I am aware I can address eg. DDRB register by name, but I want to access the registers by number, essentially reading /writing directly to an I/O register (eg. port 0x04 for DDRB). I want to do this in a loop (and I want to be able to initiate it from the attached PC). How can I read or write dire…

Addressing ATmega registers by number

Grumpy_Mike April 29, 2012, 2:09pm 2

DDRB is a defined value that evaluates to 0x04.
So just use the number in place of the name.

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