# device FAQ

## Which devices are currently supported?

The current source code implementation supports serial serial port. Calling open or scan on other device types returns an unsupported device type error.

## Which reading method should be used for binary protocols?

It is recommended to use `read_bytes()` for industrial protocols and custom binary messages, and the return value is fixed to Bytes. `read()` retains compatible behavior, legal UTF-8 returns String, illegal UTF-8 returns byte array; `read_text()` strictly converts according to UTF-8, and returns null on failure.

## What naming rules are used for serial port fields?

All configuration fields and return object fields use snake_case uniformly, such as baud_rate, data_bits, stop_bits, serial_number.

## Does write support binary?

Support. When passing in a string, UTF-8 bytes are written; when passing in an array, each element must be an integer from 0 to 255.