import machine
import utime
 
rs = machine.Pin(4,machine.Pin.OUT)
e = machine.Pin(5,machine.Pin.OUT)
d4 = machine.Pin(0,machine.Pin.OUT)
d5 = machine.Pin(1,machine.Pin.OUT)
d6 = machine.Pin(2,machine.Pin.OUT)
d7 = machine.Pin(3,machine.Pin.OUT)
 
def pulseE():
    e.value(1)
    utime.sleep_us(40)
    e.value(0)
    utime.sleep_us(40)
def send2LCD4(BinNum):
    d4.value((BinNum & 0b00000001) >>0)
    d5.value((BinNum & 0b00000010) >>1)
    d6.value((BinNum & 0b00000100) >>2)
    d7.value((BinNum & 0b00001000) >>3)
    pulseE()
def send2LCD8(BinNum):
    d4.value((BinNum & 0b00010000) >>4)
    d5.value((BinNum & 0b00100000) >>5)
    d6.value((BinNum & 0b01000000) >>6)
    d7.value((BinNum & 0b10000000) >>7)
    pulseE()
    d4.value((BinNum & 0b00000001) >> 0)
    d5.value((BinNum & 0b00000010) >> 1)
    d6.value((BinNum & 0b00000100) >> 2)
    d7.value((BinNum & 0b00001000) >> 3)
    pulseE()
def setUpLCD():
    rs.value(0)
    send2LCD4(0b0011)#8 bit
    send2LCD4(0b0011)#8 bit
    send2LCD4(0b0011)#8 bit
    send2LCD4(0b0010)#4 bit
    send2LCD8(0b00101000)#4 bit,2 lines?,5*8 bots
    send2LCD8(0b00001100)#lcd on, blink off, cursor off.
    send2LCD8(0b00000110)#increment cursor, no display shift
    send2LCD8(0b00000001)#clear screen
    utime.sleep_ms(2)#clear screen needs a long delay
 
setUpLCD()
rs.value(1)
for x in 'Hello World!':
    send2LCD8(ord(x))
    utime.sleep_ms(100)