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pfio.digital_write(0,1)
pfio.digital_write(0,1)
</syntaxhighlight>
</syntaxhighlight>
=== Clignoter une LED ====
A program to flash an LED must repeatedly turn an output on, wait for a period and then turn it off again. It is shown below:
<syntaxhighlight lang="python">
from time import sleep
import piface.pfio as pfio
pfio.init()
while(True):
pfio.digital_write(0,1) #turn on
sleep(1)
pfio.digital_write(0,0) #turn off
sleep(1)
</syntaxhighlight>
=== Lire une entrée ===
To read the state of an input use the {{fname|pfio.digital_read(pin)}} function. If a button is pressed the function returns a ''1'', otherwise it returns a ''0''.
Start a new Python interpreter and type the following:
<syntaxhighlight lang="python">
import piface.pfio as pfio
pfio.init()
pfio.digital_read(0)
</syntaxhighlight>
Python prints ''0''.
Hold down the first switch, labelled ''S0'', and type {{fname|pfio.digital_read(0)}} again.
Python prints ''1''.
{{PiFace2-Manuel-TRAILER}}
{{PiFace2-Manuel-TRAILER}}