from machine import Pin
from time import sleep
print("\n---- START ---\n")
'''
  VCC  Q0  DS  OE STCP SHCP  MR  Q7S
  16   15  14  13  12   11   10   9
    Pinbelegung 74HC505 - DIL 16
   1    2   3   4   5    6    7   8 
  Q1   Q2  Q3  Q4  Q5   Q6   Q7  GND    
'''
data  = Pin( 5, Pin.OUT)   # D5 --- hellgrün --- Pin 14,  DS / SER
latch = Pin( 4, Pin.OUT)   # D2 ---   gelb   --- Pin 12, ST_CP / RCLK
clock = Pin( 2, Pin.OUT)   # D4 ---   cyan   --- Pin 11, SH_CP / SRCLK " "
oe    = Pin(18, Pin.OUT)   # D18 --- ocker   --- Pin 15, OE "Output Enable"
mr    = Pin(19, Pin.OUT)   # D19 --- weiß    --- Pin 10, MR "Master Reset"
oe.on()
data.off()
latch.off()
clock.off()
mr.on()

data_set  = Pin(26, Pin.IN) 
clock_set  = Pin(27, Pin.IN) 
latch_set  = Pin(12, Pin.IN) 
oe_set  = Pin(13, Pin.IN) 
mr_set  = Pin(25, Pin.IN) 

letzter  =0

n1 = n2 = n3 = n4 = n5 = 0

while True:
    if data_set.value():
        n1 += 1
    else:
        if n1:
            print("data")
            n1 = 0
            data.value(not data.value())

    if latch_set.value():
        n2 += 1
    else:
        if n2:
            print("latch")
            n2 = 0
            latch.value(not latch.value())
    if clock_set.value():
        n3 += 1
    else:
        if n3:
            print("clock")
            n3 = 0
            clock.value(not clock.value())

    if oe_set.value():
        n4 += 1
    else:
        if n4:
            print("Output enable")
            n4 = 0
            oe.value(not oe.value())
    if mr_set.value():
        n5 += 1
    else:
        if n5:
            print("Master reset")
            n5 = 0
            mr.value(not mr.value())            
    sleep(0.05)