Hi All. This post is for ask if somebody has problemes with watchdog timer in ESP8266 when use Blynk library. I only use another library, SimpleTimer. Sometimes the sketchs works perfectly for long time, but if I do a small modification it will start a secuence of whatchdog resets. Return for the first sketch is not the solution. I think is not a power problem. My suspect is watchdog but there isn’t information about it. Are there somebody with the same problem?
Thanks.
Jaume Nogues
rPrim Tech School
hi Jaume, sorry but without seeing your sketch we may as well take up jobs as clairvoyants?
Here is my code with resets. I need put ESP.wdtEnable(WDTO_8S);?
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <SimpleTimer.h> // here is the SimpleTimer library
char auth[] = "myToken";
void setup()
{
Serial.begin(115200);
Serial.println("Start..");
Blynk.begin(auth, "ssid", "pass");//servidor Blynk
}
void loop()
{
Blynk.run();
}
where is the rest of your code?
This sketch works for control an output with a button. I think than the sketch or blynk library are not the problem.
But if I play with other sketchs and I return to this sketch it starts to resets by wdt. Sometimes if I add a ESP.wdtEnable function the problem is solved, but sometimes no. I tested in 4 diferents boards. I think is a wdt configuration problem but I can’t find god information about the use of wdt. I ask to the community if you are using simple sketchs working fine, without resets problems. I’m shure. Is not a power supply problem.
If somebody could share a 100% free errors sample sketch I’m agree.
But I would like if another blynkers has the same problem with nodeMCU or others ESP boards.
OK, so the rest of the code is a secret? no worries…
FYI - i have seven different Blynk/ESP8266 projects with many 1000’s of lines of code and no wdt reset issues.
NO! No secrets! Here is all my code.
/**************************************************************
* Blynk is a platform with iOS and Android apps to control
* Arduino, Raspberry Pi and the likes over the Internet.
* You can easily build graphic interfaces for all your
* projects by simply dragging and dropping widgets.
*
* Downloads, docs, tutorials: http://www.blynk.cc
* Blynk community: http://community.blynk.cc
* Social networks: http://www.fb.com/blynkapp
* http://twitter.com/blynk_app
*
* Blynk library is licensed under MIT license
* This example code is in public domain.
*
**************************************************************
* This example runs directly on ESP8266 chip.
*
* You need to install this for ESP8266 development:
* https://github.com/esp8266/Arduino
*
* Please be sure to select the right ESP8266 module
* in the Tools -> Board menu!
*
* Change WiFi ssid, pass, and Blynk auth token to run :)
*
**************************************************************/
#define BLYNK_PRINT Serial // Comment this out to disable prints and save space
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <SimpleTimer.h> // here is the SimpleTimer library
#include <DHT.h> //adafruit
#include <Adafruit_NeoPixel.h>
#include <Servo.h>
#define PIN 10
#define NUMPIXELS 8
#define DHTPIN 9
//#define DHTTYPE DHT22 // DHT 22 (AM2302)
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE, 15);
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
Servo myservo; // create servo object to control a servo
SimpleTimer timer; // Create a Timer object called "timer"!
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "myToken";
boolean state4=0;
boolean state5=0;
boolean state16=0;
boolean state14=0;
boolean state12=0;
boolean prevState14=0;
boolean prevState12=0;
boolean prevState4=0;
boolean prevState5=0;
int dimmer=0;
int red=0;
int green=0;
int blue=0;
byte servoPosition=90;
int clicks=0;
void setup()
{
Serial.begin(115200);
Serial.println("Comencem..");
Blynk.begin(auth, "SSID, "pass");
pinMode(5, INPUT);
pinMode(4, INPUT);
pinMode(14, INPUT);
pinMode(12, INPUT);
pinMode(0,OUTPUT);
pinMode(2,OUTPUT);
pinMode(13,OUTPUT);
pinMode(15,OUTPUT);
pinMode(16,OUTPUT);//blue led onboard
digitalWrite(0,HIGH);
digitalWrite(2,HIGH);
digitalWrite(13,LOW);
digitalWrite(15,LOW);
digitalWrite(16,HIGH);
timer.setInterval(300L, alive);
timer.setInterval(60000L, publishMillis);
timer.setInterval(60000L, readDHT);
timer.setInterval(10000L, refreshA0);
pixels.begin(); // This initializes the NeoPixel library.
