DRAGINO problems and solutions topic part 1

[HaSch]

@HaSch

Has anyone tried using this code: GitHub - bokse001/dual_chan_pkt_fwd at dual_chan_pkt_fwd_up_down ont their Dragino Lora GPS hat? It says it can allow downlink on the hat and can be compatible with TTN. Here is the blog by the developer too: The Things Network dual-channel up&downlink gateway – Hans Boksem

Yes, I tried but it isn’t working on Dragino LoRa GPS hat. I contacted the developer and spoke to him but for now he hasn’t the time to look after the code. Maybe it helps if you contact him, too.

The dual channel code is only working with Uputronics board with 2 mounted RFM95 modules. If only 1 module is soldered, you can make a little change to the code to get it work.

Now, I’ve got the code working. The point is that in global_conf.json you have to set pin_rst to 3 instead of 0 as in README.md. Pins for Dragino hat are:

"pin_nss": 6,
"pin_dio0": 7,
"pin_nss_2": 6,
"pin_dio0_2": 7,
"pin_rst": 3,

The other pins can remain untouched.

As Dragino hat has only one RFM95 module you will get a single channel gateway, not a dual channel gateway (with up- and downlink). Therefore you have to comment out line 552 in LoraModem.c:

// Die("Unrecognized transceiver");

After that the GW will work fine.