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-rw-r--r--common/matrix.h21
1 files changed, 16 insertions, 5 deletions
diff --git a/common/matrix.h b/common/matrix.h
index c4b2cab51..b3332d5ff 100644
--- a/common/matrix.h
+++ b/common/matrix.h
@@ -18,8 +18,23 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#ifndef MATRIX_H
#define MATRIX_H
+#include <stdint.h>
#include <stdbool.h>
+
+#if (MATRIX_COLS <= 8)
+typedef uint8_t matrix_row_t;
+#elif (MATRIX_COLS <= 16)
+typedef uint16_t matrix_row_t;
+#elif (MATRIX_COLS <= 32)
+typedef uint32_t matrix_row_t;
+#else
+#error "MATRIX_COLS: invalid value"
+#endif
+
+#define MATRIX_IS_ON(row, col) (matrix_get_row(row) && (1<<col))
+
+
/* number of matrix rows */
uint8_t matrix_rows(void);
/* number of matrix columns */
@@ -35,11 +50,7 @@ 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
+matrix_row_t matrix_get_row(uint8_t row);
/* count keys pressed */
uint8_t matrix_key_count(void);
/* print matrix for debug */