7 segment 4 Bits Digital Tube LED Display control in Matlab with arduino

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Ashish Sahu 2019-11-9

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/490179-7-segment-4-bits-digital-tube-led-display-control-in-matlab-with-arduino

I am not able to display anything on my 7 segment 4 Bits Digital Tube LED Display which is an I2C device.

I am working with the code given below-

a=arduino('com4','Uno','Libraries','I2C')
a = 
  arduino with properties:
                  Port: 'COM4'
                 Board: 'Uno'
         AvailablePins: {'D2-D13', 'A0-A5'}
  AvailableDigitalPins: {'D2-D13', 'A0-A5'}
      AvailablePWMPins: {'D3', 'D5-D6', 'D9-D11'}
   AvailableAnalogPins: {'A0-A5'}
    AvailableI2CBusIDs: [0]
             Libraries: {'I2C'}
scanI2CBus(a)
ans =
  112×1 cell array
    {'0x08'}
    {'0x09'}
    {'0x0A'}
    {'0x0B'}
    {'0x0C'}
    {'0x0D'}
    {'0x0E'}
    {'0x0F'}
    {'0x10'}
    {'0x11'}
    {'0x12'}
    {'0x13'}
    {'0x14'}
    {'0x15'}
    {'0x16'}
    {'0x17'}
    {'0x18'}
    {'0x19'}
    {'0x1A'}
    {'0x1B'}
    {'0x1C'}
    {'0x1D'}
    {'0x1E'}
    {'0x1F'}
    {'0x20'}
    {'0x21'}
    {'0x22'}
    {'0x23'}
    {'0x24'}
    {'0x25'}
    {'0x26'}
    {'0x27'}
    {'0x28'}
    {'0x29'}
    {'0x2A'}
    {'0x2B'}
    {'0x2C'}
    {'0x2D'}
    {'0x2E'}
    {'0x2F'}
    {'0x30'}
    {'0x31'}
    {'0x32'}
    {'0x33'}
    {'0x34'}
    {'0x35'}
    {'0x36'}
    {'0x37'}
    {'0x38'}
    {'0x39'}
    {'0x3A'}
    {'0x3B'}
    {'0x3C'}
    {'0x3D'}
    {'0x3E'}
    {'0x3F'}
    {'0x40'}
    {'0x41'}
    {'0x42'}
    {'0x43'}
    {'0x44'}
    {'0x45'}
    {'0x46'}
    {'0x47'}
    {'0x48'}
    {'0x49'}
    {'0x4A'}
    {'0x4B'}
    {'0x4C'}
    {'0x4D'}
    {'0x4E'}
    {'0x4F'}
    {'0x50'}
    {'0x51'}
    {'0x52'}
    {'0x53'}
    {'0x54'}
    {'0x55'}
    {'0x56'}
    {'0x57'}
    {'0x58'}
    {'0x59'}
    {'0x5A'}
    {'0x5B'}
    {'0x5C'}
    {'0x5D'}
    {'0x5E'}
    {'0x5F'}
    {'0x60'}
    {'0x61'}
    {'0x62'}
    {'0x63'}
    {'0x64'}
    {'0x65'}
    {'0x66'}
    {'0x67'}
    {'0x68'}
    {'0x69'}
    {'0x6A'}
    {'0x6B'}
    {'0x6C'}
    {'0x6D'}
    {'0x6E'}
    {'0x6F'}
    {'0x70'}
    {'0x71'}
    {'0x72'}
    {'0x73'}
    {'0x74'}
    {'0x75'}
    {'0x76'}
    {'0x77'}
>> d = device(a, 'I2CAddress','0x77')
d = 
  device with properties:
             Interface: 'I2C'
            I2CAddress: 119 ('0x77')
                   Bus: 0
                SCLPin: 'A5'
                SDAPin: 'A4'
               BitRate: 100000 (bits/s)
               
write(d,7)
             