Hi bro:
I'm porting AT command to OrangePi 2G-IOT, but it's different, has a lot of problem on modem,
On Android demo code, program utilizes /dev/ttyMux0 or /dev/ttyMux1 to exchange AT command,
but on Linux, I can't find /dev/ttyMux0 or /dev/ttyMux1.
I'm serach source code that registers /dev/ttyMux. but.... on /kernel/drivers/tty/serial/ , no API or code segment to achive it..
So, I want to know how to register /dev/ttyMux...
Send message utilize /dev/socket on Android, but the same way... no /dev/socked on Linux....
This is github of OrangePi 2G-IOT: https://github.com/orangepi-xunlong/OrangePi
