hi there
i took a piece of code someone wrote to display date from server on OLED display
i added blynk project and i’m getting a messeges all the time that my project went offline
need your help
thx
my code::
// simplestesp8266clock.ino
//
// Libraries needed:
// Time.h & TimeLib.h: https://github.com/PaulStoffregen/Time
// Timezone.h: https://github.com/JChristensen/Timezone
// SSD1306.h & SSD1306Wire.h: https://github.com/squix78/esp8266-oled-ssd1306
// NTPClient.h: https://github.com/arduino-libraries/NTPClient
// ESP8266WiFi.h & WifiUDP.h: https://github.com/ekstrand/ESP8266wifi
//
// 128x64 OLED pinout:
// GND goes to ground
// Vin goes to 3.3V
// Data to I2C SDA (GPIO 4)
// Clk to I2C SCL (GPIO 5)
// OLED I2C ADDRESS 0x3d
#include <ESP8266WiFi.h>
#include <WifiUDP.h>
#include <String.h>
#include <Wire.h>
#include <SSD1306.h>
#include <SSD1306Wire.h>
#include <NTPClient.h>
#include <Time.h>
#include <TimeLib.h>
#include <Timezone.h>
#include <BlynkSimpleEsp8266.h>
// Define NTP properties
#define NTP_OFFSET 60 * 60 // In seconds
#define NTP_INTERVAL 60 * 1000 // In miliseconds
#define NTP_ADDRESS "ca.pool.ntp.org" // change this to whatever pool is closest (see ntp.org)
// Set up the NTP UDP client
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, NTP_ADDRESS, NTP_OFFSET, NTP_INTERVAL);
// Create a display object
SSD1306 display(0x3d, 4, 5); //0x3d for the Adafruit 1.3" OLED, 0x3C being the usual address of the OLED
char auth[] = "XXXXXXX";
const char ssid[] = "Rooms"; // insert your own ssid
const char password[] = "XXXXXX";
const char pass[] = "XXXXXX";// and password
String date;
String t;
const char * days[] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"} ;
const char * months[] = {"Jan", "Feb", "Mar", "Apr", "May", "June", "July", "Aug", "Sep", "Oct", "Nov", "Dec"} ;
const char * ampm[] = {"AM", "PM"} ;
//const int ledPin = 0;// the number of the LED pin
BLYNK_WRITE(GP15)
{
// You'll get HIGH/1 at startTime and LOW/0 at stopTime.
// this method will be triggered every day
// until you remove widget or stop project or
// clean stop/start fields of widget
//Serial.print("Got a value: ");
//Serial.println(param.asStr());
}
void setup ()
{
Serial.begin(9600); // most ESP-01's use 115200 but this could vary
//pinMode(ledPin, OUTPUT);
//digitalWrite(ledPin, LOW);
timeClient.begin(); // Start the NTP UDP client
Wire.pins(4, 5); // Start the OLED with GPIO 0 and 2 on ESP-01
Wire.begin(4, 5); // 4=sda, 2=scl
display.init();
display.flipScreenVertically();
// Connect to wifi
Serial.println("");
Serial.print("Connecting to ");
Serial.print(ssid);
display.drawString(0, 14, "Connecting to Wifi...");
display.display();
WiFi.begin(ssid, password);
Blynk.begin(auth, ssid, pass);
while (WiFi.status() != WL_CONNECTED)
{
//delay(50);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to WiFi at ");
Serial.print(WiFi.localIP());
Serial.println("");
display.drawString(0, 28, "Connected.");
display.display();
//delay(50);
}
void loop()
{
//Blynk.run();
if (WiFi.status() == WL_CONNECTED) //Check WiFi connection status
{
date = ""; // clear the variables
t = "";
// update the NTP client and get the UNIX UTC timestamp
timeClient.update();
unsigned long epochTime = timeClient.getEpochTime();
// convert received time stamp to time_t object
time_t local, utc;
utc = epochTime;
// Then convert the UTC UNIX timestamp to local time
TimeChangeRule usEDT = {"EDT", Second, Sun, Mar, 2, +120}; //UTC - 5 hours - change this as needed
TimeChangeRule usEST = {"EST", First, Sun, Nov, 2, +180}; //UTC - 6 hours - change this as needed
Timezone usEastern(usEDT, usEST);
local = usEastern.toLocal(utc);
// now format the Time variables into strings with proper names for month, day etc
date += days[weekday(local)-1];
date += ", ";
date += months[month(local)-1];
date += " ";
date += day(local);
date += ", ";
date += year(local);
// format the time to 12-hour format with AM/PM and no seconds
t += hourFormat12(local);
t += ":";
if(minute(local) < 10) // add a zero if minute is under 10
t += "0";
t += minute(local);
t += " ";
t += ampm[isPM(local)];
// Display the date and time
Serial.println("");
Serial.print("Local date: ");
Serial.print(date);
Serial.println("");
Serial.print("Local time: ");
Serial.print(t);
// print the date and time on the OLED
display.clear();
display.setTextAlignment(TEXT_ALIGN_CENTER);
display.setFont(ArialMT_Plain_24);
display.drawStringMaxWidth(64, 12, 128, t);
display.setFont(ArialMT_Plain_10);
display.drawStringMaxWidth(64, 38, 128, date);
display.display();
}
else // attempt to connect to wifi again if disconnected
{
display.clear();
display.drawString(0, 10, "Connecting to Wifi...");
display.display();
WiFi.begin(ssid, password);
display.drawString(0, 24, "Connected.");
display.display();
//delay(50);
}
Blynk.run();
//delay(10); //Send a request to update every 10 sec (= 10,000 ms)
}