我已经绑定了一个函数调用Kivy按钮,它构建并启动两个线程。我正在使用Kivy标签来显示我确实正在输入函数'my_function()'并结束。看来这些线程没有正确构建。Python函数在函数调用时没有正确执行(Kivy)
这两个线程的每一个都旨在转动步进电机。我测试了这些电机并且它们工作正常,但是当我尝试将代码放入一个函数并在变量上应用'self'时,除了最后的标签更新之外,按下按钮时不会发生任何事情。
的Python:
import kivy
kivy.require('1.9.1')
from kivy.app import App
from kivy.uix.screenmanager import Screenmanager, Screen
from kivy.properties import StringProperty
from Adafruit_MotorHAT import Adafruit_MotorHAT, Adafruit_DCMotor, Adafruit_StepperMotor
import threading
import random
import time
import atexit
class ScreenManager(ScreenManager):
pass
class StartMenu(Screen):
pass
这是尝试和真实代码:
class MyScreen(Screen):
entered = StringProperty("Not Entered")
# create a default object, no changes to I2C address or frequency
mh = Adafruit_MotorHAT()
# create empty threads (these will hold the stepper 1 and 2 threads)
st1 = Threading.thread()
st2 = Threading.thread()
# recommended for auto-disabling motors on shutdown!
def turnOffMotors(mh):
mh.getMotor(1).run(Adafruit_MotorHAT.RELEASE)
mh.getMotor(2).run(Adafruit_MotorHAT.RELEASE)
mh.getMotor(3).run(Adafruit_MotorHAT.RELEASE)
mh.getMotor(4).run(Adafruit_MotorHAT.RELEASE)
atexit.register(turnOffMotors(mh))
myStepper1 = mh.getStepper(200, 1) # 200 steps/rev, motor port #1
myStepper2 = mh.getStepper(200, 2) # 200 steps/rev, motor port #1
myStepper1.setSpeed(60) # 30 RPM
myStepper2.setSpeed(60) # 30 RPM
stepstyles = [Adafruit_MotorHAT.SINGLE, Adafruit_MotorHAT.DOUBLE, Adafruit_MotorHAT.INTERLEAVE, Adafruit_MotorHAT.MICROSTEP]
def stepper_worker(stepper, numsteps, direction, style):
stepper.step(numsteps, direction, style)
配售在创建my_function代码()和施加 '自我';线程不再工作。为第二个线程重复代码。我想强调的是,这个代码工作时内部没有一个功能,而不是用“自我”:
def my_function(self, *args):
if (True):
time.sleep(0.005)
if not self.st1.isAlive():
randomdir = random.randint(0, 1)
if (randomdir == 0):
dir = Adafruit_MotorHAT.FORWARD
else:
dir = Adafruit_MotorHAT.BACKWARD
randomsteps = random.randint(10,50)
self.st1 = threading.Thread(target=self.stepper_worker, args=(self.myStepper1, randomsteps, dir, self.stepstyles[random.randint(0,3)],))
self.st1.start()
self.entered = "Entered"
体形:
class MyApp(App):
def build(self):
return ScreenManager()
if __name__ == "__main__":
MyApp().run()
Kivy:my.kv
我留下了一些不必要的详细信息,如布局和小部件大小。
#:kivy 1.9.1
<ScreenManager>:
StartMenu:
MyScreen:
<StartMenu>:
name: 'StartMenu'
Button:
on_release:
root.manager.current = 'MyScreen'
<MyScreen>:
name: 'MyScreen'
Label:
text: root.entered
Button:
on_release:
root.my_function()
感谢您的时间!
在stepper_worker中添加自我作为第一个参数固定它!谢谢。 – Finksterr