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Accessing Arduino registers like DDRX and PINX

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Tarik Zengin
Tarik Zengin 2018-2-14
Hi everyone. Trying to access some registers like PORTX, PINX, etc. on Arduino.
A practical example why;
To set multiple digital pins at once using PORTX, or
To get multiple digital pins' values at once by reading PINX.
For instance, I have an external 8bits counter and want to get that 8 bits data all at once, not just reading 8 bits one by one and do maths to combine them.
Normally I would get this just by reading PIND register for ex. How could I do this in Matlab and/or Simulink?
Thanks

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