| #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)) |