Parallax Propeller Chip and dialup modems
justin weber
Posts: 36
I had posted before about using a socketmodem on a chip with a BS2 micro and some serial boards from mulitlabs.net(ezvid and ezmouse), but I have waited awhile for another micro to make that easier. What could be easier than the Propeller chip(or cheaper)? All I would need to add to the Propeller demo board is a modem, And I currently have 5 socketmodems(33.6 kbps). I have two questions.
First, The socketmodem is 5V TTL levels and I'm not sure how to safely hook that up to the left over IO pins. I know to isolate the POTS tip/ring to the modem chip, but not what is necessary at the micro side.
Second, Does anybody have a primer or tutorial on how to hook up a modem device to the propeller or any micro for that matter? thanks for any responses.
First, The socketmodem is 5V TTL levels and I'm not sure how to safely hook that up to the left over IO pins. I know to isolate the POTS tip/ring to the modem chip, but not what is necessary at the micro side.
Second, Does anybody have a primer or tutorial on how to hook up a modem device to the propeller or any micro for that matter? thanks for any responses.
Comments
2) Use the FullDuplexSerial object in the library that comes with the Propeller Tool to send/receive serial information to/from the modem.