Playing with some site survey code, need some basic help

1

Playing with some site survey code on the M5Stack with a compatible LoRa radio.

I’m super close to things working, however having trouble getting the TTN information entered into the libraries.

 // void setId(char *DevAddr, char *DevEUI, char *AppEUI);
  lora.setId("device-name-here?", "EasyFoundonTTN", "EasyFoundonTTN");
  // setKey(char *NwkSKey, char *AppSKey, char *AppKey);
  lora.setKey("network-key-here?", "ttn-account-v2.7.....", "EasyFoundonTTN");

Having trouble locating the:

  • DevAddr – is this just the device name?
  • NwkSKey – TTN Network Security Key?
2

On your TTN console, in your application and then go to your device setting (register a new one of both if you haven’t done so already), if you change the Activation Method to ABP, you will be provided with those details

3

Weird… TNN only shows an activation method of OTAA available?

4

you may be looking at the Overview tab, top right, change it to Settings, then you will see where to change it

5

LOL… thanks :slight_smile: That was it.

Trying to get the device online, should have a gateway within range (US)

lora.setDeciveMode(LWABP);
//lora.setDeciveMode(LWOTAA);
lora.setDataRate(DR0, US915HYBRID);
lora.setAdaptiveDataRate(true);

lora.setChannel(0, 903.08);
lora.setChannel(1, 905.24);
lora.setChannel(2, 907.40);
lora.setChannel(3, 909.56);
lora.setChannel(4, 911.72);
lora.setChannel(5, 913.88);
lora.setChannel(6, 916.04);
lora.setChannel(7, 918.20);
lora.setChannel(8, 920.36);
lora.setChannel(9, 922.52);
lora.setChannel(10, 924.68);
lora.setChannel(11, 926.84);
lora.setChannel(12, 915.00);

//lora.setReceiceWindowFirst(0, 902.3);
lora.setReceiceWindowSecond(923.3, DR8);

Anything look too wrong there?

6

I am in Aus so use AU915 - but those frequencies don’t look correct for a TTN gateway setup to use US915

Check out these and try to get a channel plan setup that match
https://www.thethingsnetwork.org/docs/lorawan/frequency-plans.html#us902-928