TI_NEOPIXEL.cpp

00001 #include "TI_NEOPIXEL.h"
00002 #include "mbed.h"
00003 
00004 TI_NEOPIXEL::TI_NEOPIXEL(PinName input) : _ledStrip(input) {
00005 }
00006 
00007 void TI_NEOPIXEL::switchLightOff(int count) {
00008     
00009     rgb_color colors[count];
00010 
00011     for(int i = 0; i < count; i++) {
00012         colors[i] = (rgb_color) {0, 0, 0};
00013     }
00014     
00015     _ledStrip.write(colors, count);
00016 }
00017 
00018 void TI_NEOPIXEL::switchLightOn(int count) {
00019     
00020     rgb_color colors[count];
00021 
00022     for(int i = 0; i < count; i++) {
00023         colors[i] = (rgb_color) {50, 10, 170};
00024     }
00025     
00026     _ledStrip.write(colors, count);
00027 }
00028 
00029 void TI_NEOPIXEL::changeColor(int count, rgb_color rgbColor) {
00030     
00031     rgb_color colors[count];
00032 
00033     for(int i = 0; i < count; i++) {
00034         colors[i] = rgbColor;
00035     }
00036     
00037     _ledStrip.write(colors, count);
00038 }
00039 
00040 void TI_NEOPIXEL::changePointColor(int count, rgb_color topColor, rgb_color bottomColor) {
00041     
00042     rgb_color colors[count];
00043 
00044     for(int i = 0; i < count; i++) {
00045         if (i == 0) {
00046             colors[i] = topColor;
00047         } else if (i == count/2) {
00048             colors[i] = bottomColor;
00049         } else {
00050             colors[i] = (rgb_color) {0, 0, 0};
00051         }
00052     }
00053     
00054     _ledStrip.write(colors, count);
00055 }
00056 
00057 void TI_NEOPIXEL::circle(int count, rgb_color rgbColor) {
00058     
00059     for(int j = 0; j < count; j++) {
00060         rgb_color colors[count];
00061 
00062         for(int i = 0; i < count; i++) {
00063             if (j >= i) {
00064                 colors[i] = rgbColor;
00065             } else {
00066                 colors[i] = (rgb_color) {0, 0, 0};
00067             }
00068         }
00069     
00070         _ledStrip.write(colors, count);
00071         wait(0.07);
00072     }
00073 }
00074 
00075 void TI_NEOPIXEL::circleRainbow(int count) {
00076     
00077     for(int j = 0; j < count; j++) {
00078         rgb_color colors[count];
00079 
00080         for(int i = 0; i < count; i++) {
00081             if (j >= i) {
00082                 uint8_t phase = 256/count*i;
00083                 colors[i] = convertHsvToRgb(phase / 256.0, 1.0, 1.0);
00084             } else {
00085                 colors[i] = (rgb_color) {0, 0, 0};
00086             }
00087         }
00088     
00089         _ledStrip.write(colors, count);
00090         wait(0.07);
00091     }
00092 }
00093 
00094 rgb_color TI_NEOPIXEL::convertHsvToRgb(float h, float s, float v)
00095 {
00096     int i = floor(h * 6);
00097     float f = h * 6 - i;
00098     float p = v * (1 - s);
00099     float q = v * (1 - f * s);
00100     float t = v * (1 - (1 - f) * s);
00101     float r = 0, g = 0, b = 0;
00102     
00103     switch(i % 6){
00104         case 0: r = v; g = t; b = p; break;
00105         case 1: r = q; g = v; b = p; break;
00106         case 2: r = p; g = v; b = t; break;
00107         case 3: r = p; g = q; b = v; break;
00108         case 4: r = t; g = p; b = v; break;
00109         case 5: r = v; g = p; b = q; break;
00110     }
00111     
00112     return (rgb_color){r * 255, g * 255, b * 255};
00113 }