How to do it...

To do this, perform the following steps:

1. Run the following lines of code in the REPL:

>>> from adafruit_circuitplayground.express import cpx
>>> cpx.red_led = True

1. You should see the pin 13 LED turn red at this stage.
2. Check the current state of the LED using the following code:

>>> cpx.red_led
True

1. To turn off the LED, run the following code in the REPL:

>>> cpx.red_led = False

1. The light of the pin 13 LED will now be switched off.