Don't show Offline status when ESP8266 in deep sleep

Need Help With My Project
1

Hello everyone

I am using the following sketch on ESP8266 which after reading from a sensor the abiental temperature and humidity sends them and then goes into deep sleep for 10 minutes.

#define BLYNK_PRINT Serial


#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>

#define DHTPIN D8

#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "xxxxxxxxx"
#define BLYNK_DEVICE_NAME "xxxxxxxxx"
#define BLYNK_AUTH_TOKEN "xxxxxxxxx"

//#define BLYNK_HEARTBEAT      605
//#define BLYNK_TIMEOUT_MS     600000UL



char auth[] = BLYNK_AUTH_TOKEN;

char ssid[] = "xxxxxxxxx";
char pass[] = "xxxxxxxxx";



#define DHTTYPE    DHT22     // DHT 22 (AM2302)


DHT_Unified dht(DHTPIN, DHTTYPE);


byte arduino_mac[] = { 0xDE, 0xED, 0xBA, 0xFE, 0xFE, 0xED };
IPAddress device_ip  (192, 168,   1,  81);
IPAddress dns_ip     (  192,   168,   1,   1);
IPAddress gateway_ip (192, 168,   1,   1);
IPAddress subnet_mask(255, 255, 255,   0);





void setup()
{
  Serial.begin(9600);

  Serial.println("wakeup");


  dht.begin();
  sensor_t sensor;
  dht.temperature().getSensor(&sensor);
  dht.humidity().getSensor(&sensor);

  WiFi.config(device_ip, gateway_ip, subnet_mask);
  WiFi.begin(ssid, pass);

  Blynk.config(auth, IPAddress(46,101,217,214), 80);    // blynk.cloud (invece di blynk-cloud.com)
  while (Blynk.connect() == false)
  {
	  Serial.println("not connected");
  }
}

void loop()
{


  Blynk.run();

  sensors_event_t event;
  dht.temperature().getEvent(&event);
  if (isnan(event.temperature))
  {
	  Serial.println(F("Error reading temperature!"));
  }
  else
  {
	  Blynk.virtualWrite(V0, event.temperature);
	  Serial.println("sending temperature on V0");

  }

  dht.humidity().getEvent(&event);
  if (isnan(event.relative_humidity))
  {
	  Serial.println(F("Error reading humidity!"));
  }
  else
  {
	  Blynk.virtualWrite(V1, event.relative_humidity);
	  Serial.println("sending humidity on V1");
  }
  Serial.println("deep sleep");
  ESP.deepSleep(600e6);
}

Everything works correctly, however, I was asking if it was possible to notify the “Offline” status on the app only after 10-15 minutes ESP8266 is offline since last values updates.

image
image738×1600 69.4 KB

Thank you

2

Have you tried changing the Offline Ignore Period in the Template > Info > Edit screen ?

Pete.

3

Hi Pete,

i’ve tried with this but it show me “Offline” anyway after some minutes

image

4

And what happens if you uncomment this line?

Pete.

5

The same.

“Hearthbeat” and “offline ignore period” already tried and doesnt work in my case.

6

you can use this option to set LED “online / offline” and control it with an automation timer for 11-15 minutes

7

Hi Nikolai

What option are you referring? Hearthbeat or offline ignore period? I’ve used both but offline icon is always shown.

I’ll give them a try and write here for a feedback.

I’ve never used automation. I’ll take a look to documentation to understand how it can works on online/offline status.

Thank you

8

I did a further test with another ESP8266 module cloning the previous template and I get the same problem

Basically I find that even setting an offline ignore period of more than 10 minutes, both on the blynk console and the app I get the notification that the device is offline after a few minutes the ESP goes in deep sleep mode.

I’ve set an offline ignore period of 15 minutes

image
image1293×563 37.3 KB

Sketch used:

#define BLYNK_PRINT Serial



#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>

#define DHTPIN D2

#define BLYNK_TEMPLATE_ID "xxxx"
#define BLYNK_DEVICE_NAME "ESP8266 DHT11"
#define BLYNK_AUTH_TOKEN "xxxxxxxx"
char auth[] = BLYNK_AUTH_TOKEN;

#undef BLYNK_HEARTBEAT
#define BLYNK_HEARTBEAT      610 // seconds

char ssid[] = "xxxx";
char pass[] = "xxxxxx";


#define DHTTYPE    DHT11     // DHT 11

DHT_Unified dht(DHTPIN, DHTTYPE);


// Mac address should be different for each device in your LAN
byte arduino_mac[] = { 0xFA, 0xBB, 0xBA, 0xFE, 0xFE, 0xED };
IPAddress device_ip  (192, 168,   1,  82);
IPAddress dns_ip     (  192,   168,   1,   1);
IPAddress gateway_ip (192, 168,   1,   1);
IPAddress subnet_mask(255, 255, 255,   0);

void setup()
{

  Serial.begin(9600);

  dht.begin();
  sensor_t sensor;
  dht.temperature().getSensor(&sensor);
  dht.humidity().getSensor(&sensor);

  WiFi.config(device_ip, gateway_ip, subnet_mask);
  WiFi.begin(ssid, pass);

  Blynk.config(auth, IPAddress(46,101,217,214), 80);    // blynk.cloud (invece di blynk-cloud.com)
  while (Blynk.connect() == false)
  {
	  Serial.println("not connected");

  }
}

void loop()
{
  Blynk.run();

  sensors_event_t event;
  dht.temperature().getEvent(&event);
  if (isnan(event.temperature))
  {
	  Serial.println(F("Error reading temperature!"));
   }
  else
  {
	  Blynk.virtualWrite(V0, event.temperature);

  }

  dht.humidity().getEvent(&event);
  if (isnan(event.relative_humidity))
  {
	  Serial.println(F("Error reading humidity!"));

  }
  else
  {
	  Blynk.virtualWrite(V1, event.relative_humidity);

  }
  ESP.deepSleep(6e8); //600s = 10minutes
}

This is what i get from my console

image
image1305×575 37.2 KB

Please note that there is some discordance between the various status indications in the console.
I think it’s strange or not? Is there something I’m doing wrong?

Thank you