Problems with Serial1 Leonardo and LoRa shield

Projects Networking, Protocols, and Devices
1

I am mounting a LoRaWan node with a Wisnode-Lora module (RAK811) and managed by a Leonardo R3 based on this firmware: [WisnodeLoRa-Github](http://https: //github.com/xoseperez/wisnode-lora-downlink)
The problem comes because the Wisnode module , I believe, does not receive the data sent by serial1 from Leonardo or does not receive it correctly.

The question: Is there any command that "pings" via serial1?

thing that I have done:

  • Check the jumpers and Q's so Leonardo's TTL level adapts to 3v3 of the module
  • Check the physical integrity of the pins and tracks to check that the "way" is Ok (via oscilloscope)
  • Check that the module works well: sending the AT commands via PC serial, responding correctly
  • Check that the sketch compiles correctly and what it does (except for the correct sending of the
    commands at via serial1) the actions it must

I do not know if it is because the port is not well initialized, because the library is not correct... I am a bit lost...

Thanks in advance and greetings

2

You need to fix your link

When I eventually did get to the Github page it seems that the project is designed for a Leonardo

If you are having a problem with your program then please post the program.

And please post your program using the code button </> so it looks like this. See How to use the Forum. It makes it much easier for people to help you

...R

3

And you have not provided any details of what the problem is ?

4

Robin2:
...it seems that the project is designed for a Leonardo...

And I use a Leonardo board (but also I tested in aATMega 256 and doesnt work)

Robin2:
If you are having a problem with your program...

The program could be reduced as simple as:

void setup() { 

Serial1.begin(115200);
Serial.begin(115200); 
} 


String response = ""; 


void loop() { 
sendCommand("at+version\r\n");
delay(3000); 

}

void sendCommand(String atComm){ 
response = ""; 
Serial1.print(atComm); 
while(Serial1.available()){ 
  char ch = Serial1.read(); 
  response += ch; 
} 
Serial.println(response); 
}

The data serial arrives to the RAK811 with the 3v3 adequate level, but seems there is a problema with bps , I dont know (In other fórum someone did it work with a 110000 baudrate...)

Wisnode-Github

srnet:
And you have not provided any details of what the problem is ?

It is described in my post:

covrita:
The problem comes because the Wisnode module , I believe, does not receive the data sent by serial1 from Leonardo or does not receive it adequately.

The module, I suppouse, does not recognize, bps, characters... I have read others fórums and seem to be a common problema (arduino-rak811)

5

It was an electrical problem. Level sifhters included in Lora board couldnt work at the preset baudrate and characters received were not same as sended.
But I suppose people here, only know about code, sorry. I have set up baudrate to the minimun and now it works

thanks anyway! :slight_smile: