/* Copyright 2012 Jun Wako <wakojun@gmail.com>: TMK Matrix * Copyright 2018 bakageta <amo@bakageta.com> * * This is heavily based on hid_liber/board.{c|h}. * https://github.com/BathroomEpiphanies/AVR-Keyboard * * Copyright (c) 2012 Fredrik Atmer, Bathroom Epiphanies Inc * http://bathroomepiphanies.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/>. */ #include <stdint.h> #include <stdbool.h> #if defined(__AVR__) #include <avr/io.h> #endif #include <util/delay.h> #include "wait.h" #include "print.h" #include "debug.h" #include "util.h" #include "matrix.h" #include "timer.h" #ifndef DEBOUNCE # define DEBOUNCE 5 #endif static uint8_t debouncing = DEBOUNCE; // bit array of key state(1:on, 0:off) static matrix_row_t matrix[MATRIX_ROWS]; static matrix_row_t matrix_debouncing[MATRIX_ROWS]; #define _DDRA (uint8_t *const)&DDRA #define _DDRB (uint8_t *const)&DDRB #define _DDRC (uint8_t *const)&DDRC #define _DDRD (uint8_t *const)&DDRD #define _DDRE (uint8_t *const)&DDRE #define _DDRF (uint8_t *const)&DDRF #define _PINA (uint8_t *const)&PINA #define _PINB (uint8_t *const)&PINB #define _PINC (uint8_t *const)&PINC #define _PIND (uint8_t *const)&PIND #define _PINE (uint8_t *const)&PINE #define _PINF (uint8_t *const)&PINF #define _PORTA (uint8_t *const)&PORTA #define _PORTB (uint8_t *const)&PORTB #define _PORTC (uint8_t *const)&PORTC #define _PORTD (uint8_t *const)&PORTD #define _PORTE (uint8_t *const)&PORTE #define _PORTF (uint8_t *const)&PORTF #define _BIT0 0x01 #define _BIT1 0x02 #define _BIT2 0x04 #define _BIT3 0x08 #define _BIT4 0x10 #define _BIT5 0x20 #define _BIT6 0x40 #define _BIT7 0x80 /* Specifies the ports and pin numbers for the rows */ static uint8_t *const row_ddr[MATRIX_ROWS] = { _DDRB, _DDRB, _DDRC, _DDRC, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRF, _DDRF, _DDRF, _DDRF, _DDRF, _DDRF}; static uint8_t *const row_port[MATRIX_ROWS] = { _PORTB, _PORTB, _PORTC, _PORTC, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTF, _PORTF, _PORTF, _PORTF, _PORTF, _PORTF}; static uint8_t *const row_pin[MATRIX_ROWS] = { _PINB, _PINB, _PINC, _PINC, _PIND, _PIND, _PIND, _PIND, _PIND, _PIND, _PIND, _PIND, _PINF, _PINF, _PINF, _PINF, _PINF, _PINF}; static const uint8_t row_bit[MATRIX_ROWS] = { _BIT4, _BIT7, _BIT6, _BIT7, _BIT0, _BIT1, _BIT2, _BIT3, _BIT4, _BIT5, _BIT6, _BIT7, _BIT0, _BIT1, _BIT4, _BIT5, _BIT6, _BIT7}; static const uint8_t mask = 0x0E; /* Specifies the ports and pin numbers for the columns */ static const uint8_t col_bit[MATRIX_COLS] = { 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E}; __attribute__ ((weak)) void matrix_init_kb(void) { matrix_init_user(); } __attribute__ ((weak)) void matrix_scan_kb(void) { matrix_scan_user(); } __attribute__ ((weak)) void matrix_init_user(void) { } __attribute__ ((weak)) void matrix_scan_user(void) { } static inline void pull_column(int col) { PORTB = col_bit[col] | (PORTB & ~mask); } static inline void release_column(int col) { } /* PORTB is set as input with pull-up resistors PORTC,D,E,F are set to high output */ static void setup_io_pins(void) { uint8_t row; DDRB |= 0x0E; PORTB &= ~0x0E; for(row = 0; row < MATRIX_ROWS; row++) { *row_ddr[row] &= ~row_bit[row]; *row_port[row] &= ~row_bit[row]; } } static void setup_leds(void) { DDRB |= 0x60; PORTB |= 0x60; } inline uint8_t matrix_rows(void) { return MATRIX_ROWS; } inline uint8_t matrix_cols(void) { return MATRIX_COLS; } void matrix_init(void) { // To use PORTF disable JTAG with writing JTD bit twice within four cycles. MCUCR |= (1<<JTD); MCUCR |= (1<<JTD); // initialize row and col setup_io_pins(); setup_leds(); // initialize matrix state: all keys off for (uint8_t i=0; i < MATRIX_ROWS; i++) { matrix[i] = 0; matrix_debouncing[i] = 0; } matrix_init_quantum(); } uint8_t matrix_scan(void) { for (uint8_t col = 0; col < MATRIX_COLS; col++) { // 0-7 pull_column(col); // output hi on theline _delay_us(5); // without this wait it won't read stable value. for (uint8_t row = 0; row < MATRIX_ROWS; row++) { // 0-17 bool prev_bit = matrix_debouncing[row] & (1<<col); bool curr_bit = *row_pin[row] & row_bit[row]; if (prev_bit != curr_bit) { matrix_debouncing[row] ^= ((matrix_row_t)1<<col); if (debouncing) { dprintf("bounce!: %02X\n", debouncing); } debouncing = DEBOUNCE; } } release_column(col); } if (debouncing) { if (--debouncing) { _delay_ms(1); } else { for (uint8_t i = 0; i < MATRIX_ROWS; i++) { matrix[i] = matrix_debouncing[i]; } } } matrix_scan_quantum(); return 1; } bool matrix_is_modified(void) { // NOTE: no longer used return true; } inline bool matrix_has_ghost(void) { return false; } 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 01234567\n"); for (uint8_t row = 0; row < MATRIX_ROWS; row++) { phex(row); print(": "); pbin_reverse(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++) { for (uint8_t j = 0; j < MATRIX_COLS; j++) { if (matrix_is_on(i, j)) count++; } } return count; }