1 files changed, 32 insertions, 0 deletions

diff --git a/matrix.h b/matrix.h
new file mode 100644
index 000000000..1bcd0915f
--- /dev/null
+++ b/matrix.h
@@ -0,0 +1,32 @@
+#ifndef MATRIX_H
+#define MATRIX_H
+
+#include <stdbool.h>
+
+/* number of matrix rows */
+uint8_t matrix_rows(void);
+/* number of matrix columns */
+uint8_t matrix_cols(void);
+/* intialize matrix for scaning. should be called once. */
+void matrix_init(void);
+/* scan all key states on matrix */
+uint8_t matrix_scan(void);
+/* whether modified from previous scan. used after matrix_scan. */
+bool matrix_is_modified(void);
+/* whether ghosting occur on matrix. */
+bool matrix_has_ghost(void);
+/* whether a swtich is on */
+bool matrix_is_on(uint8_t row, uint8_t col);
+/* matrix state on row */
+#if (MATRIX_COLS <= 8)
+uint8_t matrix_get_row(uint8_t row);
+#else
+uint16_t matrix_get_row(uint8_t row);
+#endif
+/* count keys pressed */
+uint8_t matrix_key_count(void);
+/* print matrix for debug */
+void matrix_print(void);
+
+
+#endif