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7segment.py
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#!/usr/bin/env python
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
digit = 0
A = 22
B = 27
C = 4
D = 24
E = 25
F = 18
G =23
DP = 17
upswitch = 11
downswitch = 7
GPIO.setup(upswitch, GPIO.IN)
GPIO.setup(downswitch, GPIO.IN)
GPIO.setup(A, GPIO.OUT)
GPIO.setup(B, GPIO.OUT)
GPIO.setup(C, GPIO.OUT)
GPIO.setup(D, GPIO.OUT)
GPIO.setup(E, GPIO.OUT)
GPIO.setup(F, GPIO.OUT)
GPIO.setup(G, GPIO.OUT)
GPIO.setup(DP, GPIO.OUT)
GPIO.output(A,GPIO.LOW)
GPIO.output(B,GPIO.LOW)
GPIO.output(C,GPIO.LOW)
GPIO.output(D,GPIO.LOW)
GPIO.output(E,GPIO.LOW)
GPIO.output(F,GPIO.LOW)
GPIO.output(G,GPIO.LOW)
GPIO.output(DP,GPIO.LOW)
def displaydigit(digit):
if digit == 0:
GPIO.output(A, GPIO.HIGH)
GPIO.output(B, GPIO.HIGH)
GPIO.output(C, GPIO.HIGH)
GPIO.output(D, GPIO.HIGH)
GPIO.output(E, GPIO.HIGH)
GPIO.output(F, GPIO.HIGH)
GPIO.output(G, GPIO.LOW)
GPIO.output(DP, GPIO.LOW)
return
elif digit == 1:
GPIO.output(A, GPIO.LOW)
GPIO.output(B, GPIO.HIGH)
GPIO.output(C, GPIO.HIGH)
GPIO.output(D, GPIO.LOW)
GPIO.output(E, GPIO.LOW)
GPIO.output(F, GPIO.LOW)
GPIO.output(G, GPIO.LOW)
GPIO.output(DP, GPIO.LOW)
return
elif digit == 2:
GPIO.output(A, GPIO.HIGH)
GPIO.output(B, GPIO.HIGH)
GPIO.output(C, GPIO.LOW)
GPIO.output(D, GPIO.HIGH)
GPIO.output(E, GPIO.HIGH)
GPIO.output(F, GPIO.LOW)
GPIO.output(G, GPIO.HIGH)
GPIO.output(DP, GPIO.LOW)
return
elif digit == 3:
GPIO.output(A, GPIO.HIGH)
GPIO.output(B, GPIO.HIGH)
GPIO.output(C, GPIO.HIGH)
GPIO.output(D, GPIO.HIGH)
GPIO.output(E, GPIO.LOW)
GPIO.output(F, GPIO.LOW)
GPIO.output(G, GPIO.HIGH)
GPIO.output(DP, GPIO.LOW)
return
elif digit == 4:
GPIO.output(A, GPIO.LOW)
GPIO.output(B, GPIO.HIGH)
GPIO.output(C, GPIO.HIGH)
GPIO.output(D, GPIO.LOW)
GPIO.output(E, GPIO.LOW)
GPIO.output(F, GPIO.HIGH)
GPIO.output(G, GPIO.HIGH)
GPIO.output(DP, GPIO.LOW)
return
elif digit == 5:
GPIO.output(A, GPIO.HIGH)
GPIO.output(B, GPIO.LOW)
GPIO.output(C, GPIO.HIGH)
GPIO.output(D, GPIO.HIGH)
GPIO.output(E, GPIO.LOW)
GPIO.output(F, GPIO.HIGH)
GPIO.output(G, GPIO.HIGH)
GPIO.output(DP, GPIO.LOW)
return
elif digit == 6:
GPIO.output(A, GPIO.HIGH)
GPIO.output(B, GPIO.LOW)
GPIO.output(C, GPIO.HIGH)
GPIO.output(D, GPIO.HIGH)
GPIO.output(E, GPIO.HIGH)
GPIO.output(F, GPIO.HIGH)
GPIO.output(G, GPIO.HIGH)
GPIO.output(DP, GPIO.LOW)
return
elif digit == 7:
GPIO.output(A, GPIO.HIGH)
GPIO.output(B, GPIO.HIGH)
GPIO.output(C, GPIO.HIGH)
GPIO.output(D, GPIO.LOW)
GPIO.output(E, GPIO.LOW)
GPIO.output(F, GPIO.LOW)
GPIO.output(G, GPIO.LOW)
GPIO.output(DP, GPIO.LOW)
return
elif digit == 8:
GPIO.output(A, GPIO.HIGH)
GPIO.output(B, GPIO.HIGH)
GPIO.output(C, GPIO.HIGH)
GPIO.output(D, GPIO.HIGH)
GPIO.output(E, GPIO.HIGH)
GPIO.output(F, GPIO.HIGH)
GPIO.output(G, GPIO.HIGH)
GPIO.output(DP, GPIO.LOW)
return
elif digit == 9:
GPIO.output(A, GPIO.HIGH)
GPIO.output(B, GPIO.HIGH)
GPIO.output(C, GPIO.HIGH)
GPIO.output(D, GPIO.HIGH)
GPIO.output(E, GPIO.LOW)
GPIO.output(F, GPIO.HIGH)
GPIO.output(G, GPIO.HIGH)
GPIO.output(DP, GPIO.LOW)
return
prev_down = 0
prev_up = 0
updigit = GPIO.input(upswitch)
downdigit = GPIO.input(downswitch)
while True:
#take a reading
displaydigit(digit)
#if the last reading was low and this one high, print
if ((not prev_up) and updigit):
digit = abs(digit + 1)
#update previous input
#slight pause to debounce
#if the last reading was low and this one high, print
if ((not prev_down) and downdigit):
digit = abs(digit - 1)
#update previous input
prev_down = downdigit
prev_up = updigit
#slight pause to debounce
time.sleep(0.05)
GPIO.cleanup()