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RGBLamp.cpp
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RGBLamp.cpp
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/*
* RGBLamp
* Version 1 July, 2016
* Copyright 2016 Sebastian Wassberg
*/
#include "RGBLamp.h"
RGBLamp::RGBLamp() {
}
// Save the input pin numbers and hw config to library variables and turn lamp off
void RGBLamp::begin(byte hardwareConfig, uint8_t red_pin, uint8_t green_pin, uint8_t blue_pinPin )
{
if (hardwareConfig == 1) {
commonCathode = false;
}
pin_r = red_pin;
pin_g = green_pin;
pin_b = blue_pinPin;
pinMode(pin_r, OUTPUT);
pinMode(pin_g, OUTPUT);
pinMode(pin_b, OUTPUT);
setColor(0, 0, 0);
}
void RGBLamp::setColor(uint8_t red, uint8_t green, uint8_t blue)
{
isBlinking = false;
setColorPriv(red, green, blue);
setNewTarget(red, green, blue);
}
void RGBLamp::setColor(uint32_t color)
{
setColor((color & 0xFF0000) >> 16, (color & 0x00FF00) >> 8, color & 0x0000FF);
}
void RGBLamp::off()
{
setColor(0, 0, 0);
}
void RGBLamp::update()
{
if (millis() >= timeForNextIteration) {
rgbLampMain_10ms(0);
timeForNextIteration = millis() + 10;
}
}
bool RGBLamp::equalToTarget(uint8_t red, uint8_t green, uint8_t blue)
{
return (red == target_r && green == target_g && blue == target_b);
}
bool RGBLamp::equalToBlink(uint8_t red, uint8_t green, uint8_t blue)
{
return (red == RGBLamp::blink_r && green == RGBLamp::blink_g && blue == RGBLamp::blink_b);
}
void RGBLamp::setNewTarget(uint8_t red, uint8_t green, uint8_t blue) {
target_r = red;
target_b = blue;
target_g = green;
int16_t diff_r = target_r - curr_r;
int16_t diff_g = target_g - curr_g;
int16_t diff_b = target_b - curr_b;
// calculate the width of each step
step_r = (diff_r / (fadeDuration_ms / 10));
step_g = (diff_g / (fadeDuration_ms / 10));
step_b = (diff_b / (fadeDuration_ms / 10));
}
void RGBLamp::fadeTo(uint8_t red, uint8_t green, uint8_t blue)
{
isBlinking = false;
if(equalToTarget(red, green, blue)) {
return; //we are aleardy heading there!
}
setNewTarget(red, green, blue);
}
void RGBLamp::fadeTo(uint32_t color)
{
fadeTo((color & 0xFF0000) >> 16, (color & 0x00FF00) >> 8, color & 0x0000FF);
}
void RGBLamp::blink(uint32_t color)
{
blink((color & 0xFF0000) >> 16, (color & 0x00FF00) >> 8, color & 0x0000FF);
}
void RGBLamp::blink(uint8_t red, uint8_t green, uint8_t blue) {
isBlinking = true;
if (equalToBlink(red, green, blue)) {
return;
}
blink_r = red;
blink_g = green;
blink_b = blue;
setNewTarget(red, green, blue);
}
//Checks so we dont go past our target when moving towards it
uint8_t safeStep(uint8_t target, uint8_t color, int16_t step) {
int16_t nextStep = color + step;
if (step >= 0) {
if (nextStep > target) {
return target;
}
}
if (step < 0) {
if (nextStep < target) {
return target;
}
}
return nextStep;
}
//Sets color on lamp and update internal current color values
void RGBLamp::setColorPriv(uint8_t red, uint8_t green, uint8_t blue)
{
if (commonCathode) {
analogWrite(pin_r, red);
analogWrite(pin_g, green);
analogWrite(pin_b, blue);
}
else {
analogWrite(pin_r, 255 - red);
analogWrite(pin_g, 255 - green);
analogWrite(pin_b, 255 - blue);
}
curr_r = red;
curr_b = blue;
curr_g = green;
}
//If we are not on target color we move towards it. If we are on target but is blinking we set a new target.
void RGBLamp::rgbLampMain_10ms(uint8_t id)
{
if (!equalToTarget(curr_r, curr_g, curr_b)) {
setColorPriv(safeStep(target_r, curr_r, step_r), safeStep(target_g, curr_g, step_g), safeStep(target_b, curr_b, step_b));
}
else
{
if (isBlinking) {
uint8_t temp_r = (curr_r == 0) ? blink_r : 0;
uint8_t temp_g = (curr_g == 0) ? blink_g : 0;
uint8_t temp_b = (curr_b == 0) ? blink_b : 0;
setNewTarget(temp_r, temp_g, temp_b);
}
}
}