Serial GPIOs rev_01

/********* Pleasedontcode.com **********

    Pleasedontcode thanks you for automatic code generation! Enjoy your code!

    - Terms and Conditions:
    You have a non-exclusive, revocable, worldwide, royalty-free license
    for personal and commercial use. Attribution is optional; modifications
    are allowed, but you're responsible for code maintenance. We're not
    liable for any loss or damage. For full terms,
    please visit pleasedontcode.com/termsandconditions.

    - Project: Serial GPIOs
    - Source Code NOT compiled for: ESP32 DevKit V1
    - Source Code created on: 2025-09-11 09:03:12

********* Pleasedontcode.com **********/

/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* I have iPhone in home app. I have eight */
    /* accessories for my home automation ac, TV, music, */
    /* projector, charger, bulb lamp good night and fan */
    /* in GPIo pain is 5’18’19’25’26’27’23’21   End when */
    /* power cut  accessories will be on is on not all */
    /* oll off */
/****** END SYSTEM REQUIREMENTS *****/


/* START CODE */

/****** DEFINITION OF LIBRARIES *****/

/* No external libraries required for this simple ESP32 GPIO controller. */

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);

static const int NUM_DEVICES = 8;
static const int DEV_PINS[NUM_DEVICES] = {5, 18, 19, 25, 26, 27, 23, 21};
static const char* DEV_NAMES[NUM_DEVICES] = {"AC","TV","Music","Projector","Charger","BulbLamp","GoodNight","Fan"};

static bool devState[NUM_DEVICES] = {false, false, false, false, false, false, false, false};

static const int POWER_FAULT_PIN = 4; // Active HIGH when power OK (pullup used)
static bool powerOk = true;
static bool lastPowerOk = true;

void applyDeviceState(int idx, bool state) {
  if (idx < 0 || idx >= NUM_DEVICES) return;
  digitalWrite(DEV_PINS[idx], state ? HIGH : LOW);
  devState[idx] = state;
}

void printStatus(void) {
  Serial.print("Device States: ");
  for (int i = 0; i < NUM_DEVICES; i++) {
    Serial.print(DEV_NAMES[i]);
    Serial.print(":");
    Serial.print(devState[i] ? "ON" : "OFF");
    if (i < NUM_DEVICES - 1) Serial.print(" ");
  }
  Serial.println();
}

void setup(void)
{
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("ESP32 Eight-Device Controller: Initializing...");
  for (int i = 0; i < NUM_DEVICES; i++) {
    pinMode(DEV_PINS[i], OUTPUT);
    digitalWrite(DEV_PINS[i], LOW); // Start OFF
  }
  pinMode(POWER_FAULT_PIN, INPUT_PULLUP);
  powerOk = digitalRead(POWER_FAULT_PIN) == HIGH;
  lastPowerOk = powerOk;
  Serial.print("Power status: ");
  Serial.println(powerOk ? "OK" : "FAULT");
  printStatus();
  Serial.println("Commands:");
  Serial.println("ON <idx>      - Turn ON device <idx> (0-7)");
  Serial.println("OFF <idx>     - Turn OFF device <idx> (0-7)");
  Serial.println("TOGGLE <idx>  - Toggle device <idx> (0-7)");
  Serial.println("STATE         - Print current device states");
  Serial.println("Example: ON 2");
}

void loop(void)
{
  // Monitor power status
  lastPowerOk = powerOk;
  powerOk = digitalRead(POWER_FAULT_PIN) == HIGH;
  if (!powerOk && lastPowerOk) {
    // Power cut detected
    Serial.println("Power cut detected. Preserving current device states during outage.");
  }

  // Simple serial command interface
  if (Serial.available() > 0) {
    String line = Serial.readStringUntil('\n');
    line.trim();
    if (line.length() == 0) return;

    if (line.startsWith("ON")) {
      int idx = line.substring(2).trim().toInt();
      if (idx >= 0 && idx < NUM_DEVICES) {
        applyDeviceState(idx, true);
        Serial.println(String("Device ") + DEV_NAMES[idx] + " ON");
      } else {
        Serial.println("Invalid index. Use 0-7.");
      }
    } else if (line.startsWith("OFF")) {
      int idx = line.substring(3).trim().toInt();
      if (idx >= 0 && idx < NUM_DEVICES) {
        applyDeviceState(idx, false);
        Serial.println(String("Device ") + DEV_NAMES[idx] + " OFF");
      } else {
        Serial.println("Invalid index. Use 0-7.");
      }
    } else if (line.startsWith("TOGGLE")) {
      int idx = line.substring(6).trim().toInt();
      if (idx >= 0 && idx < NUM_DEVICES) {
        bool newState = !devState[idx];
        applyDeviceState(idx, newState);
        Serial.println(String("Device ") + DEV_NAMES[idx] + (newState ? " ON" : " OFF"));
      } else {
        Serial.println("Invalid index. Use 0-7.");
      }
    } else if (line.startsWith("STATE")) {
      printStatus();
    } else if (line.startsWith("HELP")) {
      Serial.println("Commands:");
      Serial.println("ON <idx>      - Turn ON device <idx> (0-7)");
      Serial.println("OFF <idx>     - Turn OFF device <idx> (0-7)");
      Serial.println("TOGGLE <idx>  - Toggle device <idx> (0-7)");
      Serial.println("STATE         - Print current device states");
    } else {
      Serial.println("Unknown command. Type HELP for commands.");
    }
  }

  // Optional: small delay to avoid busy loop
  delay(10);
}

/* END CODE */