2. Radio A or B

2.1. Send on button pressing

Set up the group in pairs with a value 0-255 by modifying the group in: radio.config(group=8).

Turn on the radio using: radio.on()

Use button_a.was_pressed() to send a message, “A”.

Scroll any received messages.

if incoming_message: is True is a message is received. It is False if radio.receive() returns None when there is no message received.

from microbit import *
import radio

# Choose own group in pairs 0-255
radio.config(group=8)
# Turn on the radio
radio.on()

while True:
    # send
    if button_a.was_pressed():
        radio.send("A")
    # receive
    incoming_message = radio.receive()
    if incoming_message:
        display.scroll(incoming_message)

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Tasks

1. Modify the code to add sending “B” if the B-button was pressed.

2. Modify the code to send “T” or “F” from button pressing so it can be used to respond to True or False questions.

3. Modify the code to send “Y” or “N” from button pressing so it can be used to respond to Yes or No questions.

4. Modify the code to send “Y” or “N” from button pressing and then show the Image.YES if “Y” is received, and the Image.NO if “N” is received.

5. Modify the code to send “Y” and show the Image.YES, or “N” and show the Image.NO, from button pressing and then show the Image.YES if “Y” is received, and the Image.NO if “N” is received.

Q1

Modify the code to add sending “B” if the B-button was pressed.

from microbit import *
import radio

# Choose own group in pairs 0-255
radio.config(group=8)
# Turn on the radio
radio.on()

while True:
    # send
    if button_a.was_pressed():
        radio.send("A")
    elif button_b.was_pressed():
        radio.send("B")
    # receive
    incoming_message = radio.receive()
    if incoming_message:
        display.scroll(incoming_message)

Q2

Modify the code to send “T” or “F” from button pressing so it can be used to response True and False questions.

from microbit import *
import radio

# Choose own group in pairs 0-255
radio.config(group=8)
# Turn on the radio
radio.on()

while True:
    # send
    if button_a.was_pressed():
        radio.send("T")
    elif button_b.was_pressed():
        radio.send("F")
    # receive
    incoming_message = radio.receive()
    if incoming_message:
        display.scroll(incoming_message)

Q3

Modify the code to send “Y” or “N” from button pressing so it can be used to response Yes or No questions.

from microbit import *
import radio

# Choose own group in pairs 0-255
radio.config(group=8)
# Turn on the radio
radio.on()

while True:
    # send
    if button_a.was_pressed():
        radio.send("Y")
    elif button_b.was_pressed():
        radio.send("N")
    # receive
    incoming_message = radio.receive()
    if incoming_message:
        display.scroll(incoming_message)

Q4

Modify the code to send “Y” or “N” from button pressing and then show the Image.YES if “Y” is received, and the Image.NO if “N” is received.

from microbit import *
import radio

# Turn on the radio
radio.on()
# Choose own group in pairs 0-255
radio.config(group=8)

while True:
    if button_a.was_pressed():
        radio.send("Y")
    elif button_b.was_pressed():
        radio.send("N")
    incoming_message = radio.receive()
    if incoming_message:
        if incoming_message == "Y":
            display.show(Image.YES)
        elif incoming_message == "N":
            display.show(Image.NO)

Q5

Modify the code to send “Y” and show the Image.YES, or “N” and show the Image.NO, from button pressing and then show the Image.YES if “Y” is received, and the Image.NO if “N” is received.

from microbit import *
import radio

# Turn on the radio
radio.on()
# Choose own group in pairs 0-255
radio.config(group=8)

while True:
    if button_a.was_pressed():
        radio.send("Y")
        display.show(Image.YES)
    elif button_b.was_pressed():
        radio.send("N")
        display.show(Image.NO)
    incoming_message = radio.receive()
    if incoming_message:
        if incoming_message == "Y":
            display.show(Image.YES)
        elif incoming_message == "N":
            display.show(Image.NO)

---

2.2. Defs for repeated code patterns

The code below uses a definition for the sender.

The pattern for A and B-button pressing is the same.

Both send text: “A” or “B”.

Both display an image: Image.YES or Image.NO.

sender(text, image) can be used to reproduce the pattern for both button presses.

from microbit import *
import radio

# Turn on the radio
radio.on()
# Choose own group in pairs 0-255
radio.config(group=8)


def sender(text, image):
    radio.send(text)
    display.show(image)


while True:
    # sender
    if button_a.was_pressed():
        sender("Y", Image.YES)
    elif button_b.was_pressed():
        sender("N", Image.NO)
    # receiver
    incoming_message = radio.receive()
    if incoming_message:
        if incoming_message == "Y":
            display.scroll("Y", delay=80)
            display.show(Image.YES)
        elif incoming_message == "N":
            display.scroll("N", delay=80)
            display.show(Image.NO)

---

Tasks

1. Modify the code to add a receiving definition.

Q1

Modify the code to add a receiving definition.

from microbit import *
import radio

# Turn on the radio
radio.on()
# Choose own group in pairs 0-255
radio.config(group=8)

def sender(text, image):
    radio.send(text)
    display.show(image)

def receiver(text, image):
    display.scroll("Y", delay=80)
    display.show(image)

while True:
    # sender
    if button_a.was_pressed():
        sender("Y", Image.YES)
    elif button_b.was_pressed():
        sender("N", Image.NO)
    # receiver
    incoming_message = radio.receive()
    if incoming_message:
        if incoming_message == "Y":
            receiver("Y", Image.YES)
        elif incoming_message == "N":
            receiver("N", Image.NO)