> On Sep 3, 2015, at 11:30 , William Hermans <[email protected]> wrote: > > SPI has a dedicated CS line. You can and that with a GPIO pin and create more > CS signals if you like. > > Wonder why more people do not realize this ? SPI on Linux is software . . .a > CS "line" pin, etc is just a toggled GPIO high/low at the appropriate times. > . . .
I'm actually well aware of how SPI works. What's harder to know is exactly why a particular SPI bus might not be available for use due to conflicts. Some processors take over control of the CS pin(s), and you can't "just" use a GPIO as another CS line. Add to that multiple software entities trying to use the SPI peripheral, and things can get impossible very fast. -- Rick Mann [email protected] -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
