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Patch Upgrade

Solution

I’ve powered up the A5100 evaluation module and it’s only partially working.

I get a serial data string from the USB serial port, but the string is empty. The A5100 is alive, but it’s not seeing any satellites.

The evaluation board is putting 3.3V on the Vant pin of the A5100, but the voltage is not getting to the A5100 ANT_IN pin, so the antenna is not receiving any bias voltage.

My reading of the manual makes me think it should turn on the antenna voltage automatically when in active receive mode. Is there anything I have missed?

Hi Max,

Baud rate of EVA5100-A is NMEA 9,600, please make sure correct baud rate had been used.

Thanks!

Cheers,
Calvin




Hello Calvin,

It sounds like the customer has the correct baud rate selected since they are recieving empty NMEA strings. The main problem is that the A5100 is not seeing any satellites (i.e. GSV returns null characters).

I suspect the issue may be in the hardware setup, do you think he might have the antenna biasing setup incorrectly based on their description?

Kind regards,

Max

Hi Max,

It's very straight forward to use active antenna in EVA5100-A. You just need to screw the active antenna to the SMA antenna connector. Power will be given from USB to VANT directly, no switch or setting is required.

1. Would you ask the client to draw a simple block diagram to show me the connection of using EVA5100-A please?

2. Please ask her to send NMEA command "$PSRF125*21" to read the patch version. It should be "version:5xp__5.5.21-R32+5xpt_5.5.21-R32 Smart-gear 9600".

3. Would you get the log file for study please?

Thanks!

Cheers,
calvin




Hello Calvin,

I will get the information from the customer on 1. and 2., for #3 (log file) is there a document or instructions somewhere that goes over the procedure? I couldn't find anything on the support or main Maestro page.

Thanks,

Max

Hello Calvin,

Feedback from the customer:

The block diagram is essential just the USB cable, the EVA and a GPS antenna.

Maybe this will help clarify it. In active receive mode:
Voltage on pin 9: 3.3V
Voltage on pin 11 with antenna connected: 0V
Voltage on pin 11 with no antenna connected: 0V

I have tested the antenna with another GPS and it works OK.

The response to the NMEA command is:

$PSRF195,5xp__5.5.2-R32+5xpt_5.5.2-R32*06

I tested this using GPS Cockpit and SiRFLive and got the same answer.

Here is one complete cycle from the unit:

$GPGSV,8,1,32,01,00,000,,02,00,000,,03,00,000,,04,00,000,*75
$GPGSV,8,2,32,05,00,000,,06,00,000,,07,00,000,,08,00,000,*7E
$GPGSV,8,3,32,09,00,000,,10,00,000,,11,00,000,,12,00,000,*78
$GPGSV,8,4,32,13,00,000,,14,00,000,,15,00,000,,16,00,000,*70
$GPGSV,8,5,32,17,00,000,,18,00,000,,19,00,000,,20,00,000,*70
$GPGSV,8,6,32,21,00,000,,22,00,000,,23,00,000,,24,00,000,*72
$GPGSV,8,7,32,25,00,000,,26,00,000,,27,00,000,,28,00,000,*7B
$GPGSV,8,8,32,29,00,000,,30,00,000,,31,00,000,,32,00,000,*73
$GLGSV,1,1,,,,,,,,,,,,,0.0*4B
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00
$GNRMC,,V,,,,,,,,,,N*4D
$GPGGA,,,,,,0,00,,,M,0.0,M,,0000*48
$GNGNS,,,,,,NN,00,,,0.0,,0000*7D
$GNGSA,A,1,,,,,,,,,,,,,,,*00

Hi Max,

According to your information, the original patch has been deleted and that's why the control of one GPIO related to VANT was disabled. Here attached a .RAR file which included the patch upgrade tool & corresponding patch for you.

Inside "A5100-A PatchDownload" floder, there are 3 files:
+ PatchDownload.exe
+ ROMPatchApplication.exe
+ SiRFStarV_5e_5xp_5ea_Patch_5_5_21_9600.pd3

Please double click "PatchDownload.exe" and configure as below:

Patch File: SiRFStarV_5e_5xp_5ea_Patch_5_5_21_9600.pd3
UART Port: please choose the UART port you currently use
Before Rate: Current baud rate of your EVA5100-A
Before Mode: NMEA
New Rate: 9600

Step 1: Press "Clear", you can see clear is ended in the left hand side after a few seconds.

