查看“陈佳怡-2020013369-2021A-M08-91-WW8”的源代码

==智能硬件控制实验==
===RGB LED灯实验===
*实验原理
:使用PWM（脉冲宽度调制）技术来控制RGB LED灯的亮度
（PWM技术是指通过数字信号的方式来控制模拟输出的技术，主要用于控制直流电机的速度、舵机的角度等）
*实验效果
:运行后RGB LED灯以程序设定的频率、亮度和颜色闪烁
*实现代码(Python)

  import RPi.GPIO as GPIO
  import time
  colors=[0xFF0000,0x00FF00,0x0000FF,0xFFFF00,0xFF00FF,0x00FFFF]
  makerobo_R=11
  makerobo_G=12
  makerobo_B=13
  def makerobo_setup(Rpin,Gpin,Bpin):
    global pins
    global p_R,p_G,p_B
    pins={'pin_R':Rpin,'pin_G':Gpin,'pin_B':Bpin}
    GPIO.setmode(GPIO.BOARD)
    GPIO.setwarnings(False)
    for i in pins:
        GPIO.setup(pins[i],GPIO.OUT)
        GPIO.output(pins[i],GPIO.LOW)
    p_R = GPIO.PWM(pins['pin_R'], 2000)
    p_G = GPIO.PWM(pins['pin_G'], 1999)
    p_B = GPIO.PWM(pins['pin_B'], 5000)
    p_R.start(0)
    p_G.start(0)
    p_B.start(0)
  def makerobo_pwm_map(x, in_min, in_max, out_min, out_max):
    return (x-in_min)*(out_max - out_min)/(in_max - in_min) + out_min
  def makerobo_off():
    GPIO.setmode(GPIO.BOARD)
    for i in pins:
        GPIO.setup(pins[i], GPIO.OUT)
        GPIO.output(pins[i], GPIO.LOW)
  def makerobo_set_Color(col):
    R_val = (col & 0xff0000)>>16
    G_val = (col & 0x00ff00)>>8
    B_val = (col & 0x0000ff)>>0
    R_val = makerobo_pwm_map(R_val, 0, 255, 0, 100)
    G_val = makerobo_pwm_map(G_val, 0, 255, 0, 100)
    B_val = makerobo_pwm_map(B_val, 0, 255, 0, 100)           
    p_R.ChangeDutyCycle(100-R_val)
    p_G.ChangeDutyCycle(100-G_val)  
    p_B.ChangeDutyCycle(100-B_val)                 
  def makerobo_loop():
    while True:
        for col in colors:
            makerobo_set_Color(col)
            time.sleep(0.1)
  def makerobo_destroy():
    p_R.stop()
    p_G.stop()
    p_B.stop()
    makerobo_off()
    GPIO.cleanup()
  if __name__=="__main__":
   try:
      makerobo_setup(makerobo_R, makerobo_G,makerobo_B)
      makerobo_loop()
   except KeyboardInterrupt:
     makerobo_destroy() 

===轻触按键实验===
*实验原理
:轻触按键模块内部有一个轻触拨盘，当按下轻触按键的时候输出低电平，当松开轻触按键的时候保持高电平，通过LED的颜色判断轻触按键的工作状态
*实验效果
:轻触按键模块后LED灯闪亮
*实现代码(Python)

  import RPi.GPIO as GPIO
  makerobo_BtnPin=11
  makerobo_Rpin=12
  makerobo_Gpin=13
  def makerobo_setup():
    GPIO.setmode(GPIO.BOARD)
    GPIO.setwarnings(False)
    GPIO.setup(makerobo_Rpin,GPIO.OUT)
    GPIO.setup(makerobo_Gpin,GPIO.OUT)
    GPIO.setup(makerobo_BtnPin,GPIO.IN,pull_up_down=GPIO.PUD_UP)
    GPIO.add_event_detect(makerobo_BtnPin,GPIO.BOTH,callback=makerobo_detect,bouncetime=200)
  def double_colorLED(x):
    if x==0:
        GPIO.output(makerobo_Rpin,1)
        GPIO.output(makerobo_Gpin,0)
    if x==1:
        GPIO.output(makerobo_Rpin,0)
        GPIO.output(makerobo_Gpin,1)
  def makerobo_Print(x):
    if x==0:
        print('HELLO WORLD')
  def makerobo_detect(chn):
    double_colorLED(GPIO.input(makerobo_BtnPin))
    makerobo_Print(GPIO.input(makerobo_BtnPin))                 
  def makerobo_loop():
    while True:
        pass
  def makerobo_destroy():
    GPIO.output(makerobo_Gpin,GPIO.LOW)
    GPIO.output(makerobo_Rpin,GPIO.LOW)
    GPIO.cleanup()
  if __name__=="__main__":
   makerobo_setup()
   try:
      makerobo_loop()
   except KeyboardInterrupt:
      makerobo_destroy()

==语音识别LED灯控制==
*实验原理
:利用www.smartpi.cn生成语音SDK，并烧录在语音识别模块中，连接树莓派与语音识别模块，在树莓派上可通过输出端口连接其他模块
*实验效果
:通过语音识别开关灯或进行其他模块的控制
*树莓派代码（仅语音识别模块）

  import RPi.GPIO as GPIO
  import time
  GPIO.setmode(GPIO.BCM)
  GPIO.setup(25,GPIO.IN)
  GPIO.setup(26,GPIO.IN)
  GPIO.setup(5,GPIO.OUT)
  GPIO.setup(6,GPIO.OUT)
  while True:
    input1=GPIO.input(25)
    input2=GPIO.input(26)
    if(input1==True):
        GPIO.output(5,GPIO.HIGH)
    else:
        GPIO.output(5,GPIO.LOW)
    if(input2==True):
        GPIO.output(6,GPIO.HIGH)
    else:
        GPIO.output(6,GPIO.LOW)