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Created Example 11 

And added static HSVtoRGB method to PwmPin
This commit is contained in:
Gregg 2020-08-02 11:12:53 -05:00
parent 70c62367cd
commit 1ebce9ab92
9 changed files with 551 additions and 1 deletions
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45
examples/Advanced/11-RGB_LED/11-RGB_LED.ino Normal file
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////////////////////////////////////////////////////////////
// //
// HomeSpan: A HomeKit implementation for the ESP32 //
// ------------------------------------------------ //
// //
// Example 11: Controlling an RGB LED using the //
// LightBulb Service //
// //
////////////////////////////////////////////////////////////
#include "HomeSpan.h"
#include "DEV_Identify.h"
#include "DEV_LED.h"
void setup() {
// Example 11 illustrates how to control an RGB LED to set any color and brightness.
// The config below should look familiar by now. We've created a new derived Service,
// call RgbLED to house all the required logic. You'll find all the code in DEV_LED.h.
Serial.begin(115200);
homeSpan.begin(Category::Lighting,"HomeSpan LEDs");
new SpanAccessory();
new DEV_Identify("Bridge #1","HomeSpan","123-ABC","HS Bridge","0.9",3);
new Service::HAPProtocolInformation();
new Characteristic::Version("1.1.0");
new SpanAccessory();
new DEV_Identify("LED Blinker","HomeSpan","123-ABC","20mA LED","0.9",0);
new DEV_RgbLED(0,1,2,32,22,23); // An RGB LED requires three PWM channels and three pins to be specified
} // end of setup()
//////////////////////////////////////
void loop(){
homeSpan.poll();
} // end of loop()

44
examples/Advanced/11-RGB_LED/11-RGB_LED/11-RGB_LED.ino Normal file
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////////////////////////////////////////////////////////////
// //
// HomeSpan: A HomeKit implementation for the ESP32 //
// ------------------------------------------------ //
// //
// Example 9: Logging messages to the Serial Monitor //
// //
// //
////////////////////////////////////////////////////////////
#include "HomeSpan.h"
#include "DEV_LED.h"
#include "DEV_Identify.h"
void setup() {
// Example 11 illustrates how to control an RGB LED to set any color and brightness.
// The config below should look familiar by now. We've created a new derived Service,
// call RgbLED to house all the required logic. You'll find all the code in DEV_LED.h.
Serial.begin(115200);
homeSpan.begin(Category::Lighting,"HomeSpan LEDs");
new SpanAccessory();
new DEV_Identify("Bridge #1","HomeSpan","123-ABC","HS Bridge","0.9",3);
new Service::HAPProtocolInformation();
new Characteristic::Version("1.1.0");
new SpanAccessory();
new DEV_Identify("LED Blinker","HomeSpan","123-ABC","20mA LED","0.9",0);
new DEV_RgbLED(0,1,2,32,22,23); // An RGB LED requires three PWM channels and three pins to be specified
} // end of setup()
//////////////////////////////////////
void loop(){
homeSpan.poll();
} // end of loop()

