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→Code
<syntaxhighlight lang="python" line>
<syntaxhighlight lang="python" line>
import micropython, time
from random import randint
from machine import Pin
micropython.alloc_emergency_exception_buf(100)
counter = 0
def bouton_cb( obj ):
global counter
counter += 1
# https://docs.micropython.org/en/latest/library/machine.Pin.html
# https://docs.micropython.org/en/latest/reference/isr_rules.html
btn = Pin( Pin.board.GP10, Pin.IN, Pin.PULL_UP )
btn.irq( handler=bouton_cb, trigger=Pin.IRQ_FALLING )
LEDs = [ Pin(Pin.board.GP27, Pin.OUT), Pin(Pin.board.GP26, Pin.OUT),
Pin(Pin.board.GP22, Pin.OUT) ]
for led in LEDs:
led.value(0)
old_value = 0
while True:
if counter>0: # Button pressed?
# Random number
new_value = randint(1,6)
while new_value == old_value:
new_value = randint(1,6)
# show the number
old_value = new_value
print( 'Random = %i = %s' % (new_value,bin(new_value)) )
# Show the LED value
s = bin(new_value).replace( '0b','' )
s = '%3s' % s
s = s.replace(' ', '0')
# print( bin(new_value), '->', s )
for i in range(3): # 0..2
LEDs[i].value( int(s[i]) )
time.sleep_ms( 500 )
# Reset button detection
counter=0
else:
time.sleep_ms(200)
</syntaxhighlight>
</syntaxhighlight>