DJ Delorie <[EMAIL PROTECTED]> writes: > First off, I've got a board that has a USB chip (FTDI232R) connected > to an R8C/20, connected to a bunch of headers.
Update... It works! I had some problems programming the R8C, which turned out to be solder. I used solder wick to remove some shorts, but it sucked enough solder out to make some of the connections marginal. A swipe with the iron and a little more solder cleaned that up. I also added a pullup resistor on one signal line so I wouldn't have to program the 232R chip every time; that lets me use the stock FTDI serial drivers instead of the custom D2XX library. I've updated the web page with my changes: http://www.delorie.com/electronics/usb-gpio/ At the moment the one LED on the r8c is blinking like mad. I've plugged an RGB led board into the gpio pins; that blinks colors too. I have a symbol for the five-pin mini-B if anyone needs it, else it will show up in gedasymbols eventually. Or you can suck it out of the schematic file :-) _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
