neopixel.h

00001 #ifndef NEOPIXEL_H
00002 #define NEOPIXEL_H
00003 #include "mbed.h"
00004 
00005 /*
00006 // Example
00007 
00008 NeoPixelOut npx(D12);
00009 
00010 int main() {
00011     wait(0.2); // wait for HSE to stabilize
00012     
00013     npx.global_scale = 1.0f; // Adjust brightness
00014     npx.normalize = true; // Equalize brightness to make r + g + b = 255
00015     
00016     Pixel strip[6];
00017     strip[0].hex = 0xFF0000;
00018     strip[1].hex = 0xFFFF00;
00019     strip[2].hex = 0x00FF00;
00020     strip[3].hex = 0x00FFFF;
00021     strip[4].hex = 0x0000FF;
00022     strip[5].hex = 0xFF00FF;
00023     
00024     npx.send(strip, 6);
00025     
00026     while(1);
00027 }
00028 */
00029 
00030 
00031 
00032 /**
00033  * @brief Struct for easy manipulation of RGB colors.
00034  *
00035  * Set components in the xrgb.r (etc.) and you will get
00036  * the hex in xrgb.num.
00037  */
00038 union Pixel {
00039     /** Struct for access to individual color components */
00040     struct __attribute__((packed)) {
00041         uint8_t b;
00042         uint8_t g;
00043         uint8_t r;
00044         uint8_t a; // unused
00045     };
00046 
00047     /** RGB color as a single uint32_t */
00048     uint32_t hex;
00049 };
00050 
00051 
00052 class NeoPixelOut : DigitalOut {
00053 private:
00054     void byte(uint32_t b);    
00055     
00056 public:
00057     bool normalize;
00058     float global_scale; 
00059 
00060     NeoPixelOut(PinName pin);
00061     
00062     void send(Pixel *colors, uint32_t count, bool flipwait=true);
00063     
00064     /** Wait long enough to make the colors show up */
00065     void flip(void);
00066 };
00067 
00068 
00069 #endif /* NEOPIXEL_H */