[Renzo Mischianti]

Hi John,
It’s possible that I had continued the development of the library with an esp32, and so when the library grows, the memory of esp8266 It’s no more sufficient.
But I’m going to test and check these days, and I’ll give you more information.
Bye Renzo

[Renzo Mischianti]

Hi,
about this issue here you can find a possible solution
https://github.com/xreef/EByte_LoRa_E220_Series_Library/pull/11
It’s seems that there is an issue with software serial, but it’s very strange.
Even if the message say that the module working.
Bye Renzo

[Renzo Mischianti]

Hi Misio,
yes, I think It’s time for an upgraded version of It.
But I’m very very busy, I’d like to do some porting to micropython of my library and so on.
I need help 😛
Bye Renzo

[Renzo Mischianti]

Hi Giuseppe,
Data size not matching can be caused by wrong M0 M1 wiring or low power supply.
Bye Renzo

[Renzo Mischianti]

Hi Mayksuel,
the only thing you can put wrong It’s if you do a wrong configure of M0 and M1.
Bye Renzo

[Renzo Mischianti]

Hi,
I re-do all the specified test, and the library work correctly, the problem is born when you don’t set RSSI enabled on all devices, but only in one.
Bye Renzo

[Renzo Mischianti]

Hi Mark,
refer to the article, the documentation that is maintained is that.
PCF8575 i2c 16 bit digital I/O expander

The pcf8575 doesn’t have sufficient power to light 5mm led, use It to put GND to the Catode.
Bye Renzo

[Renzo Mischianti]

Hi Sebastian,
to manage additional await, you can put 1 to this variable.

Bye Renzo

[Renzo Mischianti]

Hi Sebastian,
to enable DEBUG uncomment this line.

An additional test is to enable automatic response by setting the value to ‘a’ at this line.

Bye Renzo

[Renzo Mischianti]

Hi mark,
I replicate the test with an esp32 dev kit v1 and a pcf8575 with 16 led, and It’s work without a problem, so if I can’t replicate your problem, I can only do some supposition to try to help.

For the scheme follow the site.
Bye Renzo

[Renzo Mischianti]

Hi,
It’s improbably that there is a compatibility problem, I think there is a mistake on the wiring or power supply to the LEDs.
Bye Renzo

[Renzo Mischianti]

Hi Mark,
I retest the library again, and It’s working ok.

Can you do an i2c scanner and paste the result here?

#include <Wire.h>

void setup()
{
  Wire.begin();

  Serial.begin(9600);
  Serial.println("\nI2C Scanner");
}

void loop()
{
  byte error, address;
  int nDevices;

  Serial.println("Scanning...");

  nDevices = 0;
  for(address = 1; address < 127; address++ )
  {
    // The i2c_scanner uses the return value of
    // the Write.endTransmisstion to see if
    // a device did acknowledge to the address.
    Wire.beginTransmission(address);
    error = Wire.endTransmission();

    if (error == 0)
    {
      Serial.print("I2C device found at address 0x");
      if (address<16)
        Serial.print("0");
      Serial.print(address,HEX);
      Serial.println("  !");

      nDevices++;
    }
    else if (error==4)
    {
      Serial.print("Unknow error at address 0x");
      if (address<16)
        Serial.print("0");
      Serial.println(address,HEX);
    }
  }
  if (nDevices == 0)
    Serial.println("No I2C devices found\n");
  else
    Serial.println("done\n");

  delay(5000);           // wait 5 seconds for next scan
}

you must have a this result

Scanning... 
I2C device found at address 0x20  !
done
 
Scanning... 
I2C device found at address 0x20  ! 
done
 
Scanning... 
I2C device found at address 0x20  ! 
done

Bye Renzo

[Renzo Mischianti]

Thanks for sharing George,
It’s very interesting, but I think we can get the same result by sending a binary structure like in this article.

Ebyte LoRa E220 device for Arduino, esp32 or esp8266: manage Wake On Radio and sends structured data – 5

It can be interesting to verify if It’s apply some compression system.
Bye Renzo

[Renzo Mischianti]

Hi RD,
as I already say, I think that doing a Gateway (to manage a limited number of clients) it’s very simple, and the fastest way is to do It.
If you need some help, ask without a problem.
Bye Renzo

[Renzo Mischianti]

Hi Aishwarya,
first of all, connect AUX pin to have real feedback.
Then pay attention to the power supply and ensure the wiring of M0 and M1 is correct.
Bye Renzo

[Author]

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