#define INPUT 0 | #define INPUT 0 | ||||
#define OUTPUT 1 | #define OUTPUT 1 | ||||
#define INPUT_PULLUP 2 | #define INPUT_PULLUP 2 | ||||
#define INPUT_PULLDOWN 3 | |||||
#define OUTPUT_OPENDRAIN 4 | |||||
#define LSBFIRST 0 | #define LSBFIRST 0 | ||||
#define MSBFIRST 1 | #define MSBFIRST 1 | ||||
#define _BV(n) (1<<(n)) | #define _BV(n) (1<<(n)) |