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@@ -1,194 +0,0 @@
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-/*
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-Copyright 2018 Carlos Filoteo
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-
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-This program is free software: you can redistribute it and/or modify
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-it under the terms of the GNU General Public License as published by
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-the Free Software Foundation, either version 2 of the License, or
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-(at your option) any later version.
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-
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-This program is distributed in the hope that it will be useful,
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-but WITHOUT ANY WARRANTY; without even the implied warranty of
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-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-GNU General Public License for more details.
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-
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-You should have received a copy of the GNU General Public License
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-along with this program. If not, see <http://www.gnu.org/licenses/>.
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-*/
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-
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-/*
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- * scan matrix
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- */
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-#include <stdint.h>
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-#include <stdbool.h>
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-#include <avr/io.h>
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-#include <util/delay.h>
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-#include "print.h"
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-#include "debug.h"
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-#include "util.h"
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-#include "matrix.h"
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-
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-#ifndef DEBOUNCE
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-# define DEBOUNCE 5
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-#endif
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-static uint8_t debouncing = DEBOUNCE;
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-
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-/* matrix state(1:on, 0:off) */
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-static matrix_row_t matrix[MATRIX_ROWS];
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-static matrix_row_t matrix_debouncing[MATRIX_ROWS];
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-
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-static matrix_row_t read_cols(void);
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-static void init_cols(void);
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-static void unselect_rows(void);
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-static void select_row(uint8_t row);
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-
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-
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-inline
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-uint8_t matrix_rows(void)
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-{
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- return MATRIX_ROWS;
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-}
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-
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-inline
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-uint8_t matrix_cols(void)
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-{
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- return MATRIX_COLS;
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-}
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-
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-void matrix_init(void)
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-{
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- // initialize row and col
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- unselect_rows();
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- init_cols();
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-
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- // initialize matrix state: all keys off
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- for (uint8_t i=0; i < MATRIX_ROWS; i++) {
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- matrix[i] = 0;
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- matrix_debouncing[i] = 0;
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- }
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-}
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-
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-uint8_t matrix_scan(void)
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-{
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- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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- select_row(i);
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- _delay_us(30); // without this wait read unstable value.
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- matrix_row_t cols = read_cols();
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- if (matrix_debouncing[i] != cols) {
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- matrix_debouncing[i] = cols;
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- if (debouncing) {
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- dprintf("bounce!: %02X\n", debouncing);
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- }
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- debouncing = DEBOUNCE;
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- }
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- unselect_rows();
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- }
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-
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- if (debouncing) {
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- if (--debouncing) {
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- _delay_ms(1);
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- } else {
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- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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- matrix[i] = matrix_debouncing[i];
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- }
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- }
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- }
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-
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- return 1;
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-}
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-
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-inline
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-bool matrix_is_on(uint8_t row, uint8_t col)
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-{
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- return (matrix[row] & ((matrix_row_t)1<<col));
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-}
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-
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-inline
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-matrix_row_t matrix_get_row(uint8_t row)
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-{
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- return matrix[row];
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-}
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-
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-void matrix_print(void)
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-{
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- print("\nr/c 0123456789ABCDEF\n");
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- for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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- print_hex8(row); print(": ");
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- print_bin_reverse16(matrix_get_row(row));
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- print("\n");
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- }
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-}
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-
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-/* Column pin configuration
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- * col: 0 1 2 3 4 5 6 7 8 9 10 11
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- * pin: D7 E6 B4 B5 B6 B2 B3 B1 F7 F6 F5 F4
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- */
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-
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-static void init_cols(void)
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-{
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- // Input with pull-up(DDR:0, PORT:1)
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- gpio_set_pin_input_high(F4);
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- gpio_set_pin_input_high(F5);
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- gpio_set_pin_input_high(F6);
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- gpio_set_pin_input_high(F7);
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- gpio_set_pin_input_high(E6);
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- gpio_set_pin_input_high(D7);
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- gpio_set_pin_input_high(B1);
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- gpio_set_pin_input_high(B2);
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- gpio_set_pin_input_high(B3);
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- gpio_set_pin_input_high(B4);
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- gpio_set_pin_input_high(B5);
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- gpio_set_pin_input_high(B6);
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-}
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-
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-static matrix_row_t read_cols(void)
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-{
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- return (PIND&(1<<7) ? 0 : (1<<0)) |
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- (PINE&(1<<6) ? 0 : (1<<1)) |
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- (PINB&(1<<4) ? 0 : (1<<2)) |
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- (PINB&(1<<5) ? 0 : (1<<3)) |
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- (PINB&(1<<6) ? 0 : (1<<4)) |
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- (PINB&(1<<2) ? 0 : (1<<5)) |
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- (PINB&(1<<3) ? 0 : (1<<6)) |
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- (PINB&(1<<1) ? 0 : (1<<7)) |
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- (PINF&(1<<7) ? 0 : (1<<8)) |
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- (PINF&(1<<6) ? 0 : (1<<9)) |
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- (PINF&(1<<5) ? 0 : (1<<10)) |
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- (PINF&(1<<4) ? 0 : (1<<11));
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-}
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-
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-/* Row pin configuration
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- * row: 0 1 2 3
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- * pin: D1 D0 D4 C6
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- */
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-
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-static void unselect_rows(void)
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-{
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- // Hi-Z(DDR:0, PORT:0) to unselect
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- gpio_set_pin_input(C6);
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- gpio_set_pin_input(D0);
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- gpio_set_pin_input(D1);
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- gpio_set_pin_input(D4);
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-}
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-
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-static void select_row(uint8_t row)
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-{
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- // Output low(DDR:1, PORT:0) to select
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- switch (row) {
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- case 0:
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- gpio_set_pin_output(D1);
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- gpio_write_pin_low(D1);
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- break;
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- case 1:
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- gpio_set_pin_output(D0);
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- gpio_write_pin_low(D0);
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- break;
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- case 2:
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- gpio_set_pin_output(D4);
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- gpio_write_pin_low(D4);
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- break;
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- case 3:
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- gpio_set_pin_output(C6);
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- gpio_write_pin_low(C6);
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- break;
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- }
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-}
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