffer << 24;
secsSince1900 |= (unsigned long)packetBuffer << 16;
secsSince1900 |= (unsigned long)packetBuffer << 8;
secsSince1900 |= (unsigned long)packetBuffer;
return secsSince1900 - 2208988800UL + timeZone * SECS_PER_HOUR;// maybe add +1 for update delays?
// Exit function here.
}
else
timeok=false;
}
Udp.endPacket();
Serial.println("No NTP Response :-(");
Serial.println("Time is not synchronized");
Serial.println("RESET ESP32 in getNtpTime() !!!!");
ESP.restart(); // Restart ESP32! So, the code is reinitialized!!
return 0; // return 0 if unable to get the time
}
void sendNTPpacket(IPAddress& address)
// send an NTP request to the time server at the given address
{
Serial.println("sending NTP packet...");
// set all bytes in the buffer to 0
memset(packetBuffer, 0, NTP_PACKET_SIZE);
// Initialize values needed to form NTP request
// (see URL above for details on the packets)
packetBuffer = 0b11100011; // LI, Version, Mode
packetBuffer = 0; // Stratum, or type of clock
packetBuffer = 6; // Polling Interval
packetBuffer = 0xEC;// Peer Clock Precision
// 8 bytes of zero for Root Delay & Root Dispersion
packetBuffer= 49;
packetBuffer= 0x4E;
packetBuffer= 49;
packetBuffer= 52;
// all NTP fields have been given values, now
// you can send a packet requesting a timestamp:
Udp.beginPacket(address, 123); //NTP requests are to port 123
Udp.write(packetBuffer, NTP_PACKET_SIZE);
Udp.endPacket();
}
void obtain_forecast (String forecast_type) {
static char RxBuf;
String request;
if (forecast_type=="forecast")
request= "GET /api/" + API_key + "/"+ forecast_type + "/q/" + Country + "/" + City + ".json HTTP/1.1\r\n"; // Request Country/City
else
request= "GET /api/" + API_key + "/"+ forecast_type + "/astronomy/q/geolookup/pws:" + pws + ".json HTTP/1.1\r\n";// Request data by pws station
// http://api.wunderground.com/api/7a4e220afaaf6547/conditions/q/geolookup/pws:IBUCURET77.json
request += F("User-Agent: Weather Webserver v");
//request += version;
request += F("\r\n");
request += F("Accept: */*\r\n");
request += "Host: " + String(wxserver) + "\r\n";
request += F("Connection: close\r\n");
request += F("\r\n");
Serial.println(F("------------------------------------------"));
Serial.print(F("Connecting to ")); Serial.println(wxserver);
WiFiClient httpclient;
if (!httpclient.connect(wxserver, 80)) {
Serial.println(F("connection failed"));
httpclient.flush();//Waits until all outgoing characters in buffer have been sent (forever if lost connection!)
httpclient.stop();
WiFi.disconnect(true);
vTaskDelay(1000/portTICK_RATE_MS);
ESP.restart(); // Restart ESP32! So, the code is reinitialized???
return;
}
vTaskDelay(100/portTICK_RATE_MS);
httpclient.print(request); //send the request to the server
httpclient.flush();//Waits until all outgoing characters in buffer have been sent (forever if connection lost)
Serial.print(forecast_type); Serial.print(F(": "));
Serial.println("The request was sent to Weather server. Waiting for the response...");
vTaskDelay(100/portTICK_RATE_MS);
// Collect http response headers and content from Weather Underground, discarding HTTP headers,
// the content is JSON formatted and will be returned in RxBuf.
int respLen = 0;
bool skip_headers = true;
String rx_line;
unsigned long beginWait = millis();
while ((httpclient.connected() || httpclient.available()) && (millis() - beginWait < 10000)) {
//vTaskDelay(10/portTICK_RATE_MS);//works for keeping the watchdog fed when there is no other activity
if (skip_headers) {
rx_line = httpclient.readStringUntil('\n');
if (rx_line.length() <= 1) { // a blank line denotes end of headers
skip_headers = false;
}
}
else {
int bytesIn;
bytesIn = httpclient.read((uint8_t *)&RxBuf, sizeof(RxBuf) - respLen);
Serial.print(F("bytesIn: ")); Serial.println(bytesIn);
if (bytesIn > 0) {
respLen += bytesIn; // Gather bytes in RxBuf
if (respLen > sizeof(RxBuf)) respLen = sizeof(RxBuf);
//vTaskDelay(10/portTICK_RATE_MS); //works for keeping the watchdog fed when there is no other activity
}
else if (bytesIn < 0) {
vTaskDelay(200/portTICK_RATE_MS);
Serial.print("?");// Appears very often, waiting for an answer!
