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.
329 lines
10 KiB
329 lines
10 KiB
/*
|
|
Copyright 2012-2018 Jun Wako, Jack Humbert, Yiancar
|
|
|
|
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 "util.h"
|
|
#include "matrix.h"
|
|
#include "debounce.h"
|
|
#include "quantum.h"
|
|
#ifndef readPort
|
|
# include "gpio_extr.h"
|
|
#endif
|
|
|
|
#ifndef MATRIX_DEBUG_PIN
|
|
# define MATRIX_DEBUG_PIN_INIT()
|
|
# define MATRIX_DEBUG_SCAN_START()
|
|
# define MATRIX_DEBUG_SCAN_END()
|
|
# define MATRIX_DEBUG_DELAY_START()
|
|
# define MATRIX_DEBUG_DELAY_END()
|
|
# define MATRIX_DEBUG_GAP()
|
|
#else
|
|
# define MATRIX_DEBUG_GAP() asm volatile("nop \n nop" ::: "memory")
|
|
#endif
|
|
|
|
#ifndef MATRIX_IO_DELAY_ALWAYS
|
|
# define MATRIX_IO_DELAY_ALWAYS 0
|
|
#endif
|
|
|
|
#ifdef DIRECT_PINS
|
|
static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
|
|
#elif (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
|
|
static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
|
|
static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
|
|
# ifdef MATRIX_MUL_SELECT
|
|
static const pin_t col_sel[MATRIX_COLS] = MATRIX_MUL_SEL;
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef MATRIX_IO_DELAY_PORTS
|
|
static const pin_t delay_ports[] = {MATRIX_IO_DELAY_PORTS};
|
|
static const port_data_t delay_masks[] = {MATRIX_IO_DELAY_MASKS};
|
|
# ifdef MATRIX_IO_DELAY_MULSEL
|
|
static const uint8_t delay_sel[] = {MATRIX_IO_DELAY_MULSEL};
|
|
# endif
|
|
#endif
|
|
|
|
/* matrix state(1:on, 0:off) */
|
|
extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
|
|
extern matrix_row_t matrix[MATRIX_ROWS]; // debounced values
|
|
|
|
static inline void setPinOutput_writeLow(pin_t pin) {
|
|
ATOMIC_BLOCK_FORCEON {
|
|
setPinOutput(pin);
|
|
gpio_write_pin_low(pin);
|
|
}
|
|
}
|
|
|
|
static inline void setPinInputHigh_atomic(pin_t pin) {
|
|
ATOMIC_BLOCK_FORCEON { setPinInputHigh(pin); }
|
|
}
|
|
|
|
// matrix code
|
|
|
|
#ifdef DIRECT_PINS
|
|
|
|
static void init_pins(void) {
|
|
for (int row = 0; row < MATRIX_ROWS; row++) {
|
|
for (int col = 0; col < MATRIX_COLS; col++) {
|
|
pin_t pin = direct_pins[row][col];
|
|
if (pin != NO_PIN) {
|
|
setPinInputHigh(pin);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
|
|
// Start with a clear matrix row
|
|
matrix_row_t current_row_value = 0;
|
|
|
|
for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
|
|
pin_t pin = direct_pins[current_row][col_index];
|
|
if (pin != NO_PIN) {
|
|
current_row_value |= gpio_read_pin(pin) ? 0 : (MATRIX_ROW_SHIFTER << col_index);
|
|
}
|
|
}
|
|
|
|
// If the row has changed, store the row and return the changed flag.