pixels.show(); // Initialize all pixels to 'off'
myservo.attach(13);
myservo.write(servoPosition);
}
void loop()
{
Blynk.run();
timer.run(); // SimpleTimer is working
}
void alive()
{
digitalWrite(16,state16);
state16=!state16;
state14=digitalRead(14);
if (prevState14==0 && state14==1)
{
bool temp=digitalRead(15);
if (temp){ digitalWrite(15,LOW); Blynk.virtualWrite(V13,0);}
if (!temp){ digitalWrite(15,HIGH); Blynk.virtualWrite(V13,255);}
prevState14=1;
}
if (prevState14==1 && state14==0)
{
prevState14=0;
}
state4=digitalRead(4);
if (state4!=prevState4)
{
if (state4==0) Blynk.virtualWrite(V4,0);
if (state4==1) Blynk.virtualWrite(V4,255);
clicks=clicks+1;
Blynk.virtualWrite(V21,clicks);
}
prevState4=state4;
state5=digitalRead(5);
if (state5!=prevState5)
{
if (state5==0) Blynk.virtualWrite(V5,0);
if (state5==1) Blynk.virtualWrite(V5,255);
}
prevState5=state5;
state12=digitalRead(12);
if (state12!=prevState12)
{
if (state12==0) Blynk.virtualWrite(V20,0);
if (state12==1) Blynk.virtualWrite(V20,255);
}
prevState12=state12;
}
void publishMillis()
{
unsigned long m=millis()/60000L;
Blynk.virtualWrite(V15,m);
Serial.println(m);
}
void readDHT()
{
float h = dht.readHumidity();
// Read temperature as Celsius (the default)
float t = dht.readTemperature();
// Check if any reads failed and exit early (to try again).
if (isnan(h) || isnan(t)) {
Serial.println("Failed to read from DHT sensor!");
return;
}
Serial.print("Humidity: ");
Serial.print(h);
Serial.print(" %\t");
Serial.print("Temperature: ");
Serial.print(t);
Serial.print(" ºC ");
Blynk.virtualWrite(V10,t);
Blynk.virtualWrite(V11,h);
}
void refreshA0()
{
Blynk.virtualWrite(V0, analogRead(0));
}
BLYNK_WRITE(V12)
{
int i = param.asInt();
boolean kk=digitalRead(15);
if (i==1 && kk==0) {digitalWrite(15,HIGH); Blynk.virtualWrite(V13,255);}
if (i==1 && kk==1) {digitalWrite(15,LOW); Blynk.virtualWrite(V13,0);}
}
BLYNK_WRITE(V16)
{
dimmer = param[0].asInt();
Serial.println(dimmer);
for(int i=0;i<NUMPIXELS;i++)
{
pixels.setPixelColor(i, pixels.Color(red*dimmer/100,green*dimmer/100,blue*dimmer/100));
pixels.show();
}
}
BLYNK_WRITE(V17)
{
red = param[0].asInt();
green = param[1].asInt();
blue = param[2].asInt();
//red=(red*dimmer)/100; green=(green*dimmer)/100; blue=(blue*dimmer)/100;
for(int i=0;i<NUMPIXELS;i++)
{
pixels.setPixelColor(i, pixels.Color(red*dimmer/100,green*dimmer/100,blue*dimmer/100));
pixels.show();
}
}
BLYNK_WRITE(V14)
{
servoPosition = param[0].asInt();
myservo.write(servoPosition);
}
BLYNK_CONNECTED() {
Blynk.syncAll();
Serial.println(".");
}running alive every 300 milliseconds?
you might need to look up “flooding”
Alive only check real buttons in the board and toggle a onboard led. If there isn’t changes no communication with server.
This sketchs sometimes works for weeks!. But If I play with wdt when I return to this sketch don’t work!! I want understand why. Why the same robust sketch stops to be robust.
i have no idea what this means?
If I load another no blynk sketch with wdt funciona and later return to a blynk sketch it don’t work.
wow, that sounds really weird!!
i actually only use ESP8266-12’s not NodeMCU…
Solved!! If I add in setup()
ESP.wdtDisable();
ESP.wdtEnable(WDTO_8S);
and in loop()
ESP.wdtFeed();
The resets by whatchdog STOPS!!
3 Likes
That’s super! Well done!
I’m sure that’s going to help others too…
Thaks a lot, man!! Honestly, I dont know what it does, but it definitely saved my life. Thanks again!
Thank you, saved me a lot of agony.
Hey guys I have added give code to setup and loop but still I get error in serial terminaly :
Connecting to Tenda_5F19A8
Soft WDT reset
ctx: cont
sp: 3ffef4e0 end: 3ffef6f0 offset: 01b
stack>>>
3ffef6a0: 3ffefffc 402020a8 3ffee608 3ffee6c4
3ffef6b0: 3ffe8350 3ffee514 3ffee608 40201c8f
3ffef6c0: feefeffe feefeffe feefeffe feefeffe
3ffef6d0: 3fffdad0 00000000 3ffee6bc 40203390
3ffef6e0: feefeffe feefeffe 3ffee6d0 40100718
stack<<<
ets Jan 8 2013,rst cause:2, boot mode:(3,2)
load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
v09f0c112
~ld
�
Please help me.
Thank you…
I solved my resets without using gpio9 and gpio10 in my nodeMCU.
Jaume
1 Like
@Hemang_Joshi If you still need assistance, please create a new topic with details of your specific issue, thank you.