From e7c030375ac76907206db7f09cf9208b0c7c6e66 Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Mon, 27 Aug 2012 15:18:01 +0900
Subject: Add USB to USB converter. unmature.

---
 converter/usb_usb/matrix.c | 133 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 converter/usb_usb/matrix.c

(limited to 'converter/usb_usb/matrix.c')

diff --git a/converter/usb_usb/matrix.c b/converter/usb_usb/matrix.c
new file mode 100644
index 0000000000..1cfecde203
--- /dev/null
+++ b/converter/usb_usb/matrix.c
@@ -0,0 +1,133 @@
+/*
+Copyright 2011 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/>.
+*/
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "usb_hid.h"
+#include "usb_keycodes.h"
+#include "util.h"
+#include "print.h"
+#include "debug.h"
+#include "matrix.h"
+
+/* KEY CODE to Matrix
+ *
+ * HID keycode(1 byte):
+ * Higher 5 bits indicates ROW and lower 3 bits COL.
+ *
+ *  7 6 5 4 3 2 1 0
+ * +---------------+
+ * |   ROW   | COL |
+ * +---------------+
+ *
+ * Matrix space(32 * 8):
+ *      01234567
+ *   0 +--------+
+ *   : |        |
+ *   : |        |
+ *  31 +--------+
+ */
+#define ROW_MASK 0xF8
+#define COL_MASK 0x07
+#define CODE(row, col)  (((row) << 3) | (col))
+#define ROW(code)       (((code) & ROW_MASK) >> 3)
+#define COL(code)       ((code) & COL_MASK)
+#define ROW_BITS(code)  (1 << COL(code))
+
+
+uint8_t matrix_rows(void) { return MATRIX_ROWS; }
+uint8_t matrix_cols(void) { return MATRIX_COLS; }
+void matrix_init(void) {}
+bool matrix_has_ghost(void) { return false; }
+
+static bool matrix_is_mod =false;
+
+uint8_t matrix_scan(void) {
+    static uint16_t last_time_stamp = 0;
+
+    if (last_time_stamp != usb_hid_time_stamp) {
+        last_time_stamp = usb_hid_time_stamp;
+        matrix_is_mod = true;
+    } else {
+        matrix_is_mod = false;
+    }
+    return 1;
+}
+
+bool matrix_is_modified(void) {
+
+    return matrix_is_mod;
+}
+
+bool matrix_is_on(uint8_t row, uint8_t col) {
+    uint8_t code = CODE(row, col);
+
+    if (IS_MOD(code)) {
+        if (usb_hid_keyboard_report.mods & ROW_BITS(code)) {
+            return true;
+        }
+    }
+    for (uint8_t i = 0; i < REPORT_KEYS; i++) {
+        if (usb_hid_keyboard_report.keys[i] == code) {
+            return true;
+        }
+    }
+    return false;
+}
+
+uint8_t matrix_get_row(uint8_t row) {
+    uint8_t row_bits = 0;
+
+    if (IS_MOD(CODE(row, 0)) && usb_hid_keyboard_report.mods) {
+        row_bits |= usb_hid_keyboard_report.mods;
+    }
+
+    for (uint8_t i = 0; i < REPORT_KEYS; i++) {
+        if (IS_ANY(usb_hid_keyboard_report.keys[i])) {
+            if (row == ROW(usb_hid_keyboard_report.keys[i])) {
+                row_bits |= ROW_BITS(usb_hid_keyboard_report.keys[i]);
+            }
+        }
+    }
+    return row_bits;
+}
+
+uint8_t matrix_key_count(void) {
+    uint8_t count = 0;
+
+    count += bitpop(usb_hid_keyboard_report.mods);
+    for (uint8_t i = 0; i < REPORT_KEYS; i++) {
+        if (IS_ANY(usb_hid_keyboard_report.keys[i])) {
+            count++;
+        }
+    }
+    return count;
+}
+
+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));
+#ifdef MATRIX_HAS_GHOST
+        if (matrix_has_ghost_in_row(row)) {
+            print(" <ghost");
+        }
+#endif
+        print("\n");
+    }
+}
-- 
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