|
|
if (current_matrix[current_row] != current_row_value) {
|
|
current_matrix[current_row] = current_row_value;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
#elif defined(DIODE_DIRECTION)
|
|
# if (DIODE_DIRECTION == COL2ROW)
|
|
|
|
static void select_row(uint8_t row) { setPinOutput_writeLow(row_pins[row]); }
|
|
|
|
static void unselect_row(uint8_t row) { setPinInputHigh_atomic(row_pins[row]); }
|
|
|
|
static void unselect_rows(void) {
|
|
for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
|
|
setPinInputHigh_atomic(row_pins[x]);
|
|
}
|
|
}
|
|
|
|
static void init_pins(void) {
|
|
# ifdef MATRIX_MUL_SELECT
|
|
setPinOutput(MATRIX_MUL_SELECT);
|
|
gpio_write_pin_low(MATRIX_MUL_SELECT);
|
|
# endif
|
|
unselect_rows();
|
|
for (uint8_t x = 0; x < MATRIX_COLS; x++) {
|
|
setPinInputHigh_atomic(col_pins[x]);
|
|
}
|
|
}
|
|
|
|
static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
|
|
// Start with a clear matrix row
|
|
matrix_row_t current_row_value = 0;
|
|
|
|
// Select row
|
|
select_row(current_row);
|
|
matrix_output_select_delay();
|
|
|
|
// For each col...
|
|
for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
|
|
// Select the col pin to read (active low)
|
|
# ifdef MATRIX_MUL_SELECT
|
|
gpio_write_pin(MATRIX_MUL_SELECT, col_sel[col_index]);
|
|
waitInputPinDelay();
|
|
# endif
|
|
uint8_t pin_state = gpio_read_pin(col_pins[col_index]);
|
|
|
|
// Populate the matrix row with the state of the col pin
|
|
current_row_value |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index);
|
|
}
|
|
|
|
// Unselect row
|
|
unselect_row(current_row);
|
|
# ifdef MATRIX_IO_DELAY_PORTS
|
|
if (current_row_value) { // wait for col signal to go HIGH
|
|
bool is_pressed;
|
|
do {
|
|
MATRIX_DEBUG_DELAY_START();
|
|
is_pressed = false;
|
|
for (uint8_t i = 0; i < ARRAY_SIZE(delay_ports); i++) {
|
|
# ifdef MATRIX_IO_DELAY_MULSEL
|
|
gpio_write_pin(MATRIX_MUL_SELECT, delay_sel[i]);
|
|
waitInputPinDelay();
|
|
# endif
|
|
is_pressed |= ((readPort(delay_ports[i]) & delay_masks[i]) != delay_masks[i]);
|
|
}
|
|
MATRIX_DEBUG_DELAY_END();
|
|
} while (is_pressed);
|
|
}
|
|
# endif
|
|
# ifdef MATRIX_IO_DELAY_ADAPTIVE
|
|
if (current_row_value) { // wait for col signal to go HIGH
|
|
for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
|
|
MATRIX_DEBUG_DELAY_START();
|
|
# ifdef MATRIX_MUL_SELECT
|
|
gpio_write_pin(MATRIX_MUL_SELECT, col_sel[col_index]);
|
|
waitInputPinDelay();
|
|
# endif
|
|
while (gpio_read_pin(col_pins[col_index]) == 0) {
|
|
}
|
|
MATRIX_DEBUG_DELAY_END();
|
|
}
|
|
}
|
|
# endif
|
|
# ifdef MATRIX_IO_DELAY_ADAPTIVE2
|
|
if (current_row_value) { // wait for col signal to go HIGH
|
|
pin_t state;
|
|
do {
|
|
MATRIX_DEBUG_DELAY_START();
|
|
state = 0;
|
|
for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
|
|
MATRIX_DEBUG_DELAY_END();
|
|
MATRIX_DEBUG_DELAY_START();
|
|
# ifdef MATRIX_MUL_SELECT
|
|
gpio_write_pin(MATRIX_MUL_SELECT, col_sel[col_index]);
|
|
waitInputPinDelay();
|
|
# endif
|
|
state |= (gpio_read_pin(col_pins[col_index]) == 0);
|
|
}
|
|
MATRIX_DEBUG_DELAY_END();
|
|
} while (state);
|
|
}
|
|
# endif
|
|
if (MATRIX_IO_DELAY_ALWAYS || current_row + 1 < MATRIX_ROWS) {
|
|
MATRIX_DEBUG_DELAY_START();
|
|
matrix_output_unselect_delay(current_row, current_row_value != 0); // wait for col signal to go HIGH
|
|
MATRIX_DEBUG_DELAY_END();
|
|
}
|
|
|
|
// If the row has changed, store the row and return the changed flag.