63
examples/Advanced/11-RGB_LED/11-RGB_LED/DEV_Identify.h Normal file
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//////////////////////////////////
// DEVICE-SPECIFIC SERVICES //
//////////////////////////////////
// Here we define the DEV_Identify Service as derived class of AccessoryInformation
struct DEV_Identify : Service::AccessoryInformation {
int nBlinks; // number of times to blink built-in LED in identify routine
SpanCharacteristic *identify; // reference to the Identify Characteristic
// Next we define the constructor using all the arguments needed to implement the required Characteristics
// of AccessoryInformation, plus one extra argument at the end called "nBlinks" we will use to specify how many
// times HomeSpan should blink the built-in LED when HomeKit calls this device's Identify routine during pairing.
DEV_Identify(char *name, char *manu, char *sn, char *model, char *version, int nBlinks) : Service::AccessoryInformation(){
new Characteristic::Name(name); // create all the required Characteristics with values set based on above arguments
new Characteristic::Manufacturer(manu);
new Characteristic::SerialNumber(sn);
new Characteristic::Model(model);
new Characteristic::FirmwareRevision(version);
identify=new Characteristic::Identify(); // store a reference to the Identify Characteristic for use below
this->nBlinks=nBlinks; // store the number of times to blink the built-in LED
pinMode(LED_BUILTIN,OUTPUT); // make sure built-in LED is set for output
}
// How HomeKit Identifies Devices:
//
// When HomeKit first pairs with a new device it "calls" that device's identify routine for every defined Accessory.
// To do so, HomeKit requests the Identify Characteristic for each defined AccessoryInformation Service to be set to "true".
// The Identify Characteristic is write-only, so no value is ever stored, even though HomeKit is requesting its value
// be updated. We can therefore use the same update() method as if the Identify Characteristic was the same as any
// other boolean Characteristic.
// There are many ways to implement some form of identification. For an LED, you could blink it one or more times.
// For a LightBulb, you can flash it on and off. For window shade, you could raise and lower it.
// Most commerical devices don't do anything. Because HomeSpan can be used to control many different types of
// device, below we implement a very generic routine that simply blinks the internal LED of the ESP32 the
// number of times specified above. In principle, this code could call a user-defined routine that is different
// for each physcially-attached device (light, shade, fan, etc), but in practice this is overkill.
// Note that the blink routine below starts by turning off the built-in LED and then leaves it on once it has blinked
// the specified number of times. This is because when HomeSpan starts up if confirms to user that it has connected
// to the WiFi network by turning on the built-in LED. Thus we want to leave it on when blinking is completed.
StatusCode update(){
for(int i=0;i<nBlinks;i++){
digitalWrite(LED_BUILTIN,LOW);
delay(250);
digitalWrite(LED_BUILTIN,HIGH);
delay(250);
}
return(StatusCode::OK);
} // update
};

