50 lines
1.2 KiB
Python
50 lines
1.2 KiB
Python
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#实验名称：二维码识别
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#版本：v1.0
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#日期：2019-12-23
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#翻译和注释：01Studio
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import sensor,lcd,time
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from machine import Timer, PWM, UART, Timer
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def Servo(angle):
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'''
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说明：舵机控制函数
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功能：180度舵机：angle:-90至90 表示相应的角度
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360连续旋转度舵机：angle:-90至90 旋转方向和速度值。
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【duty】占空比值：0-100
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'''
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#PWM通过定时器配置，接到IO17引脚
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tim_pwm = Timer(Timer.TIMER0, Timer.CHANNEL0, mode=Timer.MODE_PWM)
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S1 = PWM(tim_pwm, freq=50, duty=0, pin=17)
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S1.duty((angle+90)/180*10+2.5)
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Servo(9)
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#摄像头模块初始化
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sensor.reset()
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sensor.set_pixformat(sensor.RGB565)
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sensor.set_framesize(sensor.QVGA)
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sensor.set_vflip(1) #后置模式
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sensor.skip_frames(30)
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#lcd初始化
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lcd.init()
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clock = time.clock()
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while True:
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clock.tick()
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img = sensor.snapshot()
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res = img.find_qrcodes() #寻找二维码
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# if len(res) > 0: #在图片和终端显示二维码信息
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for i in res:
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img.draw_rectangle(i.rect())
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img.draw_string(2,2, i.payload(), color=(0,128,0), scale=2)
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print(i.payload())
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lcd.display(img)
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print(clock.fps())
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