HL7800 AT&K3 Issue

IoT Modules HL78
1

I’m using HL7800 fw 4.4.6.0, i’m working on a host processor implementation that handles the AT commands from/to the HL7800.
I’m experiencing problems with AT&K3. My implementation issues this command after startup, and in some cases the module does not respond with OK, it does not respond at all. The module accepts other commands after this, so it is not completely frozen, but it is annoying because I need to retry and this slows the initialization phase which causes faster battery drain. Any idea’s whats wrong, is it a bug? Anyone that could try to reproduce this, to strike out my UART implementation?

I can reproduce this by spamming AT&K3 to the module:
AT&K3

OK
AT&K3

OK
AT&K3
← no OK here
AT&K3

OK
AT&K3

OK
AT&K3

OK
AT&K3
← no OK here

2

Hi allardpotma,
It is known bug on firmware 4.4
Please wait for new released firmware. This issue does not impact on AT&K3 function. At this time, please do not send many AT&K3 commands continuously.

Thanks,

3

Any info on the release date of the upcoming firmware version?