One command mode - Another bug in core firmware?


#1

Hi,

I am using 661_09gg.Q2686H 1925236 100506 11:13 core firmware, and I can’t tell how it happened, but the module went into a weird state:

After turning on / reset I am able to send one (exactly one!) AT command from the PC over UART 1. And only if it is sent quickly without delay between characters. If I type in, the module will only echo the first character and then no more.

If I turn off and on again, and then do a AT+WOPEN=1, the application will run, but also I will only be able to input one command to the application. But the application continues to run without problems - excecpt that there is no inbound UART 1 communication possible!

Did anybody also experience this problem, or is it just me? How can I fix this (don’t tell me to reflash the core firmware - I know that will do it… but it would be only possible by removing the module from the device which I prefer not to do many times…)

Best Regards,
Jan


#2

Hi jan,

I had problems with the upgrade to the 6.61os. It can be something like I had. This firmware version is the first to take care of the DTR signal who must be at 0 level otherwise nothing is sent. Try to look at this.

Good luck

Best regards,

gdt


#3

Hi gdt,

Thank you very much! I am pretty sure this is the problem!! I wasn’t able to test it yet, but I have another question:

Do you know, if it is possible to set the DSR signal of the modem. I found in the ADL User Guide just a way to poll DSR (I guess they mean DSR of the PC). I would need to set the other way from the modem to the PC… Is it possible to set this, too? Or is it automatically set, when the port is opened?

Thanks,
Jan


#4

I think that such kind of signals are set automatically but I never try to change the value myself.

Good luck

Best regards,

gdt