from machine import Pin, I2C
from lcd_api import LcdApi
from pico_i2c_lcd import I2cLcd
import time

# I2C and LCD configuration
I2C_ADDR = 0x27
I2C_NUM_ROWS = 2
I2C_NUM_COLS = 16

# Initialize I2C (GP0 = SDA, GP1 = SCL)
i2c = I2C(0, sda=Pin(0), scl=Pin(1), freq=400000)

# Initialize LCD
lcd = I2cLcd(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)

# Initialize button on GP15 with pull-up
button = Pin(15, Pin.IN, Pin.PULL_UP)

# Counter for button presses
press_count = 0
last_button_state = 1

def update_display(line1, line2=""):
    """Update the LCD display with 2 lines of text"""
    lcd.clear()
    lcd.putstr(line1)
    if line2:
        lcd.move_to(0, 1)
        lcd.putstr(line2)

# Display welcome message
update_display("Raspberry Pico", "Press button!")

print("Program started!")
print("Press the button to increment counter")

# Main loop
while True:
    current_button_state = button.value()
    
    # Detect button press (transition from HIGH to LOW)
    if last_button_state == 1 and current_button_state == 0:
        press_count += 1
        print(f"Button pressed! Count: {press_count}")
        update_display("Button Pressed!", f"Count: {press_count}")
        time.sleep(0.2)  # Debounce delay
    
    last_button_state = current_button_state
    time.sleep(0.01)  # Small delay to reduce CPU usage