Hello Christian, On Thu, 2022-06-23 at 18:30 +0200, o...@c-mauderer.de wrote: > Another tricky part can be how to handle pins or pin groups. At the > moment I just used an "unsigned" for a single pin. That wouldn't be > able > to handle a pin group. Maybe a pin group needs it's own type or some > kind of extensible type. For the usual controller with <= 32 bit a > mask > in a uint32_t would be great. For other controllers maybe a longer > mask > is necessary. That's a bit tricky.
Thank you for the pseudocode, I think your method is better than mine. I am currently rewriting the code. However, I am not clear about pin groups: Is a "pin group" same as a "port"? Or does a group mean pins from that group can come from different ports/GPIO controllers? Also, I am thinking that maybe I can create an opaque type for pin mask that BSPs will implement, instead of a specific type like uint32_t. That type could be used as a long mask or just a pin number, depending on the BSP. Best, Duc Doan _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
