lpcware

GPIO Speed part 2 - Cortex M0

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by ArneB on Tue Apr 26 11:22:18 MST 2011
Hi guys,

very interesting discussion about the GPIO toggling speed. I am wondering, if i can use some of your  advices for the M0 (LPC111x familiy), too ? Currently i am struggling to  speed up the GPIO switching on a LPC1114, but the maximum rate i am  able to achieve is really slow, especially for turning an input to a  defined output (yes, RTFM was done, optimizations are enabled [-O3] :D).
Therefore i would like to ask the experts: Are there any special hints for the LPC111x part concerning the GPIOs ?

How about the new LPC12xx family ? I have just dived into the user  manual and it seems, that GPIO switching is much improved. Does anyone  have any experience ?

Outcomes