Pulse out to speaker -- How???

MovieMaker

If I want to send a frequency or audio tone out to a speaker on a certain pin, how would I word this in Boebasic?

I know how to use outa[noparse][[/noparse]pin]=1 or 0 to turn the state on and off. But, if I need to say a frequency or a duration, how is this worded?

And, I am wondering how to use the BS2 object.· How do I load it? How do I use it?

Thanks Guys!!

·

Erik Friesen

How about giving freqency synth a try? It is real easy to use and is in the stock propeller files. To stop it just do

Freq.Synth("A",24, 0)

and create the freqency of your choice by

Freq.Synth("A",24, freqency)

MovieMaker

Thanks Erik.



Does this work with boebot basic? that what I am using.

Mike Green

This doesn't work in BoeBotBasic. The best you could do there is to toggle the I/O pin on and off in a loop with a short delay like

100 for i = 1 to 100
110 outa[noparse][[/noparse] 5 ] = i :   rem  I is alternately odd / even
120 next i

I'm not sure what tone you would get. BoeBotBasic is quite slow since it's an interpreter written in an interpreted language (Spin) and each level of interpretation slows things down by a large factor. It is possible to add a statement to BoeBotBasic for making tones that would call the frequency synthesis object, but I haven't done that. Several people have modified BoeBotBasic themselves to add functionality for their own projects, but frequency synthesis hasn't been one of the functions added.

MovieMaker

Thanks Mike.

I just wanted to test my speaker system. So, I used the freq.synth object. but, sooner or later, I want to combine all of the individual items together. In order to do that, I need one system that will do them all. I guess Spin is the answer. But, everything is working now indiviually except my IR. And the IRemitters work fine. I am waiting to get some IRdet to replace the ones that burned up. After I get this working, I am going to go for the whole enchilda! This has been a learning experience and you have clarified much of this. I have a DENSE head. I don't mean to be, but this is the way I am. I have ADD and have a hard time concentrating. But, thanks for being kind and understanding with me.