Revision 0:8f07ffe423ce, committed 2015-10-29

Comitter:

wqz9822

Date:

Thu Oct 29 16:17:50 2015 +0000

Commit message:

RGB LED Library;

Changed in this revision

diff -r 000000000000 -r 8f07ffe423ce color.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/color.cpp	Thu Oct 29 16:17:50 2015 +0000
@@ -0,0 +1,17 @@
+#include "color.h"
+
+LEDColor:: LEDColor(int r, int g, int b)
+    : red(r/255.0), green(g/255.0), blue(b/255.0)
+{
+}
+//Operator overload to adjust brightness with no color change
+LEDColor operator * (const LEDColor& x, const float& b)
+{
+    return LEDColor(x.red*b,x.green*b,x.blue*b);
+}
+//Operator overload to add colors
+LEDColor operator + (const LEDColor& x, const LEDColor& y)
+{
+    return LEDColor(x.red+y.red,x.green+y.green,x.blue+y.blue);
+}
+ 
\ No newline at end of file

diff -r 000000000000 -r 8f07ffe423ce color.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/color.h	Thu Oct 29 16:17:50 2015 +0000
@@ -0,0 +1,15 @@
+
+#ifndef COLOR_H
+#define COLOR_H
+
+//class for 3 PWM color values for RGBLED
+class LEDColor
+{
+public:
+    LEDColor(int r, int g, int b);
+    float red;
+    float green;
+    float blue;
+};
+
+#endif

diff -r 000000000000 -r 8f07ffe423ce rgbLed.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rgbLed.cpp	Thu Oct 29 16:17:50 2015 +0000
@@ -0,0 +1,35 @@
+#include "rgbLed.h"
+
+#define COMMON_ANODE
+ 
+RGBLed::RGBLed (PinName redpin, PinName greenpin, PinName bluepin)
+    : _redpin(redpin), _greenpin(greenpin), _bluepin(bluepin)
+{
+    //50Hz PWM clock default a bit too low, go to 2000Hz (less flicker)
+    _redpin.period(0.0005);
+}
+ 
+void RGBLed::write(float red,float green, float blue)
+{
+    #ifdef COMMON_ANODE
+    red = 1 - red;
+    green = 1 - green;
+    blue = 1 - blue;
+    #endif
+    _redpin = red;
+    _greenpin = green;
+    _bluepin = blue;
+}
+
+void RGBLed::write(LEDColor c)
+{
+    #ifdef COMMON_ANODE
+        _redpin = 1 - c.red;
+        _greenpin = 1 - c.green;
+        _bluepin = 1 - c.blue;
+    #else
+        _redpin = c.red;
+        _greenpin = c.green;
+        _bluepin = c.blue;
+    #endif
+}

diff -r 000000000000 -r 8f07ffe423ce rgbLed.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rgbLed.h	Thu Oct 29 16:17:50 2015 +0000
@@ -0,0 +1,22 @@
+#include "mbed.h"
+#include "color.h"
+
+#ifndef RGB_H
+#define RGB_H
+//Class to control an RGB LED using three PWM pins
+class RGBLed
+{
+public:
+    RGBLed(PinName redpin, PinName greenpin, PinName bluepin);
+    void write(float red,float green, float blue);
+    void write(LEDColor c);
+    RGBLed operator = (LEDColor c) {
+        write(c);
+        return *this;
+    };
+private:
+    PwmOut _redpin;
+    PwmOut _greenpin;
+    PwmOut _bluepin;
+};
+#endif
\ No newline at end of file