Question how can i use serial ports on android?

hetag

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Aug 5, 2024
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Looking for an app to read/write my android board serial port.

I know that the port is located at /dev/tty4, but i can't seem to find any apps to access the port.

looking for something like PuTTY, but for android.

Basically, it's that allwinner A50 calculator from china that runs android. The keypad communicates with a proprietary app over serial router login via /dev/tty4. I'm trying to reverse engineer the keypad for use in other apps, so I'm trying to get the serial protocol it uses.
 
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