1
Dependencies: PixelArray WS2812 mbed
main.cpp
- Committer:
- yu10078999
- Date:
- 2016-09-07
- Revision:
- 0:2024cf2d17f8
File content as of revision 0:2024cf2d17f8:
#include "mbed.h" #include "WS2812.h" #include "PixelArray.h" #define WS2812_BUF 150 #define NUM_COLORS 6 #define NUM_LEDS_PER_COLOR 3 PixelArray px(WS2812_BUF); // See the program page for information on the timing numbers // The given numbers are for the K64F WS2812 ws(D9, WS2812_BUF, 10, 15, 20, 25); //WS2812 ws(D9, WS2812_BUF, 10, 15, 20, 35); int main() { ws.useII(WS2812::PER_PIXEL); // use per-pixel intensity scaling // set up the colours we want to draw with int colorbuf[NUM_COLORS] = {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 < WS2812_BUF; i++) { px.Set(i, colorbuf[(i / NUM_LEDS_PER_COLOR) % NUM_COLORS]); } // 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<WS2812_BUF; j++) { // px.SetI(pixel position, II value) px.SetI(j%WS2812_BUF, 0xf+(0xf*(j%NUM_LEDS_PER_COLOR))); } // Now the buffer is written, rotate it // by writing it out with an increasing offset while (1) { for (int z=WS2812_BUF; z >= 0 ; z--) { ws.write_offsets(px.getBuf(),z,z,z); wait(0.075); } } }