DTMF decoding

[maria]

Hi there,

I'm using a PIC 16F877 with PIC Basic and a MT8870D chip and I need to get the PIC to receive and process the incoming signals from the DTMF decoder IC. Does anyone out there have some sample code I could use for this?

Many Thanks!

Maria.

[d1camero]

Might this help? Its assembler, but explains the MT8870D very nicely.

http://www.kwantlen.bc.ca/electech/FinalProjects/p2001/dtmf_dialer.pdf




Or take a walk on the wild side and use the CM8880:

http://www.parallax.com/dl/docs/cols/nv/vol1/col/nv7.pdf



Oh oh. Melanie is going to get you. Look what I found in the archive:

http://list.picbasic.com/forum/messages/6851/6960.html?

have fun!

Don

[maria]

Thanks Don! Will have a look & give it a go :)

[maria]

hi there,

i've had a look at the links you (Don) sent and they are a little too complex for what i need to do and what i can understand with my very limited basic knowledge of PICs, PIC Basic & DTMF signalling - does anyone out there have a very simple PIC Basic program to receicve the signals from an MT8870D and display them on a simple 7 segment LED display?

thank you! :)

best wishes,
maria.