uartExpect - Set expectation for uartAwait
Set a UART response to wait for with the uartAwait command.
Usage:
- command: uartExpect <uartPort> <expect> [noflush]
  [retry: <retryCount>]
| Argument | Description | 
|---|---|
| uartPort | UART port name:  | 
| expect | String to expect with subsequent  | 
| 
 | Don’t flush receive buffer before extraction | 
| retryCount | Number of times to retry the test step (optional) |