yacine sidhoum / Mbed 2 deprecated WS2812_Example2_random_couleur_position_led_v4

control multi animation ledws2812 by usb serial com

Dependencies:   PixelArray WS2812 mbed

Fork of WS2812_Example by Brian Daniels

main.cpp@1:e04a0ecefa29, 2015-02-12 (annotated)

Committer:
bridadan
Date:
Thu Feb 12 20:20:54 2015 +0000
Revision:
1:e04a0ecefa29
Parent:
0:12cb6f0c2788
Child:
2:cb82a3dc4031
Removed platform dependent code from library. Cleaned up code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bridadan 0:12cb6f0c2788 1 #include "mbed.h"
bridadan 0:12cb6f0c2788 2 #include "WS2812.h"
bridadan 0:12cb6f0c2788 3 #include "PixelArray.h"
bridadan 0:12cb6f0c2788 4
bridadan 0:12cb6f0c2788 5 #define WS2812_BUF 60
bridadan 0:12cb6f0c2788 6
bridadan 0:12cb6f0c2788 7 PixelArray px(WS2812_BUF);
bridadan 0:12cb6f0c2788 8
bridadan 1:e04a0ecefa29 9 // See the program page for information on the timing numbers (eg: 0, 5, 5, 0)
bridadan 1:e04a0ecefa29 10 // The given numbers are for the K64F
bridadan 1:e04a0ecefa29 11 WS2812 ws(D9,WS2812_BUF, 0, 5, 5, 0);
bridadan 1:e04a0ecefa29 12
bridadan 0:12cb6f0c2788 13 DigitalOut led(LED1);
bridadan 0:12cb6f0c2788 14
bridadan 0:12cb6f0c2788 15 int main()
bridadan 0:12cb6f0c2788 16 {
bridadan 0:12cb6f0c2788 17
bridadan 1:e04a0ecefa29 18 ws.useII(WS2812::PER_PIXEL); // use per-pixel intensity scaling
bridadan 0:12cb6f0c2788 19
bridadan 0:12cb6f0c2788 20 // set up the colours we want to draw with
bridadan 0:12cb6f0c2788 21 int colorbuf[6] = {0x2f0000,0x2f2f00,0x002f00,0x002f2f,0x00002f,0x2f002f};
bridadan 0:12cb6f0c2788 22
bridadan 0:12cb6f0c2788 23 // for each of the colours (j) write out 10 of them
bridadan 0:12cb6f0c2788 24 // the pixels are written at the colour*10, plus the colour position
bridadan 0:12cb6f0c2788 25 // all modulus 60 so it wraps around
bridadan 0:12cb6f0c2788 26 for (int i =0; i<6; i++) {
bridadan 0:12cb6f0c2788 27 for (int j=0; j<10; j++) {
bridadan 0:12cb6f0c2788 28 px.Set(((i*10)+j)%60,colorbuf[i]);
bridadan 0:12cb6f0c2788 29 }
bridadan 0:12cb6f0c2788 30 }
bridadan 0:12cb6f0c2788 31
bridadan 0:12cb6f0c2788 32 // now all the colours are computed, add a fade effect using intensity scaling
bridadan 0:12cb6f0c2788 33 // compute and write the II value for each pixel
bridadan 0:12cb6f0c2788 34 for (int j=0; j<60; j++) {
bridadan 0:12cb6f0c2788 35 // px.SetI(pixel position, II value)
bridadan 0:12cb6f0c2788 36 px.SetI(j%60, 0xf+(0xf*(j%10)));
bridadan 0:12cb6f0c2788 37 }
bridadan 0:12cb6f0c2788 38
bridadan 0:12cb6f0c2788 39
bridadan 0:12cb6f0c2788 40 // Now the buffer is written, rotate it
bridadan 0:12cb6f0c2788 41 // by writing it out with an increasing offset
bridadan 0:12cb6f0c2788 42 while (1) {
bridadan 0:12cb6f0c2788 43 for (int z=59; z >= 0 ; z--) {
bridadan 0:12cb6f0c2788 44 ws.write_offsets(px.getBuf(),z,z,z);
bridadan 0:12cb6f0c2788 45 wait(0.075);
bridadan 0:12cb6f0c2788 46 }
bridadan 0:12cb6f0c2788 47 }
bridadan 0:12cb6f0c2788 48
bridadan 0:12cb6f0c2788 49 }