Friends - On Mon, Nov 06, 2006 at 07:08:48PM -0500, DJ Delorie wrote: > > DJ, Are you writing code for the Dallas 1-wire protocol? Neat. > Lots of bit banging.
If anyone wants FPGA code for 1-Wire, I have some. You can either click through the stupid (but innocuous) licence agreement at http://recycle.lbl.gov/llc-suite/, or e-mail me. I have two versions: one is a very simple one-bit transfer, minimal gates, but takes the real-time burden off the host computer. The other does enough sequencing to read a temperature from a DS1822; all the computer has to do is write the "stimulus" message to the FPGA at the beginning, wait 750 ms, and read the "response" message at the end. With C code, tested in hardware, and including a simulation test bench set up to do regression testing. - Larry _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
