LC29H (AA) I2C working?

IoT Modules GNSS Module
1

I’m trying to query for NMEA data using the “I2C Application Note”.

The “0x50” device appears on the bus but I don’t see “0x54”.

My LC29H (AA) module details are:

UC6580I G1B1L1E1 COM1
PN 2400615000268
SN 20230727114033005
HWVer 00
FWVer R6.0.0.0Build3700
Copyright (c), Unicore Communications Inc.
All rights reserved.

Do I need new firmware?

Or is the application note out of date?

Thanks!

Allan

2

Ooops, embarrassing, I pasted the wrong module’s firmware.

Here is the firmware for the LC29HAA:

$PQTMVERNO,LC29HAANR11A03S,2023/12/14,10:12:35*34

I assume I2C is enabled by default?

3

Hi @allanmac
Please provide your email address and I will send you the relevant information via email.

4

Email: allanmac@gmail.com

Thank you!

5

Hi @allanmac
I have sent you the relevant information via email, please check.

1 Like
6

Hello George,
I’m having the same problem. I need support with a C code example to read NMEA data via I2C. I’ve read the Quectel application notes available on the website, but I have no idea how to request positioning data via I2C. Here’s my email: jicem.tec@gmail.com
Please provide an example or any useful information. We have several devices that use the LC29H (AA) module.

7

Hello George,
having the same problem with LC29HAA and LC29HDA. The modules do ack with “0x50”, but no sending any response when reading multi bytes.
Firmware is: LC29HAANR11A03S,2023/12/14,10:12:35*34\r\n
Here’s my email: ea@x-log.de
Could you please provide me asap the relevant information via email as well.
Thx