学习笔记
* 无序列表项RGB LED灯实验编码颜色、变化频率、亮度制造闪烁五彩灯的效果 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.setuo(pins[i], GPIO.OUT) GPIO.putput(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() * 轻触按键模块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 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() *声控台灯通过快速产品化平台http://www.smartpi.cn/#/SdkVersionList制作语音SDK，实现声控台灯。 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)