#arduino#avr#registermanipulation
106K subscribers • 1 video on Hallway
Intermediate. Assumes working knowledge.
48K views10 years ago1 recommendation
Systems programmingHardwareEmbedded systemsPerformance and optimization
Kevin Darrah demonstrates how to speed up Arduino digital writes using direct port and register manipulation instead of digitalWrite.
In this video I'll show you how flipping bits in ports and registers work. I was doing a lot of this in the Low Power Series videos. But remember that I did the same kind of thing in my LED Cube project, but that was to speed up the turn ON and OFF of digital pins. I never got into how much faster it was, so in this video we'll measure it! Here's the link to the cheater board I designed - I've been sending these out as a thank-you to the Patrons of this channel: kevindarrah.com/wiki/index.php?title=Cheater_Board Check out my Tindie store (trigBoard is available) tindie.com/stores/kdcircuits/ Thanks to all the Patrons for dropping a few bucks in the tip jar to help make these videos happen! patreon.com/kdarrah Twitter: twitter.com/KDcircuits For inquiries or design services: kdcircuits.comWhat people say. Recommended as a practical demonstration of the performance difference between Arduino's digitalWrite and direct register manipulation.
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On “Arduino libraries vs. directly writing to registers (debate/details in comments)”