差别

这里会显示出您选择的修订版和当前版本之间的差别。

到此差别页面的链接

后一修订版 		前一修订版
mp_joystick [2021/11/19 19:26]
gongyusu 创建 		mp_joystick [2022/01/27 07:09] (当前版本)
gongyusu
行 1: 行 1:
-## 游戏杆控制+## 游戏摇杆的MicroPython参考代码
   * 参考文章：[[https://​www.tomshardware.com/​how-to/​raspberry-pi-pico-joystick|How to Connect an Analog Joystick to Raspberry Pi Pico]]   * 参考文章：[[https://​www.tomshardware.com/​how-to/​raspberry-pi-pico-joystick|How to Connect an Analog Joystick to Raspberry Pi Pico]]
  
-{{:​mpjoystick.png|}}+{{ :​mpjoystick.png |连接示意图}} <WRAP centeralign>​连接示意图 </​WRAP>​ 
 <code python> <code python>
 from machine import Pin, ADC from machine import Pin, ADC
行 33: 行 34:
 </​code>​ </​code>​
  
 +另外一段在ESP32上的代码,​ 针对Pico需要做管脚的调整：
 +来自：[[https://​github.com/​GuyCarver/​MicroPython/​blob/​master/​esp32/​joystick.py|MicroPython/​esp32/​joystick.py ]]
 +<code python>
 +import machine
 +
 +#NOTE: For button, Pin 34 didn't work, but pin 32 did.  Don't know what the difference is but not all pins work.
 +
 +class joystick(object) :
 +  _x_center = 1789.0
 +  _y_center = 1817.0
 +  _pos_x = 4095.0 - _x_center
 +  _pos_y = 4095.0 - _y_center
 +
 +  def __init__( self, aX, aY, aButton ) :
 +    self._jx = machine.ADC(machine.Pin(aX))
 +    self._jy = machine.ADC(machine.Pin(aY))
 +    self._jx.width(machine.ADC.WIDTH_12BIT)
 +    self._jy.width(machine.ADC.WIDTH_12BIT)
 +    self._jx.atten(machine.ADC.ATTN_11DB)
 +    self._jy.atten(machine.ADC.ATTN_11DB)
 +    #Must be pull up.  Pull down doesn'​t register change.
 +    self._js = machine.Pin(aButton,​ machine.Pin.IN,​ machine.Pin.PULL_UP)
 +
 +    self._x = 0.0
 +    self._y = 0.0
 +    self._button = False
 +
 +    self._index = 0
 +    self._xA = [0, 0, 0]
 +    self._yA = [0, 0, 0]
 +
 +  @property
 +  def x( self ) :
 +    '''​Return value from -1.0 to 1.0.'''​
 +    return self._x
 +
 +  @property
 +  def y( self ) :
 +    '''​Return value from -1.0 to 1.0.'''​
 +    return self._y
 +
 +  @property
 +  def button( self ) :
 +    '''​return True or False.'''​
 +    return self._button
 +
 +  def update( self ) :
 +    self._xA[self._index] = self._jx.read()
 +    self._yA[self._index] = self._jy.read()
 +
 +    self._index += 1
 +    if self._index >= 3 :
 +      self._index = 0
 +
 +    rx = float(sum(self._xA)) / 3.0 - joystick._x_center
 +    ry = float(sum(self._yA)) / 3.0 - joystick._y_center
 +    dx = joystick._pos_x if rx >= 0 else joystick._x_center
 +    dy = joystick._pos_y if ry >= 0 else joystick._y_center
 +    self._x = rx / dx
 +    self._y = ry / dy
 +
 +    #Value is 1 when not pressed and 0 when pressed.
 +    self._button = not self._js.value()
 +</​code>​