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Merge pull request Mixiaoxiao#62 from JayFiDev/master
WS2812 / Neopixel Example
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‎examples/Example05_WS2812_Neopixel/Example05_WS2812_Neopixel.ino

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/*
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* Example05_WS2812_Neopixel.ino
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*
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* Created on: 2020-10-01
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* Author: Juergen Fink
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* Thanks to all the other helpful people commenting here.
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*
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* This example allows to change brightness and color of a connected neopixel strip/matrix
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*
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* You should:
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* 1. read and use the Example01_TemperatureSensor with detailed comments
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* to know the basic concept and usage of this library before other examples。
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* 2. erase the full flash or call homekit_storage_reset() in setup()
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* to remove the previous HomeKit pairing storage and
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* enable the pairing with the new accessory of this new HomeKit example.
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*/
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#include <Arduino.h>
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#include <arduino_homekit_server.h>
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#include <Adafruit_NeoPixel.h>
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#include "wifi_info.h"
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#define LOG_D(fmt, ...) printf_P(PSTR(fmt "\n") , ##__VA_ARGS__);
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#define NEOPIN D4
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#define NUMPIXELS 64
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Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, NEOPIN, NEO_GRB + NEO_KHZ800);
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bool received_sat = false;
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bool received_hue = false;
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bool is_on = false;
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float current_brightness = 100.0;
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float current_sat = 0.0;
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float current_hue = 0.0;
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int rgb_colors[3];
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void setup() {
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Serial.begin(115200);
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wifi_connect(); // in wifi_info.h
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pixels.begin();
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for(int i = 0; i < NUMPIXELS; i++)
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{
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pixels.setPixelColor(i, 0, 0, 0);
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}
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pixels.show();
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delay(1000);
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rgb_colors[0] = 255;
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rgb_colors[1] = 255;
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rgb_colors[2] = 255;
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my_homekit_setup();
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}
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void loop() {
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my_homekit_loop();
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delay(10);
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}
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//==============================
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// HomeKit setup and loop
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//==============================
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// access your HomeKit characteristics defined in my_accessory.c
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extern "C" homekit_server_config_t accessory_config;
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extern "C" homekit_characteristic_t cha_on;
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extern "C" homekit_characteristic_t cha_bright;
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extern "C" homekit_characteristic_t cha_sat;
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extern "C" homekit_characteristic_t cha_hue;
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static uint32_t next_heap_millis = 0;
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void my_homekit_setup() {
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cha_on.setter = set_on;
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cha_bright.setter = set_bright;
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cha_sat.setter = set_sat;
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cha_hue.setter = set_hue;
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arduino_homekit_setup(&accessory_config);
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}
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void my_homekit_loop() {
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arduino_homekit_loop();
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const uint32_t t = millis();
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if (t > next_heap_millis) {
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// show heap info every 5 seconds
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next_heap_millis = t + 5 * 1000;
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LOG_D("Free heap: %d, HomeKit clients: %d",
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ESP.getFreeHeap(), arduino_homekit_connected_clients_count());
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}
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}
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void set_on(const homekit_value_t v) {
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bool on = v.bool_value;
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cha_on.value.bool_value = on; //sync the value
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if(on) {
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is_on = true;
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Serial.println("On");
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} else {
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is_on = false;
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Serial.println("Off");
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}
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updateColor();
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}
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void set_hue(const homekit_value_t v) {
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Serial.println("set_hue");
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float hue = v.float_value;
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cha_hue.value.float_value = hue; //sync the value
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current_hue = hue;
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received_hue = true;
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updateColor();
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}
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void set_sat(const homekit_value_t v) {
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Serial.println("set_sat");
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float sat = v.float_value;
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cha_sat.value.float_value = sat; //sync the value
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current_sat = sat;
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received_sat = true;
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updateColor();
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}
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void set_bright(const homekit_value_t v) {
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Serial.println("set_bright");
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int bright = v.int_value;
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cha_bright.value.int_value = bright; //sync the value
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current_brightness = bright;
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updateColor();
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}
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void updateColor()
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{
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if(is_on)
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{
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if(received_hue && received_sat)
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{
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HSV2RGB(current_hue, current_sat, current_brightness);
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received_hue = false;
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received_sat = false;
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}
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int b = map(current_brightness,0, 100,75, 255);
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Serial.println(b);
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pixels.setBrightness(b);
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for(int i = 0; i < NUMPIXELS; i++)
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{
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pixels.setPixelColor(i, pixels.Color(rgb_colors[0],rgb_colors[1],rgb_colors[2]));
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}
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pixels.show();
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}
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else if(!is_on) //lamp - switch to off
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{
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Serial.println("is_on == false");
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pixels.setBrightness(0);
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for(int i = 0; i < NUMPIXELS; i++)
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{
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pixels.setPixelColor(i, pixels.Color(0,0,0));
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}
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pixels.show();
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}
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}
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void HSV2RGB(float h,float s,float v) {
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int i;
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float m, n, f;
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s/=100;
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v/=100;
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if(s==0){
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rgb_colors[0]=rgb_colors[1]=rgb_colors[2]=round(v*255);
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return;
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}
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h/=60;
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i=floor(h);
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f=h-i;
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if(!(i&1)){
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f=1-f;
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}
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m=v*(1-s);
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n=v*(1-s*f);
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switch (i) {
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case 0: case 6:
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rgb_colors[0]=round(v*255);
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rgb_colors[1]=round(n*255);
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rgb_colors[2]=round(m*255);
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break;
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case 1:
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rgb_colors[0]=round(n*255);
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rgb_colors[1]=round(v*255);
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rgb_colors[2]=round(m*255);
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break;
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case 2:
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rgb_colors[0]=round(m*255);
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rgb_colors[1]=round(v*255);
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rgb_colors[2]=round(n*255);
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break;
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case 3:
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rgb_colors[0]=round(m*255);
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rgb_colors[1]=round(n*255);
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rgb_colors[2]=round(v*255);
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break;
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case 4:
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rgb_colors[0]=round(n*255);
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rgb_colors[1]=round(m*255);
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rgb_colors[2]=round(v*255);
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break;
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case 5:
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rgb_colors[0]=round(v*255);
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rgb_colors[1]=round(m*255);
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rgb_colors[2]=round(n*255);
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break;
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}
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}

