@Phillip - Mac support for this arduino support from simulink was added in R2013b... you can use this entry to initiate installation, but you will need 13b for Mac support.
I'm using 2012a for Mac OS x on 10.8 and when I type
targetinstaller, it pulls up the Target Installer window, but then when I select Internet as the option, I get:
"Select a Target
does not contain a valid support package. Please specify a folder that contains a valid support package and try again."
If I download the submission into my downloads folder and use the 'Folder' option and point it to the folder 'rtt_arduinomega2560_r2012a_v1_0' it also complains and says it is not a valid package.
Did anyone knows how big Arduino Mega could support the downloaded simulink program? I hv a quite big simulink program with stateflows and s-function builder blocks. I'm currently want to switch and implementing my model to the hardware. What I understand, the Arduino Simulink block for Arduino Mega is a Target block type NOT like Arduino IO package previously created and suited for Arduino UNO. I also would to know if you guys have experiences on editing Arduino IO package for Arduino Mega used. The Arduino IO package seems saving a lot of memory since the concept is creating virtual port pins of Arduino in SIMULINK blocks NOT downloading the SIMULINK program blocks into the Arduino such as Target block for Arduino Mega version. Please correct me if I mistaken.
Thank you in advance.