WS2812 demo with MSP430 5529 launchpad

[marfis 3]

Hi,

 

here is a small project that runs on the MSP4305529 launchpad:

https://github.com/hoihu/WS2812

 

that supports the 800kHz WS2812 LED strips (e.g. http://www.adafruit.com/products/1138 and others) by using the DMA controller rather than a while loop.

 

The idea is based on the SPI approach by RobG:

http://forum.43oh.com/topic/3971-wearable-ws2812-strip-controllers/

 

+ work is delegated to DMA, frees foreground application (easier to code color changes etc)

- needs app. 8x more RAM, as the LED bits must be deflated in advance in memory

 

The main loop shows a nice looking color fading effect:

IMG_1090.MOV

 

any comments/extensions are appreciated.