mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-11-22 11:29:26 +00:00
131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
// Copyright 2023 Cameron Varley (@RustedAperture)
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
/*
|
|
* scan matrix
|
|
*/
|
|
#include "matrix.h"
|
|
#include <string.h>
|
|
#include "atomic_util.h"
|
|
#include "wait.h"
|
|
#include "print.h"
|
|
#include "debug.h"
|
|
|
|
/* matrix state(1:on, 0:off) */
|
|
extern matrix_row_t matrix[MATRIX_ROWS]; // debounced values
|
|
extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
|
|
|
|
static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
|
|
static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
|
|
#define MATRIX_ROW_SHIFTER ((matrix_row_t)1)
|
|
|
|
static inline void gpio_atomic_set_pin_output_low(pin_t pin) {
|
|
ATOMIC_BLOCK_FORCEON {
|
|
gpio_set_pin_output(pin);
|
|
gpio_write_pin_low(pin);
|
|
}
|
|
}
|
|
|
|
static inline void gpio_atomic_set_pin_output_high(pin_t pin) {
|
|
ATOMIC_BLOCK_FORCEON {
|
|
gpio_set_pin_output(pin);
|
|
gpio_write_pin_high(pin);
|
|
}
|
|
}
|
|
|
|
static inline void gpio_atomic_set_pin_input_high(pin_t pin) {
|
|
ATOMIC_BLOCK_FORCEON {
|
|
gpio_set_pin_input_high(pin);
|
|
}
|
|
}
|
|
|
|
static inline uint8_t readMatrixPin(pin_t pin) {
|
|
if (pin != NO_PIN) {
|
|
return gpio_read_pin(pin);
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static bool select_col(uint8_t col) {
|
|
pin_t pin = col_pins[col];
|
|
if (pin != NO_PIN) {
|
|
gpio_atomic_set_pin_output_low(pin);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void unselect_col(uint8_t col) {
|
|
pin_t pin = col_pins[col];
|
|
if (pin != NO_PIN) {
|
|
# ifdef MATRIX_UNSELECT_DRIVE_HIGH
|
|
gpio_atomic_set_pin_output_high(pin);
|
|
# else
|
|
gpio_atomic_set_pin_input_high(pin);
|
|
# endif
|
|
}
|
|
}
|
|
|
|
static void unselect_cols(void) {
|
|
for (uint8_t x = 0; x < MATRIX_COLS; x++) {
|
|
unselect_col(x);
|
|
}
|
|
}
|
|
|
|
|
|
__attribute__((weak)) void matrix_init_custom(void) {
|
|
unselect_cols();
|
|
for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
|
|
if (row_pins[x] != NO_PIN) {
|
|
gpio_atomic_set_pin_input_high(row_pins[x]);
|
|
}
|
|
}
|
|
gpio_atomic_set_pin_input_high(B8);
|
|
}
|
|
|
|
__attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col, matrix_row_t row_shifter) { // Start with a clear matrix row
|
|
bool key_pressed = false;
|
|
|
|
// Select col
|
|
if (!select_col(current_col)) { // select col
|
|
return; // skip NO_PIN col
|
|
}
|
|
matrix_output_select_delay();
|
|
|
|
// For each row...
|
|
for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
|
|
// Check row pin state
|
|
if (current_col == 3 && row_index == 2 && readMatrixPin(B8) == 1) {
|
|
current_matrix[row_index] |= row_shifter;
|
|
key_pressed = !readMatrixPin(B8);
|
|
} else if (readMatrixPin(row_pins[row_index]) == 0) {
|
|
// Pin LO, set col bit
|
|
current_matrix[row_index] |= row_shifter;
|
|
key_pressed = true;
|
|
} else {
|
|
// Pin HI, clear col bit
|
|
current_matrix[row_index] &= ~row_shifter;
|
|
}
|
|
}
|
|
|
|
// Unselect col
|
|
unselect_col(current_col);
|
|
matrix_output_unselect_delay(current_col, key_pressed); // wait for all Row signals to go HIGH
|
|
}
|
|
|
|
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
|
|
static matrix_row_t temp_matrix[MATRIX_ROWS] = {0};
|
|
|
|
matrix_row_t row_shifter = MATRIX_ROW_SHIFTER;
|
|
for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
|
|
matrix_read_rows_on_col(temp_matrix, current_col, row_shifter);
|
|
}
|
|
|
|
bool changed = memcmp(current_matrix, temp_matrix, sizeof(temp_matrix)) != 0;
|
|
if (changed) {
|
|
memcpy(current_matrix, temp_matrix, sizeof(temp_matrix));
|
|
}
|
|
return changed;
|
|
}
|