102 lines
5.7 KiB
C++
102 lines
5.7 KiB
C++
|
|
////////////////////////////////////////////////////////////
|
|
// //
|
|
// HomeSpan: A HomeKit implementation for the ESP32 //
|
|
// ------------------------------------------------ //
|
|
// //
|
|
// Example 5: Two working on/off LEDs based on the //
|
|
// LightBulb Service //
|
|
// //
|
|
////////////////////////////////////////////////////////////
|
|
|
|
|
|
#include "HomeSpan.h"
|
|
#include "DEV_LED.h" // NEW! Include this new file, DEV_LED.h, which will be fully explained below
|
|
|
|
void setup() {
|
|
|
|
// First light! Control an LED from HomeKit!
|
|
|
|
// Example 5 expands on Example 2 by adding in the code needed to actually control LEDs connected to the ESP32 from HomeKit.
|
|
// In Example 2 we built out all the functionality to create a "Tile" Acessories inside HomeKit that displayed an on/off light, but
|
|
// these control did not actually operate anything on the ESP32. To operate actual devices HomeSpan needs to be programmed to
|
|
// respond to "update" requests from HomeKit by performing some form of operation.
|
|
|
|
// Though HomeKit sends "update' requests to individual Characteristics,this is not intuitive and leads to complex coding requirements
|
|
// when a Service has more than one Characteristic, such as "On" and "Brightness." To make this MUCH easier for the user, HomeSpan
|
|
// uses a framework in which Services are updated instead of individual Characteristics. It does so by calling the update() method of
|
|
// each Service with flags indicating all the Characteristics in that Service that HomeKit requested to update. The user simply
|
|
// implements code to perform the actual operation, and returns a status flag (okay or not okay). HomeSpan takes care of all the underlying
|
|
// nuts and bolts.
|
|
|
|
// Every Service defined in HomeKit, such as Service:LightBulb and Service:Fan (and even Service::AccessoryInformation) implements an update()
|
|
// method that, as a default, does nothing but return a status of okay. To actually operate real devices you need to over-ride this default update()
|
|
// method with your own code. The easiest way to do this is by creating a DERIVED class based on one of the built-in HomeSpan Services.
|
|
// Within this derived class you can perform initial set-up routines (if needed), over-ride the update() method with your own code, and even create
|
|
// any other methods or class-specific variables you need to fully operate complex devices. Most importantly, the derived class can take arguments
|
|
// so that you can make them more generic, re-use them multiple times (as will be seen below), and convert them to standalone modules (see Example 7).
|
|
|
|
// We begin by repeating nearly the same code from Example 2, but with a few key changes. For ease of reading, all prior comments have been removed
|
|
// from lines that simply repeat Example 2, and new comments have been added to explictly show the new code.
|
|
|
|
|
|
Serial.begin(115200);
|
|
|
|
homeSpan.begin(Category::Lighting,"HomeSpan LEDs");
|
|
|
|
new SpanAccessory();
|
|
|
|
new Service::AccessoryInformation();
|
|
new Characteristic::Name("LED #1");
|
|
new Characteristic::Manufacturer("HomeSpan");
|
|
new Characteristic::SerialNumber("123-ABC");
|
|
new Characteristic::Model("20mA LED");
|
|
new Characteristic::FirmwareRevision("0.9");
|
|
new Characteristic::Identify();
|
|
|
|
new Service::HAPProtocolInformation();
|
|
new Characteristic::Version("1.1.0");
|
|
|
|
// In Example 2 we instantiated a LightBulb Service and its "On" Characteristic here. We are going to replace these two lines (by commenting them out)...
|
|
|
|
// new Service::LightBulb();
|
|
// new Characteristic::On();
|
|
|
|
// ...with a single new line instantiating a new class we will call DEV_LED():
|
|
|
|
new DEV_LED(16); // this instantiates a new LED Service. Where is this defined? What happpened to Characteristic::On? Keep reading...
|
|
|
|
// The full definition and code for DEV_LED is implemented in a separate file called "DEV_LED.h" that is specified using the #include at the top of this program.
|
|
// The prefix DEV_ is not required but it's a helpful convention to name all your device-specific Services. Note that DEV_LED wil include all the required
|
|
// Characterictics of the Service, so you DO NOT have to separately instantiate Characteristic::On --- everything HomeSpan needs for DEV_LED will be implemented
|
|
// in DEV_LED itself (though it's not all that much). Finally, note that we created DEV_LED to take a single integer argument. If you guessed this is
|
|
// the number of the Pin to which you have attached an LED, you'd be right. See DEV_LED.h for a complete explanation of how it works.
|
|
|
|
new SpanAccessory();
|
|
|
|
new Service::AccessoryInformation();
|
|
new Characteristic::Name("LED #2");
|
|
new Characteristic::Manufacturer("HomeSpan");
|
|
new Characteristic::SerialNumber("123-ABC");
|
|
new Characteristic::Model("20mA LED");
|
|
new Characteristic::FirmwareRevision("0.9");
|
|
new Characteristic::Identify();
|
|
|
|
new Service::HAPProtocolInformation();
|
|
new Characteristic::Version("1.1.0");
|
|
|
|
// new Service::LightBulb(); // Same as above, this line is deleted...
|
|
// new Characteristic::On(); // This line is also deleted...
|
|
|
|
new DEV_LED(17); // ...and replaced with a single line that instantiates a second DEV_LED Service on Pin 17
|
|
|
|
} // end of setup()
|
|
|
|
//////////////////////////////////////
|
|
|
|
void loop(){
|
|
|
|
homeSpan.poll();
|
|
|
|
} // end of loop()
|