424 lines
11 KiB
C
424 lines
11 KiB
C
/*
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Copyright 2012 Jun Wako
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Copyright 2014 Jack Humbert
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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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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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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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#include <stdint.h>
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#include <stdbool.h>
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#if defined(__AVR__)
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#include <avr/io.h>
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#endif
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#include "wait.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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#if (MATRIX_COLS <= 8)
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# define print_matrix_header() print("\nr/c 01234567\n")
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# define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
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# define matrix_bitpop(i) bitpop(matrix[i])
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# define ROW_SHIFTER ((uint8_t)1)
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#elif (MATRIX_COLS <= 16)
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# define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
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# define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
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# define matrix_bitpop(i) bitpop16(matrix[i])
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# define ROW_SHIFTER ((uint16_t)1)
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#elif (MATRIX_COLS <= 32)
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# define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
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# define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
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# define matrix_bitpop(i) bitpop32(matrix[i])
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# define ROW_SHIFTER ((uint32_t)1)
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#endif
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#ifdef MATRIX_MASKED
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extern const matrix_row_t matrix_mask[];
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#endif
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/* Set 0 if debouncing isn't needed */
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#ifndef DEBOUNCING_DELAY
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# define DEBOUNCING_DELAY 5
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#endif
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static uint8_t debouncing = DEBOUNCING_DELAY;
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static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
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static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
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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_raw[MATRIX_ROWS];
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#if DIODE_DIRECTION == COL2ROW
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static matrix_row_t matrix_debouncing[MATRIX_ROWS];
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#else // ROW2COL
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static matrix_col_t matrix_transposed[MATRIX_COLS];
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static matrix_col_t matrix_transposed_debouncing[MATRIX_COLS];
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#endif
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#if (DIODE_DIRECTION == COL2ROW)
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static void init_cols(void);
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static void read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
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static void unselect_rows(void);
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static void select_row(uint8_t row);
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static void unselect_row(uint8_t row);
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#else // ROW2COL
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static void init_rows(void);
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static void read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
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static void unselect_cols(void);
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static void unselect_col(uint8_t col);
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static void select_col(uint8_t col);
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#endif
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__attribute__ ((weak))
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void matrix_init_quantum(void) {
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matrix_init_kb();
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}
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__attribute__ ((weak))
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void matrix_scan_quantum(void) {
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matrix_scan_kb();
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}
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__attribute__ ((weak))
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void matrix_init_kb(void) {
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matrix_init_user();
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}
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__attribute__ ((weak))
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void matrix_scan_kb(void) {
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matrix_scan_user();
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}
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__attribute__ ((weak))
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void matrix_init_user(void) {
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}
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__attribute__ ((weak))
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void matrix_scan_user(void) {
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}
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inline
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uint8_t matrix_rows(void) {
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return MATRIX_ROWS;
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}
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inline
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uint8_t matrix_cols(void) {
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return MATRIX_COLS;
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}
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// void matrix_power_up(void) {
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// #if (DIODE_DIRECTION == COL2ROW)
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// for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) {
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// /* DDRxn */
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// _SFR_IO8((row_pins[r] >> 4) + 1) |= _BV(row_pins[r] & 0xF);
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// toggle_row(r);
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// }
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// for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) {
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// /* PORTxn */
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// _SFR_IO8((col_pins[c] >> 4) + 2) |= _BV(col_pins[c] & 0xF);
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// }
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// #else
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// for (int8_t c = MATRIX_COLS - 1; c >= 0; --c) {
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// /* DDRxn */
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// _SFR_IO8((col_pins[c] >> 4) + 1) |= _BV(col_pins[c] & 0xF);
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// toggle_col(c);
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// }
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// for (int8_t r = MATRIX_ROWS - 1; r >= 0; --r) {
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// /* PORTxn */
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// _SFR_IO8((row_pins[r] >> 4) + 2) |= _BV(row_pins[r] & 0xF);
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// }
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// #endif
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// }
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void matrix_init(void) {
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// To use PORTF disable JTAG with writing JTD bit twice within four cycles.
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#if (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega32U4__))
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MCUCR |= _BV(JTD);
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MCUCR |= _BV(JTD);
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#endif
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// initialize row and col
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#if (DIODE_DIRECTION == COL2ROW)
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unselect_rows();
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init_cols();
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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_raw[i] = 0;
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matrix_debouncing[i] = 0;
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}
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#else // ROW2COL
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unselect_cols();
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init_rows();
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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_raw[i] = 0;
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matrix[i] = 0;
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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_COLS; i++) {
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matrix_transposed_debouncing[i] = 0;
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}
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#endif
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matrix_init_quantum();
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}
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uint8_t matrix_scan(void)
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{
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#if (DIODE_DIRECTION == COL2ROW)
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// Set row, read cols
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for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
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read_cols_on_row(matrix, current_row);
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}
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// select_row(i);
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// wait_us(30); // without this wait read unstable value.
