--- /dev/null
+/*
+Copyright 2014 Kai Ryu <kai1103@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/>.
+*/
+
+/*
+ * scan matrix
+ */
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include <util/delay.h>
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+#ifdef UART_RGB_ENABLE
+#include "uart_rgb.h"
+#endif
+
+#ifndef DEBOUNCE
+# define DEBOUNCE 5
+#endif
+static uint8_t debouncing = DEBOUNCE;
+
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+static matrix_row_t read_cols(void);
+static void init_cols(void);
+static void init_rows(void);
+static void unselect_rows(void);
+static void select_row(uint8_t row);
+
+inline
+uint8_t matrix_rows(void)
+{
+ return MATRIX_ROWS;
+}
+
+inline
+uint8_t matrix_cols(void)
+{
+ return MATRIX_COLS;
+}
+
+void matrix_init(void)
+{
+
+#ifdef UART_RGB_ENABLE
+ uart_rgb_init();
+#endif
+ // disable JTAG
+ MCUCR = _BV(JTD);
+ MCUCR = _BV(JTD);
+
+ // 85 REST
+ DDRD |= _BV(PD7);
+ PORTD |= _BV(PD7);
+
+ // initialize row and col
+ init_rows();
+ init_cols();
+
+ // initialize matrix state: all keys off
+ for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+ matrix[i] = 0;
+ matrix_debouncing[i] = 0;
+ }
+}
+
+uint8_t matrix_scan(void)
+{
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ select_row(i);
+ _delay_us(30); // without this wait read unstable value.
+ matrix_row_t cols = read_cols();
+ if (matrix_debouncing[i] != cols) {
+ matrix_debouncing[i] = cols;
+ if (debouncing) {
+ debug("bounce!: "); debug_hex(debouncing); debug("\n");
+ }
+ debouncing = DEBOUNCE;
+ }
+ unselect_rows();
+ }
+
+ if (debouncing) {
+ if (--debouncing) {
+ _delay_ms(1);
+ } else {
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ matrix[i] = matrix_debouncing[i];
+ }
+ }
+ }
+
+ return 1;
+}
+
+bool matrix_is_modified(void)
+{
+ if (debouncing) return false;
+ return true;
+}
+
+inline
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+ return (matrix[row] & ((matrix_row_t)1<<col));
+}
+
+inline
+matrix_row_t matrix_get_row(uint8_t row)
+{
+ return matrix[row];
+}
+
+void matrix_print(void)
+{
+ print("\nr/c 0123456789ABCDEF\n");
+ for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+ phex(row); print(": ");
+ pbin_reverse16(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 += bitpop16(matrix[i]);
+ }
+ return count;
+}
+
+/* Column pin configuration
+ * col: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
+ * pin: F7 F6 F5 F4 F1 F0 E6 D7 D6 D5 D1 D0 B7 B6 B0 C7
+ * */
+static void init_cols(void)
+{
+ // Input with pull-up(DDR:0, PORT:1)
+ DDRF &= 0b00001100;
+ PORTF |= 0b11110011;
+
+ DDRD &= 0b00011100;
+ PORTD |= 0b11100011;
+
+ DDRB &= ~(_BV(PB6) | _BV(PB7)| _BV(PB0));
+ PORTB |= (_BV(PB6) | _BV(PB7)| _BV(PB0));
+
+ DDRE &= ~_BV(PE6);
+ PORTE |= _BV(PE6);
+
+ DDRC &= ~_BV(PC7);
+ PORTC |= _BV(PC7);
+
+}
+
+static matrix_row_t read_cols(void)
+{
+
+ return (PINF&_BV(PF7) ? 0 : (1<<0)) |
+ (PINF&_BV(PF6) ? 0 : (1<<1)) |
+ (PINF&_BV(PF5) ? 0 : (1<<2)) |
+ (PINF&_BV(PF4) ? 0 : (1<<3)) |
+ (PINF&_BV(PF1) ? 0 : (1<<4)) |
+ (PINF&_BV(PF0) ? 0 : (1<<5)) |
+ (PINE&_BV(PE6) ? 0 : (1<<6)) |
+ (PIND&_BV(PD7) ? 0 : (1<<7)) |
+ (PIND&_BV(PD6) ? 0 : (1<<8)) |
+ (PIND&_BV(PD5) ? 0 : (1<<9)) |
+ (PIND&_BV(PD1) ? 0 : (1<<10)) |
+ (PIND&_BV(PD0) ? 0 : (1<<11)) |
+ (PINB&_BV(PB7) ? 0 : (1<<12)) |
+ (PINB&_BV(PB6) ? 0 : (1<<13)) |
+ (PINB&_BV(PB0) ? 0 : (1<<14)) |
+ (PINC&_BV(PC7) ? 0 : (1<<15));
+}
+
+/* Row pin configuration
+ * row: 0 1 2 3 4 5 x
+ * pin: B3 0 1 0 1 0 1 1
+ * B2 0 0 1 1 0 0 1
+ * B1 0 0 0 0 1 1 1
+ */
+
+static void init_rows(void)
+{
+ DDRB |= (1<<PB1 | 1<<PB2 | 1<<PB3);
+}
+
+static void unselect_rows(void)
+{
+ // Hi-Z(DDR:0, PORT:0) to unselect
+ PORTB |= (1<<PB1);
+ PORTB |= (1<<PB2);
+ PORTB |= (1<<PB3);
+}
+
+static void select_row(uint8_t row)
+{
+ // Output low(DDR:1, PORT:0) to select
+ (row & (1<<0)) ? (PORTB |= (1<<PB3)) : (PORTB &= ~(1<<PB3));
+ (row & (1<<1)) ? (PORTB |= (1<<PB2)) : (PORTB &= ~(1<<PB2));
+ (row & (1<<2)) ? (PORTB |= (1<<PB1)) : (PORTB &= ~(1<<PB1));
+}
projects / qmk_firmware.git / blobdiff