RGB LEDS of the neopixels
Dependencies: C12832_lcd PixelArray WS2812 mbed
Fork of WS2812_Example by
Diff: main.cpp
- Revision:
- 0:12cb6f0c2788
- Child:
- 1:e04a0ecefa29
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Thu Feb 12 19:20:00 2015 +0000 @@ -0,0 +1,46 @@ +#include "mbed.h" +#include "WS2812.h" +#include "PixelArray.h" + +#define WS2812_BUF 60 + +WS2812 ws(D9,WS2812_BUF); +PixelArray px(WS2812_BUF); + +DigitalOut led(LED1); + +int main() +{ + + ws.useII(2); // use per-pixel intensity scaling + + // set up the colours we want to draw with + int colorbuf[6] = {0x2f0000,0x2f2f00,0x002f00,0x002f2f,0x00002f,0x2f002f}; + + // for each of the colours (j) write out 10 of them + // the pixels are written at the colour*10, plus the colour position + // all modulus 60 so it wraps around + for (int i =0; i<6; i++) { + for (int j=0; j<10; j++) { + px.Set(((i*10)+j)%60,colorbuf[i]); + } + } + + // now all the colours are computed, add a fade effect using intensity scaling + // compute and write the II value for each pixel + for (int j=0; j<60; j++) { + // px.SetI(pixel position, II value) + px.SetI(j%60, 0xf+(0xf*(j%10))); + } + + + // Now the buffer is written, rotate it + // by writing it out with an increasing offset + while (1) { + for (int z=59; z >= 0 ; z--) { + ws.write_offsets(px.getBuf(),z,z,z); + wait(0.075); + } + } + +}