You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
220 lines
6.5 KiB
220 lines
6.5 KiB
/*
|
|
Copyright 2017-2019 Mathias Andersson <wraul@dbox.se>
|
|
|
|
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>
|
|
#include "wait.h"
|
|
#include "print.h"
|
|
#include "debug.h"
|
|
#include "util.h"
|
|
#include "matrix.h"
|
|
#include "debounce.h"
|
|
#include "quantum.h"
|
|
|
|
#if (MATRIX_COLS <= 8)
|
|
# define print_matrix_header() print("\nr/c 01234567\n")
|
|
# define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
|
|
# define matrix_bitpop(i) bitpop(matrix[i])
|
|
# define ROW_SHIFTER ((uint8_t)1)
|
|
#elif (MATRIX_COLS <= 16)
|
|
# define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
|
|
# define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
|
|
# define matrix_bitpop(i) bitpop16(matrix[i])
|
|
# define ROW_SHIFTER ((uint16_t)1)
|
|
#elif (MATRIX_COLS <= 32)
|
|
# define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
|
|
# define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
|
|
# define matrix_bitpop(i) bitpop32(matrix[i])
|
|
# define ROW_SHIFTER ((uint32_t)1)
|
|
#endif
|
|
|
|
static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
|
|
static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
|
|
|
|
/* matrix state(1:on, 0:off) */
|
|
static matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
|
|
static matrix_row_t matrix[MATRIX_ROWS]; // debounced values
|
|
|
|
__attribute__((weak)) void matrix_init_quantum(void) { matrix_init_kb(); }
|
|
|
|
__attribute__((weak)) void matrix_scan_quantum(void) { matrix_scan_kb(); }
|
|
|
|
__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) {}
|
|
|
|
inline uint8_t matrix_rows(void) { return MATRIX_ROWS; }
|
|
|
|
inline uint8_t matrix_cols(void) { return MATRIX_COLS; }
|
|
|
|
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_matrix_header();
|
|
|
|
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
|
|
print_hex8(row);
|
|
print(": ");
|
|
print_matrix_row(row);
|
|
print("\n");
|
|
}
|
|
}
|
|
|
|
uint8_t matrix_key_count(void) {
|
|
uint8_t count = 0;
|
|
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
|
count += matrix_bitpop(i);
|
|
}
|
|
return count;
|
|
}
|
|
|
|
/* Columns 0 - 15
|
|
* These columns uses two 74HC237D 3 to 8 bit demultiplexers.
|
|
* col / pin: PB6 PC6 PC7 PF1 PF0
|
|
* 0: 0 1 0 0 0
|
|
* 1: 0 1 0 0 1
|
|
* 2: 0 1 0 1 0
|
|
* 3: 0 1 0 1 1
|
|
* 4: 0 1 1 0 0
|
|
* 5: 0 1 1 0 1
|
|
* 6: 0 1 1 1 0
|
|
* 7: 0 1 1 1 1
|
|
* 8: 1 0 0 0 0
|
|
* 9: 1 0 0 0 1
|
|
* 10: 1 0 0 1 0
|
|
* 11: 1 0 0 1 1
|
|
* 12: 1 0 1 0 0
|
|
* 13: 1 0 1 0 1
|
|
* 14: 1 0 1 1 0
|
|
* 15: 1 0 1 1 1
|
|
*
|
|
* col: 16
|
|
* pin: PB5
|
|
*/
|
|
static void unselect_cols(void) {
|
|
for (uint8_t x = 0; x < 6; x++) {
|
|
setPinOutput(col_pins[x]);
|
|
writePinLow(col_pins[x]);
|
|
}
|
|
}
|
|
|
|
static void select_col(uint8_t col) {
|
|
if (col < 16) {
|
|
uint8_t c = col + 8;
|
|
|
|
writePin(B6, c & 0b10000);
|
|
writePin(C6, c & 0b01000);
|
|
writePin(C7, c & 0b00100);
|
|
writePin(F1, c & 0b00010);
|
|
writePin(F0, c & 0b00001);
|
|
} else {
|
|
writePinHigh(B5);
|
|
}
|
|
}
|
|
|
|
/* Row pin configuration
|
|
* row: 0 1 2 3 4 5
|
|
* pin: D0 D1 D2 D3 D5 B7
|
|
*
|
|
* Caps lock uses its own pin E2
|
|
*/
|
|
static void init_pins(void) {
|
|
unselect_cols();
|
|
for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
|
|
setPinInputHigh(row_pins[x]);
|
|
}
|
|
|
|
setPinInputHigh(E2);
|
|
}
|
|
|
|
static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
|
|
bool matrix_changed = false;
|
|
|
|
// Select col and wait for col selecton to stabilize
|
|
select_col(current_col);
|
|
wait_us(30);
|
|
|
|
// For each row...
|
|
for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
|
|
// Store last value of row prior to reading
|
|
matrix_row_t last_row_value = current_matrix[row_index];
|
|
|
|
// Check row pin state
|
|
// Use the otherwise unused row: 3, col: 0 for caps lock
|
|
if (row_index == 3 && current_col == 0) {
|
|
if (readPin(E2) == 0) {
|
|
// Pin LO, set col bit
|
|
current_matrix[row_index] |= (ROW_SHIFTER << current_col);
|
|
} else {
|
|
// Pin HI, clear col bit
|
|
current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
|
|
}
|
|
} else {
|
|
if (readPin(row_pins[row_index]) == 0) {
|
|
// Pin HI, clear col bit
|
|
current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
|
|
} else {
|
|
// Pin LO, set col bit
|
|
current_matrix[row_index] |= (ROW_SHIFTER << current_col);
|
|
}
|
|
}
|
|
|
|
// Determine if the matrix changed state
|
|
if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) {
|
|
matrix_changed = true;
|
|
}
|
|
}
|
|
|
|
// Unselect cols
|
|
unselect_cols();
|
|
|
|
return matrix_changed;
|
|
}
|
|
|
|
void matrix_init(void) {
|
|
// initialize key pins
|
|
init_pins();
|
|
|
|
// initialize matrix state: all keys off
|
|
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
|
raw_matrix[i] = 0;
|
|
matrix[i] = 0;
|
|
}
|
|
|
|
debounce_init(MATRIX_ROWS);
|
|
|
|
matrix_init_quantum();
|
|
}
|
|
|
|
uint8_t matrix_scan(void) {
|
|
bool changed = false;
|
|
|
|
for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
|
|
changed |= read_rows_on_col(raw_matrix, current_col);
|
|
}
|
|
|
|
debounce(raw_matrix, matrix, MATRIX_ROWS, changed);
|
|
|
|
matrix_scan_quantum();
|
|
|
|
return (uint8_t)changed;
|
|
}
|