FAQ answer

What performance can be expected?

The simple answer is that you will get the same performance as if you only used ATMEL's® direct register manipulation acronyms in your program. In other words, the majority of the Ddr-ArdMeg functions will be compiled into a small number of inlined assembler instructions, in many cases 1 or 2. The added benefit of Ddr-ArdMeg is that the source code will be more readable and that it has a higher level of type safety. The two statements below are from a functional point of view (almost) equivalent. They both compile into a cbi-instruction but readability and type safety differs.

// Using ATMEL's® acronyms

DDRD &= ~(1<<PD2);

// Using Ddr-ArdMeg

setModeInput(PIN_DIO_19);

Back to FAQ