I have MC7455 and my system is ubuntu 20.04.
I am able to see /dev/ttyUSB0, ttyUSB1 and ttyUSB2.
However, I don’t see any response from ttyUSB2 with minicom with any at command, like ate0:
sudo minicom -D /dev/ttyUSB2
Below is serial module used in my system:
qcserial 28672 0
usb_wwan 24576 1 qcserial
usbserial 53248 2 qcserial,usb_wwan
Any idea why this happens?