vTaskDelay(200/portTICK_RATE_MS); //works for keeping the watchdog fed when there is no other activity
}
}
vTaskDelay(100/portTICK_RATE_MS); //works for keeping the watchdog fed when there is no other activity
}
httpclient.stop();
vTaskDelay(100/portTICK_RATE_MS); //works for keeping the watchdog fed when there is no other activity
RxBuf = '\0'; // Terminate the C string
// RxBuf contains now the server response, of length=respLen.
if (respLen<=1 && forecast_type == "forecast"){
foreok=false; // If no data available return without changing forecast
return;
}
if (respLen<=1 && forecast_type == "conditions"){
condok=false; // If no data available return without changing conditions
return;
}
if (forecast_type == "forecast"){
if (showWeather_forecast(RxBuf)){
foreok=true;
vTaskDelay(50/portTICK_RATE_MS); //works for keeping the watchdog fed when there is no other activity
}
}
if (forecast_type == "conditions"){
if (showWeather_conditions(RxBuf)){
condok=true;
vTaskDelay(50/portTICK_RATE_MS); //works for keeping the watchdog fed when there is no other activity
}
}
}
bool showWeather_forecast(char *json)
{// Convert forecast received data into Strings and values
DynamicJsonBuffer jsonBuffer(8704);
char *jsonstart = strchr(json, '{'); // Look for first "{"
// Serial.println(F("jsonstart ")); Serial.println(jsonstart); // This is input data
if (jsonstart == NULL) {
Serial.println(F("JSON data missing"));
return false;
}
json = jsonstart;
// Parse JSON
JsonObject& root = jsonBuffer.parseObject(json);
if (!root.success()) {
Serial.println(F("jsonBuffer.parseObject() failed"));
return false;
}
JsonObject& forecast = root["forecast"]["simpleforecast"];
String WDay1 = forecast["forecastday"]["date"]["weekday"]; DWDay1 = WDay1;
int DateDa1 = forecast["forecastday"]["date"]["day"]; DDateDa1 = DateDa1<10?"0"+String(DateDa1):String(DateDa1);
String Temp_mon = forecast["forecastday"]["date"]["monthname"];
String Mon1 = forecast["forecastday"]["date"]["monthname_short"]; DMon1 = Mon1;
int DateYr1 = forecast["forecastday"]["date"]["year"]; DDateYr1 = String(DateYr1).substring(2);
observationtime = "from " + String(DDateDa1) + " " + Temp_mon + ", " + DateYr1;
if (Units == "M" || Units == "X") {
String icon1 = forecast["forecastday"]["icon"]; Dicon1 = String(icon1);
String conditions1 = forecast["forecastday"]["conditions"]; Dconditions1 = String(conditions1);
int Htemp1 = forecast["forecastday"]["high"]["celsius"]; DHtemp1 = String(Htemp1);
int Ltemp1 = forecast["forecastday"]["low"]["celsius"]; DLtemp1 = String(Ltemp1);
int rain1 = forecast["forecastday"]["qpf_allday"]["mm"]; DRain1 = String(rain1)+"mm";
if (Units == "M") {int w_mph1 = forecast["forecastday"]["avewind"]["kph"];DW_mph1 = String(w_mph1)+"km/h";}
else {int w_mph1 = forecast["forecastday"]["avewind"]["mph"];DW_mph1 = String(w_mph1)+"mph";}
}
String icon_url1= forecast["forecastday"]["icon_url"];
Dicon_url1 = icon_url1.substring(0,icon_url1.indexOf("/i/c/")+5) + icon_set + icon_url1.substring(icon_url1.indexOf("/i/c/")+6);
String pop1 = forecast["forecastday"]["pop"]; DPop1 = String(pop1);
String w_dir1 = forecast["forecastday"]["avewind"]["dir"]; DW_dir1 = String(w_dir1);
String w_dir_deg1 = forecast["forecastday"]["avewind"]["degrees"]; DW_dir_deg1 = String(w_dir_deg1);
int humi1 = forecast["forecastday"]["avehumidity"]; DHumi1 = String(humi1);
