onekey: Fix for V-USB of ATtiny85 and key scan

[max/tmk_keyboard.git] / keyboard / onekey / onekey.c

diff --git a/keyboard/onekey/onekey.c b/keyboard/onekey/onekey.c
new file mode 100644 (file)
index 0000000..1595c76
--- /dev/null
+++ b/keyboard/onekey/onekey.c
@@ -0,0 +1,70 @@
+/*
+Copyright 2017 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/>.
+*/
+
+/*
+ * scan matrix
+ */
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include "debug.h"
+#include "timer.h"
+#include "matrix.h"
+
+
+#ifndef DEBOUNCE
+#   define DEBOUNCE    5
+#endif
+/* matrix state(1:on, 0:off) */
+static matrix_row_t row_debounced = 0;
+static matrix_row_t row_debouncing = 0;
+static bool debouncing = false;
+static uint16_t debouncing_time = 0;
+
+
+void matrix_init(void)
+{
+    debug_enable = true;
+    debug_matrix = true;
+    debug_mouse = true;
+
+    // PB0: Input with pull-up(DDR:0, PORT:1)
+    DDRB  &= ~(1<<0);
+    PORTB |=  (1<<0);
+}
+
+uint8_t matrix_scan(void)
+{
+    matrix_row_t r = (PINB&(1<<0) ? 0 : 1);
+    if (row_debouncing != r) {
+        row_debouncing = r;
+        debouncing = true;
+        debouncing_time = timer_read();
+    }
+
+    if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
+        row_debounced = row_debouncing;
+        debouncing = false;
+    }
+    return 1;
+}
+
+inline
+matrix_row_t matrix_get_row(uint8_t row)
+{
+    return row_debounced;
+}