Hacked Gadgets Forum

December 18, 2014

WS2812B LED Driver Project

at 1:53 pm. Filed under Cool Gadgets, DIY Hacks

WS2812B LED Driver Project

 

JEELABS did a nice WS2812B LED Driver Project that uses an ARM LPC810 running at 30 MHz to get things done.

“Sending 12 bits @ 2.4 MHz takes 5 microseconds. If we were to set the LPC810 to run at its maximum 30 MHz clock, we could probably drive the SPI hardware entirely via interrupts, but for a simple timed example this is not really necessary. Instead, we can let the SysTick timer interrupt the polling loop used to drive the SPI bus – without losing track of time.”


 

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