Diff: ShiftBrite.cpp

Revision:

0:5948048ae480

Child:

1:11ebaa7aaae9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ShiftBrite.cpp	Tue Jan 28 16:49:57 2014 +0000
@@ -0,0 +1,65 @@
+#include "ShiftBrite.h"
+
+//DigitalOut latch(p19);
+//SPI spi(p11, p12, p13);
+
+ShiftBrite::ShiftBrite(PinName spi1, PinName spi2, PinName spi3, PinName latch_) : spi(spi1, spi2, spi3), latch(latch_)
+{
+    spi.format(16, 0);
+    spi.frequency(500000);
+    latch = 0;
+}
+
+void ShiftBrite::writeCommand(int command)
+{
+    spi.write(command >> 16);
+    spi.write(command & 0x0000ffff);
+    latch = 1;
+    wait(0.00001);
+    latch = 0;
+}
+
+void ShiftBrite::writeInit(int red_level, int green_level, int blue_level)
+{
+    unsigned int Init_Command = 0x40000000;
+    Init_Command = 0x40000000|(blue_level<<20)|(red_level<<10)|green_level;
+    spi.write(Init_Command >> 16 & 0xFFFF);
+    spi.write(Init_Command & 0xFFFF);
+    wait(.000015);
+    latch=1;
+    wait(.000015);
+    latch=0;
+}
+
+void ShiftBrite::setColorRGB(int red, int green, int blue)
+{
+    int command = (blue << 20) | (red << 10) | green;
+    writeCommand(command);
+}
+
+void ShiftBrite::setColor(int color)
+{
+    setColorRGB(RED(color), GREEN(color), BLUE(color));
+}
+
+void ShiftBrite::fadeColor(int color1, int color2, float time)
+{
+    int red1 = RED(color1);
+    int green1 = GREEN(color1);
+    int blue1 = BLUE(color1);
+    int red2 = RED(color2);
+    int green2 = GREEN(color2);
+    int blue2 = BLUE(color2);
+    
+    float rstep = (red2 - red1) / 256.0;
+    float gstep = (green2 - green1) / 256.0;
+    float bstep = (blue2 - blue1) / 256.0;
+    float steptime = time / 256.0;
+    
+    for (int i = 0; i < 256; i++)
+    {
+        setColorRGB(red1 + (int)(rstep * i), green1 + (int)(gstep * i), blue1 + (int)(bstep * i));
+        wait(steptime);
+    }
+    setColorRGB(red2, green2, blue2);
+}