The Linux image that Simulink uses is nothing but the Raspbian Wheezy image that the foundation provides plus some required Linux packages to ensure compatibility with the Simulink. For example, ALSA Audio Capture block requires ALSA development libraries and these are pre-installed in the Raspian Wheezy image that comes with Simulink. Look at my post in "http://www.mathworks.com/matlabcentral/ ... i-hardware
" for details of what additional Debian/Linux packages are installed on top of the standard Raspbian Wheezy image shipped by the foundation.
The latest release of the Raspbian Wheezy image has V4L2 drivers for the Camera Board. This means that you can use V4L2 Video Capture block to capture images from the Raspberry Pi Camera Board. To enable this, first upgrade your Raspbian:
sudo apt-get update
sudo apt-get dist-upgrade
After reboot, execute the following command to load the V4L2 driver for the Raspberry Pi Camera:
sudo modprobe bcm2835-v4l2
After this step, you should see a /dev/video0 device (check by "ls -al /dev/vid*") that corresponds to the Camera Board. Now use the V4L2 Video Capture Block to capture images from this video device.