e3ga 创建的帖子

@kidswong999 import pyb class Stepper(): def init(self, stepnumber=200, rpms=2, power=50): self.stepnumber = stepnumber self.pin1 = pyb.Pin('P3', pyb.Pin.OUT_PP, pyb.Pin.PULL_NONE) self.pin2 = pyb.Pin('P2', pyb.Pin.OUT_PP, pyb.Pin.PULL_NONE) self.pin3 = pyb.Pin('P1', pyb.Pin.OUT_PP, pyb.Pin.PULL_NONE) self.pin4 = pyb.Pin('P0', pyb.Pin.OUT_PP, pyb.Pin.PULL_NONE) tim = pyb.Timer(4, freq=1000) self.power1 = tim.channel(1, pyb.Timer.PWM, pin=pyb.Pin("P7"), pulse_width_percent=0) self.power2 = tim.channel(2, pyb.Timer.PWM, pin=pyb.Pin("P8"), pulse_width_percent=0) self.set_speed(rpms) self.set_power(power) self.phase = self.phase_list() def set_speed(self, rpms): self.delay_time = int(1000000/(rpms*self.stepnumber)/2) def step(self, num): for i in range(num): self.pin1.high() self.pin2.high() self.pin3.high() self.pin4.high() pyb.udelay(self.delay_time) 这个改pin的值好像电机正反转没什么影响啊。可以教我怎么改步进电机旋转方向吗？