'''
Pins Connections to Display

a = Pin5
b = Pin19
c = Pin2
d = Pin0
e = Pin4
f = Pin18
g = Pin15

dig1 = Pin21
dig2 = Pin33
dig3 = Pin25
dig4 = Pin26

'''
from machine import Pin
import time

def display_number(Display_Pins,number,CC_CA):
    # 7-Seg Truth Table
    Seg_values = [[1,1,1,1,1,1,0],
              [0,1,1,0,0,0,0],
              [1,1,0,1,1,0,1],
              [1,1,1,1,0,0,1],
              [0,1,1,0,0,1,1],
              [1,0,1,1,0,1,1],
              [1,0,1,1,1,1,1],
              [1,1,1,0,0,0,0],
              [1,1,1,1,1,1,1],
              [1,1,1,1,0,1,1]]
    for i,val in enumerate(Seg_values[number]):
        Display_Pins[i].value(val ^ CC_CA) # XOR Operation

def reset_display(Display_Pins,CC_CA):
    for i in range(0,7):
        Display_Pins[i].value(CC_CA)

def display_4_numbers(Display_Pins,Digit_Pins,number,CC_CA):
    digit4 = int(number / 1000)
    digit3 = int(number / 100) - digit4 * 10
    digit2 = int(number / 10) - digit4 * 100 - digit3 * 10 
    digit1 = int(number / 1) - digit4 * 1000 - digit3 * 100 - digit2 * 10
    for i in range(1,10):
        Digit_Pins[3].value(not(CC_CA))
        Digit_Pins[2].value(not(CC_CA))
        Digit_Pins[1].value(not(CC_CA))
        Digit_Pins[0].value(CC_CA)
        display_number(Display_Pins,digit4,CC_CA)
        time.sleep(0.01)
        reset_display(Display_Pins,CC_CA)

        Digit_Pins[3].value(not(CC_CA))
        Digit_Pins[2].value(not(CC_CA))
        Digit_Pins[1].value(CC_CA)
        Digit_Pins[0].value(not(CC_CA))
        display_number(Display_Pins,digit3,CC_CA)
        time.sleep(0.01)
        reset_display(Display_Pins,CC_CA)

        Digit_Pins[3].value(not(CC_CA))
        Digit_Pins[2].value(CC_CA)
        Digit_Pins[1].value(not(CC_CA))
        Digit_Pins[0].value(not(CC_CA))
        display_number(Display_Pins,digit2,CC_CA)
        time.sleep(0.01)
        reset_display(Display_Pins,CC_CA)

        Digit_Pins[3].value(CC_CA)
        Digit_Pins[2].value(not(CC_CA))
        Digit_Pins[1].value(not(CC_CA))
        Digit_Pins[0].value(not(CC_CA))
        display_number(Display_Pins,digit1,CC_CA)
        time.sleep(0.01)
        reset_display(Display_Pins,CC_CA)




a = Pin(5,Pin.OUT)
b = Pin(19,Pin.OUT)
c = Pin(2,Pin.OUT)
d = Pin(0,Pin.OUT)
e = Pin(4,Pin.OUT)
f = Pin(18,Pin.OUT)
g = Pin(15,Pin.OUT)

dig1 = Pin(21,Pin.OUT,value=1)
dig2 = Pin(33,Pin.OUT,value=1)
dig3 = Pin(25,Pin.OUT,value=1)
dig4 = Pin(26,Pin.OUT,value=1)

LEDS = [a,b,c,d,e,f,g]
Digits = [dig1,dig2,dig3,dig4]

while True:
    for number in range(0,10000):
        display_4_numbers(LEDS,Digits,number,1)