String WDay2 = forecast["forecastday"]["date"]["weekday"]; DWDay2 = WDay2;
int DateDa2 = forecast["forecastday"]["date"]["day"]; DDateDa2 = DateDa2<10?"0"+String(DateDa2):String(DateDa2);
String Mon2 = forecast["forecastday"]["date"]["monthname_short"]; DMon2 = Mon2;
int DateYr2 = forecast["forecastday"]["date"]["year"]; DDateYr2 = String(DateYr2).substring(2);
if (Units == "M" || Units == "X") {
String icon2 = forecast["forecastday"]["icon"]; Dicon2 = String(icon2);
String conditions2 = forecast["forecastday"]["conditions"]; Dconditions2 = String(conditions2);
int Htemp2 = forecast["forecastday"]["high"]["celsius"]; DHtemp2 = String(Htemp2);
int Ltemp2 = forecast["forecastday"]["low"]["celsius"]; DLtemp2 = String(Ltemp2);
int rain2 = forecast["forecastday"]["qpf_allday"]["mm"]; DRain2 = String(rain2)+"mm";
if (Units == "M"){int w_mph2 = forecast["forecastday"]["avewind"]["kph"]; DW_mph2 = String(w_mph2)+"km/h";}
else {int w_mph2= forecast["forecastday"]["avewind"]["mph"]; DW_mph2 = String(w_mph2)+"mph";
}
}
String icon_url2= forecast["forecastday"]["icon_url"];
Dicon_url2 = icon_url2.substring(0,icon_url2.indexOf("/i/c/")+5) + icon_set + icon_url2.substring(icon_url2.indexOf("/i/c/")+6);
String pop2 = forecast["forecastday"]["pop"]; DPop2 = String(pop2);
String w_dir2 = forecast["forecastday"]["avewind"]["dir"]; DW_dir2 = String(w_dir2);
String w_dir_deg2 = forecast["forecastday"]["avewind"]["degrees"]; DW_dir_deg2 = String(w_dir_deg2);
int humi2 = forecast["forecastday"]["avehumidity"]; DHumi2 = String(humi2);
String WDay3 = forecast["forecastday"]["date"]["weekday"]; DWDay3 = WDay3;
int DateDa3 = forecast["forecastday"]["date"]["day"]; DDateDa3 = DateDa3<10?"0"+String(DateDa3):String(DateDa3);
String Mon3 = forecast["forecastday"]["date"]["monthname_short"]; DMon3 = Mon3;
int DateYr3 = forecast["forecastday"]["date"]["year"]; DDateYr3 = String(DateYr3).substring(2);
if (Units == "M" || Units == "X") {
String icon3 = forecast["forecastday"]["icon"]; Dicon3 = String(icon3);
String conditions3 = forecast["forecastday"]["conditions"]; Dconditions3 = String(conditions3);
int Htemp3 = forecast["forecastday"]["high"]["celsius"]; DHtemp3 = String(Htemp3);
int Ltemp3 = forecast["forecastday"]["low"]["celsius"]; DLtemp3 = String(Ltemp3);
int rain3 = forecast["forecastday"]["qpf_allday"]["mm"]; DRain3 = String(rain3)+"mm";
if (Units == "M") {int w_mph3 = forecast["forecastday"]["avewind"]["kph"]; DW_mph3 = String(w_mph3)+"km/h"; }
else {int w_mph3= forecast["forecastday"]["avewind"]["mph"]; DW_mph3 = String(w_mph3)+"mph"; }
}
String icon_url3= forecast["forecastday"]["icon_url"];
Dicon_url3 = icon_url3.substring(0,icon_url3.indexOf("/i/c/")+5) + icon_set + icon_url3.substring(icon_url3.indexOf("/i/c/")+6);
String pop3 = forecast["forecastday"]["pop"]; DPop3 = String(pop3);
String w_dir3 = forecast["forecastday"]["avewind"]["dir"]; DW_dir3 = String(w_dir3);
String w_dir_deg3 = forecast["forecastday"]["avewind"]["degrees"]; DW_dir_deg3 = String(w_dir_deg3);
int humi3 = forecast["forecastday"]["avehumidity"]; DHumi3 = String(humi3);
String WDay4 = forecast["forecastday"]["date"]["weekday"]; DWDay4 = WDay4;
int DateDa4 = forecast["forecastday"]["date"]["day"]; DDateDa4 = DateDa4<10?"0"+String(DateDa4):String(DateDa4);
String Mon4 = forecast["forecastday"]["date"]["monthname_short"]; DMon4 = Mon4;
