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Trackball/firmware/include/pmw3360.h

pmw3360.h 612B
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  1. /*

  2.  * pmw3360.h

  3.  */

  4. 

  5. #ifndef __PMW3360_H__

  6. #define __PMW3360_H__

  7. 

  8. struct pmw_motion {

  9.     bool motion;

  10.     int32_t delta_x;

  11.     int32_t delta_y;

  12. };

  13. 

  14. int pmw_init(void);

  15. bool pmw_is_alive(void);

  16. 

  17. struct pmw_motion pmw_get(void);

  18. 

  19. /*

  20.  * 0x00: 100 cpi (minimum cpi)

  21.  * 0x01: 200 cpi

  22.  * 0x02: 300 cpi

  23.  * ...

  24.  * 0x31: 5000 cpi (default cpi)

  25.  * ...

  26.  * 0x77: 12000 cpi (maximum cpi)

  27.  */

  28. void pmw_set_sensitivity(uint8_t sens);

  29. uint8_t pmw_get_sensitivity(void);

  30. #define PMW_SENSE_TO_CPI(sense) (100 + (sense * 100))

  31. #define PMW_CPI_TO_SENSE(cpi) ((cpi / 100) - 1)

  32. 

  33. void pmw_print_status(void);

  34. 

  35. #endif // __PMW3360_H__