RAK2245 + Rock960 96Board

LPWAN Developer Gateways / Concentrators RAK2245 / RAK2243
1

I am working on getting the combination of the RAK2245 and the 96board ROCK960 operational.

/packet_forwarder/lora_pkt_fwd# ./lora_pkt_fwd
ERROR: [main] failed to start the concentrator

and

lora_gateway / libloragw # ./test_loragw_spi
Beginning or test for loragw_spi.c
data received (simple read): 0
End of test for loragw_spi.c

/lora_gateway/util_spectral_scan# ./util_spectral_scan
+++ Start spectral scan of LoRa gateway channels +++
ERROR: Failed to connect to FPGA

Both are not working, possibly a SPI problem?

Who can help me further, for example a manual or a how-to for a 96 board.

On the website the manual is missing.

2

Hi, @laurenshps

Which frequency are you using?
There is an error about FPGA in your log, i think you can check your global_config.json file to see if there is a LBT option? If it is, you need to set it to FALSE.

Also, you can try to reduce the SPI rate, maybe 2Mbps or 1Mbps is fine.

3

Hi,

EU868 is the frequency,

I have put the code in DEBUG mode and get the folowing error:

Note: SPI port opened and configured ok
Note: SPI read success
lgw_connect:532: INFO: no FPGA detected or version not supported (v0)
Note: SPI read success
lgw_connect:555: ERROR: NOT EXPECTED CHIP VERSION (v0)
ERROR: FAIL TO CONNECT BOARD
ERROR: [main] failed to start the concentrator

The speed is 2mbps

4

Sorry, i have less experience on 96Board, but i think you can also try to use another test progress test_loragw_reg in libloragw folder to test the register of SX1301.

5

We’ve tested on RPi +RAK2245 using test_loragw_spi, this is the correct log:
Beginning of test for loragw_spi.c
data received (simple read): 48
End of test for loragw_spi.c

But your data received is 0.
So i think the SPI interface of your 96Board device is close. Please check it.

6

/libloragw# ./test_loragw_spi
Beginning of test for loragw_spi.c
Note: SPI port opened and configured ok
WARNING: SPI address > 127
Note: SPI write success
Note: SPI read success
lgw_spi_wb:309: BURST WRITE: to trans 16 # chunk 16 # transferred 16
Note: SPI burst write success
lgw_spi_rb:371: BURST READ: to trans 16 # chunk 16 # transferred 16
Note: SPI burst read success
lgw_spi_wb:309: BURST WRITE: to trans 2500 # chunk 1024 # transferred 1024
lgw_spi_wb:309: BURST WRITE: to trans 1476 # chunk 1024 # transferred 2048
lgw_spi_wb:309: BURST WRITE: to trans 452 # chunk 452 # transferred 2500
Note: SPI burst write success
lgw_spi_rb:371: BURST READ: to trans 2500 # chunk 1024 # transferred 1024
lgw_spi_rb:371: BURST READ: to trans 1476 # chunk 1024 # transferred 2048
lgw_spi_rb:371: BURST READ: to trans 452 # chunk 452 # transferred 2500
Note: SPI burst read success
Note: SPI read success
data received (simple read): 0
Note: SPI port closed
End of test for loragw_spi.c

On my Osciloscope i see data on the SPI pins.

In loragw_spi.native.c i have:

#define READ_ACCESS 0x00
#define WRITE_ACCESS 0x80
#define SPI_SPEED 2000000
//#define SPI_DEV_PATH “/dev/spidev0.0”
#define SPI_DEV_PATH “/dev/spidev32766.0”

And in library.cfg i have

CFG_SPI= ftdi

Is it correct?

7

I got no signal at pin 10 this is SPI_MISO pin.

SPI_CLK, SPI_CS and SPI_MOS are working fine.

I slowly start thinking that the module is a DOA…?

8

Hi Laurenshps,

How do you know there is no signal at pin 10.Please refer to SCH.png.
For SPI interface,there is a level translate circuit because 96BOARDS’s interface level is 1.8V.
So please confirm to reduce the SPI rate to 1Mbps.

SCH
SCH.png1920×1080 181 KB

9

Hi Jeff,

I have put a oscilloscope on the SPI pins and started ./test_loragw_spi, all SPI are showing data except pin 10, pin 10 shows a flat line. Tested 1,2,4 and 8 Mbps

The 1.8 volt at pin 35 is fine.

Thanks,
Laurens

10

should we send you a new sample you can verify again?

11

yes please, i have also gone through all options.

12

pls send email to [email protected] for detail shipping arrangement