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- /* Copyright 2017-2019 Nikolaus Wittenstein <nikolaus.wittenstein@gmail.com>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
- * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
- * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
- * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
-
- #include "datahand.h"
-
- #include "matrix.h"
- #include "action.h"
-
- #include <stdint.h>
- #include <stdbool.h>
- #include <avr/io.h>
-
- static matrix_row_t matrix[MATRIX_ROWS];
-
- static matrix_row_t read_cols(void);
- static void select_row(uint8_t row);
-
- void matrix_init(void) {
- /* See datahand.h for more detail on pins. */
-
- /* 7 - matrix scan; 6-3 - mode LEDs */
- DDRB = 0b11111000;
-
- /* 1-0 - matrix scan */
- DDRD = 0b00000011;
-
- /* 6 - matrix scan */
- DDRE = 0b01000000;
-
- /* 7-4 - lock LEDs */
- DDRF = 0b11110000;
-
- /* Turn off the non-Normal LEDs (they're active low). */
- PORTB |= LED_TENKEY | LED_FN | LED_NAS;
-
- /* Turn off the lock LEDs. */
- PORTF |= LED_CAPS_LOCK | LED_NUM_LOCK | LED_SCROLL_LOCK | LED_MOUSE_LOCK;
-
- matrix_init_user();
- }
-
- uint8_t matrix_scan(void) {
- for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
- select_row(row);
- /* The default hardware works down to at least 100us, but I have a replacement
- * photodiode that responds a little more slowly. Cranking it up to 1000us fixes
- * shadowing issues.
- */
- _delay_us(1000);
- matrix[row] = read_cols();
- }
-
- matrix_scan_user();
-
- return 1;
- }
-
- matrix_row_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(": ");
- print_bin_reverse8(matrix_get_row(row));
- print("\n");
- }
- }
-
- bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
- return process_record_user(keycode, record);
- }
-
- static void select_row(uint8_t row) {
- /* Original 8051: P1 bits 0-3 (pins 1-4)
- * Teensy++: PE0, PB7, PD0, PD1
- */
-
- if (row & (1<<0)) {
- PORTE |= (1<<6);
- } else {
- PORTE &= ~(1<<6);
- }
-
- if (row & (1<<1)) {
- PORTB |= (1<<7);
- } else {
- PORTB &= ~(1<<7);
- }
-
- if (row & (1<<2)) {
- PORTD |= (1<<0);
- } else {
- PORTD &= ~(1<<0);
- }
-
- if (row & (1<<3)) {
- PORTD |= (1<<1);
- } else {
- PORTD &= ~(1<<1);
- }
- }
-
- static matrix_row_t read_cols(void) {
- /* Original 8051: P1 bits 4-7 (pins 5-8)
- * Teensy++: PD bits 2-5
- */
-
- return (PIND & 0b00111100) >> 2;
- }
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