I looked over that file, and it seems like its a little overkill. I know that the Basic Stamp has an instruction that can do that, I wonder how they actually work. I was going to try it out on my Basic Stamp 2sx and look at the waveform it creates on a scope. So I got out my neglected Basic Stamp starter kit I've never used, and when I power it up the microcontroller on the stamp and the 5 volt regulator start burning up (with nothing attached except the power supply and PC serial link). Unfortunately its been almost one year since I got it, so I don't know if Parallax would still be willing to make an exchange for it. There goes $160. Does anyone have the PicBasic compiler? That has a DTMFout instruction, I wonder what that looks like in assembly. --Nick --- Douglas Wood wrote: > Microchip has an app. note on this very subject (AN > 543). > > Douglas Wood > Software Engineer > dbwood@kc.rr.com > > Home of the EPICIS Development System for the PIC > and SX > http://epicis.piclist.com > > ----- Original Message ----- > From: "Nick Masluk" > To: > Sent: Saturday, July 28, 2001 10:32 PM > Subject: [PIC]: DTMF Generation > > > > How would DTMF be generated using a PIC? I've > > searched the net, but can't seem to find any > example > > source code. > > > > --Nick > > > > __________________________________________________ > > Do You Yahoo!? > > Make international calls for as low as $.04/minute > with Yahoo! Messenger > > http://phonecard.yahoo.com/ > > > > -- > > http://www.piclist.com#nomail Going offline? Don't > AutoReply us! > > email listserv@mitvma.mit.edu with SET PICList > DIGEST in the body > > > > > > -- > http://www.piclist.com#nomail Going offline? Don't > AutoReply us! > email listserv@mitvma.mit.edu with SET PICList > DIGEST in the body > > __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/ -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body