> From: Don Ingram <don@...> > > Robert Wood wrote: > > >> What is the max required uart bit rate? << > > > > For the third UART I could get away 9600baud. > > > > YMMV, but the MAX3100 style of device always looks like > a CPU that I can't access & so I end up using a CPU that > I can access instead... Less cost, better availability, > more package options. Have to write handler code either > way. Ho, hum - bit-bang a few GPIO lines on the LPC. It works fine for us. We use a 38400 Hz interrupt on FIQ to reduce jitter, and a state machine to run the protocol. It's been tested with three bit-banged UARTs. If we can do this in high-level Forth without a line of assembler, the C-weenies ought to be able to cope ... Stephen P.S. implicit smiley! -- Stephen Pelc, stephen@... MicroProcessor Engineering Ltd - More Real, Less Time 133 Hill Lane, Southampton SO15 5AF, England tel: +44 (0)23 8063 1441, fax: +44 (0)23 8033 9691 web: http://www.mpeforth.com - free VFX Forth downloads
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SPI comms with another micro
2006-03-07 by Stephen Pelc
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