‎examples/Example05_WS2812_Neopixel/my_accessory.c

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/*
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* my_accessory.c
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* Define the accessory in C language using the Macro in characteristics.h
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*
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* Created on: 2020-05-15
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* Author: Mixiaoxiao (Wang Bin)
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*/
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#include <homekit/homekit.h>
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#include <homekit/characteristics.h>
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void my_accessory_identify(homekit_value_t _value) {
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printf("accessory identify\n");
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}
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homekit_characteristic_t cha_on = HOMEKIT_CHARACTERISTIC_(ON, false);
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homekit_characteristic_t cha_name = HOMEKIT_CHARACTERISTIC_(NAME, "ESP8266 Lamp");
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homekit_characteristic_t cha_bright = HOMEKIT_CHARACTERISTIC_(BRIGHTNESS, 50);
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homekit_characteristic_t cha_sat = HOMEKIT_CHARACTERISTIC_(SATURATION, (float) 0);
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homekit_characteristic_t cha_hue = HOMEKIT_CHARACTERISTIC_(HUE, (float) 180);
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homekit_accessory_t *accessories[] = {
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HOMEKIT_ACCESSORY(.id=1, .category=homekit_accessory_category_lightbulb, .services=(homekit_service_t*[]) {
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HOMEKIT_SERVICE(ACCESSORY_INFORMATION, .characteristics=(homekit_characteristic_t*[]) {
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HOMEKIT_CHARACTERISTIC(NAME, "ESP8266 Lamp"),
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HOMEKIT_CHARACTERISTIC(MANUFACTURER, "Arduino HomeKit"),
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HOMEKIT_CHARACTERISTIC(SERIAL_NUMBER, "0123456"),
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HOMEKIT_CHARACTERISTIC(MODEL, "ESP8266/ESP32"),
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HOMEKIT_CHARACTERISTIC(FIRMWARE_REVISION, "1.0"),
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HOMEKIT_CHARACTERISTIC(IDENTIFY, my_accessory_identify),
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NULL
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}),
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HOMEKIT_SERVICE(LIGHTBULB, .primary=true, .characteristics=(homekit_characteristic_t*[]) {
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&cha_on,
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&cha_name,
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&cha_bright,
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&cha_sat,
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&cha_hue,
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NULL
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}),
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NULL
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}),
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NULL
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};
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homekit_server_config_t accessory_config = {
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.accessories = accessories,
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.password = "111-11-111"
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};

‎examples/Example05_WS2812_Neopixel/wifi_info.h

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/*
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* wifi_info.h
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*
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* Created on: 2020-05-15
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* Author: Mixiaoxiao (Wang Bin)
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*/
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#ifndef WIFI_INFO_H_
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#define WIFI_INFO_H_
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#if defined(ESP8266)
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#include <ESP8266WiFi.h>
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#elif defined(ESP32)
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#include <WiFi.h>
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#endif
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const char *ssid = "your-ssid";
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const char *password = "your-password";
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void wifi_connect() {
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WiFi.persistent(false);
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WiFi.mode(WIFI_STA);
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WiFi.setAutoReconnect(true);
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WiFi.begin(ssid, password);
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Serial.println("WiFi connecting...");
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while (!WiFi.isConnected()) {
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delay(100);
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Serial.print(".");
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}
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Serial.print("\n");
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Serial.printf("WiFi connected, IP: %s\n", WiFi.localIP().toString().c_str());
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}
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#endif /* WIFI_INFO_H_ */

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