cy liang / Mbed OS blip_rainbow_mbed-os

blip_rainbow for Mbed OS 5.x

Dependencies:   PixelArray

main.cpp@0:60499ad28ea9, 2014-07-25 (annotated)

Committer:
JacobBramley
Date:
Fri Jul 25 15:22:59 2014 +0000
Revision:
0:60499ad28ea9
Child:
1:ca76237d2965
Demo for the neopixel-spi library. This is untested because I don't yet have any NeoPixels to test it with.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JacobBramley 0:60499ad28ea9 1 #include "mbed.h"
JacobBramley 0:60499ad28ea9 2 #include "neopixel-spi.h"
JacobBramley 0:60499ad28ea9 3
JacobBramley 0:60499ad28ea9 4 // A backing store for the pixel data.
JacobBramley 0:60499ad28ea9 5 static size_t const count = 16;
JacobBramley 0:60499ad28ea9 6 neopixel::Pixel pixels[count];
JacobBramley 0:60499ad28ea9 7
JacobBramley 0:60499ad28ea9 8 // The pixel array control class.
JacobBramley 0:60499ad28ea9 9 neopixel::Array array(p30);
JacobBramley 0:60499ad28ea9 10
JacobBramley 0:60499ad28ea9 11 uint8_t IntensityForIndex(size_t index) {
JacobBramley 0:60499ad28ea9 12 uint32_t c = index % 512;
JacobBramley 0:60499ad28ea9 13 return (c >= 256) ? (256 - c) : c;
JacobBramley 0:60499ad28ea9 14 }
JacobBramley 0:60499ad28ea9 15
JacobBramley 0:60499ad28ea9 16 int main() {
JacobBramley 0:60499ad28ea9 17 size_t offset = 0;
JacobBramley 0:60499ad28ea9 18 while (1) {
JacobBramley 0:60499ad28ea9 19 for (size_t i = 0; i < count; i++) {
JacobBramley 0:60499ad28ea9 20 pixels[i].red = IntensityForIndex((i * 10) + offset);
JacobBramley 0:60499ad28ea9 21 pixels[i].green = IntensityForIndex((i * 20) + offset);
JacobBramley 0:60499ad28ea9 22 pixels[i].blue = IntensityForIndex((i * 40) + offset);
JacobBramley 0:60499ad28ea9 23 }
JacobBramley 0:60499ad28ea9 24 array.Update(pixels, count);
JacobBramley 0:60499ad28ea9 25 wait_ms(10);
JacobBramley 0:60499ad28ea9 26 offset++;
JacobBramley 0:60499ad28ea9 27 }
JacobBramley 0:60499ad28ea9 28 }