4
West Mountain Radio
Operating Manual
Potentiometer Controls
As shipped, the CLRmodule will expect three potentiometers
(1K to 10K) for the volume, filter and tone to be connected. Using the
serial interface, the module may be configured to ignore any of these
inputs, making digital controls over the serial interface the only way
to change the settings. Once configured, the settings remain in effect
even after power is removed.
Serial Interface
This interface is a 115.2K baud 0-3.3V, no parity asynchronous serial
communication port.
The message format for commands is:
Start of Message
Length
Command
Data
4
Count of bytes not
including the 4
See Table
See Table
1 byte
1 byte
1 byte
0-66 Bytes
Example to read CLRmodule State:
Send three bytes: 04 02 03
Receive:
04 03 03 00
Length and
Command
Description
Response
02 01
Report Firmware Version 04 05 01 xx yy zz
xx Major Version,
yy Minor Version,
zz Serial Interface Version
02 02
Report Friendly Name
02 xx 02 dd...
dd string is text name