buzzer_on = True
btn20.irq(btn20_isr, trigger=Pin.IRQ_FALLING)
btn21.irq(btn21_isr, trigger=Pin.IRQ_FALLING | Pin.IRQ_RISING)
%serialconnect
from machine import Pin
import time
class Button(object):
def __init__(self, gpio):
self.btn = Pin(gpio, Pin.IN)
# set up IRQ
self.btn.irq(self.isr, trigger=Pin.IRQ_FALLING)
# flag and data
self.pressed = False
self.time_pressed = time.ticks_ms()
def isr(self, t):
self.pressed = True
self.time_pressed = time.ticks_ms()
btn = Button(20)
start = time.ticks_ms()
for k in range(10):
if btn.pressed:
print(btn.time_pressed - start)
btn.pressed = False
time.sleep(1)
