2. Organising code with definitions for the Breadboard

2.1. Code comparison

Write code that displays a message “A or B”.
When A is pressed, turn on the motor on pin 0 for 3 sec.
When B is pressed, turn on the LED on pin 1 for 1 sec at full brightness,
then 1 sec at half brightness, then off.

code in sequence without definitions

code organised with definitions

from microbit import *

display.scroll('A or B')
while True:
    if button_a.is_pressed():
        # on pin 0
        pin0.write_digital(1)
        sleep(3000)
        pin0.write_digital(0)
    elif button_b.is_pressed():
        # on pin 1
        pin1.write_digital(1)
        sleep(1000)
        pin1.write_analog(511)
        sleep(1000)
        pin1.write_digital(0)
    sleep(100)

from microbit import *

def display_startup_message():
    display.scroll('A or B')

def use_motor_A():
    # on pin 0
    pin0.write_digital(1)
    sleep(3000)
    pin0.write_digital(0)

def use_LEDs_B():
    # on pin 1
    pin1.write_digital(1)
    sleep(1000)
    pin1.write_analog(511)
    sleep(1000)
    pin1.write_digital(0)

display_startup_message()
while True:
    if button_a.is_pressed():
        use_motor_A()
    elif button_b.is_pressed():
        use_LEDs_B()
    sleep(100)