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// matrix_row_t current_row = read_cols();
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// if (matrix_debouncing[i] != current_row) {
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// matrix_debouncing[i] = current_row;
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// if (debouncing) {
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// debug("bounce!: "); debug_hex(debouncing); debug("\n");
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// }
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// debouncing = DEBOUNCING_DELAY;
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// }
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// unselect_row(i);
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// }
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// if (debouncing) {
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// if (--debouncing) {
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// wait_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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#else // ROW2COL
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// Set col, read rows
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for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
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read_rows_on_col(matrix, current_col);
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}
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// for (uint8_t i = 0; i < MATRIX_COLS; i++) {
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// select_col(i);
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// wait_us(30); // without this wait read unstable value.
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// matrix_col_t current_col = read_rows();
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// if (matrix_transposed_debouncing[i] != current_col) {
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// matrix_transposed_debouncing[i] = current_col;
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// if (debouncing) {
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// debug("bounce!: "); debug_hex(debouncing); debug("\n");
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// }
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// debouncing = DEBOUNCING_DELAY;
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// }
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// unselect_col(i);
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// }
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// if (debouncing) {
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// if (--debouncing) {
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// wait_ms(1);
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// } else {
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// for (uint8_t i = 0; i < MATRIX_COLS; i++) {
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// matrix_transposed[i] = matrix_transposed_debouncing[i];
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// }
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// }
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// }
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// // Untranspose matrix
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// for (uint8_t y = 0; y < MATRIX_ROWS; y++) {
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// matrix_row_t row = 0;
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// for (uint8_t x = 0; x < MATRIX_COLS; x++) {
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// row |= ((matrix_transposed[x] & (1<<y)) >> y) << x;
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// }
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// matrix[y] = row;
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// }
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#endif
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matrix_scan_quantum();
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return 1;
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}
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bool matrix_is_modified(void)
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{
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if (debouncing) return false;
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return true;
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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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inline
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matrix_row_t matrix_get_row(uint8_t row)
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{
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// Matrix mask lets you disable switches in the returned matrix data. For example, if you have a
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// switch blocker installed and the switch is always pressed.
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#ifdef MATRIX_MASKED
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return matrix[row] & matrix_mask[row];
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#else
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return matrix[row];
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#endif
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}
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void matrix_print(void)
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{
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print_matrix_header();
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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phex(row); print(": ");
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print_matrix_row(row);
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print("\n");
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}
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}
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uint8_t matrix_key_count(void)
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{
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uint8_t count = 0;
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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count += matrix_bitpop(i);
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}
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return count;
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}
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#if (DIODE_DIRECTION == COL2ROW)
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static void init_cols(void)
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{
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for(uint8_t x = 0; x < MATRIX_COLS; x++) {
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uint8_t pin = col_pins[x];
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_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
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_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
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}
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}
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static void read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
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{
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// Clear data in matrix row
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current_matrix[current_row] = 0;
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// Select row and wait for row selecton to stabilize
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select_row(current_row);
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wait_us(30);
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// For each col...
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for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
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// Select the col pin to read (active low)
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uint8_t pin = col_pins[col_index];
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uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
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// Populate the matrix row with the state of the col pin
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current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index);
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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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uint8_t pin = row_pins[row];
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_SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
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_SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
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}
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static void unselect_row(uint8_t row)
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{
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uint8_t pin = row_pins[row];
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_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
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_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
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}
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static void unselect_rows(void)
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{
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for(uint8_t x = 0; x < MATRIX_ROWS; x++) {
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uint8_t pin = row_pins[x];
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_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
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_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
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}
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}
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#else // ROW2COL
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static void init_rows(void)
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{
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for(uint8_t x = 0; x < MATRIX_ROWS; x++) {
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uint8_t pin = row_pins[x];
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_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
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_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
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}
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}
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static void read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
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{
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// Select col and wait for col selecton to stabilize
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select_col(current_col);
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wait_us(30);
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// For each row...
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for(uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
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// Select the row pin to read (active low)
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uint8_t pin = row_pins[row_index];
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uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
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// Populate the matrix row with the state of the col pin
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current_matrix[row_index] &= pin_state ? ~(ROW_SHIFTER << current_col) : 0;
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}
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}
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static void select_col(uint8_t col)
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{
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uint8_t pin = col_pins[col];
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_SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
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_SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
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}
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static void unselect_col(uint8_t col)
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{
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uint8_t pin = col_pins[col];
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_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
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_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
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}
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static void unselect_cols(void)
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{
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for(uint8_t x = 0; x < MATRIX_COLS; x++) {
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uint8_t pin = col_pins[x];
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_SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
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_SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
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}
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}
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#endif
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