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qmk_firmware/quantum/split_common/matrix.c
2019-07-23 09:11:37 -04:00

334 lines
8.5 KiB
C

/*
Copyright 2012 Jun Wako <wakojun@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 "wait.h"
#include "util.h"
#include "matrix.h"
#include "split_util.h"
#include "config.h"
#include "quantum.h"
#include "debounce.h"
#include "transport.h"
#ifdef ENCODER_ENABLE
#include "encoder.h"
#endif
#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
#define ERROR_DISCONNECT_COUNT 5
#define ROWS_PER_HAND (MATRIX_ROWS / 2)
#ifdef DIRECT_PINS
static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
#else
static pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
static pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
#endif
/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t raw_matrix[ROWS_PER_HAND];
// row offsets for each hand
uint8_t thisHand, thatHand;
// user-defined overridable functions
__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) {}
__attribute__((weak)) void matrix_slave_scan_user(void) {}
// helper functions
inline uint8_t matrix_rows(void) { return MATRIX_ROWS; }
inline uint8_t matrix_cols(void) { return MATRIX_COLS; }
bool matrix_is_modified(void) {
if (debounce_active()) 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_matrix_header();
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
phex(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;
}
// 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) {
matrix_row_t last_row_value = current_matrix[current_row];
current_matrix[current_row] = 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_matrix[current_row] |= readPin(pin) ? 0 : (ROW_SHIFTER << col_index);
}
}
return (last_row_value != current_matrix[current_row]);
}
#elif (DIODE_DIRECTION == COL2ROW)
static void select_row(uint8_t row) {
setPinOutput(row_pins[row]);
writePinLow(row_pins[row]);
}
static void unselect_row(uint8_t row) { setPinInputHigh(row_pins[row]); }
static void unselect_rows(void) {
for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
setPinInputHigh(row_pins[x]);
}
}
static void init_pins(void) {
unselect_rows();
for (uint8_t x = 0; x < MATRIX_COLS; x++) {
setPinInputHigh(col_pins[x]);
}
}
static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
// Store last value of row prior to reading
matrix_row_t last_row_value = current_matrix[current_row];
// Clear data in matrix row
current_matrix[current_row] = 0;
// Select row and wait for row selecton to stabilize
select_row(current_row);
wait_us(30);
// For each col...
for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
// Populate the matrix row with the state of the col pin
current_matrix[current_row] |= readPin(col_pins[col_index]) ? 0 : (ROW_SHIFTER << col_index);
}
// Unselect row
unselect_row(current_row);
return (last_row_value != current_matrix[current_row]);
}
#elif (DIODE_DIRECTION == ROW2COL)
static void select_col(uint8_t col) {
setPinOutput(col_pins[col]);
writePinLow(col_pins[col]);
}
static void unselect_col(uint8_t col) { setPinInputHigh(col_pins[col]); }
static void unselect_cols(void) {
for (uint8_t x = 0; x < MATRIX_COLS; x++) {
setPinInputHigh(col_pins[x]);
}
}
static void init_pins(void) {
unselect_cols();
for (uint8_t x = 0; x < ROWS_PER_HAND; x++) {
setPinInputHigh(row_pins[x]);
}
}
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 < ROWS_PER_HAND; row_index++) {
// Store last value of row prior to reading
matrix_row_t last_row_value = current_matrix[row_index];
// Check row pin state
if (readPin(row_pins[row_index])) {
// 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 col
unselect_col(current_col);
return matrix_changed;
}
#endif
void matrix_init(void) {
debug_enable = true;
debug_matrix = true;
debug_mouse = true;
// Set pinout for right half if pinout for that half is defined
if (!isLeftHand) {
#ifdef MATRIX_ROW_PINS_RIGHT
const pin_t row_pins_right[MATRIX_ROWS] = MATRIX_ROW_PINS_RIGHT;
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
row_pins[i] = row_pins_right[i];
}
#endif
#ifdef MATRIX_COL_PINS_RIGHT
const pin_t col_pins_right[MATRIX_COLS] = MATRIX_COL_PINS_RIGHT;
for (uint8_t i = 0; i < MATRIX_COLS; i++) {
col_pins[i] = col_pins_right[i];
}
#endif
}
thisHand = isLeftHand ? 0 : (ROWS_PER_HAND);
thatHand = ROWS_PER_HAND - thisHand;
// initialize key pins
init_pins();
// initialize matrix state: all keys off
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
matrix[i] = 0;
}
debounce_init(ROWS_PER_HAND);
matrix_init_quantum();
}
uint8_t _matrix_scan(void) {
bool changed = false;
#if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
// Set row, read cols
for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; 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
debounce(raw_matrix, matrix + thisHand, ROWS_PER_HAND, changed);
return (uint8_t)changed;
}
uint8_t matrix_scan(void) {
uint8_t ret = _matrix_scan();
if (is_keyboard_master()) {
static uint8_t error_count;
if (!transport_master(matrix + thatHand)) {
error_count++;
if (error_count > ERROR_DISCONNECT_COUNT) {
// reset other half if disconnected
for (int i = 0; i < ROWS_PER_HAND; ++i) {
matrix[thatHand + i] = 0;
}
}
} else {
error_count = 0;
}
matrix_scan_quantum();
} else {
transport_slave(matrix + thisHand);
#ifdef ENCODER_ENABLE
encoder_read();
#endif
matrix_slave_scan_user();
}
return ret;
}