|
|
if (current_matrix[current_row] != current_row_value) {
|
|
current_matrix[current_row] = current_row_value;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
# elif (DIODE_DIRECTION == ROW2COL)
|
|
|
|
static void select_col(uint8_t col) { setPinOutput_writeLow(col_pins[col]); }
|
|
|
|
static void unselect_col(uint8_t col) { setPinInputHigh_atomic(col_pins[col]); }
|
|
|
|
static void unselect_cols(void) {
|
|
for (uint8_t x = 0; x < MATRIX_COLS; x++) {
|
|
setPinInputHigh_atomic(col_pins[x]);
|
|
}
|
|
}
|
|
|
|
static void init_pins(void) {
|
|
unselect_cols();
|
|
for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
|
|
setPinInputHigh_atomic(row_pins[x]);
|
|
}
|
|
}
|
|
|
|
static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
|
|
bool matrix_changed = false;
|
|
bool key_pressed = false;
|
|
|
|
// Select col
|
|
select_col(current_col);
|
|
matrix_output_select_delay();
|
|
|
|
// 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];
|
|
matrix_row_t current_row_value = last_row_value;
|
|
|
|
// Check row pin state
|
|
if (gpio_read_pin(row_pins[row_index]) == 0) {
|
|
// Pin LO, set col bit
|
|
current_row_value |= (MATRIX_ROW_SHIFTER << current_col);
|
|
key_pressed = true;
|
|
} else {
|
|
// Pin HI, clear col bit
|
|
current_row_value &= ~(MATRIX_ROW_SHIFTER << current_col);
|
|
}
|
|
|
|
// Determine if the matrix changed state
|
|
if ((last_row_value != current_row_value)) {
|
|
matrix_changed |= true;
|
|
current_matrix[row_index] = current_row_value;
|
|
}
|
|
}
|
|
|
|
// Unselect col
|
|
unselect_col(current_col);
|
|
if (MATRIX_IO_DELAY_ALWAYS || current_col + 1 < MATRIX_COLS) {
|
|
matrix_output_unselect_delay(current_col, key_pressed); // wait for col signal to go HIGH
|
|
}
|
|
|
|
return matrix_changed;
|
|
}
|
|
|
|
# else
|
|
# error DIODE_DIRECTION must be one of COL2ROW or ROW2COL!
|
|
# endif
|
|
#else
|
|
# error DIODE_DIRECTION is not defined!
|
|
#endif
|
|
|
|
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_kb();
|
|
}
|
|
|
|
uint8_t matrix_scan(void) {
|
|
bool changed = false;
|
|
MATRIX_DEBUG_PIN_INIT();
|
|
|
|
MATRIX_DEBUG_SCAN_START();
|
|
#if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
|
|
// Set row, read cols
|
|
for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
|
|
changed |= read_cols_on_row(raw_matrix, current_row);
|
|
}
|
|
#elif (DIODE_DIRECTION == ROW2COL)
|
|
// Set col, read rows
|
|
for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
|
|
changed |= read_rows_on_col(raw_matrix, current_col);
|
|
}
|
|
#endif
|
|
MATRIX_DEBUG_SCAN_END();
|
|
MATRIX_DEBUG_GAP();
|
|
|
|
MATRIX_DEBUG_SCAN_START();
|
|
debounce(raw_matrix, matrix, MATRIX_ROWS, changed);
|
|
MATRIX_DEBUG_SCAN_END();
|
|
MATRIX_DEBUG_GAP();
|
|
|
|
MATRIX_DEBUG_SCAN_START();
|
|
matrix_scan_kb();
|
|
MATRIX_DEBUG_SCAN_END();
|
|
return (uint8_t)changed;
|
|
}
|