added setColor method to setRGB

README.md

@@ -2,7 +2,7 @@
 
 This library allows interfacing with an 18-pin RGB LCD display backlight connected directly to an Arduino board. It enables the user to control the RGB backlight using Arduino. This library is meant to be used alongside the LiquidCrystal library.
 
-On the RGB LCD, set pin 15 to HIGH. Pin 16 is red, pin 17 is green and pin 18 is blue. This sketch will loop through the different colors and display the color name. The code is based on a function that can be used to control the colors on an RGB LED.
+On the RGB LCD display module, set pin 15 to HIGH. Pin 16 is red, pin 17 is green and pin 18 is blue. This sketch will loop through the different colors and display the color name. The code is based on a function that can be used to control the colors on an RGB LED.
 
 ## Installation
 
@@ -40,4 +40,4 @@ void loop() {
 ```
 ## RGB LCD Displays
 
-Some of the displays out there are the Adafruit RGB LCD displays available in  [backlight positive](https://www.adafruit.com/product/398) and [backlight negative](https://www.adafruit.com/product/399). Another RGB LCD out there is [this one](https://www.amazon.com/Character-Negative-Backlight-Arduino-projects/dp/B00CRSF37I) from Winstar.
+Some of the RGB displays out there are the Adafruit RGB LCD displays available in  [backlight positive](https://www.adafruit.com/product/398) and [backlight negative](https://www.adafruit.com/product/399). Another RGB LCD available out there is [this one](https://www.amazon.com/Character-Negative-Backlight-Arduino-projects/dp/B00CRSF37I) from Winstar on Amazon.

src/Colors.cpp

@@ -5,10 +5,8 @@ const int Colors::RED[3] = {255, 10, 10};
 const int Colors::ORANGE[3] = {255, 100, 10};
 const int Colors::YELLOW[3] = {255, 255, 10};
 const int Colors::GREEN[3] = {10, 255, 10};
-const int Colors::TEAL[3] = {10, 128, 128};
 const int Colors::CYAN[3] = {10, 255, 255};
 const int Colors::BLUE[3] = {10, 10, 255};
-const int Colors::VIOLET[3] = {128, 10, 128};
 const int Colors::MAGENTA[3] = {255, 10, 255};
 const int Colors::WHITE[3] = {255, 255, 255};
 const int Colors::BLACK[3] = {0, 0, 0};

src/Colors.h

@@ -8,10 +8,8 @@ class Colors {
     static const int ORANGE[3];
     static const int YELLOW[3];
     static const int GREEN[3];
-    static const int TEAL[3];
     static const int CYAN[3];
     static const int BLUE[3];
-    static const int VIOLET[3];
     static const int MAGENTA[3];
     static const int WHITE[3];
     static const int BLACK[3];

src/LCD_BacklightRGB.cpp

@@ -17,20 +17,18 @@ void LCD_BacklightRGB::begin() {
   pinMode(_bluePin, OUTPUT);
 }
 
-void LCD_BacklightRGB::setRGB(int red, int green, int blue) {
-  red = constrain(red, minRGB, maxRGB);
-  green = constrain(green, minRGB, maxRGB);
-  blue = constrain(blue, minRGB, maxRGB);
-
+int LCD_BacklightRGB::setColor(int color) {
+  color = constrain(color, minRGB, maxRGB);
   #ifdef COMMON_ANODE
-    red = 255 - red;
-    green = 255 - green;
-    blue = 255 - blue;
+    color = 255 - color;
   #endif
+  return color;
+}
 
-  analogWrite(_redPin, red);
-  analogWrite(_greenPin, green);
-  analogWrite(_bluePin, blue);
+void LCD_BacklightRGB::setRGB(int red, int green, int blue) {
+  analogWrite(_redPin, setColor(red));
+  analogWrite(_greenPin, setColor(green));
+  analogWrite(_bluePin, setColor(blue));
 }
 
 void LCD_BacklightRGB::setDefaultColor(const int color[3]) {

src/LCD_BacklightRGB.h

@@ -6,6 +6,7 @@ class LCD_BacklightRGB {
 private:
   int _redPin, _greenPin, _bluePin;
   const int minRGB = 0, maxRGB = 255;
+  int setColor(int color);
   void setDefaultColor(const int color[3]);
 
 public: