from LCD import LCD_4bit
lcd = LCD_4bit([0,1,2,3,4,5])


main.py

diagram.json

''' LCD.py '''
from machine import Pin

class LCD_8bit:
    def __init__(self, D):
        self.D = [Pin(i, Pin.OUT) for i in D]
        self.RS = self.D[0]
        self.EN = self.D[1]

    def Write(self, a, rs=0):
        for i in range(2, 10):
            self.D[i].value(a >> i - 2 & 0x01)

        self.RS.value(rs)
        self.EN.on()
        self.EN.off()

    def init(self):
        self.Write(0x02)
        self.Write(0x28)
        self.Write(0x01)
        self.Write(0x0c)
        self.Write(0x06)
        self.Write(0x80)

    def setCursor(self, c=0, r=0):
        if r == 0:
            self.Write(0x80 + c)
        else:
            self.Write(0xC0 + c)

    def print(self, a, Halign=-1, Valign=0):
        if Halign != -1:
            if Halign == 1:
                self.setCursor(int((16 - len(str(a))) / 2), Valign)
            if Halign == 0:
                self.setCursor(0, Valign)
            if Halign == 2:
                self.setCursor(int((16 - len(str(a)))), Valign)
        for i in str(a):
                self.Write(ord(i), 1)
    def clear(self):
        self.Write(0x01)



class LCD_4bit:
    def __init__(self, D):
        self.D = [Pin(i, Pin.OUT) for i in D]
        self.RS = self.D[0]
        self.EN = self.D[1]
    
    def Write(self, a, rs=0):
        ldata = 0x00
        ldata = (a & 0xF0)
        self.port(ldata)
        self.RS.value(rs)
        self.EN.on()
        self.EN.off()
        ldata = ((a<<4) & 0xF0)
        self.port(ldata)
        self.EN.on()
        self.EN.off()

    def port(self,a):
        for i in range(2, 6):
            self.D[i].value(a >> (i + 2) & 0x01)


    def init(self):
        self.Write(0x02)
        self.Write(0x28)
        self.Write(0x0c)
        self.Write(0x06)
        self.Write(0x80)

    def setCursor(self, c=0, r=0):
        if r == 0:
            self.Write(0x80 + c)
        else:
            self.Write(0xC0 + c)
    def home(self):
        self.Write(0x02)

    def print(self, a, Halign=-1, Valign=0,float_p=-1):
        if(float_p!=-1):
            a = "{:.{}f}".format(a, float_p)
        if Halign != -1:
            if Halign == 1:
                self.setCursor(int((16 - len(str(a))) / 2), Valign)
            if Halign == 0:
                self.setCursor(0, Valign)
            if Halign == 2:
                self.setCursor(int((16 - len(str(a)))), Valign)
        for i in str(a):
                self.Write(ord(i), 1)
    def clear(self):
        self.Write(0x01)

class LCD_I2C:
    def __init__(self, i2c, addr):
        self.i2c = i2c
        self.addr = addr
        self.LED = 3
        self.backlight = 1 << self.LED
        self.RS = 0
        self.RW = 1
        self.EN = 2

    def Write(self, data, RS=0):
        highnib = RS | (data & 0xF0) | self.backlight
        lownib = RS | ((data << 4) & 0xF0) | self.backlight
        self.i2c.writeto(self.addr, bytearray([highnib | (1 << self.EN)]))
        utime.sleep_us(2)
        self.i2c.writeto(self.addr, bytearray([highnib & ~(1 << self.EN)]))
        self.i2c.writeto(self.addr, bytearray([lownib | (1 << self.EN)]))
        utime.sleep_us(2)
        self.i2c.writeto(self.addr, bytearray([lownib & ~(1 << self.EN)]))
        utime.sleep_us(100)

    def init(self):
        self.Write(0x03)
        utime.sleep_ms(5)
        self.Write(0x03)
        utime.sleep_us(200)
        self.Write(0x03)
        utime.sleep_us(200)
        self.Write(0x02)
        self.Write(0x28)
        self.Write(0x0C)
        self.Write(0x06)
        self.Write(0x01)

    def setCursor(self, c=0, r=0):
        if r == 0:
            self.Write(0x80 + c)
        else:
            self.Write(0xC0 + c)

    def print(self, a, Halign=-1, Valign=0, float_p=-1):
        if float_p != -1:
            a = "{:.{}f}".format(a, float_p)
            if Halign == 1:
                self.setCursor(int((16 - len(str(a))) / 2), Valign)
            if Halign == 0:
                self.setCursor(0, Valign)
            if Halign == 2:
                self.setCursor(int((16 - len(str(a)))), Valign)
        for i in str(a):
            self.Write(ord(i), 1)

    def clear(self):
        self.Write(0x01)

    def home(self):
        self.Write(0x02)

    def Backlight(self, a):
        if a == 1:
            self.backlight = 1 << self.LED
        else:
            self.backlight = 0
        self.i2c.writeto(self.addr, bytearray([0x00|self.backlight]))
