Not responding to AT commands

RE: Not responding to AT commands

Martin Lesund — Wed, 27 May 2020 08:01:37 GMT

Hi d4L,
Would you like to share what you have changed in the code so we could take a look, and if it's actually benefiting the sample we could add it & merge it with the existing sample.

RE: Not responding to AT commands

d4L — Tue, 26 May 2020 10:03:21 GMT

Hi there. The one(UART) which is used to send special BSD lib TCP commands and regular AT commands.
Anyway I have fixed that issue. Just moded serial lte modem source, so now this example is much more responsive and does not have constant 100ms delay.
Seems there are no side effects. So it is ok for me.

RE: Not responding to AT commands

Martin Lesund — Mon, 25 May 2020 12:14:49 GMT

Hi d4L,
Which serial terminal do you use on the computer side?

RE: Not responding to AT commands

d4L — Mon, 25 May 2020 10:54:45 GMT

Hello. I have tested that firmware. Now modem does not stuck after few AT commands, now it just ignores them, it handles AT commands too slow. Without 100ms delays it just ignores, at least doesn't brick as it was before. This firmware fixed bricking, but not speed of AT cmd handling which is way too slow.

RE: Not responding to AT commands

Martin Lesund — Fri, 15 May 2020 11:02:12 GMT

Hi Praveen,
I have build the Serial LTE Modem sample with the included fix that Håkon mentioned.
devzone.nordicsemi.com/.../serial_5F00_lte_5F00_modem_5F00_15_5F00_05.hex

Please try this version and you should not get this modem "forever" hand.

BR,
Martin l.

RE: Not responding to AT commands

Hakon — Fri, 15 May 2020 09:42:59 GMT

Can you try implementing this PR and see if it solves it?

RE: Not responding to AT commands

Hakon — Wed, 13 May 2020 11:41:01 GMT

Hello,

can you send me the code so I can try to reproduce the issue?