RAK5860 WisBlock GPS not working

WisBlock
1
  • What product do you wish to discuss? RAK4631 + RAK5680
  • What firmware are you using? Arduino BSP
  • Computer OS? Windows
  • How often does the problem happen? Repeatable/Every Time
  • How can we replicate the problem?

I have purchased the Link.One (RAK4631 + RAK5680) and have been trying to get the example GNSS code to work: https://github.com/RAKWireless/WisBlock/tree/master/examples/common/communications/Cellular/RAK5860_BG77_Module/RAK5860_GNSS_Satellite

+CME ERROR: 516
AT+QGPSLOC?

+CME ERROR: 516
AT+QGPSGNMEA="GSV"

OK
AT+QGPSLOC=1

+CME ERROR: 516
AT+QGPSLOC?

+CME ERROR: 516
AT+QGPSGNMEA="GSV"

OK

This repeats forever. Testing outside in clear sky.

The following topic suggests that maybe the example might be incomplete

https://forum.rakwireless.com/t/rak5860-wisblock-nb-iot-bg77-series-gnss/3522/39

Does the example require the following entries to work

#define BG77_POWER_KEY 4 //WB_IO1
#define BG77_GPS_ENABLE 34 //WB_IO2
#define BG77_POWER_KEY 17

any suggestions?

Thanks

2

Can anyone have a look at the following sketch and give me an idea as to why the module cant get a GPS fix?

5860_GPS.ino

I used the device outside clera sky for 10 minutes and it never gets a fix:

Modem response after start:
ATI

Quectel
BG77
Revision: BG77LAR02A04

OK

BG77 power up!
AT

OK
AT+QGPS=1

+CME ERROR: 504
loop1
AT+QGPSLOC?

+CME ERROR: 516

In what way does NOT having a battery or seperate power supply to the baseboard effect the functionality? Does not having a bettery cause GPS not to get a fix? Does it impact cellular connections?

4

Welcome to the forum @heraldoftech

Works for me:

13:02:50->AT+QGPSLOC?
+CME ERROR: 516
13:02:51->AT+QGPSLOC?
+CME ERROR: 516
13:02:52->AT+QGPSLOC?
+CME ERROR: 516
13:02:53->AT+QGPSLOC?
+CME ERROR: 516
13:02:54->AT+QGPSLOC?
+CME ERROR: 516
13:02:55->AT+QGPSLOC?
+CME ERROR: 516
13:02:56->AT+QGPSLOC?
+CME ERROR: 516
13:02:57->AT+QGPSLOC?
+CME ERROR: 516
13:02:58->AT+QGPSLOC?
+CME ERROR: 516
13:02:59->AT+QGPSLOC?
+CME ERROR: 516
13:03:00->AT+QGPSLOC?
+CME ERROR: 516
13:03:01->AT+QGPSLOC?
+CME ERROR: 516
13:03:02->AT+QGPSLOC?
+CME ERROR: 516
13:03:03->AT+QGPSLOC?
+QGPSLOC: 050300.47,1425.2847N,12100.4148E,1.4,42.0,3,0.00,0.1
13:03:03->AT+QGPSLOC?
+QGPSLOC: 050300.47,1425.2847N,12100.4148E,1.4,42.0,3,0.00,0.1

However, when using the RAK5860, I always use a battery.

If that doesn’t help, double check the connection and wire of the GNSS antenna.

1 Like
5

Thanks @beegee - is that using the sketch I linked or the version from rakwireless github?

Connections have been checked (was assembled from factory) so thinking it might be the battery.

I’ll get a battery and report back.

6

It is the code that you sent.

1 Like
7

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