1 files changed, 72 insertions, 0 deletions
diff --git a/common/keyboard.h b/common/keyboard.h
new file mode 100644
index 000000000..6442716fc
--- /dev/null
+++ b/common/keyboard.h
@@ -0,0 +1,72 @@
+/*
+Copyright 2011,2012,2013 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef KEYBOARD_H
+#define KEYBOARD_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* key matrix position */
+typedef struct {
+    uint8_t col;
+    uint8_t row;
+} keypos_t;
+
+/* key event */
+typedef struct {
+    keypos_t key;
+    bool     pressed;
+    uint16_t time;
+} keyevent_t;
+
+/* equivalent test of keypos_t */
+#define KEYEQ(keya, keyb)       ((keya).row == (keyb).row && (keya).col == (keyb).col)
+
+/* Rules for No Event:
+ * 1) (time == 0) to handle (keyevent_t){} as empty event
+ * 2) Matrix(255, 255) to make TICK event available
+ */
+static inline bool IS_NOEVENT(keyevent_t event) { return event.time == 0 || (event.key.row == 255 && event.key.col == 255); }
+static inline bool IS_PRESSED(keyevent_t event) { return (!IS_NOEVENT(event) && event.pressed); }
+static inline bool IS_RELEASED(keyevent_t event) { return (!IS_NOEVENT(event) && !event.pressed); }
+
+/* Tick event */
+#define TICK                    (keyevent_t){           \
+    .key = (keypos_t){ .row = 255, .col = 255 },           \
+    .pressed = false,                                   \
+    .time = (timer_read() | 1)                          \
+}
+
+
+void keyboard_init(void);
+void keyboard_task(void);
+void keyboard_set_leds(uint8_t leds);
+
+__attribute__ ((weak)) void matrix_power_up(void) {}
+__attribute__ ((weak)) void matrix_power_down(void) {}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif