我是面向对象编程的新手。我正在使用Raspberry pi,我正在构建许多具有不同GPIO引脚的类。我不知道如何构建setup和pwm命令。所有这些都应该不在课程中,还是应该将它们放在每个课程的init函数中?如何在init函数中更改OOP?你能告诉我这个代码的例子吗?
GPIO.setup(33, GPIO.OUT)
pwmservo=GPIO.PWM(33,50)
pwmservo.start(6)
class zmove(object):
def __init__(self):
pass
def update(self,angle):
duty=float(angle)/10.0+2.5
pwmservo.ChangeDutyCycle(duty)
time.sleep(0.3)
问题:一个类的init函数中的gpio setup和pwm命令?
class PWMServo:
"""
Base class doing setup and get PWM instance
"""
def __init__(self, pin):
GPIO.setup(pin, GPIO.OUT)
self.pwm = GPIO.PWM(pin, 50)
self.pwm.start(6)
def change_duty_cycle(self, duty):
self.pwm.ChangeDutyCycle(duty)
time.sleep(0.3)
class ZMove(PWMServo):
"""
Inherit from class PWMServo
ZMove use PIN 33
"""
def __init__(self):
super().__init__(pin=33)
self.pwm.start(6)
def update(self,angle):
duty=float(angle)/10.0+2.5
self.change_duty_cycle(duty)
if __name__ == '__main__':
zmove = ZMove()
zmove.update(45.0)
# Or, call direct
zmove.change_duty_cycle(45.0/10.0+2.5)