Hi Ishan,
To use the pin change interrupts in Arduino, use the “External Interrupt block”. This block configures Simulink® to treat the downstream Function-Call Subsystem, connected to the output port of the block, as an Interrupt Service Routine (ISR). ISR is a section of code that the CPU triggers when the selected interrupt occurs at the selected pin of the hardware.
To know in detail about the “External Interrupt block” refer to this documentation: Trigger the downstream function-call subsystem from an Interrupt Service Routine - Simulink - MathWorks India
To know in detail about the connections of “Arduino board” and “External Interrupt block” refer to this example: Trigger Downstream Function-Call Subsystem Using Arduino External Interrupt Block - MATLAB & Simulink Example - MathWorks India
Hope this helps!
