Piezo Speaker?

Dan Taylor

I cannot figure out how to make a sound with the propeller chip and a pieze speaker! Can someone show me a simple code for a speaker connected to pin 3?
Thanks in advance!

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Dan Taylor

MagIO2

Have a look at the Propeller Education Labs page 135. You can download it from the propeller download page.

Dan Taylor

I have been using the Propeller Education Lab, but I can't figure out how to use it. I am using the Propeller Demo Rev G, and it does not have a pin 27. So I have to change the pin.

I also tried the program that has two speakers. One on pin 3 and one on pin 27. But it still doesn't work.

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Dan Taylor

Vbriel

Maybe you are getting P3 mixed up with pin 3 on the chip. Just a thought.

Vince

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Briel Computers

http://www.brielcomputers.com

Dan Taylor

I just went over that. I don't think its that.

I think I got confused with the code when changing the pin. Could you help?

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Dan Taylor

KPR

Vbriel said...
Maybe you are getting P3 mixed up with pin 3 on the chip. Just a thought.


Vince

Hey Vince.. nice to see your here too.. A2 Forever!

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New ICON coming, gotta wait for the INK to heal, now we have colour!

Timothy D. Swieter

Can you post the code you are trying to use? Post it with your changes to P3.

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Timothy D. Swieter, E.I.
www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, 3.0" LCD Composite video display, eProto for SunSPOT
www.tdswieter.com

Vbriel

Hey A2forever, small world.



Hey Dan, yeah, if you can just paste the code, any info would help. It's always the little things, AWLAYS.



Vince

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Briel Computers

http://www.brielcomputers.com

Dan Taylor

Here is some of the coding that I have tried from book Propeller Education Kit Labs:

''SquareWaveTest.spin
''Send 2093 Hz square wave to P27 for 1 s with counter module.

CON
_clkmode = xtal1 + pll16x ' Set up clkfreq = 80 MHz.
_xinfreq = 5_000_000

PUB TestFrequency
'Configure ctra module

ctra[noparse][[/noparse]30..26] := %00100 ' Set ctra for "NCO single-ended"
ctra[noparse][[/noparse]5..0] := 27 ' Set APIN to P27
frqa := 112_367 ' Set frqa for 2093 Hz (C7 note) using:
' FRQA/B = frequency

Thomas Fletcher

I just used the led blink program from the Propeller manual.

PUB Toggle
  dira[noparse][[/noparse]16]~~
  repeat
    !outa[noparse][[/noparse]16]
    waitcnt(800_000 + cnt)

The lower the waitcnt number the higher the pitch.

Bob Lawrence (VE1RLL)

Try this. the output will be on physical pin X that p3 maps to on your board. I tested it on a Hybrid board and it outputs to physical pin 4

[code]
CON
_clkmode = xtal1 + pll16x ' Set up clkfreq = 80 MHz.
_xinfreq = 5_000_000

PUB TestFrequency

'Configure ctra module
ctra[noparse][[/noparse]30..26] := %00100 ' Set ctra for "NCO single-ended"
ctra[noparse][[/noparse]5..0] := 3 ' Set APIN to P3

frqa := 112_367 ' Set frqa for 2093 Hz (C7 note) using: ' FRQA/B = frequency

Dan Taylor

Both of those programs worked! Thank you guys!

However do you know how they got the programs to sing? Like the "seven" song?

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Dan Taylor