LoRa Basics MAC on Arduino 33 Nano

amintayebi · June 30, 2022, 4:50pm

Thanks, Yes I have connected the Dragino LoRa Shield to the Arduino Nano IOT33. Because I needed 256kb memory as arduino uno for me is few with 32kb mem.
1- I couldn’t find any one with clear scenario has connected nano IoT33 to TTN via any lora module (There are scenarios with arduino nano but not with nano IoT33). So where could be the problem?
2- My another doubt is I connected NSS (pin 10 in nano IoT33) to pin 10 in Dragino-Lora-sheild as I found out other guys done.
3- In my mind LMIC lib can’t work with nano IoT33 but works with arduino nano (as I saw scenarios arduino MKR 1300 has its specific lib for lorawan).

github.com

arduino-libraries/MKRWAN/blob/master/examples/LoraSendAndReceive/LoraSendAndReceive.ino

/*
  Lora Send And Receive
  This sketch demonstrates how to send and receive data with the MKR WAN 1300/1310 LoRa module.
  This example code is in the public domain.
*/

#include <MKRWAN.h>

LoRaModem modem;

// Uncomment if using the Murata chip as a module
// LoRaModem modem(Serial1);

#include "arduino_secrets.h"
// Please enter your sensitive data in the Secret tab or arduino_secrets.h
String appEui = SECRET_APP_EUI;
String appKey = SECRET_APP_KEY;

void setup() {
  // put your setup code here, to run once:

This file has been truncated. show original

//my Pin mapping is as follow:
const lmic_pinmap lmic_pins = {
.nss = 10,
.rxtx = LMIC_UNUSED_PIN,
.rst = 5,
.dio = {2, 3, LMIC_UNUSED_PIN},
};

amintayebi · July 1, 2022, 4:21pm

Good evening,
Is any one which could give advise? some body any body?

Jeff-UK · July 1, 2022, 5:03pm

I dont think this is a commonly used board for TTN forumites - the only instance of “Nano IOT33” in search pulls up this thread so there is every chance that the chance of a response from a user familiar with the board and your use case, who is also a Forumite, who also is actively reading all/most threads to then find this one and who spots your plea for help… and who is then willing to speak up may be limited… Hence no responce.

You may get generic advice and comments from other Forumites and even a few of the ‘expert’ or experienced users of other boards but as everyone here is a volunteer that may not happen.

Have you also tried asking on the Arduino/Manufacturers forum?

descartes · July 1, 2022, 5:24pm

The use of the Arduino IoT 33 isn’t a problem, it’s a problem with the inexplicable swap of the library being used to one that can only be used with the MKRWAN1300/1310 and a lack of patience, but absolutely mostly the first - why would the library for MRKWAN with a totally different chipset suddenly work? What was the thinking here?

Jeff-UK · July 1, 2022, 5:26pm

Or in my words

!!!

descartes · July 1, 2022, 9:37pm

But you know the rules, and so do I.

We aren’t allowed to know details, it’s like a game of 20 questions.

But full commitment’s what I’m thinking of.

So we can keep asking.

I’m never gonna give up, we don’t want to let anyone down.

Or run around and desert them.

amintayebi · July 4, 2022, 8:11am

So sorry. based on this page in forum I thought it could be possible to use LMIC lib with MKRWAN 1300: Arduino MKR WAN 1300 - #30 by Amedee

descartes · July 4, 2022, 8:56am

It is, if you really really know how to configure around the built-in LoRaWAN stack that’s already present on the Murata module - but why would you - you’ve got a top grade module with the official LoRaMAC on it.

But that’s not important, because you have a 33 Nano and you can not send AT commands to the Dragino board which is how the MKRWAN library works because there is not serial port on the board for the RFM95 radio because it doesn’t have a serial port.

Four days ago I said you were OK to use pins 2 & 3. You can use any pins you like that aren’t for the SPI (which also needs connecting). You could have had it running 3.5 days ago …

amintayebi · August 11, 2022, 11:56am

Good morning,
I have discovered a solution based on the information on another page of forum (Samd21 mini wired to rfm95 - #24 by Roelvdv) to use LMIC library (catena) to make a Lorawan node with Arduino NANO IoT 33 board. I saved some boards and a lot of time.
I am wondering how no one of helpers didn’t mention that page! Any way I am thankful for your support.
I put a video also next days in my youtube channel it could be helpful:
Make Lorawan node with SAMD microcontroller based boards using LMIC lorawan library - YouTube

Johan_Scheepers · August 11, 2022, 12:16pm

We need more helpers like you scouring the net and scraping up information - Thanks now you are also a helper -

descartes · August 11, 2022, 1:05pm

Apart from “the helpers”, all volunteers, not having an encyclopaedic memory of the forum, the reality is that wiring any Arduino supported board with enough Flash & RAM to an RFM95 is fully and completely documented many times on the MCCI LMIC and the LMIC-node github repros.

So having told you to crack on with the pins on the 30th June, you decided to conflate the IoT33 with the MKRWAN which you never explained.

Plus:

Plus you could have found that topic using the search back in June …