Ashet OS

async_call: ashet.io.serial.query_control

Documentation

Reads all control lanes of the serial port.

Inputs

port: io.serial.SerialPort

Outputs

dtr: bool: Data Terminal Ready
dcd: bool: Data Carrier Detect
dsr: bool: Data Set Ready
ring: bool: Ring Indicator
rts: bool: Request To Send
Note:
This is also called RTR when used for modern hardware control flow.
cts: bool: Clear To Send

Errors

InvalidHandle
Unsupported: The serial port does not support control flow lanes.