RC76 ports

Whats does /dev/qcqmi port do? and what is the difference with /dev/ttyUSBx?
ps: i have RC76 module

/dev/ttyUSBx are serial port for DM, NMEA, AT command.
/dev/qcqmi is QMI port including network data communication.

Hi @jyijyi ,

Thanks for the response
another question please, how i can send At command through At port from Android env? from Linux i use minicom but from Android i don’t know how?

you can use "echo " command to send AT command to /dev/ttyUSBx port.
To read the data, you can use “cat /dev/ttyUSBx”