matrix_skel.h

   1 #ifndef MATRIX_SKEL_H
   2 #define MATRIX_SKEL_H 1
   3
   4 #include <stdbool.h>
   5
   6 /* number of matrix rows */
   7 int  matrix_rows(void);
   8 /* number of matrix columns */
   9 int  matrix_cols(void);
  10 /* intialize matrix for scaning. should be called once. */
  11 void matrix_init(void);
  12 /* scan all key states on matrix */
  13 int  matrix_scan(void);
  14 /* whether modified from previous scan. used after matrix_scan. */
  15 bool matrix_is_modified(void);
  16 /* whether ghosting occur on matrix. */
  17 bool matrix_has_ghost(void);
  18 /* whether a swtich is on */
  19 bool matrix_is_on(int row, int col);
  20 /* matrix state on row */
  21 uint16_t matrix_get_row(int row);
  22 /* count keys pressed */
  23 int matrix_key_count(void);
  24 /* print matrix for debug */
  25 void matrix_print(void);
  26
  27
  28 #endif