cy liang / Mbed OS blip_rainbow_mbed-os

blip_rainbow for Mbed OS 5.x

Dependencies:   PixelArray

main.cpp

Committer:
JacobBramley
Date:
2014-07-25
Revision:
0:60499ad28ea9
Child:
1:ca76237d2965

File content as of revision 0:60499ad28ea9:

#include "mbed.h"
#include "neopixel-spi.h"

// A backing store for the pixel data.
static size_t const count = 16;
neopixel::Pixel pixels[count];

// The pixel array control class.
neopixel::Array array(p30);

uint8_t IntensityForIndex(size_t index) {
  uint32_t c = index % 512;
  return (c >= 256) ? (256 - c) : c;
}

int main() {
  size_t offset = 0;
  while (1) {
    for (size_t i = 0; i < count; i++) {
      pixels[i].red   = IntensityForIndex((i * 10) + offset);
      pixels[i].green = IntensityForIndex((i * 20) + offset);
      pixels[i].blue  = IntensityForIndex((i * 40) + offset);
    }
    array.Update(pixels, count);
    wait_ms(10);
    offset++;
  }
}