int DateYr4 = forecast["forecastday"]["date"]["year"]; DDateYr4 = String(DateYr4).substring(2);
if (Units == "M" || Units == "X") {
String icon4 = forecast["forecastday"]["icon"]; Dicon4 = String(icon4);
String conditions4 = forecast["forecastday"]["conditions"]; Dconditions4 = String(conditions4);
int Htemp4 = forecast["forecastday"]["high"]["celsius"]; DHtemp4 = String(Htemp4);
int Ltemp4 = forecast["forecastday"]["low"]["celsius"]; DLtemp4 = String(Ltemp4);
int rain4 = forecast["forecastday"]["qpf_allday"]["mm"]; DRain4 = String(rain4)+"mm";
if (Units == "M") {int w_mph4 = forecast["forecastday"]["avewind"]["kph"]; DW_mph4 = String(w_mph4)+"km/h";}
else {int w_mph4= forecast["forecastday"]["avewind"]["mph"]; DW_mph4 = String(w_mph4)+"mph";}
}
String icon_url4= forecast["forecastday"]["icon_url"];
Dicon_url4 = icon_url4.substring(0,icon_url4.indexOf("/i/c/")+5) + icon_set + icon_url4.substring(icon_url4.indexOf("/i/c/")+6);
String pop4 = forecast["forecastday"]["pop"]; DPop4 = String(pop4);
String w_dir4 = forecast["forecastday"]["avewind"]["dir"]; DW_dir4 = String(w_dir4);
String w_dir_deg4 = forecast["forecastday"]["avewind"]["degrees"]; DW_dir_deg4 = String(w_dir_deg4);
int humi4 = forecast["forecastday"]["avehumidity"]; DHumi4 = String(humi4);
JsonObject& current = root["forecast"]["txt_forecast"];
String Txw1= current ["forecastday"]["fcttext_metric"];// Read the text describing the forecast.
Txw1.toCharArray(Txtweather, 200); // Convert String to CharArray for Nextion
return true;
}
bool showWeather_conditions(char *json)
{// Convert forecast received data into Strings and values
DynamicJsonBuffer jsonBuffer(8704);
char *jsonstart = strchr(json, '{');
//Serial.println(F("jsonstart ")); Serial.println(jsonstart); // This is input data
if (jsonstart == NULL) {
Serial.println(F("JSON data missing"));
return false; }
json = jsonstart;
// Parse JSON
JsonObject& root = jsonBuffer.parseObject(json);
if (!root.success()) {
Serial.println(F("jsonBuffer.parseObject() failed"));
return false; }
JsonObject& current = root["current_observation"];
const float temp_c = current["temp_c"]; // Extract local temp. now
const float wind_c = current["wind_kph"]; // Extract local wind speed now
const charh_c = current["relative_humidity"]; // Extract local humidity now
temp_e=temp_c+0.5; // Round the decimal value
wind_e=String(wind_c,0)+"km/h"; // Convert wind speed to string
JsonObject& currentup = root["sun_phase"]["sunrise"];
String h_u = currentup["hour"]; // Extract local Sunrise hour
h_up=String(h_u);
String m_u = currentup["minute"]; // Extract local Sunrise minute
m_up=String(m_u);
JsonObject& currentset = root["sun_phase"]["sunset"];
String h_s = currentset["hour"]; // Extract local Sunrise hour
h_set=String(h_s);
String m_s = currentset["minute"]; // Extract local Sunrise minute
m_set=String(m_s);
return true; // All conversions worked, return True
}
【Arduino 动手做】ESP32 和 Nextion 的原子钟和天气
【Arduino 动手做】ESP32 和 Nextion 的原子钟和天气项目链接：https://www.hackster.io/M-V-P/atomic-clock-and-weather-with-esp32-and-nextion-8eaea7
项目作者：MVP
项目参考：http://www.plastibots.com/index.php/2017/01/03/wiot-2-weather-station-nextion-tft-with-esp8266/
项目代码：https://www.hackster.io/code_files/185702/download
https://hacksterio.s3.amazonaws.com/uploads/attachments/401051/digital_clock-weather.HMI
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