#----------------- LCD 2--------------------------#
####### TEST 2 ######

from machine import Pin, I2C
import time
from lcd_api import LcdApi  
from i2c_lcd import I2cLcd  # Using the newer i2c-lcd.py library

# ========== HARDWARE CONFIGURATION ==========
# I2C Configuration (Real ESP32 pins)
I2C_SDA = Pin(21)
I2C_SCL = Pin(22)
LCD_ADDR = 0x27  # Try 0x3F if display doesn't respond
LCD_ROWS = 4     # 4 rows
LCD_COLS = 20    # 20 columns


# Button Configuration
BTN1 = Pin(14, Pin.IN, Pin.PULL_UP)
BTN2 = Pin(15, Pin.IN, Pin.PULL_UP)
BTN3 = Pin(16, Pin.IN, Pin.PULL_UP)

# ========== INITIALIZATION ==========
# Initialize I2C
i2c = I2C(0, sda=I2C_SDA, scl=I2C_SCL, freq=400000)

# Scan I2C bus to verify LCD is connected
print("Scanning I2C bus...")
devices = i2c.scan()
print(f"Found devices: {[hex(x) for x in devices]}")

# Initialize LCD with proper 4-line mode
try:
    lcd = I2cLcd(i2c, LCD_ADDR, LCD_ROWS, LCD_COLS)
    print("LCD initialized successfully!")
except Exception as e:
    print(f"LCD init failed: {e}")
    raise

# ========== LCD FUNCTIONS ==========
def display_lcd(lines, clear=True):
    #
    #Display text on 20x4 LCD
    #Args:
    #    lines: List of up to 4 strings
    #    clear: Whether to clear display first
    #
    if clear:
        lcd.clear()
    
    for row in range(min(4, len(lines))):  # Ensure max 4 lines
        lcd.move_to(0, row)
        lcd.putstr(lines[row][:20])  # Trim to 20 chars
        
    # Debug output
    print("Displaying:")
    for i, line in enumerate(lines):
        print(f"Line {i+1}: {line}")

# ========== BUTTON FUNCTIONS ==========
def debounce(button):
   # Simple button debounce
    time.sleep_ms(20)
    return button.value() == 0

# ========== MAIN PROGRAM ==========
# Startup message showing all 4 lines work
display_lcd([
    "20x4 LCD Test", 
    "All lines working",
    "Line 3 confirmed",
    "Line 4 operational"
])

while True:
    # Check Button 1
    if not BTN1.value() and debounce(BTN1):
        display_lcd([
            "Button 1 pressed",
            "Starting process",
            "Status: Running",
            "Task 1 active"
        ])
        while not BTN1.value():  # Wait for release
            time.sleep_ms(10)
    
    # Check Button 2
    elif not BTN2.value() and debounce(BTN2):
        display_lcd([
            "Button 2 pressed",
            "Stopping process",
            "Status: Idle",
            "System ready"
        ])
        while not BTN2.value():
            time.sleep_ms(10)
    
    # Check Button 3
    elif not BTN3.value() and debounce(BTN3):
        display_lcd([
            "Menu options:",
            "1. System info",
            "2. Configuration",
            "3. Diagnostics"
        ])
        while not BTN3.value():
            time.sleep_ms(10)
    
    time.sleep_ms(50)
    
"""
#--------------------------LCD 1------------------------------#
####### TEST 1 ######

from machine import Pin, I2C
import time
from lcd_api import LcdApi  
from i2c_lcd import I2cLcd  # Using the newer i2c-lcd.py libraryy

# === WOKWI I2C LCD SETUP ===
# Default I2C pins in Wokwi (fixed for simulation)
I2C_SDA = Pin(21)
I2C_SCL = Pin(22)
LCD_ADDR = 0x27  # Try 0x3F if display doesn't work
LCD_ROWS = 4     # 4 rows
LCD_COLS = 20    # 20 columns


