read_pins

def read_pins():
    pins = {
        0 : pfio.digital_read(0),
        1 : pfio.digital_read(1),
        2 : pfio.digital_read(2),
        3 : pfio.digital_read(3),
        4 : pfio.digital_read(4),
        5 : pfio.digital_read(5),
        6 : pfio.digital_read(6),
        7 : pfio.digital_read(7)
        }
    return pins

def check_input_changes(prev, curr):
    i = 0
    changes = []
    while i < 8:
        if prev[i] == curr[i]:
            pass
            # no change, do nothing
        elif (prev[i] > curr[i]):
            chg = {
                "pin" : i,
                "change" : "off"
                }
            changes.append(chg)
        elif (prev[i] < curr[i]):
            chg = {
                "pin" : i,
                "change" : "on"
                }
            changes.append(chg)
        i = i + 1

    change_report = {
        "time" : time.time(),
        "changes" : changes,
        "diff" : len(changes)
        }

    return change_report


if __name__ == '__main__':
    pfio.init()

    pins = {
        0 : 0,
        1 : 0,
        2 : 0,
        3 : 0,
        4 : 0,
        5 : 0,
        6 : 0,
        7 : 0
        }

    while True:
        prev_pins = pins
        pins = read_pins()
        change_report = check_input_changes(prev_pins, pins)
        time.sleep(.05)