Hi Gabriel,

The uart hardware will generate the second stop bit. Basically TB8 is the 9th data bit. You could have it be the parity bit for data if you like. If set looks just like a stop bit.

By "pause between bytes," do you mean the "break" at between packets? You should be able to activate the TXD port pin, turning it low to cause the bus to be driven low, with its timing set by one of your timers. Then bring it high again for following mark, then let the uart start sending data again. According to one site the break should be low for a MINIMUM of 88 usec, while the user site Phillip referenced lists the break time of a MAXIMUM of 88 usec. I suspect the latter is incorrect.

See http://www.dmx512-online.com/packt.html for another site to compare.

If you're actually concerned about the pause between bytes, the minimum is 0 usec, so don't worry about it. Just send the next byte.

Dennis