HSEROUT help with HT9200 DTMF encoder

[dbachman]

I am wondering if I could use the HSEROUT command - HSEROUT 8,3,2,6,5,4,3
for example as a phone number and input this into a HT9200 DTMF encoder as serial into it. How could I basically slow it down to be able to hear the tones? Can you somehow select 4 bit code for 8, serially send that and somehow pause for a 20 ms and then send the 3 ect... Probably not. I can clock the HT9200 to produce the tone using parallel inputs but I wanted to try something serial. Probably way over my head.

Thanks, Don

[aratti]

Don, with Pic Basic Pro (see page 61 of user manual) you can produce DTMF directly out a pic pin.

You can serially send your number to the pic which in turn will send out the corresponding DTMF code. In this way, you don't need to use a HT9200.

Al.