202
examples/Advanced/11-RGB_LED/11-RGB_LED/DEV_LED.h Normal file
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////////////////////////////////////
// DEVICE-SPECIFIC LED SERVICES //
////////////////////////////////////
#include "extras/PwmPin.h" // allows PWM control of LED brightness
struct DEV_LED : Service::LightBulb { // ON/OFF LED
int ledPin; // pin number defined for this LED
SpanCharacteristic *power; // reference to the On Characteristic
DEV_LED(int ledPin) : Service::LightBulb(){ // constructor() method
power=new Characteristic::On();
this->ledPin=ledPin;
pinMode(ledPin,OUTPUT);
Serial.print("Configuring On/Off LED: Pin="); // initialization message
Serial.print(ledPin);
Serial.print("\n");
} // end constructor
StatusCode update(){ // update() method
LOG1("Updating On/Off LED on pin=");
LOG1(ledPin);
LOG1(": Current Power=");
LOG1(power->value.BOOL?"true":"false");
LOG1(" New Power=");
LOG1(power->newValue.BOOL?"true":"false");
LOG1("\n");
digitalWrite(ledPin,power->newValue.BOOL);
return(StatusCode::OK); // return OK status code
} // update
};
//////////////////////////////////
struct DEV_DimmableLED : Service::LightBulb { // Dimmable LED
PwmPin *pwmPin; // reference to PWM Pin
int ledPin; // pin number defined for this LED <- NEW!!
int channel; // PWM channel used for this LED (should be unique for each LED)
SpanCharacteristic *power; // reference to the On Characteristic
SpanCharacteristic *level; // reference to the Brightness Characteristic
DEV_DimmableLED(int channel, int ledPin) : Service::LightBulb(){ // constructor() method
power=new Characteristic::On();
level=new Characteristic::Brightness(50); // Brightness Characteristic with an initial value of 50%
new SpanRange(5,100,1); // sets the range of the Brightness to be from a min of 5%, to a max of 100%, in steps of 1%
this->channel=channel; // save the channel number (from 0-15)
this->ledPin=ledPin; // save LED pin number
this->pwmPin=new PwmPin(channel, ledPin); // configure the PWM channel and attach the specified ledPin
Serial.print("Configuring Dimmable LED: Pin="); // initialization message
Serial.print(ledPin);
Serial.print(" Channel=");
Serial.print(channel);
Serial.print("\n");
} // end constructor
StatusCode update(){ // update() method
LOG1("Updating Dimmable LED on pin=");
LOG1(ledPin);
LOG1(": Current Power=");
LOG1(power->value.BOOL?"true":"false");
LOG1(" Current Brightness=");
LOG1(level->value.INT);
if(power->isUpdated){
LOG1(" New Power=");
LOG1(power->newValue.BOOL?"true":"false");
}
if(level->isUpdated){
LOG1(" New Brightness=");
LOG1(level->newValue.INT);
}
LOG1("\n");
pwmPin->set(channel,power->newValue.BOOL*level->newValue.INT);
return(StatusCode::OK); // return OK status code
} // update
};
//////////////////////////////////
struct DEV_RgbLED : Service::LightBulb { // RGB LED (Command Cathode)
PwmPin *redPin;
PwmPin *greenPin;
PwmPin *bluePin;
int redChannel;
int greenChannel;
int blueChannel;
SpanCharacteristic *power; // reference to the On Characteristic
SpanCharacteristic *H; // reference to the Hue Characteristic
SpanCharacteristic *S; // reference to the Saturation Characteristic
SpanCharacteristic *V; // reference to the Brightness Characteristic
DEV_RgbLED(int redChannel, int greenChannel, int blueChannel, int redPin, int greenPin, int bluePin) : Service::LightBulb(){ // constructor() method
power=new Characteristic::On();
H=new Characteristic::Hue(0); // instantiate the Hue Characteristic with an initial value of 0 out of 360
S=new Characteristic::Saturation(0); // instantiate the Saturation Characteristic with an initial value of 0%
V=new Characteristic::Brightness(100); // instantiate the Brightness Characteristic with an initial value of 100%
new SpanRange(5,100,1); // sets the range of the Brightness to be from a min of 5%, to a max of 100%, in steps of 1%
this->redChannel=redChannel; // save the channel number (from 0-15)
this->greenChannel=greenChannel; // save the channel number (from 0-15)
this->blueChannel=blueChannel; // save the channel number (from 0-15)
this->redPin=new PwmPin(redChannel, redPin); // configure the PWM channel and attach the specified pin
this->greenPin=new PwmPin(greenChannel, greenPin); // configure the PWM channel and attach the specified pin
this->bluePin=new PwmPin(blueChannel, bluePin); // configure the PWM channel and attach the specified pin
char cBuf[128];
sprintf(cBuf,"Configuring RGB LED: Pins=(%d,%d,%d) Channels=(%d,%d,%d)\n",redPin,greenPin,bluePin,redChannel,greenChannel,blueChannel);
Serial.print(cBuf);
} // end constructor
StatusCode update(){ // update() method
boolean p;
int v;
double h, s, r, g, b;
h=H->value.FLOAT; // get all current values
s=S->value.FLOAT;
v=V->value.INT;
p=power->value.BOOL;
char cBuf[128];
sprintf(cBuf,"Updating RGB LED on pins=(%d,%d,%d): ",redPin->getPin(),greenPin->getPin(),bluePin->getPin());
LOG1(cBuf);
if(power->isUpdated){
p=power->newValue.BOOL;
sprintf(cBuf,"Power=%s->%s, ",power->value.BOOL?"true":"false",p?"true":"false");
} else {
sprintf(cBuf,"Power=%s, ",p?"true":"false");
}
LOG1(cBuf);
if(H->isUpdated){
h=H->newValue.FLOAT;
sprintf(cBuf,"H=%d->%d, ",(int)H->value.FLOAT,(int)h);
} else {
sprintf(cBuf,"H=%d, ",(int)h);
}
LOG1(cBuf);
if(S->isUpdated){
s=S->newValue.FLOAT;
sprintf(cBuf,"S=%d->%d, ",(int)S->value.FLOAT,(int)s);
} else {
sprintf(cBuf,"S=%d, ",(int)s);
}
LOG1(cBuf);
if(V->isUpdated){
v=V->newValue.INT;
sprintf(cBuf,"V=%d->%d ",V->value.INT,v);
} else {
sprintf(cBuf,"V=%d ",v);
}
LOG1(cBuf);
PwmPin::HSVtoRGB(h,s/100.0,v/100.0,&r,&g,&b);
int R, G, B;
R=p*r*100;
G=p*g*100;
B=p*b*100;
sprintf(cBuf,"RGB=(%d,%d,%d)\n",R,G,B);
LOG1(cBuf);
redPin->set(redChannel,R);
greenPin->set(greenChannel,G);
bluePin->set(blueChannel,B);
return(StatusCode::OK); // return OK status code
} // update
};
//////////////////////////////////

