How can I programmatically configure "Packet Output" and "Packet Input" blocks from the SLDRT toolbox?

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Charles Refvem
Charles Refvem 2020-2-17
I have created a custom Simulink library with blocks that interface with external hardware via USB serial using the "Packet Output" and "Packet Input" blocks from the SLDRT toolbox.
I would like to set the COM port and baudrate on model startup using a callback that will query the available serial ports and configure the packet blocks appropriately.
I have investigated usage of the find_system and set_param functions but I cannot figure out how to acess the properties representing COM port and baudrate.
Any help or guidance would be greatly appreciated.

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