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

# ----Sortie LED----------------------------------------------
led_rouge = Pin(18, Pin.OUT)
led_vert = Pin(19, Pin.OUT)
led_jaune = Pin(20, Pin.OUT)

# ----Entrée Bouton----------------------------------------------
button_rouge = Pin(13, Pin.IN, Pin.PULL_UP)
button_vert = Pin(12, Pin.IN, Pin.PULL_UP)
button_jaune = Pin(11, Pin.IN, Pin.PULL_UP)

# ----Sorties Ecran LCD----------------------------------------------
I2C_ADDR = 39       # adresse I2C
I2C_NUM_ROWS = 2    # nombre de lignes
I2C_NUM_COLS = 16   # nombre de colonnes

i2c = I2C(1, sda=Pin(2, Pin.OUT), scl=Pin(3, Pin.OUT), freq=400000)
lcd = I2cLcd(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)

# ----CREATION de fonctions----------------------------------------------
def eteindre_ecran():
    lcd.backlight_off()
    print("éteindre_ecran()")

def allumer_ecran():
    lcd.backlight_on()
    print("allumer_ecran()")

def clear_ecran():
    lcd.clear()
    print("clear_ecran()")

# -----Conditions initiales---------------------------------------------
# ----LED éteintes---------------------------------------------
led_rouge.value(0)
led_vert.value(0)
led_jaune.value(0)
# ----Ecran LCD---------------------------------------------
allumer_ecran()
clear_ecran()

# ----Début du programme----------------------------------------------
print(i2c.scan())       # scanner un bus I2C et renvoyer une liste d'adresses I2C valides qui sont connectées à ce bus

while True:
    if button_vert.value() == 0:
        allumer_ecran()
        led_vert.value(1)
        clear_ecran()
        lcd.putstr("machine en marche")
    else:
        led_vert.value(0)

    if button_rouge.value() == 0:
        allumer_ecran()
        led_rouge.value(1)
        clear_ecran()
        lcd.putstr("machine en panne")
    else:
        led_rouge.value(0)

    if button_jaune.value() == 0:
        allumer_ecran()
        led_jaune.value(1)
        clear_ecran()
        lcd.putstr("machine en cours d'intervention")
    else:
        led_jaune.value(0)