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examples/Advanced/11-RGB_LED/DEV_Identify.h Normal file
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//////////////////////////////////
// DEVICE-SPECIFIC SERVICES //
//////////////////////////////////
struct DEV_Identify : Service::AccessoryInformation {
int nBlinks; // number of times to blink built-in LED in identify routine
SpanCharacteristic *identify; // reference to the Identify Characteristic
DEV_Identify(char *name, char *manu, char *sn, char *model, char *version, int nBlinks) : Service::AccessoryInformation(){
new Characteristic::Name(name); // create all the required Characteristics with values set based on above arguments
new Characteristic::Manufacturer(manu);
new Characteristic::SerialNumber(sn);
new Characteristic::Model(model);
new Characteristic::FirmwareRevision(version);
identify=new Characteristic::Identify(); // store a reference to the Identify Characteristic for use below
this->nBlinks=nBlinks; // store the number of times to blink the built-in LED
pinMode(LED_BUILTIN,OUTPUT); // make sure built-in LED is set for output
}
StatusCode update(){
for(int i=0;i<nBlinks;i++){
digitalWrite(LED_BUILTIN,LOW);
delay(250);
digitalWrite(LED_BUILTIN,HIGH);
delay(250);
}
return(StatusCode::OK);
} // update
};

97
examples/Advanced/11-RGB_LED/DEV_LED.h Normal file
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////////////////////////////////////
// DEVICE-SPECIFIC LED SERVICES //
////////////////////////////////////
#include "extras/PwmPin.h"
//////////////////////////////////
struct DEV_LED : Service::LightBulb { // ON/OFF LED
int ledPin; // pin number defined for this LED
SpanCharacteristic *power; // reference to the On Characteristic
DEV_LED(int ledPin) : Service::LightBulb(){ // constructor() method
power=new Characteristic::On();
this->ledPin=ledPin;
pinMode(ledPin,OUTPUT);
} // end constructor
StatusCode update(){ // update() method
digitalWrite(ledPin,power->newValue.BOOL);
return(StatusCode::OK); // return OK status code
} // update
};
//////////////////////////////////
struct DEV_DimmableLED : Service::LightBulb { // Dimmable LED
PwmPin *pwmPin; // reference to PWM Pin
int channel; // PWM channel used for this LED (should be unique for each LED)
SpanCharacteristic *power; // reference to the On Characteristic
SpanCharacteristic *level; // reference to the Brightness Characteristic
DEV_DimmableLED(int channel, int ledPin) : Service::LightBulb(){ // constructor() method
power=new Characteristic::On();
level=new Characteristic::Brightness(50); // instantiate the Brightness Characteristic with an initial value of 50%
new SpanRange(5,100,1); // sets the range of the Brightness to be from a min of 5%, to a max of 100%, in steps of 1%
this->channel=channel; // save the channel number (from 0-15)
this->pwmPin=new PwmPin(channel, ledPin); // configures the PWM channel and attach the specified ledPin. pinMode() does NOT need to be called.
} // end constructor
StatusCode update(){ // update() method
pwmPin->set(channel,power->newValue.BOOL*level->newValue.INT);
return(StatusCode::OK); // return OK status code
} // update
};
//////////////////////////////////
struct DEV_RgbLED : Service::LightBulb { // RGB LED (Command Cathode)
PwmPin *redPin;
PwmPin *greenPin;
PwmPin *bluePin;
int redChannel;
int greenChannel;
int blueChannel;
SpanCharacteristic *power; // reference to the On Characteristic
SpanCharacteristic *H; // reference to the Hue Characteristic
SpanCharacteristic *S; // reference to the Saturation Characteristic
SpanCharacteristic *B; // reference to the Brightness Characteristic
DEV_RgbLED(int redChannel, int greenChannel, int blueChannel, int redPin, int greenPin, int bluePin) : Service::LightBulb(){ // constructor() method
power=new Characteristic::On();
H=new Characteristic::Brightness(100); // instantiate the Brightness Characteristic with an initial value of 100%
new SpanRange(5,100,1); // sets the range of the Brightness to be from a min of 5%, to a max of 100%, in steps of 1%
this->channel=channel; // save the channel number (from 0-15)
this->pwmPin=new PwmPin(channel, ledPin); // configures the PWM channel and attach the specified ledPin. pinMode() does NOT need to be called.
} // end constructor
StatusCode update(){ // update() method
pwmPin->set(channel,power->newValue.BOOL*level->newValue.INT);
return(StatusCode::OK); // return OK status code
} // update
};
//////////////////////////////////

