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- /*
- Copyright 2014 Jun Wako <[email protected]>
-
- 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 "action.h"
- #include "print.h"
- #include "debug.h"
- #include "util.h"
- #include "ibm4704.h"
- #include "matrix.h"
-
-
- static void matrix_make(uint8_t code);
- static void matrix_break(uint8_t code);
- static void matrix_clear(void);
-
-
- /*
- * Matrix Array usage:
- * IBM 4704 scan codes are assigned into 128(16x8)-cell matrix.
- *
- * 8bit wide
- * +---------+
- * 0| |
- * :| XX | 00-7F
- * f| |
- * +---------+
- *
- * Exceptions:
- */
- static uint8_t matrix[MATRIX_ROWS];
-
- // scan code bits 7654 3210
- // R:row/C:column -RRR RCCC
- #define ROW(code) ((code>>3)&0x0f)
- #define COL(code) (code&0x07)
-
-
- inline
- uint8_t matrix_rows(void)
- {
- return MATRIX_ROWS;
- }
-
- inline
- uint8_t matrix_cols(void)
- {
- return MATRIX_COLS;
- }
-
- static void enable_break(void)
- {
- print("Enable break: ");
- while (ibm4704_send(0xFC)) { _delay_ms(10); }
- // valid scancode: 00-79h
- for (uint8_t code = 0; code < 0x7F; code++) {
- while (ibm4704_send(0x80|code)) _delay_ms(10);
- _delay_ms(5); // wait for response
- // No response(FF) when ok, FD when out of bound
- xprintf("s%02X:r%02X ", code, ibm4704_recv());
- }
- while (ibm4704_send(0xFF)) { _delay_ms(10); } // End
- print("End\n");
- }
-
-
- void matrix_setup(void)
- {
- ibm4704_init();
- }
-
- void matrix_init(void)
- {
- debug_enable = true;
-
- print("IBM 4704 converter\n");
- matrix_clear();
- _delay_ms(2000); // wait for keyboard starting up
- xprintf("Keyboard ID: %02X\n", ibm4704_recv());
- enable_break();
- }
-
- /*
- * IBM 4704 Scan Code
- */
- uint8_t matrix_scan(void)
- {
- uint8_t code = ibm4704_recv();
- if (code==0xFF) {
- // Not receivd
- return 0;
- } else if ((code&0x7F) >= 0x7C) {
- // 0xFF-FC and 0x7F-7C is not scancode
- xprintf("Error: %02X\n", code);
- matrix_clear();
- return 0;
- } else if (code&0x80) {
- dprintf("%02X\n", code);
- matrix_make(code);
- } else {
- dprintf("%02X\n", code);
- matrix_break(code);
- }
- return 1;
- }
-
- 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++) {
- xprintf("%02X: %08b\n", row, bitrev(matrix_get_row(row)));
- }
- }
-
-
-
- inline
- static void matrix_make(uint8_t code)
- {
- matrix[ROW(code)] |= 1<<COL(code);
- }
-
- inline
- static void matrix_break(uint8_t code)
- {
- matrix[ROW(code)] &= ~(1<<COL(code));
- }
-
- inline
- static void matrix_clear(void)
- {
- for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
- }
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