|
Message
From: Guy Hutchison<ghutchis@g...>
Date: Wed May 24 18:58:26 CEST 2006
Subject: [oc] Looking for Varilog implementation of DMX (resend)
Not sure what the RS-485 line protocol is, but since it's usually
cross-listed with RS-232 and RS-422, it looks like it might be the same
serial UART with a differential driver. In which case, it would be simple
to use (for example) the TV80 with its included 16450 UART and hook it up to
an external diff driver.
And yes, it looks like a pretty simple protocol. In fact, for the device
side, a micro might be overkill. Reading between the lines, it looks like
it sends out a "start" character, then blasts out a series of light #/level
pairs. Each light just looks for its own light number. If you miss it, no
big deal, it will resend shortly...
On 5/24/06, Lauro, John <attachment.htm
|
 |
Browse
