from machine import Pin, ADC, SoftI2C, PWM
from time import sleep, time
from lcd_api import LcdApi
from i2c_api import I2cLcd

# Configuration
LDR_PIN = 34           # LDR Analog pin (GPIO34)
LED_PIN = 5            # LED pin (GPIO5)
SERVO_PIN = 18         # Servo control pin (GPIO18)
I2C_SDA = 21           # I2C SDA pin (GPIO21)
I2C_SCL = 22           # I2C SCL pin (GPIO22)
I2C_ADDR = 0x27        # LCD I2C address
LCD_ROWS = 2
LCD_COLS = 16

# Initialize I2C and LCD
i2c = SoftI2C(scl=Pin(I2C_SCL), sda=Pin(I2C_SDA), freq=10000)
lcd = I2cLcd(i2c, I2C_ADDR, LCD_ROWS, LCD_COLS)

# Initialize LDR (Light Dependent Resistor)
ldr = ADC(Pin(LDR_PIN))
ldr.atten(ADC.ATTN_11DB)  # Full voltage range: 0-3.3V

# Initialize LED
led = Pin(LED_PIN, Pin.OUT)

# Initialize Servo
servo = PWM(Pin(SERVO_PIN), freq=100)

def set_servo_angle(angle):
    # Convert angle (0-180) to duty cycle (40-118) for the servo motor
    duty = int(20 + (angle / 180) * 78)
    servo.duty(duty)

# Start a software-based clock
start_time = time()

# Main loop
while True:
    # Read light level from LDR
    light_level = ldr.read()
    
    # Map light level (0-4095) to servo angle (0-180)
    servo_angle = int((light_level / 4095) * 180)
    set_servo_angle(servo_angle)

    # Control the LED: Turn on only if servo angle is 0 degrees
    led.value(1 if servo_angle == 0 else 0)

    # Calculate elapsed time for a simple clock display (HH:MM:SS)
    elapsed_time = int(time() - start_time)
    hours = (elapsed_time // 3600) % 24
    minutes = (elapsed_time % 3600) // 60
    seconds = elapsed_time % 60

    # Update LCD Display
    lcd.clear()
    lcd.putstr(f"Angle: {servo_angle} deg")
    lcd.move_to(1, 0)  # Move to second line
    lcd.putstr(f"Time: {hours:02}:{minutes:02}:{seconds:02}")

    # Print time to console (optional)
    print(f"Current Time: {hours:02}:{minutes:02}:{seconds:02}")

    # Delay before the next reading
    sleep(0.5)