From 97ee1be59da06063275d315d1ea5fa4f14eee6b0 Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Thu, 18 Oct 2012 10:41:37 +0900
Subject: Add Sun converter initial files.

---
 converter/sun_usb/matrix.c | 180 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 180 insertions(+)
 create mode 100644 converter/sun_usb/matrix.c

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

diff --git a/converter/sun_usb/matrix.c b/converter/sun_usb/matrix.c
new file mode 100644
index 0000000000..c1e98257d9
--- /dev/null
+++ b/converter/sun_usb/matrix.c
@@ -0,0 +1,180 @@
+/*
+Copyright 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/>.
+*/
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include <util/delay.h>
+#include "print.h"
+#include "util.h"
+#include "serial.h"
+#include "matrix.h"
+#include "debug.h"
+
+
+/*
+ * Matrix Array usage:
+ *
+ * ROW: 16(4bits)
+ * COL:  8(3bits)
+ *
+ *    8bit wide
+ *   +---------+
+ *  0|00 ... 07|
+ *  1|08 ... 0F|
+ *  :|   ...   |
+ *  :|   ...   |
+ *  E|70 ... 77|
+ *  F|78 ... 7F|
+ *   +---------+
+ *
+ * Command From System To Keyboard
+ * 0x01 Reset
+ * 0x02 Bell On
+ * 0x03 Bell Off
+ * 0x0A Click On
+ * 0x0B Click Off
+ * 0x0E LED
+ * 0x0F Layout
+ *
+ * Command From Keyboard To System
+ * 0x7F Idle
+ * 0xFE Layout Response
+ * 0xFF Reset Response(followed by 0x04)
+ *
+ * bit: 3       2       1       0
+ * LED: CapsLk  ScrLk   Compose NumLk
+ *      
+ * Connector
+ *   8Pin mini DIN
+ *      8  7  6
+ *     5    4  3
+ *       2   1
+ *     receptacle
+ *
+ * 1: GND
+ * 2: GND
+ * 3: 5V
+ * 4: RX/TX(Mouse)
+ * 5: RX
+ * 6: TX
+ * 7: GND
+ * 8: 5V
+ */
+static uint8_t matrix[MATRIX_ROWS];
+#define ROW(code)      ((code>>3)&0xF)
+#define COL(code)      (code&0x07)
+
+static bool is_modified = false;
+
+
+inline
+uint8_t matrix_rows(void)
+{
+    return MATRIX_ROWS;
+}
+
+inline
+uint8_t matrix_cols(void)
+{
+    return MATRIX_COLS;
+}
+
+void matrix_init(void)
+{
+    print_enable = true;
+    debug_enable = true;
+
+    serial_init();
+
+    // initialize matrix state: all keys off
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
+
+    return;
+}
+
+uint8_t matrix_scan(void)
+{
+    is_modified = false;
+
+    uint8_t code;
+    code = serial_recv();
+    if (code == 0) {
+        return 0;
+    }
+
+    phex(code); print("(");
+    code = ~code;
+    phex(code); print(")");
+return 0;
+    if (code&0x80) {
+        // break code
+        if (matrix_is_on(ROW(code), COL(code))) {
+            matrix[ROW(code)] &= ~(1<<COL(code));
+            is_modified = true;
+        }
+    } else {
+        // make code
+        if (!matrix_is_on(ROW(code), COL(code))) {
+            matrix[ROW(code)] |=  (1<<COL(code));
+            is_modified = true;
+        }
+    }
+    return code;
+}
+
+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;
+}
-- 
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