Serial Volume Control

remeolb

I'm pretty new to AMX programming (I've been through every class except Programming II and III). I'm wondering, what is a good way to control volume when using serial control? For example,

SEND_STRING dvREF_70, "'(0,S,I,1=24;)'" // B&K VOLUME UP
SEND_STRING dvREF_70, "'(0,S,I,1=C4;)'" // B&K VOLUME DOWN

these two strings will increment/decrement the volume by 1 on a B&K Reference 70 surround processor. I want to know what code to use to make the volume buttons on an R4 remote properly adjust the volume. In other words I want to hold either volume up or down and make the volume ramp smoothly up or down. I know timing depends on the device but I'm not even sure what code to start with. I can play with the timing on my end. Also, how would I do the same thing with the wheel of an MVP-5200i? Any help would be very much appreciated. Thanks!

P.S. I think everyone knows that the two smileys should be ";" and ")"

Spire_Jeff

A simple way to do this would be with the HOLD event. There are plenty of threads that deal with more complicated volume control methods, but here is a quick overview of the simple way:

button_event[dvR4,btnVolUp]{
push:{
   SEND_STRING dvREF_70, "'(0,S,I,1=24;)'"
}
hold[3,REPEAT]{
   SEND_STRING dvREF_70, "'(0,S,I,1=24;)'"
}
}

Adjust the 3 in the hold time to adjust the ramp rate.

Jeff

remeolb

That worked great! I didn't think it would be that simple. Thanks a ton!

I did a search for serial volume control and couldn't find too much. Would anybody care to point me toward some threads that cover some of the more advanced methods?

John Gonzales

Here are a few:
http://www.amxforums.com/showthread.php?t=3920
http://www.amxforums.com/showthread.php?t=5070
http://www.amxforums.com/showthread.php?t=3649
http://www.amxforums.com/showthread.php?t=2769
http://www.amxforums.com/showthread.php?t=5493

--John

remeolb

Wow! That worked for the MVP-5200i wheel as well. I didn't realize that you could use a hold with the wheel.

mpullin

remeolb wrote: »

Wow! That worked for the MVP-5200i wheel as well. I didn't realize that you could use a hold with the wheel.

Classic axiom says: Don't reinvent the wheel
NBC says (of its reruns): If you haven't seen it, it's new to you