Hi, Is there a way to detect the difference between the 7i90 and 7i43 boards over EPP communication? I was looking into these drivers and they are essentially the same (very small difference if you take the variable naming out of the picture).
I have been pondering to add yet another RPI driver doing EPP emulation on the GPIO pins. It would at least as fast as SPI communication and has the potential to be faster (especially if the EPP slave relaxes the timing a bit). The advantage of EPP emulation is in the reduced frequency on the pysical communication lines and would be at least four times lower. The physical bottleneck would be on strobe-timing. That may be an advantage in noisy environments and the overhead on the RPI is not any greater than using SPI (which is also polled in a busy-loop). If both 7i90 and 7i43 can be differentiated over EPP at runtime, then a unified EPP driver is more easily created. Otherwise you need a module parameter to distinguish or duplicate most of the code. Any comments, thoughts or suggestions? -- Greetings Bertho (disclaimers are disclaimed) ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
