How can I access I2C on my Raspberry Pi A+?

Hi. I have succesfully established a wireless connection between Matlab R2014b and my Raspberry Pi A+ via wifi. I can build and run Simulink models on the Pi and read/write GPIOs.

However, when I establish a connection in Matlab using the following line, there are no available I2C busses. Also, it is recognized as a Model B Rev 1.

mypi = raspi('192.168.1.31')

mypi = 

    raspi with properties:

             DeviceAddress: '192.168.1.31'
                      Port: 18725
                 BoardName: 'Raspberry Pi Model B Rev 1'
             AvailableLEDs: {'led0'}
      AvailableDigitalPins: [0 1 4 7 8 9 10 11 14 15 17 18 21 22 23 24 25]
      AvailableSPIChannels: {}
         AvailableI2CBuses: {}
               I2CBusSpeed: []

    Supported peripherals

When I manually check for I2C busses in the RPi's console, it finds 3 addresses (0x1e, 0x68 and 0x77).

pi@raspberrypi ~ $ sudo i2cdetect -y 1

I'm using Matlab R2014b with Raspberry Pi Support Package 14.2.0 (for both Matlab and Simulink).

Any clue how I can access the I2C bus in Matlab? Thanks!

Answer 1

[Madhu Govindarajan]

Have you tried using enablei2c - http://www.mathworks.com/help/supportpkg/raspberrypiio/ref/enablei2c.html

[Jasper]

Hi Madhu, Thank you very much for your response. I'm abroad for a while, so I won't be able to see if it works just now. Will let you know when I can try it. Thanks!