我想使用GUI中的按钮或按下GPIO来启动timer / count_up_down。 因此，如果按下GPIO20，则意味着与按下GUI中的开始按钮相同。 有谁知道我必须对GPIO进行检查的地方。我尝试了几件事，但没有任何效果。
import time
from Tkinter import *
from luma.led_matrix.device import max7219
from luma.core.interface.serial import spi, noop
from luma.core.virtual import viewport, sevensegment
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BOARD)
GPIO.setup(40, GPIO.IN)
GPIO.setup(38, GPIO.IN)
class ClockCount(Frame):
def __init__(self, parent=None, **kw):
Frame.__init__(self, parent, kw)
serial = spi(port=0, device=0, gpio=noop())
device = max7219(serial, cascaded=1)
global seg
seg = sevensegment(device)
self._start = 0.0
self._elapsedtime = 0.0
self._running = 0
self.counterh = 0
self.countera = 0
self.segh = "00"
self.sega = "00"
self.segt = "00"
self.timestr = StringVar()
self.ch = StringVar()
self.ca = StringVar()
self._check_gpio()
self._update_counter()
#if GPIO.input(40) == TRUE : print "test"
def _update_counter(self):
seg.text = str(self.segt)+str(self.segh)+str(self.sega)
self.ch.set(str(self.counterh))
self.ca.set(str(self.countera))
def _check_gpio(self):
if GPIO.input(40) == TRUE : print "test"
if GPIO.input(40) == TRUE : self.Stop()
def _update(self):
""" Update the label with elapsed time. """
self._elapsedtime = time.time() - self._start
self._setTime(self._elapsedtime)
self._timer = self.after(50, self._update)
seg.text = str(self.segt)+str(self.segh)+str(self.sega)
if GPIO.input(40) == TRUE : print "test"
if GPIO.input(40) == TRUE : self.Stop()
if GPIO.input(38) == TRUE : self.Start()
def _setTime(self, elap):
""" Set the time string to Minutes:Seconds:Hundreths """
minutes = int(elap/60)
seconds = int(elap - minutes*60.0)
hseconds = int((elap - minutes*60.0 - seconds)*100)
self.timestr.set('%02d:%02d' % (minutes, seconds))
if len(str(minutes)) < 2 : self.segt = "0" + str(minutes)
else: self.segt = str(minutes)
def Start(self):
""" Start the stopwatch, ignore if running. """
if not self._running:
self._start = time.time() - self._elapsedtime
self._update()
self._running = 1
def Stop(self):
""" Stop the stopwatch, ignore if stopped. """
if self._running:
self.after_cancel(self._timer)
self._elapsedtime = time.time() - self._start
self._setTime(self._elapsedtime)
self._running = 0
def Halbzeit(self):
""" Stop the stopwatch, ignore if stopped. """
if not self._running:
self._start = time.time()
self._elapsedtime = 2700.00
self._setTime(self._elapsedtime)
def Reset(self):
""" Reset the stopwatch. """
if not self._running:
self._start = time.time()
self._elapsedtime = 0.0
self._setTime(self._elapsedtime)
def counth_up(self):
self.counterh += 1
if self.counterh > 99 : self.counterh = 0
if len(str(self.counterh)) < 2 : self.segh = "0" + str(self.counterh)
else: self.segh = str(self.counterh)
self._update_counter()
def counth_down(self):
self.counterh -= 1
if self.counterh < 0 : self.counterh = 0
if len(str(self.counterh)) < 2 : self.segh = "0" + str(self.counterh)
else: self.segh = str(self.counterh)
self._update_counter()
def counta_up(self):
self.countera += 1
if self.countera > 99 : self.countera = 0
if len(str(self.countera)) < 2 : self.sega = "0" + str(self.countera)
else: self.sega = str(self.countera)
self._update_counter()
def counta_down(self):
self.countera -= 1
if self.countera < 0 : self.countera = 0
if len(str(self.countera)) < 2 : self.sega = "0" + str(self.countera)
else: self.sega = str(self.countera)
self._update_counter()
def main():
root = Tk()
w, h = root.winfo_screenwidth(), root.winfo_screenheight()
"""root.geometry("%dx%d+0+0" % (w, h))"""
root.geometry('1000x1000')
clockcount = ClockCount(root)
Button(root, font=('Arial',30), width=7, text='Start', command=clockcount.Start).place(x=120, y=200)
Button(root, font=('Arial',30), width=7, text='Stop', command=clockcount.Stop).place(x=350, y=200)
Button(root, font=('Arial',30), width=7, text='Halbzeit', command=clockcount.Halbzeit).place(x=580, y=200)
Button(root, font=('Arial',30), width=7, text='Reset', command=clockcount.Reset).place(x=810, y=200)
Button(root, font=('Arial',30), width=7, text='Heim +', command=clockcount.counth_up).place(x=250, y=520)
Button(root, font=('Arial',30), width=7, text='Heim -', command=clockcount.counth_down).place(x=250, y=600)
Button(root, font=('Arial',30), width=7, text='Gast +', command=clockcount.counta_up).place(x=550, y=520)
Button(root, font=('Arial',30), width=7, text='Gast -', command=clockcount.counta_down).place(x=550, y=600)
Button(root, font=('Arial',30), width=7, text='Quit', command=root.destroy).place(x=10, y=10)
clock_label = Label(root, font="Arial 100 bold", fg="RED", textvariable=clockcount.timestr).place(x=400, y=20)
counterhome_label = Label(root, font="Arial 100 bold", fg="RED", textvariable=clockcount.ch).place(x=320, y=350)
counteraway_label = Label(root, font="Arial 100 bold", fg="RED", textvariable=clockcount.ca).place(x=620, y=350)
#if GPIO.input(40) == TRUE : clockcount.Start()
#if GPIO.input(40) == TRUE : print "test"
root.mainloop()
if __name__ == '__main__':
main()
非常感谢， br 罗伯特