Datasheet

If the command doesn't support execute mode, the response will normally be 'ERROR' on a

new line.

Read Command Mode '?'

'Read' mode is used to read the current value of a command.

Not every command supports read mode, but you generally use this to retrieve information

like the current transmit power level for the radio by appending a '?' to the command, as

shown below:

If the command doesn't support read mode or if there was a problem with the request, you

will normally get an 'ERROR' response.

If the command read was successful, you will normally get the read results followed by 'OK'

on a new line, as shown below:

Note: For simple commands, 'Read' mode and 'Execute' mode behave identically.

AT+BLEPOWERLEVEL?

-4\r\n

OK\r\n