2
src/Settings.h
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@ -18,7 +18,7 @@ const int MAX_CONNECTIONS=8;
// Verbosity -- controls message output // // Verbosity -- controls message output //
// 0=Minimal, 1=Informative, 2=All // // 0=Minimal, 1=Informative, 2=All //
#define VERBOSITY 2 #define VERBOSITY 1
//-------------------------------------------------// //-------------------------------------------------//

57
src/extras/PwmPin.cpp
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@ -30,3 +30,60 @@ void PwmPin::set(uint8_t channel, uint8_t level){
ledc_channel_config(&ledChannel); ledc_channel_config(&ledChannel);
} }
///////////////////
void PwmPin::HSVtoRGB(double h, double s, double v, double *r, double *g, double *b ){
// The algorithm below was provided on the web at https://www.cs.rit.edu/~ncs/color/t_convert.html
// h = [0,360]
// s = [0,1]
// v = [0,1]
int i;
double f, p, q, t;
if( s == 0 ){
*r = *g = *b = v;
return;
}
h /= 60;
i = floor( h ) ;
f = h - i;
p = v * ( 1 - s );
q = v * ( 1 - s * f );
t = v * ( 1 - s * ( 1 - f ) );
switch( i % 6 ) {
case 0:
*r = v;
*g = t;
*b = p;
break;
case 1:
*r = q;
*g = v;
*b = p;
break;
case 2:
*r = p;
*g = v;
*b = t;
break;
case 3:
*r = p;
*g = q;
*b = v;
break;
case 4:
*r = t;
*g = p;
*b = v;
break;
case 5:
*r = v;
*g = p;
*b = q;
break;
}
}

4
src/extras/PwmPin.h
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@ -18,4 +18,8 @@ class PwmPin {
public: public:
PwmPin(uint8_t channel, uint8_t pin); // assigns pin to be output of one of 16 PWM channels (0-15) PwmPin(uint8_t channel, uint8_t pin); // assigns pin to be output of one of 16 PWM channels (0-15)
void set(uint8_t channel, uint8_t level); // sets the PWM duty of channel to level (0-100) void set(uint8_t channel, uint8_t level); // sets the PWM duty of channel to level (0-100)
int getPin(){return pin;} // returns the pin number
static void HSVtoRGB(double h, double s, double v, double *r, double *g, double *b );
}; };