Step 2: Press "START", you can see the new patch version if download is successful.

Lastly, please don't do factory reset that will erase your loaded patch. Cold Start reset is okay.

Thanks!

Cheers,
Calvin




Hello Calvin,

From the customer:

I tried the patch and the Clear seemed to work OK:

PIC#1 (See attached)


Loading the patch didn’t seem to work:

PIC#2 (See attached)

I didn’t see any activity on the serial port LEDs on the EVA-5100 during the time the patch should have been downloading.

I tried the patch a second time and got some activity on the LEDs, but I got an error message from the patch program after the patch download when it tried to read the patch number(sorry no screen shot). After that the A5100 was apparently transmitting serial data, but I couldn’t figure out what baud rate and if it was NMEA or OSP.

I tried the patch a third time, and had the same result as the first time.

Now, when I press the ON button, the wakeup LED goes on but the unit doesn’t send any serial data. When I press the ON button again, the WAKEUP LED does not go off.

Any suggestions? I don’t know how to perform a factory reset. Do you think that would help?

Dear Max,

In order to confirm all patch was cleared successfully, you can do a factory reset by NMEA command below (I assume your EVA5100-A was in NMEA mode).
$PSRF101,-2686727,-4304282,3851642,75000,225054,1775,12,8*12

According to R&D, the NMEA factory reset may not 100% clear the patch data sometimes. You can try to switch to OSP mode first by
$PSRF100,0,115200,8,1,0*04
and do the factory reset by OSP command,
A0 A2 00 19 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0C 38 00 C4 B0 B3

Now, you are ready to donload the patch to EVA5100-A. Here attached a screen capture that we can successfully download the patch to EVA5100-A for your reference.

Thanks!

Cheers,
Calvin




Hello Calvin,

The customer tried the EVA5100 several times now. Each time, he was able to clear the patch info. It does seem that the new patch downloads because he sees the TX and RX data lights flashing. However, when the GPS Patch update program attempts to read the patch version after the download it fails. See attached.

Anything we can do to resolve this?

Hello Calvin,

The customer tried the EVA5100 several times now. Each time, he was able to clear the patch info. It does seem that the new patch downloads because he sees the TX and RX data lights flashing. However, when the GPS Patch update program attempts to read the patch version after the download it fails. See attached.

Anything we can do to resolve this?

Hello Calvin,

The customer tried the EVA5100 several times now. Each time, he was able to clear the patch info. It does seem that the new patch downloads because he sees the TX and RX data lights flashing. However, when the GPS Patch update program attempts to read the patch version after the download it fails. See attached.

Anything we can do to resolve this?

Hello Calvin,

The customer tried the EVA5100 several times now. Each time, he was able to clear the patch info. It does seem that the new patch downloads because he sees the TX and RX data lights flashing. However, when the GPS Patch update program attempts to read the patch version after the download it fails. See attached.

Anything we can do to resolve this?

Hello Calvin,

The customer tried the EVA5100 several times now. Each time, he was able to clear the patch info. It does seem that the new patch downloads because he sees the TX and RX data lights flashing. However, when the GPS Patch update program attempts to read the patch version after the download it fails. See attached.

Anything we can do to resolve this?

Hello Calvin,

The customer tried the EVA5100 several times now. Each time, he was able to clear the patch info. It does seem that the new patch downloads because he sees the TX and RX data lights flashing. However, when the GPS Patch update program attempts to read the patch version after the download it fails. See attached.

Anything we can do to resolve this?

Hello Calvin,

The customer tried the EVA5100 several times now. Each time, he was able to clear the patch info. It does seem that the new patch downloads because he sees the TX and RX data lights flashing. However, when the GPS Patch update program attempts to read the patch version after the download it fails. See attached.

Anything we can do to resolve this?

Hi Max,

According to your screen capture, download should be successful. Since you were putting incorrect baud rate (New), you can't read the patch version. You can use NMEA command on terminal software to poll the patch version for verification instead.

Thanks!

Cheers,
Calvin

Attachments:
A5100-A-PatchDownload.rar A5100-A-PatchDownload.rar

 
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Article details
Article ID: 32
Category: GPS Module
Date added: 2014-06-25 18:39:29
Views: 2141
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