1 /* Copyright 2017-2019 Nikolaus Wittenstein <nikolaus.wittenstein@gmail.com>
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
8 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
9 * FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
10 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
11 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
12 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
13 * PERFORMANCE OF THIS SOFTWARE.
25 static matrix_row_t matrix[MATRIX_ROWS];
27 static matrix_row_t read_cols(void);
28 static void select_row(uint8_t row);
30 void matrix_init(void) {
31 /* See datahand.h for more detail on pins. */
33 /* 7 - matrix scan; 6-3 - mode LEDs */
36 /* 1-0 - matrix scan */
45 /* Turn off the non-Normal LEDs (they're active low). */
46 PORTB |= LED_TENKEY | LED_FN | LED_NAS;
48 /* Turn off the lock LEDs. */
49 PORTF |= LED_CAPS_LOCK | LED_NUM_LOCK | LED_SCROLL_LOCK | LED_MOUSE_LOCK;
54 uint8_t matrix_scan(void) {
55 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
57 /* The default hardware works down to at least 100us, but I have a replacement
58 * photodiode that responds a little more slowly. Cranking it up to 1000us fixes
62 matrix[row] = read_cols();
70 matrix_row_t matrix_get_row(uint8_t row) {
74 void matrix_print(void) {
75 print("\nr/c 01234567\n");
77 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
80 print_bin_reverse8(matrix_get_row(row));
85 bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
86 return process_record_user(keycode, record);
89 static void select_row(uint8_t row) {
90 /* Original 8051: P1 bits 0-3 (pins 1-4)
91 * Teensy++: PE0, PB7, PD0, PD1
119 static matrix_row_t read_cols(void) {
120 /* Original 8051: P1 bits 4-7 (pins 5-8)
121 * Teensy++: PD bits 2-5
124 return (PIND & 0b00111100) >> 2;