Hi Nordic,
I'm trying to get a GPS fix in clear blue sky in the middle of Paris today, but still can't...
Modem firmware: 1.2
Application firmware: thingy91_ltem_dfu_2020-04-29_bc7ade8b.hex
The only data received to the nrf cloud comes from the sensors.
I've seen that the hardware version 1.4 improved the GPS fixing, but where to buy this new Thingy91 please?
Thanks
EDIT: link monitor console says that only 1 satellite is tracked
Hi Pierre,
You would need to check with the different distributors which version they have in stock:
https://www.nordicsemi.com/About-us/BuyOnline?search_token=nRF6943&series_token=nRF9160
When you tested the GPS did you have open sky conditions? e.g. no trees or windows that could block the GPS signals?
I assume you enabled the GPS operation (long press the button for a minimum of 10 seconds).
Would you mind sending the log output?
Best regards,
Martin L.
Thanks Martin,
Just ordered another one via RS, the datasheet is v1.4, fingers crossed!
AT+CFUN? :
AT+CFUN?+CFUN: 1OK AT+CGSN=1+CGSN: "352656100876609"OK AT+CGMINordic Semiconductor ASAOK AT+CGMMnRF9160-SICAOK AT+CGMRmfw_nrf9160_1.2.0OK AT+CEMODE?+CEMODE: 2OKAT%XCBAND=?%XCBAND: (2,3,4,8,12,13,20,28)OK AT+CMEE?+CMEE: 1OK AT+CNEC?+CNEC: 24OK AT+CGEREP?+CGEREP: 1,0OK AT+CIND=1,1,1OK AT+CEREG=2OK AT+CEREG?+CEREG: 2,5,"CAE2","016ECC06",7OK AT+COPS=3,2OK AT+COPS?+COPS: 0,2,"20801",7OKAT%XCBAND%XCBAND: 20OK AT+CGDCONT?+CGDCONT: 0,"IP","ibasis.iot","10.160.221.58",0,0OK AT+CGACT?+CGACT: 0,1OKAT%CESQ=1OK AT+CESQ+CESQ: 99,99,255,255,255,255OKAT%XSIM=1OKAT%XSIM?%XSIM: 1OK AT+CPIN?+CPIN: READYOK AT+CPINR="SIM PIN"+CME ERROR: 0
Been used to get a fix under 30secs with a Quectel chip... that's why I thought it wasn't working at all.
EDIT: got a fix after 1300 secs:
[00:21:37.149,597] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 17: used, healthy[0m [00:21:37.158,813] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 19: used, healthy[0m [00:21:37.168,090] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 6: used, healthy[0m [00:21:37.177,307] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 9: used, healthy[0m [00:21:37.186,523] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking: 4 Using: 4 Unhealthy: 0[0m [00:21:37.195,404] [0m<dbg> nrf9160_gps.print_satellite_stats: Seconds since last fix 1297[0m [00:21:38.159,118] [0m<dbg> nrf9160_gps.gps_thread: PVT: Position fix[0m [00:21:38.165,679] [0m<dbg> nrf9160_gps.stop_gps: Stopping GPS[0m [00:21:38.178,314] [0m<inf> asset_tracker: GPS_EVT_PVT_FIX[0m [00:21:38.183,929] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 17: used, healthy[0m [00:21:38.193,145] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 19: used, healthy[0m [00:21:38.202,362] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 6: used, healthy[0m [00:21:38.211,547] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 9: used, healthy[0m [00:21:38.220,886] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking: 4 Using: 4 Unhealthy: 0[0m [00:21:38.229,766] [0m<dbg> nrf9160_gps.print_satellite_stats: Seconds since last fix 0[0m [00:21:38.237,945] [0m<dbg> nrf9160_gps.gps_thread: NMEA: Position fix[0m [00:21:38.244,598] [0m<inf> asset_tracker: Position fix with NMEA data[0m [00:21:38.251,342] [0m<inf> asset_tracker: GPS will be started in 900 seconds[0m
I've some passive GPS antennas but the connecctor doesn't seem to be a uFL, could you please recommend a compact external antenna compatible with the Thingy91 please?
EDIT 2:
Got a fix on a hot start after 258 secs, same position & static asset... quite long no?
[00:25:56.697,357] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 19: used, healthy[0m [00:25:56.706,573] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 17: used, healthy[0m [00:25:56.715,789] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 9: used, healthy[0m [00:25:56.725,006] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 4: used, healthy[0m [00:25:56.734,313] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 6: used, healthy[0m [00:25:56.743,530] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking: 5 Using: 5 Unhealthy: 0[0m [00:25:56.752,410] [0m<dbg> nrf9160_gps.print_satellite_stats: Seconds since last fix 258[0m [00:25:57.707,824] [0m<dbg> nrf9160_gps.gps_thread: PVT: Position fix[0m [00:25:57.714,508] [0m<dbg> nrf9160_gps.stop_gps: Stopping GPS[0m [00:25:57.727,111] [0m<inf> asset_tracker: GPS_EVT_PVT_FIX[0m [00:25:57.732,727] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 19: used, healthy[0m [00:25:57.741,943] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 17: used, healthy[0m [00:25:57.751,281] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 9: used, healthy[0m [00:25:57.760,498] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 4: used, healthy[0m [00:25:57.769,714] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking SV 6: used, healthy[0m [00:25:57.779,022] [0m<dbg> nrf9160_gps.print_satellite_stats: Tracking: 5 Using: 5 Unhealthy: 0[0m [00:25:57.787,902] [0m<dbg> nrf9160_gps.print_satellite_stats: Seconds since last fix 0[0m [00:25:57.796,112] [0m<dbg> nrf9160_gps.gps_thread: NMEA: Position fix[0m [00:25:57.802,764] [0m<inf> asset_tracker: Position fix with NMEA data[0m [00:25:57.809,448] [0m<inf> asset_tracker: GPS will be started in 900 seconds[0m
Hi,
Using an GPS antenna with the adapter Murata part no. MXHS83QE3000 mentioned in the documentation: https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_thingy91%2FUG%2Fthingy91%2Fhw_description%2Fhw_gps.html&cp=12_0_5_2_2 then you should be good.
You should see improvements using v1.4.0 or and external GPS antenna.
