import lcd4bit as lcd
from utime import sleep

lcd.cmdwrite(0xc0+4)
lcd.strwrite("haii"+" "+"haii")
lcd.cmdwrite(0x85)
lcd.strwrite("tsttt")
sleep(1)
lcd.cmdwrite(0x01)
while 1:
    for i in range(100):
        lcd.cmdwrite(0x85)
        lcd.strwrite("count:"+lcd.zfl(str(i),2))
        sleep(0.5)



main.py

diagram.json

from machine import Pin
from utime import sleep

rs=Pin(0,Pin.OUT)
e=Pin(1,Pin.OUT)
dataline=(Pin(6,Pin.OUT),Pin(7,Pin.OUT),
          Pin(8,Pin.OUT),Pin(9,Pin.OUT))

def write(val):
    for i in range(4):
        dataline[i].value(((val>>4)&(0x01<<i))>>i)
    e.value(0)
    sleep(0.001)
    e.value(1)
    sleep(0.001)
    for i in range(4):
        dataline[i].value(((val)&(0x01<<i))>>i)
    e.value(0)
    sleep(0.001)
    e.value(1)
    sleep(0.001)
  
def datawrite(val):
    rs.value(1)
    write(val)

def cmdwrite(val):
    rs.value(0)
    write(val)
    sleep(0.01)

def startlcd():
    cmdwrite(0x02)
    sleep(0.01)
    cmdwrite(0x28)
    sleep(0.01)
    cmdwrite(0x0c)
    sleep(0.01)
    cmdwrite(0x01)
    sleep(0.01)
    cmdwrite(0x80)
    sleep(0.01)

def strwrite(word):
    for i in word:
        datawrite(ord(i))

def zfl(s, width):
# Pads the provided string with leading 0's to suit the specified 'chrs' length
# Force # characters, fill with leading 0's
    return '{:0>{w}}'.format(s, w=width)

startlcd()