# Initialize I2C
i2c = I2C(0, sda=I2C_SDA, scl=I2C_SCL, freq=400000)

# Initialize LCD
lcd = I2cLcd(i2c, LCD_ADDR, LCD_ROWS, LCD_COLS)

# === BUTTON SETUP ===
SW1 = Pin(14, Pin.IN, Pin.PULL_UP)
SW2 = Pin(15, Pin.IN, Pin.PULL_UP)
SW3 = Pin(16, Pin.IN, Pin.PULL_UP)

# === LCD FUNCTIONS ===
def show_lcd(lines, clear=True):
    #---Display text on LCD (max 4 lines)---
    if clear:
        lcd.clear()
    for row, text in enumerate(lines[:4]):
        lcd.move_to(0, row)
        lcd.putstr(text)
    print("LCD:", lines)  # Debug output

def wait_release(button):
    while not button.value():  # Wait until button released
        time.sleep_ms(20)

# === MAIN PROGRAM ===
show_lcd([
    "Wokwi LCD 20x4 Test",
    "Press any button:",
    "SW1=Start",
    "SW2=Stop"
])

while True:
    if not SW1.value():  # Button 1 pressed
        show_lcd([
            "Button 1 Pressed",
            "Starting...",
            "Status: ACTIVE",
            "Task 1 Running"
        ])
        wait_release(SW1)
    
    elif not SW2.value():  # Button 2 pressed
        show_lcd([
            "Button 2 Pressed",
            "Stopping...",
            "Status: INACTIVE",
            "Shutting down"
        ])
        wait_release(SW2)
    
    elif not SW3.value():  # Button 3 pressed
        show_lcd([
            "EMERGENCY STOP!",
            "System HALTED",
            "Check logs",
            "Reset required"
        ])
        wait_release(SW3)
    
    time.sleep_ms(50)
#--------------------------------------------------------#

#--------------------------LCD 0------------------------------#
####### TEST 0 ######
from machine import Pin, I2C
import time
from esp8266_i2c_lcd import I2cLcd  # Wokwi-compatible LCD library

# === WOKWI I2C LCD SETUP ===
# Default I2C pins in Wokwi (fixed for simulation)
I2C_SDA = Pin(21)
I2C_SCL = Pin(22)
LCD_ADDR = 0x27  # Try 0x3F if display doesn't work
LCD_ROWS = 4     # 4 rows
LCD_COLS = 20    # 20 columns


# Initialize I2C
i2c = I2C(0, sda=I2C_SDA, scl=I2C_SCL, freq=400000)

# Initialize LCD
lcd = I2cLcd(i2c, LCD_ADDR, LCD_ROWS, LCD_COLS)

# === BUTTON SETUP ===
SW1 = Pin(14, Pin.IN, Pin.PULL_UP)
SW2 = Pin(15, Pin.IN, Pin.PULL_UP)
SW3 = Pin(16, Pin.IN, Pin.PULL_UP)

# === LCD FUNCTIONS ===
def show_lcd(lines, clear=True):
    #----Display text on LCD (max 4 lines)---
    if clear:
        lcd.clear()
    for row, text in enumerate(lines[:4]):
        lcd.move_to(0, row)
        lcd.putstr(text)
    print("LCD:", lines)  # Debug output

def wait_release(button):
    while not button.value():  # Wait until button released
        time.sleep_ms(20)

# === MAIN PROGRAM ===
show_lcd([
    "Wokwi LCD 20x4 Test",
    "Press any button:",
    "SW1=Start",
    "SW2=Stop"
])

while True:
    if not SW1.value():  # Button 1 pressed
        show_lcd([
            "Button 1 Pressed",
            "Starting...",
            "Status: ACTIVE",
            "Task 1 Running"
        ])
        wait_release(SW1)
    
    elif not SW2.value():  # Button 2 pressed
        show_lcd([
            "Button 2 Pressed",
            "Stopping...",
            "Status: INACTIVE",
            "Shutting down"
        ])
        wait_release(SW2)
    
    elif not SW3.value():  # Button 3 pressed
        show_lcd([
            "EMERGENCY STOP!",
            "System HALTED",
            "Check logs",
            "Reset required"
        ])
        wait_release(SW3)
    
    time.sleep_ms(50)
"""
""" ........ END........"""