#include "Zigbee.h"
/* Pin configuration */
#define PIN_PWM 14
#define PIN_TOUCH 20
#define PIN_RESET BOOT_PIN
/* PWM configuration */
#define PWM_FREQ 2000
#define PWM_RESOLUTION 8
#define PWM_CHANNEL 0
/* Zigbee configuration */
#define ZIGBEE_ENDPOINT 10
#define MANUFACTURER "Espressif"
#define MODEL "ZBLightTouch"
/* Button configuration */
#define RESET_DELAY 3000 // Factory reset delay (3 seconds)
#define TOUCH_DEBOUNCE 200 // Touch sensor debounce time (ms)
/* Zigbee light instance */
ZigbeeDimmableLight zbDimmableLight(ZIGBEE_ENDPOINT);
// LED functions
void setLight(bool state, uint8_t level) {
 uint8_t duty = state ? level : 0;
 ledcWriteChannel(PWM_CHANNEL, duty);
 Serial.printf("setLight -> State: %s | Brightness: %u\n", state ? "ON" : "OFF", duty);
}
// Create a task on identify call to handle the identify function
void identify(uint16_t time) {
 static bool blink = false;
 log_d("Identify called for %d seconds", time);
 
 if (time == 0) {
 zbDimmableLight.restoreLight();
 return;
 }
 for (int i = 0; i < time * 2; ++i) {
 ledcWriteChannel(PWM_CHANNEL, blink ? 254 : 0);
 blink = !blink;
 delay(500);
 }
 zbDimmableLight.restoreLight();
}
void setup() {
 // Initialize serial communication
 Serial.begin(115200);
 Serial.println("\nStarting Zigbee light...");
 // Configure pins
 pinMode(PIN_TOUCH, INPUT);
 pinMode(PIN_RESET, INPUT_PULLUP);
 // Configure PWM
 if (!ledcAttachChannel(PIN_PWM, PWM_FREQ, PWM_RESOLUTION, PWM_CHANNEL)) {
 Serial.println("Error: PWM configuration failed");
 while (true);
 }
 ledcWriteChannel(PWM_CHANNEL, 0); // Off at startup
 // Configure Zigbee
 zbDimmableLight.onLightChange(setLight);
 zbDimmableLight.onIdentify(identify);
 zbDimmableLight.setManufacturerAndModel(MANUFACTURER, MODEL);
 zbDimmableLight.setPowerSource(ZB_POWER_SOURCE_MAINS);
 Zigbee.addEndpoint(&zbDimmableLight);
 // Start Zigbee network
 if (!Zigbee.begin()) {
 Serial.println("Error: Zigbee startup failed. Restarting...");
 delay(1000);
 ESP.restart();
 }
 // Wait for Zigbee network connection
 Serial.print("Connecting to Zigbee network");
 while (!Zigbee.connected()) {
 Serial.print(".");
 delay(100);
 }
 Serial.println("\nZigbee connected!");
}
void loop() {
 static bool lastTouchState = false;
 // Handle touch sensor
 bool touchState = digitalRead(PIN_TOUCH);
 if (touchState && !lastTouchState) {
 bool currentState = zbDimmableLight.getLightState();
 zbDimmableLight.setLight(!currentState, zbDimmableLight.getLightLevel());
 Serial.printf("Touch toggle -> %s\n", !currentState ? "ON" : "OFF");
 delay(TOUCH_DEBOUNCE);
 }
 lastTouchState = touchState;
 // Handle factory reset
 if (digitalRead(PIN_RESET) == LOW) {
 delay(100);
 int start = millis();
 while (digitalRead(PIN_RESET) == LOW) {
 delay(50);
 if ((millis() - start) > RESET_DELAY) {
 Serial.println("Zigbee factory reset...");
 delay(1000);
 Zigbee.factoryReset();
 }
 }
 }
 delay(50);
}