1 files changed, 142 insertions, 0 deletions
diff --git a/converter/m0110_usb/matrix.c b/converter/m0110_usb/matrix.c
new file mode 100644
index 0000000000..2189c0b56f
--- /dev/null
+++ b/converter/m0110_usb/matrix.c
@@ -0,0 +1,142 @@
+/*
+Copyright 2011,2012 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 <util/delay.h>
+#include "print.h"
+#include "util.h"
+#include "debug.h"
+#include "host.h"
+#include "led.h"
+#include "m0110.h"
+#include "matrix.h"
+
+
+#define CAPS        0x39
+#define CAPS_BREAK  (CAPS | 0x80)
+#define ROW(key)    ((key)>>3&0x0F)
+#define COL(key)    ((key)&0x07)
+
+
+static bool is_modified = false;
+
+// matrix state buffer(1:on, 0:off)
+static uint8_t *matrix;
+static uint8_t _matrix0[MATRIX_ROWS];
+
+static void register_key(uint8_t key);
+
+
+inline
+uint8_t matrix_rows(void)
+{
+    return MATRIX_ROWS;
+}
+
+inline
+uint8_t matrix_cols(void)
+{
+    return MATRIX_COLS;
+}
+
+void matrix_init(void)
+{
+    m0110_init();
+    // initialize matrix state: all keys off
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
+    matrix = _matrix0;
+    return;
+}
+
+uint8_t matrix_scan(void)
+{
+    uint8_t key;
+
+    is_modified = false;
+    key = m0110_recv_key();
+
+    if (key == M0110_NULL) {
+        return 0;
+    } else if (key == M0110_ERROR) {
+        return 0;
+    } else {
+        is_modified = true;
+        register_key(key);
+    }
+
+    if (debug_enable) {
+        print("["); phex(key); print("]\n");
+    }
+    return 1;
+}
+
+bool matrix_is_modified(void)
+{
+    return is_modified;
+}
+
+inline
+bool matrix_has_ghost(void)
+{
+    return false;
+}
+
+inline
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+    return (matrix[row] & (1<<col));
+}
+
+inline
+uint8_t matrix_get_row(uint8_t row)
+{
+    return matrix[row];
+}
+
+void matrix_print(void)
+{
+    print("\nr/c 01234567\n");
+    for (uint8_t row = 0; row < matrix_rows(); row++) {
+        phex(row); print(": ");
+        pbin_reverse(matrix_get_row(row));
+        print("\n");
+    }
+}
+
+uint8_t matrix_key_count(void)
+{
+    uint8_t count = 0;
+    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        count += bitpop(matrix[i]);
+    }
+    return count;
+}
+
+inline
+static void register_key(uint8_t key)
+{
+    if (key&0x80) {
+        matrix[ROW(key)] &= ~(1<<COL(key));
+    } else {
+        matrix[ROW(key)] |=  (1<<COL(key));
+    }
+}