Strange ttyAT beahvior


#1

Hi,

i flashed kernel and rootfs on the target. All Sierra Packages and Software removed from windows host. No legato installed on target. USB serial converter connected to VMWare Ubuntu 12.04.

Now I can connect the serial AR7554 linux console. If i try to open the microcom -s 115200 /dev/ttyAT there is no reaction. With colleagues native installed ubuntu, ttyAT is proper open able.

What’s the deal with my installation?

Regards,
Micha


#2

Hello,

The AT port does not support local echo. Try typing AT and hitting enter. You should see an OK appear.

-Kelly


#3

Hi,

local echo is not the issue.

It seems to be problematic if you connect follwoing:
microcom /dev/ttyUSBx -> Ar7 linux console -> microcom /devttyAT --> not working

ssh over usb(ecm) -> ar7 linux console -> microcom /dev/ttyAT -> working

Cheining microcom to AT console is not working.

Regards,
Michael