Maduino Lora Radio (915M)

[iaomari93]

hello, Im trying to use Maduino Lora Radio (915M) with chripStack and mikrotik WAP LoRa9 gateway ,us 915 sub1 and I’m facing a few problems with it.

I’m trying the ttn_abp example from MCCI lorawan lmic lib v3.2.0. I can see the Unconfirmed Data Up and Unconfirmed Data Down in the gateway traffic page.

from the arduino serial monitor Im getting : Starting 9654: EV_TXSTART Packet queued 139471: EV_TXCOMPLETE (includes waiting for RX windows) 3890090: EV_TXSTART Packet queued 4019924: EV_TXCOMPLETE (includes waiting for RX windows) …

I tried both of thus pin mapping: // Pin mapping const lmic_pinmap lmic_pins = { .nss = 10, .rxtx = LMIC_UNUSED_PIN, .rst = 9, .dio = {2, 6, LMIC_UNUSED_PIN}, };

and : // Pin mapping const lmic_pinmap lmic_pins = { .nss = 10, .rxtx = LMIC_UNUSED_PIN, .rst = 9, .dio = {2, 6, 7}, };

and for both of them I’m not getting the message back from the gateway. I have been trying for a long time. I really appreciate if anyone know what could the problem be.

[iaomari93]

it still not working, now I'm trying otaa example code with the same setup. in the gateway side I can see pairs of join-request and join-accept. but from the serial monitor is stuck in this loop

Starting Packet queued 2332: EV_JOINING 2892: EV_TXSTART 408007: EV_JOIN_TXCOMPLETE: no JoinAccept 433054: EV_TXSTART 816867: EV_JOIN_TXCOMPLETE: no JoinAccept 826228: EV_TXSTART 1231352: EV_JOIN_TXCOMPLETE: no JoinAccept 1265829: EV_TXSTART 1649646: EV_JOIN_TXCOMPLETE: no JoinAccept 1720815: EV_TXSTART 2125945: EV_JOIN_TXCOMPLETE: no JoinAccept 2184518: EV_TXSTART 2568336: EV_JOIN_TXCOMPLETE: no JoinAccept 3192361: EV_TXSTART 3597491: EV_JOIN_TXCOMPLETE: no JoinAccept 3603107: EV_TXSTART 3986924: EV_JOIN_TXCOMPLETE: no JoinAccept 4566180: EV_TXSTART 4971310: EV_JOIN_TXCOMPLETE: no JoinAccept 5003058: EV_TXSTART 5386875: EV_JOIN_TXCOMPLETE: no JoinAccept 6121246: EV_TXSTART 6526376: EV_JOIN_TXCOMPLETE: no JoinAccept 6530296: EV_TXSTART 6914115: EV_JOIN_TXCOMPLETE: no JoinAccept 7448166: EV_TXSTART 7853297: EV_JOIN_TXCOMPLETE: no JoinAccept 7855732: EV_TXSTART 8239552: EV_JOIN_TXCOMPLETE: no JoinAccept 9105023: EV_TXSTART 9510155: EV_JOIN_TXCOMPLETE: no JoinAccept 9544384: EV_TXSTART 9928202: EV_JOIN_TXCOMPLETE: no JoinAccept 9928306: EV_JOIN_FAILED 10777321: EV_TXSTART 11182459: EV_JOIN_TXCOMPLETE: no JoinAccept 11185006: EV_TXSTART . . .

thank you omari

[terrillmoore]

I suggest you first use two boards with the raw example. Get that working and confirm receive operation.

Then use the compliance sketch (without any application logic) and see if able to join and send messages.

Downlink problems are always timing related.

Also, current version is 3.3. Is there a reason not to use that?

Best regards, --Terry

[codearranger]

@iaomari93 Did you ever get this working? I'm having the same issues.

const lmic_pinmap lmic_pins = { .nss = 10, .rxtx = LMIC_UNUSED_PIN, .rst = 9, .dio = {2, 6, 7}, };

This is configuration is right and it works with raw.

[iaomari93]

@terrillmoore, thank you for the suggestion. it was indeed a timing related issue.

@joecryptotoo, you are right, the configuration is right :). my problem was with the configuration file of the NS that I used. what NS you are using? what frequency plan? gateway?

[paulcastor30]

@iaomari93 have you got this problem solved? i am facing the same issue.

[terrillmoore]

All:

1. ChirpStack is substantially configurable, and when I tested, I found it was not right "out of the box" for 915. I had no big problem because I had lots of experience with TTN and the LMIC, but I think it is not transparent if you're just getting started. Please test with a network that you don't have to configure, like TTN, before testing with ChirpStack.

2. ABP seems simpler, but in fact is also an advanced option (because you have to understand and correctly enter all the network options that are automatically entered for you by the network when you use OTAA).

To bring up, please:

1. Test OTAA with TTN and make sure it works (and that you understand what's going on)
2. Then try OTAA with ChirpStack
3. Only then, try ABP (with TTN first, please!)
4. Then finally try ABP with ChirpStack

There are too many knobs on ChirpStack; unless you have verified hardware and some network experience, it's not the right place to start. Any gateway that works with ChirpStack can trivially work with TTN: so use that first, then convert.