DJ Delorie wrote: >> Of course, the super deluxe solution would be PoE but that is a recipe >> for project drag because now you'd have to add a litte switch-mode >> converter. > > I've looked at PoE before. I need an AC reference signal anyway, I'll > just use that. I mean... I'm inside the source of power for the > house, I shouldn't need to go elsewhere for power ;-) > >>> Of course, with ethernet, I need a separate programming circuit. >> If they all got a different IP address wouldn't it work with just >> routers and hubs? The last 4:1 hub I bought was under $10, IIRC from >> Walmart. Plus a bootloader in the uC in case you need to re-flash that. > > The R8C has a built-in bootloader that uses a serial port and two > control pins (mode and reset). I use an FTDI usb to serial chip to > interface to that. If I use ethernet for communication, I still need > some connection to the serial port and control pins. >
I don't know the R8C. But for other uC such as the MSP430 you can write a little "Delorie-Bootloader" that works without the manufacturer prescribed HW-handles. People have, for example, written bootloaders for rough environment use where you can pipe the whole new code into it via a little photodiode. The downside is that all this adds to the project time. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
