mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-12-16 14:43:24 +00:00
118 lines
3.5 KiB
C
118 lines
3.5 KiB
C
|
// Copyright 2023 David Hoelscher (@customMK)
|
||
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
#include "quantum.h"
|
||
|
|
||
|
// Pin definitions
|
||
|
static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
|
||
|
|
||
|
void matrix_wait_for_pin(pin_t pin, uint8_t target_state) {
|
||
|
rtcnt_t start = chSysGetRealtimeCounterX();
|
||
|
rtcnt_t end = start + 5000;
|
||
|
while (chSysIsCounterWithinX(chSysGetRealtimeCounterX(), start, end)) {
|
||
|
if (readPin(pin) == target_state) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void matrix_wait_for_port(stm32_gpio_t *port, uint32_t target_bitmask) {
|
||
|
rtcnt_t start = chSysGetRealtimeCounterX();
|
||
|
rtcnt_t end = start + 5000;
|
||
|
while (chSysIsCounterWithinX(chSysGetRealtimeCounterX(), start, end)) {
|
||
|
if ((palReadPort(port) & target_bitmask) == target_bitmask) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void shift_pulse_clock(void) {
|
||
|
writePinHigh(COL_SHIFT_CLK_PIN);
|
||
|
matrix_wait_for_pin(COL_SHIFT_CLK_PIN, 1);
|
||
|
writePinLow(COL_SHIFT_CLK_PIN);
|
||
|
}
|
||
|
|
||
|
void matrix_init_custom(void) {
|
||
|
//set all row pins as input with pullups
|
||
|
for (int i = 0; i < MATRIX_ROWS; ++i) {
|
||
|
writePinHigh(row_pins[i]);
|
||
|
setPinInputHigh(row_pins[i]);
|
||
|
}
|
||
|
|
||
|
//set all column pins high in ROW2COL matrix
|
||
|
setPinOutput(COL_SHIFT_IN_PIN);
|
||
|
setPinOutput(COL_SHIFT_CLK_PIN);
|
||
|
writePinHigh(COL_SHIFT_IN_PIN);
|
||
|
matrix_wait_for_pin(COL_SHIFT_IN_PIN, 1);
|
||
|
|
||
|
for (int i = 0; i < MATRIX_COLS; ++i) {
|
||
|
shift_pulse_clock();
|
||
|
}
|
||
|
|
||
|
}
|
||
|
|
||
|
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
|
||
|
static matrix_row_t temp_matrix[MATRIX_ROWS] = {0};
|
||
|
|
||
|
writePinLow(COL_SHIFT_IN_PIN);
|
||
|
matrix_wait_for_pin(COL_SHIFT_IN_PIN, 0);
|
||
|
|
||
|
// Setup the output column pin
|
||
|
shift_pulse_clock();
|
||
|
|
||
|
writePinHigh(COL_SHIFT_IN_PIN);
|
||
|
for (int current_col = 0; current_col < MATRIX_COLS; ++current_col) {
|
||
|
|
||
|
// Read the column ports
|
||
|
uint32_t gpio_a = palReadPort(GPIOA);
|
||
|
uint32_t gpio_b = palReadPort(GPIOB);
|
||
|
|
||
|
// row 0, pin A8
|
||
|
int current_row = 0;
|
||
|
if ((gpio_a & (1 << 8)) >> 8) {
|
||
|
temp_matrix[current_row] &= ~(1ul << current_col);
|
||
|
} else {
|
||
|
temp_matrix[current_row] |= (1ul << current_col);
|
||
|
}
|
||
|
// row 1, pin A1
|
||
|
current_row = 1;
|
||
|
if ((gpio_a & (1 << 1)) >> 1) {
|
||
|
temp_matrix[current_row] &= ~(1ul << current_col);
|
||
|
} else {
|
||
|
temp_matrix[current_row] |= (1ul << current_col);
|
||
|
}
|
||
|
// row 2, pin A2
|
||
|
current_row = 2;
|
||
|
if ((gpio_a & (1 << 2)) >> 2) {
|
||
|
temp_matrix[current_row] &= ~(1ul << current_col);
|
||
|
} else {
|
||
|
temp_matrix[current_row] |= (1ul << current_col);
|
||
|
}
|
||
|
// row 3, pin B3
|
||
|
current_row = 3;
|
||
|
if ((gpio_b & (1 << 1)) >> 1) {
|
||
|
temp_matrix[current_row] &= ~(1ul << current_col);
|
||
|
} else {
|
||
|
temp_matrix[current_row] |= (1ul << current_col);
|
||
|
}
|
||
|
// row 4, pin A7
|
||
|
current_row = 4;
|
||
|
if ((gpio_a & (1 << 7)) >> 7) {
|
||
|
temp_matrix[current_row] &= ~(1ul << current_col);
|
||
|
} else {
|
||
|
temp_matrix[current_row] |= (1ul << current_col);
|
||
|
}
|
||
|
|
||
|
// Setup the output column pin
|
||
|
shift_pulse_clock();
|
||
|
|
||
|
}
|
||
|
|
||
|
// Check if matrix has changed, return the last-read data
|
||
|
bool changed = memcmp(current_matrix, temp_matrix, sizeof(temp_matrix)) != 0;
|
||
|
if (changed) {
|
||
|
memcpy(current_matrix, temp_matrix, sizeof(temp_matrix));
|
||
|
}
|
||
|
shift_pulse_clock();
|
||
|
return changed;
|
||
|
}
|