> You can configure it to have an internal UART? Of course you can, > it's an FPGA. I should have thought of that. So then it needs an adapter > cable to bring the serial port signals from the accessory header out to a > DE-9S connector. However, they're at low logic levels, and may not work > reliably with a terminal or user PC that expects RS-232 levels. The obvious > solution is a "tool" board, with an RS-232 hardware interface on it. That's > one chip and a litle discrete glue to provide suitable voltages and I/O > overvoltage protection. If this goes ahead, let me know, and I can probably > whip up a circuit design and board layout instructions in short order. >
I did one myself for 5V TTL (to configure a LCD controller board). For use with OGP you just replace the IC with its 3.3V variant (MAX3232). http://diary.rozsnyo.com/2006/03/03/rs232ttl/ Daniel _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
