from machine import Pin
import time

class ShiftRegisterController_74HC595:

    def __init__(self, serial_data_pin, shift_register_clock_pin, store_register_clock_pin):
        self.SD = Pin(serial_data_pin, Pin.OUT)
        self.SH_CP = Pin(shift_register_clock_pin, Pin.OUT)
        self.ST_CP = Pin(store_register_clock_pin, Pin.OUT)
    #END_DEF
        
    def CheckOutputLeds(self):
        for bit in range(8):
            self.SD.value(1)
            time.sleep_ms(5)
            
            self.SH_CP.low()
            time.sleep_ms(5)
            self.SH_CP.high()
            time.sleep_ms(5)
            
            self.ST_CP.low()
            time.sleep_ms(5)
            self.ST_CP.high()
            print("Bit latched...")
            time.sleep_ms(500)
        #END_FOR

        for bit in range(8):
            self.SD.value(0)
            time.sleep_ms(5)
            
            self.SH_CP.low()
            time.sleep_ms(5)
            self.SH_CP.high()
            time.sleep_ms(5)
            
            self.ST_CP.low()
            time.sleep_ms(5)
            self.ST_CP.high()
            print("Bit latched...")
            time.sleep_ms(500)
        #END_FOR
    #END_DEF
    
    def ClearOutputLeds(self):
        self.SD.value(0)
        time.sleep_ms(5)
            
        for bit in range(8):
            self.SH_CP.low()
            time.sleep_ms(5)
            self.SH_CP.high()
            time.sleep_ms(5)
        #END_FOR
        
        self.ST_CP.low()
        time.sleep_ms(5)
        self.ST_CP.high()
        time.sleep_ms(5)
        print("Bits latched low...")
    #END_DEF
            
    def Latch8BitValue(self, value):
        for bit in range(8):
            shifted_value = value >> (7 - bit)
            bit_value = 1 & shifted_value
            self.SD.value(bit_value)
            time.sleep_ms(5)
            
            self.SH_CP.low()
            time.sleep_ms(5)
            self.SH_CP.high()
            time.sleep_ms(5)
            
            self.ST_CP.low()
            time.sleep_ms(5)
            self.ST_CP.high()
            print("Bit latched...")
            time.sleep_ms(500)
    #END_DEF
#END_CLASS

#BEGIN_PROGRAM
Controller = ShiftRegisterController_74HC595(0, 2, 1)
Controller.ClearOutputLeds()
Controller.CheckOutputLeds()
Controller.ClearOutputLeds()
Controller.Latch8BitValue(int('10000000', 2))
#END_PROGRAM