#made by partly DIEGO but mostly by VIE ;-)

#The red button is an on/off switch
#The yellow button clears the screan and returns the curor
#The green button moves the cursor to the right and back to the left once the "X" is all the way right
#The blue button moves the cursor up and back to the bottom once the "X" is all the way up
#(avec l'utilisation des bibliothèques "lcd_api.py" et "pico_i2c_lcd.py")

#----Import de Bibliothèques----------------------------------------------
from machine import Pin, I2C, ADC
from time import sleep_ms
from lcd_api import LcdApi
from pico_i2c_lcd import I2cLcd

#----Entrées Boutons----------------------------------------------
button_rouge = Pin(13, Pin.IN, Pin.PULL_UP)
button_jaune = Pin(11, Pin.IN, Pin.PULL_UP)

#----Sorties Ecran LCD1----------------------------------------------
I2C_ADDR1 = 39       #adresse I2D
I2C_NUM_ROWS1 = 2    #nombre de lignes
I2C_NUM_COLS1 = 16   #nombre de colonnes

i2c1 = I2C(1, sda=Pin(2, Pin.OUT), scl=Pin(3, Pin.OUT), freq=400000)
lcd1 = I2cLcd(i2c1, I2C_ADDR1, I2C_NUM_ROWS1, I2C_NUM_COLS1)

#----Sorties Ecran LCD2----------------------------------------------
I2C_ADDR2 = 39       #adresse I2D
I2C_NUM_ROWS2 = 2    #nombre de lignes
I2C_NUM_COLS2 = 16   #nombre de colonnes

i2c2 = I2C(0, sda=Pin(0, Pin.OUT), scl=Pin(1, Pin.OUT), freq=400000)
lcd2 = I2cLcd(i2c2, I2C_ADDR2, I2C_NUM_ROWS2, I2C_NUM_COLS2)

#----Entrées Joystick 2 ----------------------------------------------

#xValue = xAxis.read_u16()
#Position gauche du joystick : 65535
#Position milieu (neutre) du joystick : 32759
#Position droite du joystick : 0

#yValue = yAxis.read_u16()
#Position haute du joystick : 65535
#Position milieu (neutre) du joystick : 32759
#Position basse du joystick : 0

joy_right = Pin(7, Pin.IN, Pin.PULL_UP)
joy_up = Pin(8, Pin.IN, Pin.PULL_UP)
joy_left = Pin(9, Pin.IN, Pin.PULL_UP)
joy_down = Pin(11, Pin.IN, Pin.PULL_UP)
#----Entrées Joystick 1 ----------------------------------------------

#xValue = xAxis.read_u16()
#Position gauche du joystick : 65535
#Position milieu (neutre) du joystick : 32759
#Position droite du joystick : 0

#yValue = yAxis.read_u16()
#Position haute du joystick : 65535
#Position milieu (neutre) du joystick : 32759
#Position basse du joystick : 0

xAxis = ADC(Pin(26))
yAxis = ADC(Pin(27))
button_push = Pin(28, Pin.IN, Pin.PULL_UP)

#----CREATION de fonctions----------------------------------------------
def eteindre_ecran_all():
    lcd1.backlight_off()
    lcd2.backlight_off()
    print("éteindre_ecran()")

def allumer_ecran_all():
    lcd1.backlight_on()
    lcd2.backlight_on()
    print("allumer_ecran()")

def clear_ecran_all():
    lcd1.clear()
    lcd2.clear()
    print("clear_ecran()")

def X_wall_line():
    if line == 0:
        print("left wall")        
        return("left_wall")
    elif line == 15:
        print("right wall")    
        return("right_wall")

def X_wall_colomn():
    if colomnNumber == 1:
        print("bottom wall")    
        return("bottom_wall")
    elif colomnNumber == 4:
        print("top wall")        
        return("top_wall")



def put_X():
    if screansOn == True:
        if screanClear == False:
            if onScreen1 == True:
                lcd1.move_to(line,colomn)
                lcd1.putstr("X")
            else:
                lcd2.move_to(line,colomn)
                lcd2.putstr("X")
        else:
            lcd2.putstr("'X' not on screan")
            lcd1.putstr("press yellow")
            print("'X' not on screan, press yellow")
    else:
        clear_ecran_all()
        lcd2.putstr("screans are off")
        lcd1.putstr("press red")
        print("screan is off, press red")
    sleep_ms(sleepTime)

#-----Conditions initiales---------------------------------------------
allumer_ecran_all()
clear_ecran_all()
print("screan on")

#----Début du programme----------------------------------------------
print(i2c1.scan(),i2c2.scan(),)       #scanner un bus I2C et renvoyer une liste d'adresses I2C valides qui sont connectées à ce bus
line = 0
colomn = 0
onScreen1 = True
screansOn = True
screanClear = False
colomnNumber = 2
sleepTime = 500
lcd1.move_to(line,colomn)
lcd1.putstr("X")
while True:
    if button_rouge.value() == 0 :
        print("button_rouge appuyé")    #red button - on/off button
        if screansOn == True:
            eteindre_ecran_all()
            sleep_ms(sleepTime)
            screansOn = False
        else:
            clear_ecran_all()          #clearing the error message if there is one and returning the "X"
            allumer_ecran_all()
            sleep_ms(sleepTime)
            screansOn = True
            if onScreen1 == True:
                lcd1.move_to(line,colomn)
                lcd1.putstr("X")
            else:
                lcd2.move_to(line,colomn)
                lcd2.putstr("X")
            screanClear = False

    if button_jaune.value() == 0:
        print("button_jaune appuyé")            #yellow button - clear screan
        if screanClear == False:
            clear_ecran_all()
            sleep_ms(sleepTime)
            screanClear = True
        else:
            if onScreen1 == True:               #yellow button - unclear screan
                clear_ecran_all()
                lcd1.move_to(line,colomn)
                lcd1.putstr("X")
            else:
                lcd2.move_to(line,colomn)
                lcd2.putstr("X")
            sleep_ms(sleepTime)
            print("unclear screan")
            screanClear = False

    xValue = xAxis.read_u16()                           #lecture de la valeur sur X du joystick
    yValue = yAxis.read_u16()                           #lecture de la valeur sur Y du joystick 
    if xValue == 65535:
        if X_wall_line() == "left_wall":
            line = 15
        else:
            line -= 1
        clear_ecran_all()
        put_X()
        print("go left")

    if xValue == 0:
        if X_wall_line() == "right_wall":
            line = 0
        else:
            line += 1
        clear_ecran_all()
        put_X()

    if yValue == 65535:
        if X_wall_colomn() == "top_wall":
            colomnNumber = 1
        else:
            colomnNumber += 1
        if colomnNumber == 1 or colomnNumber == 3:
            colomn = 1
        else:
            colomn = 0
        if colomnNumber == 3 or colomnNumber == 4 :
            onScreen1 = False
        else:
            onScreen1 = True
        clear_ecran_all()
        put_X()
        print("go up")
        print("colomn number", colomnNumber)
    
    if yValue == 0:
        if X_wall_colomn() == "bottom_wall":
            print("bottom wall")
            colomnNumber = 4
        else:
            colomnNumber -= 1     
        if colomnNumber == 1 or colomnNumber == 3:
            colomn = 1
        else:
            colomn = 0
        if colomnNumber == 3 or colomnNumber == 4 :
            onScreen1 = False
        else:
            onScreen1 = True
        clear_ecran_all()
        put_X()
        print("go down")
        print("colomn number", colomnNumber)