DTMF receiver

[lerameur]

Hi,

I know there has been lots of talk about here but has anyone been able to create a DTMFIN in picbasic pro. I did not want to go into the trouble of doing so, but I have not seen any eletronic store in quebec that had any dtmf receiver, I was not even able to find some on digikey. I guess all the big companies are doing software decoding nowadays so the chip is not in demand anymore..

ken

[mister_e]

How many you need?

Did you asked to Fabien at Master-Vox?

[lerameur]

I just need a couple, called master vox twice and told me they are all out.
How would you insert the asm code into picbasic:
http://www.geocities.com/constantine...ntent/dtmf.htm
I cant just do a simple code insert. dont know enough asm to just keep what I need.

k

[mister_e]

You replace BANK0, BANK1 etc bank calls with CHK?RP, you deleted their BANK macro.

Al variable are define in the regular way
COUNT VAR BYTE *** carefull it's a reserver word
RESULT VAR BYTE

DE is replace with DATA

forget all ORG

and when you use those variable in asm, you insert an underscore before.

They use interrupt.. look at the end of the PBP manual or use Darrel interrupt in ASM, AND forget the context save/restore section.

list is still long enough... i would probably suggest you to compile their code, see if it works, if so, add your own stuff in.

I can't remember to have messed with DTMF decoding 'till now.

Did you found a MT8870 somewhere?

[Darrel Taylor]

I remember helping Josuetas on a project like that.

But I can't seem to remember any words we used that would produce a search result.

As I recall he was implementing one of the Microchip Application Notes (AN???)
More searching is in order.
<br>

[mister_e]

AN257...
DTMF Detection Using PIC18 Microcontrollers
http://www.microchip.com/stellent/id...pnote=en024294

Which use some kind of FFT.

[skimask]

I remember helping Josuetas on a project like that.
But I can't seem to remember any words we used that would produce a search result.
As I recall he was implementing one of the Microchip Application Notes (AN???)
More searching is in order.
<br>

Ran across this...might be what you were looking for...
http://www.picbasic.co.uk/forum/showthread.php?t=6867