Running two freqout commands

abcdefg

Is there any way to run two simultaneous freqout commands and a routine controling them at the same time with an SX chip?

JonnyMac

You would need to synthesize the frequencies in an ISR so that you can run two simultaneously.

abcdefg

Is there any example codes for interrupts out there I can use?

JonnyMac

You may want to download the Al Williams book for specifics on generating frequencies; it shows how to do DTMF encoding in an ISR -- perhaps this is what you're after; if not, simply use two output pins.

http://www.parallax.com/detail.asp?product_id=70014

pjv

Hello abc;

The attached code runs two independent sine waves out of a single SX28.

Read the whole article if you like on the Parallax SX contest (last year's) web site.

Cheers,



Peter (pjv)

abcdefg

That's awesome. I only need two square waves, and then a simple block of code to control them based on a few inputs. I should be able to use that as a starting point.