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authortmk <nobody@nowhere>2013-02-22 09:53:46 +0900
committertmk <nobody@nowhere>2013-02-22 09:53:46 +0900
commitf68c5bf0d30dc1300c71dabc63d2c2970f7337c9 (patch)
treeb44e062c435278d455dedd8204ef4a02b4ed08cd /converter/pc98_usb/matrix.c
parent7a31451a077a55e1ad97cf8b31a111c7cd311a4d (diff)
Add initial files for PC98
Diffstat (limited to 'converter/pc98_usb/matrix.c')
-rw-r--r--converter/pc98_usb/matrix.c179
1 files changed, 179 insertions, 0 deletions
diff --git a/converter/pc98_usb/matrix.c b/converter/pc98_usb/matrix.c
new file mode 100644
index 0000000000..b3c11dc210
--- /dev/null
+++ b/converter/pc98_usb/matrix.c
@@ -0,0 +1,179 @@
+/*
+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 "matrix.h"
+#include "debug.h"
+#include "protocol/serial.h"
+
+
+/*
+ * Matrix Array usage:
+ *
+ * ROW: 16(4bits)
+ * COL: 8(3bits)
+ *
+ * 8bit wide
+ * +---------+
+ * 0|00 ... 07|
+ * 1|08 ... 0F|
+ * :| ... |
+ * :| ... |
+ * E|70 ... 77|
+ * F|78 ... 7F|
+ * +---------+
+ */
+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;
+
+ PC98_RST_DDR |= (1<<PC98_RST_BIT);
+ PC98_RDY_DDR |= (1<<PC98_RDY_BIT);
+ PC98_RTY_DDR |= (1<<PC98_RTY_BIT);
+ PC98_RST_PORT |= (1<<PC98_RST_BIT);
+ PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
+ PC98_RTY_PORT |= (1<<PC98_RTY_BIT);
+
+
+ serial_init();
+
+ // PC98 reset
+ PC98_RST_PORT &= ~(1<<PC98_RST_BIT);
+ _delay_us(15);
+ PC98_RST_PORT |= (1<<PC98_RST_BIT);
+ _delay_us(13);
+ PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
+
+ // initialize matrix state: all keys off
+ for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
+
+ debug("init\n");
+ return;
+}
+
+uint8_t matrix_scan(void)
+{
+ is_modified = false;
+
+ uint8_t code;
+ PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
+ code = serial_recv();
+ PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
+ if (!code) return 0;
+
+ debug_hex(code); debug(" ");
+
+/*
+ switch (code) {
+ case 0x7E: // reset fail
+ case 0xFE: // layout
+ case 0xFF: // reset success
+ _delay_ms(500);
+ // ignore response byte
+ debug("(response ignored:");
+ while ((code = serial_recv())) { debug(" "); debug_hex(code); }
+ debug(") ");
+ // FALL THROUGH
+ case 0x7F:
+ // all keys up
+ for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
+ 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;
+}