Thread: Serial communication help
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Unread 26-08-2008, 17:08
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Re: Serial communication help
You can use the TTL serial port directly without any extra adapters or hardware. The SpeakJet chip does not use RS-232 signal levels and you'll fry it if you use the programming port. There are code samples on this site that explain how to configure and use the TTL serial port on the RC. I didn't check the spec sheet for the load, but you should be able to power the SpeakJet chip directly from an unused IO line on the RC. If you have the training board then it would be easier to use the programming port since the training board has the RS-232 hardware and socket installed.