forked from forks/qmk_firmware
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
// Copyright 2023 QMK
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "matrix.h"
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static matrix_row_t read_row(uint8_t row) {
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matrix_io_delay(); // without this wait read unstable value.
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// keypad and program buttons
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if (row == 12) {
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return ~(readPin(B4) | (readPin(B5) << 1) | 0b11111100);
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}
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return ~(readPin(B6) | readPin(B2) << 1 | readPin(B3) << 2 | readPin(B1) << 3 | readPin(F7) << 4 | readPin(F6) << 5 | readPin(F5) << 6 | readPin(F4) << 7);
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}
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static void unselect_rows(void) {
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// set A,B,C,G to 0
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PORTD &= 0xF0;
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}
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static void select_rows(uint8_t row) {
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// set A,B,C,G to row value
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PORTD |= (0x0F & row);
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}
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void matrix_init_custom(void) {
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// output low (multiplexers)
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setPinOutput(D0);
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setPinOutput(D1);
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setPinOutput(D2);
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setPinOutput(D3);
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// input with pullup (matrix)
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setPinInputHigh(B6);
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setPinInputHigh(B2);
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setPinInputHigh(B3);
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setPinInputHigh(B1);
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setPinInputHigh(F7);
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setPinInputHigh(F6);
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setPinInputHigh(F5);
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setPinInputHigh(F4);
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// input with pullup (program and keypad buttons)
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setPinInputHigh(B4);
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setPinInputHigh(B5);
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// initialize row and col
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unselect_rows();
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}
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bool matrix_scan_custom(matrix_row_t current_matrix[]) {
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bool matrix_has_changed = false;
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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select_rows(i);
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matrix_row_t row = read_row(i);
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unselect_rows();
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bool row_has_changed = current_matrix[i] != row;
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matrix_has_changed |= row_has_changed;
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current_matrix[i] = row;
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}
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return matrix_has_changed;
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}
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