SunFounder Thales Kit, Manual

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SunFounder Thales Kit for Raspberry Pi Pico, Release 1.0
•
utime.ticks_diff()
is used to output the time difference between two time nodes. The two time nodes
in this function are
utime.ticks_ms()
, the current program time (press the button) and the reference time
(light off) stored in the variable timer_light_off .
These two functions are usually used together to calculate the execution time of the program. Here we use it to
calculate the time from when the light turns off to when the button is pressed.
Finally, this time will be printed out.
print ( "Your reaction time was " + str (rection_time) + " milliseconds!" )
Also see the reference here:
• machine.Pin
• urandom
• utime
What more?
Playing with your friends will be more fun, why not add buttons and see who can press the buttons the fastest?
Please try it.
import machine
import utime
import urandom
led = machine . Pin( 15 , machine . Pin . OUT)
left_button = machine . Pin( 14 , machine . Pin . IN)
right_button = machine . Pin( 16 , machine . Pin . IN)
def button_press (pin):
left_button . irq(handler = None )
right_button . irq(handler = None )
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3.4. Projects 63