avr macros

[KIMBERLY WHITE]

 I started with avr recently. i am searching the some basic code of avr i found some macros

for example-

DDRB = _BV(PB0) | _BV(PB1);

 

what is the means of ”BV” macro here. 

[Amit Joshi]

 this macros are under the “inttypes.h” header file. this macro are used when u need to deal with single i/o pin of avr microcontrollers.

 

this macro shows PB0 and PB1 are output and rest pins are input pins

 

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