from lcdi2c import*

lcd_start()
cmd_wrt(0xc0+0)
string_write("LAB 6")
cmd_wrt(0xc0+8)
string_write("EMBEDDED")

while 1:
    for i in range(0,80,2):
        cmd_wrt(0x80+4)
        string_write("Count:")
        string_write(str(zfl_0(i,2)))
        sleep(0.2)




        

main.py

diagram.json

from machine import Pin,I2C
from time import sleep

lcd = I2C(0, scl=Pin(1), sda=Pin(0), freq=400_000)
add=lcd.scan()  #scan address
print("device:",add)
lcd_address=add[0]
e=0x04
rs=0x01
rw=0x02
bl=0x08

def write(value,rs_pin,pin_bl):    
    dataline=value&0xf0
    if(rs_pin==1):
        dataline=dataline|rs
    if(pin_bl==1):
        dataline=dataline|bl
    lcd.writeto(lcd_address, bytes([dataline])) # e=0 
    sleep(0.02)
    lcd.writeto(lcd_address, bytes([dataline|e])) # e=1 
    sleep(0.02)
    
    dataline=(value&0x0f)<<4
    if(rs_pin==1):
        dataline=dataline|rs
    if(pin_bl==1):
        dataline=dataline|bl
    lcd.writeto(lcd_address, bytes([dataline])) # e=0 
    sleep(0.02)
    lcd.writeto(lcd_address, bytes([dataline|e])) # e=1 
    sleep(0.02)   

def cmd_wrt(value):  # write cmd
    write(value,0,1)

def data_wrt(value): #cmd write
    write(value,1,1)

def lcd_start():   
    cmd_wrt(0x02)
    sleep(0.1)
    cmd_wrt(0x28)
    sleep(0.1)
    cmd_wrt(0x0c)
    sleep(0.1)
    cmd_wrt(0x01)
    cmd_wrt(0x80)

def string_write(value):
    for i in value:
        data_wrt(ord(i))

def zfl(s,width):
    return '{:''>{w}}'.format(s,w=width)

def zfl_0(s,width):
    return '{:0''>{w}}'.format(s,w=width)




   