My IoT node based on SX1276 is sending the Join Request to my Gateway based on SX1301 and SX1257 (RAK2245 board). I see the Class A IoT node spitting the message saying that it is sending the Join request. However I am not seeing the Join request at the concentrator. Is there some special debug I need to enable to see the packets received by the concentrator?
I am using the gateway supplied by SemTech at https://github.com/lorabasics/basicstation.
Any help is appreciated.
thanks
Sree
Hi @sgodey,
I would advice you flash the following firmware.
https://downloads.rakwireless.com/en/LoRa/RAK2245-Pi-HAT/Firmware/
Instruction manual for doing so:
https://downloads.rakwireless.com/en/LoRa/RAK2245-Pi-HAT/Application-Notes/
Regards
Vladislav
Hi Vladislav:
Once I flash the OS image and I run
%>sudo gateway-config
What should I set? I have my own LoRa Server in my own LAN/WAN. I should just be setting the Channel Plan? Will this update the firmware?
thanks
Sree
Hi @sgodey
Which LoRa Server are you using? Is it loraserver.io or other LoRa Server?
If your own LoRa Server is loraserver.io, you can have a look at the document which @Hobo has mentioned. In that document, the 6.2.2 section has introduced how to configure your LoRa Gateway to connect with a loraserver.
In the picture 3, you should fill it with your own LoRa Server’s IP address.
If your own LoRa Server is other LoRa Server, you can do as follow:
Choose the item 3 to open the configuration file, then you can see some contents as follow:
Hi Fomi:
I have a simple home grown Lora Server based on Node.js.
thanks
Sreekanth
I have run a radio calibration test provided by libloragw library. Below is the output. Something seems to be wrong in my RF settings. Can someone help …
pi@raspberrypi:~/deps/lgw/platform-rpi/libloragw $ ./test_loragw_cal -a 925.1 -b 923.3 -r 1257 -n 2
Library version information: Version: 5.0.1;
Radio type: 2
Radio A frequency: 925.100000 MHz
Radio B frequency: 923.300000 MHz
Number of calibration iterations: 2
Calibration command: brd: 0, chip: 1257, dac: 3
Rx A IQ mismatch: Amp: -9 Phi: 15 Rej: 51 dB Status: 143 | Debug: Rej: 56 dB Lna: 1 BB: 15 Dec: 7
Rx A IQ mismatch: Amp: -9 Phi: 14 Rej: 53 dB Status: 143 | Debug: Rej: 64 dB Lna: 1 BB: 15 Dec: 7
Rx B IQ mismatch: Amp: 8 Phi: 8 Rej: 55 dB Status: 151 | Debug: Rej: 58 dB Lna: 1 BB: 15 Dec: 7
Rx B IQ mismatch: Amp: 8 Phi: 8 Rej: 53 dB Status: 151 | Debug: Rej: 63 dB Lna: 1 BB: 15 Dec: 7
Tx A calibration bypassed
Tx B calibration bypassed
Rx A IQ mismatch calibration statistics on 2 iterations (min, max):
Amp: -9 -9 Phi: 14 15 Rej: 51 53 dB (capt.: 56 64 dB)
Rx B IQ mismatch calibration statistics on 2 iterations (min, max):
Amp: 8 8 Phi: 8 8 Rej: 53 55 dB (capt.: 58 63 dB)
End of radio calibration test
Below is calibration log which report problem with radio A for image rejection and radio B for TX imbalance.
Can RAK experts comment on this? Is my concentrator bad?
pi@raspberrypi:~/deps/lgw/platform-rpi/libloragw $ ./test_loragw_cal -a 925.1 -b 923.3 -t 3 -r 1257 -n 10
Library version information: Version: 5.0.1;
Radio type: 2
Radio A frequency: 925.100000 MHz
Radio B frequency: 923.300000 MHz
Number of calibration iterations: 10
Calibration command: brd: 0, chip: 1257, dac: 3
lgw_connect:532: INFO: no FPGA detected or version not supported (v0)
Note: success connecting the concentrator
lgw_setup_sx125x:407: Note: SX125x #0 version register returned 0x21
lgw_setup_sx125x:415: Note: SX125x #0 clock output disabled
lgw_setup_sx125x:469: Note: SX125x #0 PLL start (attempt 1)
lgw_setup_sx125x:407: Note: SX125x #1 version register returned 0x21
lgw_setup_sx125x:412: Note: SX125x #1 clock output enabled
lgw_setup_sx125x:473: Note: SX125x #1 kept in standby mode
Rx A IQ mismatch: Amp: -6 Phi: 18 Rej: 50 dB Status: 143 | Debug: Rej: 46 dB Lna: 1 BB: 15 Dec: 7
WARNING: problem in calibration of radio A for image rejection
Rx A IQ mismatch: Amp: -10 Phi: 15 Rej: 48 dB Status: 135 | Debug: Rej: 45 dB Lna: 1 BB: 15 Dec: 7
WARNING: problem in calibration of radio A for image rejection
Rx A IQ mismatch: Amp: -11 Phi: 13 Rej: 48 dB Status: 135 | Debug: Rej: 46 dB Lna: 1 BB: 15 Dec: 7
Rx A IQ mismatch: Amp: -9 Phi: 15 Rej: 51 dB Status: 143 | Debug: Rej: 44 dB Lna: 1 BB: 15 Dec: 7
WARNING: problem in calibration of radio A for image rejection
.
.
.
Tx B DC offset I : 90 26 -86 123 -49 84 -46 -24
Tx B DC offset Q : 82 -84 37 -106 -20 -14 125 39
Tx B DC rejection: 28 26 25 22 25 20 25 27
Tx B DC debug BB : 15 15 15 15 15 15 15 15
Tx B DC debug Dec: 7 7 7 7 7 7 7 7
Tx B DC Status : 199
WARNING: problem in calibration of radio B for TX imbalance
Hi @sgodey
What are you using, Basic Station or RAK “station” 
.
Please download and install RAK software for RAK2245 from here RAK Git . Or download SD image from here RAK2245 SD.
And make the same tests.
Regards
Todor
Hi Todor:
Thanks for the reply. I still see Image rejection errors on RadioA and RadioB. What could be the problem?
BR,
Sreekanth
Hi @sgodey,
To summarize:
Is this the above correct ?
Regards
Vladislav
