Strange ttyAT beahvior

Legato Application Framework
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