#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>


// ---------- Pin mappings ----------
const int PIN_BUZZER     = 6;   // Buzzer (D6)
const int PIN_SOIL       = A0;  // Soil sensor analog pin

const int PIN_ORANGE_LED = 9;   // LED 1
const int PIN_YELLOW_LED = 10;  // LED 2
const int PIN_GREEN_LED  = 11;  // LED 3


// ---------- OLED config ----------
#define SCREEN_WIDTH  128
#define SCREEN_HEIGHT 64
#define OLED_RESET    -1  // Not used for I2C

Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

// Calibration range (scaled from ESP32 2165–3135 → Nano 0–1023)
const int RAW_MIN = 541;  // approx 2165 / 4
const int RAW_MAX = 784;  // approx 3135 / 4


void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}