AT commands always replied with ERROR

SL6087, SL808x, SL809x, SL9090, SL501x, Q2686, Q2687, Q2698, Q26 Elite

AT commands always replied with ERROR

Postby lucasRotava » Tue Mar 13, 2018 4:06 pm

Hello all,

i have one case of a SL8082T modem that stopped working in my application. In this case my system cannot really communicate with the modem.

In order to have at least something i had to set the MCU baudrate to 9600, send three times AT\r (i read that this causes the resynchronization of the uart) and only then I could make the modem echo my commands, but all of them (till now i´ve found some exceptions) are replied with ERROR. Starting any command that doesn´t start with 'a' or 'A' results in no echo from the modem.
After 5 min without sending commands i received a message from the modem: *** TIME OUT ***

[2018-03-14 08:35:16.602]
[2018-03-14 08:36:28.350] ÈAT
[2018-03-14 08:36:30.033] OK
[2018-03-14 08:36:32.477] ate1
[2018-03-14 08:36:33.377] ERROR
[2018-03-14 08:36:41.726] at
[2018-03-14 08:36:42.785] OK
[2018-03-14 08:36:45.438] ati9
[2018-03-14 08:36:47.393] ERROR
[2018-03-14 08:41:12.220] at
[2018-03-14 08:41:13.344] OK
[2018-03-14 08:46:12.780]
[2018-03-14 08:46:12.786] *** TIME OUT ***

SL808x Product

SL808x Product

(here i pressed enter without any command)

+WDWL: 1.13
+WDWL: 0

Any ideas on what could cause this? Until now i couldn't set a different baud rate, tomorrow i'll try more.

Thanks for the help!
best regards
Posts: 1
Joined: Wed Aug 09, 2017 12:29 am
Has thanked: 0 time
Have thanks: 0 time

Return to Q/SL Series

Who is online

Users browsing this forum: No registered users and 4 guests