GPS can't fix - Fastrack Xtend (FXT002) + IO/GPS (FXTE01)

Legacy Open AT
1

Dear ALL,

We are distributors to Sierra Wireless Routers in our country, and want to extend our services to Fastrack as well, we just received a Fastrack sample to test it, but I spent whole 3 days trying to get the first GPS fix, applying all possible solutions I know, but I failed in all my attempts.

Starting from the specifications:

Boot-loader: V08b0k
Firmware: R7.44
Open AT OS: 6.34

And

Developer Studio: 1.2
Open AT Embedded Software Suit: 2.34
C-GPS: 1.7

I compiled the Developer Studio/C-GPS v1 sample applications: QueryApp, QueryAppAiding and SimpleSample (some of them with minor warnings) and none of them got any fix, even for a 15 minutes in a clear sky open area.

Knowing that the GPS is already active depending in the following:

AT+WCFM=5
+WCFM: 00000471,0

And I already enabled antenna power using:

AT+WHCNF=0,0
AT+WIOM=1,"GPIO8",1,0
AT+WIOW="GPIO8",0

During all the tests, the GPS green LED flashes in the initialization phase, and then keeps its LED on, the console always indicates no fix.

Is there anything more I am missing? Is there a compiled, compatible and tested WDL version of any C-GPS v1.7 test program (in case the cause is the Developer Studio)? Is there any way to check that GPS antenna is functioning currently? Shall I bother Sierra technicals as it’s not common problem?

Any help would be appreciated! But please don’t simply say ask your distributor! as we are the distributors in our region.

Regards,

2

So, surely, you should be able to obtain support direct form Sierra Wireless??!

3

He, he.

4

Sierra Wireless Support indicated that there is a bug in the 1.7 library. And we shall use the following AT command in order to enable UART2 port communication:

AT+WIOM=1,"GPIO1",1,0

Well! This might be helpful for someone else, but did not fixed our problem at all.

Looking forward to hear something useful from someone other than this he-he-guy .

5

My problem solved by placing:

//Enable active antenna
	adl_atCmdCreate("AT+WHCNF=0,0", 0, NULL, NULL);
	adl_atCmdCreate("AT+WIOM=1,\"GPIO8\",1,0", 0, NULL, NULL);
	adl_atCmdCreate("AT+WIOW=\"GPIO8\",0", 0, NULL, NULL);

	adl_atCmdCreate("AT+WIOM=1,\"GPIO1\",1,0", 0, NULL, NULL); //CGPS 1.7 bug workaround

After the call of AppInitCoreGps() inside the adl_main() in my AT project.

6

Big help for me, hamdi. Many thanks. I’m working with a FXT003.

7

where is this example the C-gps? i don’t see

greeting from Mexico :wink:

8

where is this example?

9

Hi,

If you have installed the Sierra Wireless software suite package, you
would find the C-GPS plug-in folder inside Sierra Wireless->Embedded Software folder, in my case its :
C:\Program Files\Sierra Wireless\Embedded Software\com.wavecom.openat.ide.spm.lib.plugin.model.C-GPS-OPUS-I.1.7.0.2010_1.7.0.2010

so inside the resources->C-GPS-OPUS-I->samples folder you will find the
different examples for the C-GPS plug-in.

10

Extension board GPS FXTE01 for FXT002 doesn’t work. Function erPvtIsFix(erPvt) returns 0. The program is initialized, retrieves data from the UART2, but the Structure erPvtStruct * erPvt contains only 0x00. What is the problem?

11

TRACE:
2012/06/18;14:05:53:584;006;ADL;1;DATAGPS Data Handler: 17 17
2012/06/18;14:05:53:631;001;ADL;1;ErideDataIn Check
2012/06/18;14:05:53:631;002;ADL;1;ErideCore Enter 17
2012/06/18;14:05:53:631;003;ADL;1;AppWriteDiagSerial 27
2012/06/18;14:05:53:631;004;ADL;1;AppWriteDiagSerial 12
2012/06/18;14:05:53:647;001;ADL;1;AppWriteDiagSerial 11
2012/06/18;14:05:53:647;002;ADL;1;ErideCore Exit 0
2012/06/18;14:05:53:647;003;ADL;1;erPvt->pvtFixType 0
2012/06/18;14:05:53:647;004;ADL;1;erPvt->pvtLlaFilt[0] 0
2012/06/18;14:05:53:647;005;ADL;1;erPvt->pvtLlaFilt[1] 0
2012/06/18;14:05:53:647;006;ADL;1;erPvt->pvtLlaFilt[2] 0
2012/06/18;14:05:53:647;007;ADL;1;PrintCurrentFix sRet = -1
2012/06/18;14:05:53:678;001;ADL;1;ErideDataIn Check
2012/06/18;14:05:53:694;001;ADL;1;DATAGPS Data Handler: 17 17
2012/06/18;14:05:53:740;001;ADL;1;ErideDataIn Check
2012/06/18;14:05:53:740;002;ADL;1;ErideCore Enter 17
2012/06/18;14:05:53:740;003;ADL;1;AppWriteDiagSerial 27
2012/06/18;14:05:53:740;004;ADL;1;AppWriteDiagSerial 12
2012/06/18;14:05:53:756;001;ADL;1;AppWriteDiagSerial 11
2012/06/18;14:05:53:756;002;ADL;1;ErideCore Exit 0
2012/06/18;14:05:53:803;001;ADL;1;DATAGPS Data Handler: 17 17
2012/06/18;14:05:53:803;002;ADL;1;ErideDataIn Check
2012/06/18;14:05:53:803;003;ADL;1;ErideCore Enter 17
2012/06/18;14:05:53:803;004;ADL;1;AppWriteDiagSerial 27
2012/06/18;14:05:53:803;005;ADL;1;AppWriteDiagSerial 12
2012/06/18;14:05:53:803;006;ADL;1;AppWriteDiagSerial 11
2012/06/18;14:05:53:803;007;ADL;1;ErideCore Exit 0
2012/06/18;14:05:53:819;001;ADL;1;DATAGPS Data Handler: 30 30
2012/06/18;14:05:53:850;001;ADL;1;ErideDataIn Check
2012/06/18;14:05:53:850;002;ADL;1;ErideCore Enter 30
2012/06/18;14:05:53:850;003;ADL;1;AppWriteDiagSerial 40
2012/06/18;14:05:53:865;001;ADL;1;AppWriteDiagSerial 12
2012/06/18;14:05:53:865;002;ADL;1;AppWriteDiagSerial 11
2012/06/18;14:05:53:865;003;ADL;1;ErideCore Exit 0