Can you add usbserial support?

[kk580kk]

Android device that not support USB serial, so I need a app can create ttyUSB0 file for python app read.

[tejado]

I added a serial gadget using ACM function:
7e29b44

It might require a specific Android ROM which has ACM activated. I will look into other functions which could be an alternative to ACM abd are usually part of Android.

[kk580kk]

My device is XIAOMI pad 5, and this rom didn't have usb serial driver lib.

1|nabu:/system/lib # modprobe -d /vendor/lib/modules usbserial vendor=0x1a86 product=0x7523
modprobe: alias lines in modules.alias must have 3 entries, not 5
modprobe: alias lines in modules.alias must have 3 entries, not 4
modprobe: alias lines in modules.alias must have 3 entries, not 4
modprobe: alias lines in modules.alias must have 3 entries, not 4
modprobe: LoadWithAliases was unable to load usbserial
modprobe: Failed to load module usbserial: No such file or directory

Can you add gadget serial support like
https://android.googlesource.com/kernel/common/+/bcmdhd-3.10/Documentation/usb/gadget_serial.txt

[tejado]

I did - it is in the commit I pointed out before. It is done over gadget CDC ACM (see your link).
Can you provide me your Device Info in Android USB Gadget tool app on your device?