LC29H(BA) program codes

IoT Modules GNSS Module
1 
I am trying to set the SBAS to WAAS on the LC29H and am getting an error..
I tried '35' (as in PDF example), '1', '01', '0x1', '0x01', all with the same failed result.
[14:52:17.911 Uart Tx:0022 B] $PQTMCFGSBAS,W,35*08
[14:52:17.923 Uart Rx:0019 B] $PAIR001,000,4*3F

In addition the READ function fails as well. 
[14:52:49.857 Uart Tx:0019 B] $PQTMCFGSBAS,R*27
[14:52:49.865 Uart Rx:0019 B] $PAIR001,000,4*3F


I have no problem setting DGPS to SBAS
[15:00:56.230 Uart Tx:0015 B] $PAIR400,2*20
[15:00:56.247 Uart Rx:0019 B] $PAIR001,400,0*3F

No problem verifying SBAS is enabled
[15:02:27.882 Uart Tx:0013 B] $PAIR411*3E
[15:02:27.888 Uart Rx:0019 B] $PAIR001,411,0*3F
[15:02:27.894 Uart Rx:0015 B] $PAIR411,1*23

But setting SBAS to WAAS seems to be out of reach…

Firmware Version
[15:10:11.783 Uart Tx:0015 B] $PQTMVERNO*58
[15:10:11.792 Uart Rx:0056 B] $PQTMVERNO,LC29HBANR11A02S_CSA2,2023/05/09,20:49:45*0A

The Quectel_Product_Brochure_V8.5_2026.pdf says that the (BA) DOES support WAAS.

But then when I looked closer at the Protocol Spec v1.3 I see that it says “This command is only supported by LC29H (AA) and LC79H (AL)”.

On the other hand, when I am looking at the static threshold I see the opposite where the protocol spec says it is not supported and it actually works.

PAIR071: PAIR_COMMON_GET_STATIC_THRESHOLD
Note: This command is not supported on LC29H (BA, CA, DA, EA).
[16:33:57.156 Uart Tx:0013 B] $PAIR071*3C
[16:33:57.176 Uart Rx:0019 B] $PAIR001,071,0*3D          <--- Call succeeded 
[16:33:57.185 Uart Rx:0017 B] $PAIR071,0.0*3E

Is this normal? How do I know what to trust? And does the (BA) chip really not support WAAS or am I doing something wrong?

2

Do not also on _HEA
do on _HAA $PQTMCFGSBAS,OK,35*5B
35 are for all (default) but I follow this schema:
0000 + 0010 + 0100 + 0101 = 1011. In decimal 0 + 2 + 4 + 5 = 11
0000000000110101 0035 all default
e.g. 0000000000100000 0020 only gagan(5)
instead $PAIR commands are native for AG3335 chip and more reliable to accept.
Regards

3

Thank you for the response

Do not also on _HEA

Does this mean that you confirm that it does NOT work on the LC29H-BA, and the LC29H-EA ??
But only on the LC29H-AA ??

instead $PAIR commands are native for AG3335 chip and more reliable to accept.

I did not see the $PAIR equivalent to $PQTMCFGSBAS in the “LC29H Series&LC79H (AL)
GNSS Protocol Specification v1.3”

Can you point to a better source?

4

1)Yea
2)I was referring in general as per your 071…
however there are pair commands for sbas,
note that sbas includes all (WAAS/EGNOS/GAGAN/MSAS)
for example querying with 412 it tells me that
SVid 136 is a Galileo stationary satellite (egnos) which in QGNSS is referred to as Prn 49.

immagine
immagine513×316 10.9 KB

Regards

5

Got it!
Thanks for your timely information. I was able to find the right settings and eliminate conflicting settings, then just waited long enough to verify that WAAS was working.

Here is what I ended up setting..

PAIR400,2:   PAIR_DGPS_SET_MODE (SBAS - WAAS included)
PAIR410,1:   PAIR_SBAS_ENABLE (Enable)
PAIR104,1:   PAIR_DUAL_BAND_ENABLE (Enable)

I also tried PAIR080 NAV_FITNESS_MODE because our application is very slow moving, but wound up troubleshooting SBAS issues until I finally read the fine print that said SBAS does not work with PAIR080 enabled.