ESP8285 i2c Pins

Shadeyman · January 25, 2018, 11:55am

No, nothing …

Costas · January 25, 2018, 11:57am

Cut and paste this on top of your loop() and downwards. It could be a problem with Stream.

//////////////////////////////////////////////////////////////////
void loop()
{
  Blynk.run();
  timer.run(); // Initiates BlynkTimer
}

//////////////////////////////////////////////////////////////////




void readSensor()

{
   float temp(NAN), hum(NAN), pres(NAN);

   BME280::TempUnit tempUnit(BME280::TempUnit_Celsius);
   BME280::PresUnit presUnit(BME280::PresUnit_Pa);

   bme.read(pres, temp, hum, tempUnit, presUnit);

   Serial.print("Temp: ");
   Serial.print(temp);
   Serial.print("°"+ String(tempUnit == BME280::TempUnit_Celsius ? 'C' :'F'));
   Serial.print("\t\tHumidity: ");
   Serial.print(hum);
   Serial.print("% RH");
   Serial.print("\t\tPressure: ");
   Serial.print(pres);
   Serial.println("Pa");
   Blynk.virtualWrite(V1, pres/100.0);  // write pressure to V1 value display widget
   Blynk.virtualWrite(V2, temp);        // write temperature to V2 value display widget
   Blynk.virtualWrite(V3, hum);         // write humidity to V3 value display widget
   //delay(1000);
}

Shadeyman · January 25, 2018, 12:03pm

@Costas Managed to make things better by changing this:

timer.setInterval(3000L, readSensor); // every 3s

to this:

timer.setInterval(1000L, readSensor); // every 1s

Its on more than its off now …

Costas · January 25, 2018, 12:05pm

That’s not a fix and 3s is better than 1s for sensor reading. 1s is almost never needed.

Shadeyman · January 25, 2018, 12:08pm

No, still the same.

Costas · January 25, 2018, 12:15pm

Strange that the app is bad and no problems showing in Serial Monitor like reconnects etc.

Post a copy of the cloned QR code image.

Shadeyman · January 25, 2018, 12:21pm

Is it doing the same for you, on and off ?

Costas · January 25, 2018, 12:46pm

I am running your sketch with the super WeMos D1 Mini and a BME280 and it’s fine.

No disconnects here.

Only change I have is my circuit is wired up as:

Wire.begin(4, 5); // D2 and D1

Costas · January 25, 2018, 1:03pm

Try Wire.begin(4, 5); with pin connections to 10 and 13 respectively for SDA and SCL (on the 01M).

Shadeyman · January 25, 2018, 1:16pm

The only pins that work are 2, 15
Have tried 4, 5 and lots of others already.
I’m now trying a basic Blynk sketch to make sure the 8285 is ok.

Costas · January 25, 2018, 1:28pm

Do you mean physical pins 2 and 15 or GPIO 2 and 15?

Shadeyman · January 25, 2018, 1:30pm

@Costas
I’ve loaded a basic Bltnk sketch to the 8285 and its working fine so the problem must be in the sketch you made, any idea’s ?

Costas · January 25, 2018, 1:31pm

@Shadeyman what about this?

Maybe the IDE doesn’t do a pin translation for the ESP8285.

Shadeyman · January 25, 2018, 1:42pm

Sorry, should have been a bit more clear, GPIO 2 and 15.

Then wouldn’t that effect the basic sketch thats running now?

“Float” is that what holds the data until the next update? Could that be the cause?

Costas · January 25, 2018, 1:52pm

And you have the sensor connected to physical pins 14 and 6, right?

Basic sketch doesn’t have any digital pins so no.

No the data is held in 3 variables pres, temp and hum of data type float. Not an issue.

AFAIK Blynk doesn’t have an ESP8285 board and your QR was for a ESP8266. This might be the problem.

Gunner · January 25, 2018, 1:58pm

Since the App setting is only for Digital and Analog pin layout (as controlled directly from the App), just put this command in the sketch to disable that function in the library. Then you could technically use any device setting in the App… with vPins of course.

#define BLYNK_NO_BUILTIN

Costas · January 25, 2018, 2:12pm

Correct or not @Shadeyman ?

Shadeyman · January 25, 2018, 3:07pm

Sorry guys had to drop the wife off, she’s working tonight.

I think its the app on my phone?

I created a simple sketch with 6 vitual pins, loaded it onto the 8285 and altered the app on me phone to view all 6 pins.

The first three go on and off, the last three are as they should be, permanently on.

Here, see for your selves.

Shadeyman · January 25, 2018, 3:35pm

@Costas It was the Blynk app on my phone.
Your sketch works perfectly, the problem was with theBlynk Project in the app on my phone. I’ve completely deleted the project and quickly made another, your sketch works perfectly, so does this little 8285.