uartReadTimeout - Test if UART is not transmitting

Test if nothing is received from UART.

Usage:

- command: uartReadTimeout UART0|UART1 <seconds> [<sendText>]
  [retry: <retryCount>]

Argument

Description

UART0, UART1

UART port

seconds

Number of seconds to wait for incoming data

sendText

Text to send before waiting. Prefix with hex to interpret as hex bytes.

retryCount

Number of times to retry the test step (optional)