forked from forks/qmk_firmware
77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
/*
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Copyright 2018 Massdrop Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "alt.h"
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#include "d51_util.h"
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const uint8_t row_ports[] = {MATRIX_ROW_PORTS};
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const uint8_t row_pins[] = {MATRIX_ROW_PINS};
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const uint8_t col_ports[] = {MATRIX_COL_PORTS};
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const uint8_t col_pins[] = {MATRIX_COL_PINS};
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uint32_t row_masks[2]; // NOTE: If more than PA PB used in the future, adjust code to accommodate
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void matrix_init_custom(void) {
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row_masks[PA] = 0;
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row_masks[PB] = 0;
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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PORT->Group[row_ports[row]].DIRCLR.reg = 1 << row_pins[row]; // Input
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PORT->Group[row_ports[row]].OUTCLR.reg = 1 << row_pins[row]; // Low
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PORT->Group[row_ports[row]].PINCFG[row_pins[row]].bit.INEN = 1; // Input Enable,
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PORT->Group[row_ports[row]].PINCFG[row_pins[row]].bit.PULLEN = 1; // Pull Enable
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row_masks[row_ports[row]] |= 1 << row_pins[row]; // Add pin to proper row mask
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}
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for (uint8_t col = 0; col < MATRIX_COLS; col++) {
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PORT->Group[col_ports[col]].DIRSET.reg = 1 << col_pins[col]; // Output
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PORT->Group[col_ports[col]].OUTCLR.reg = 1 << col_pins[col]; // Low
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}
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}
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bool matrix_scan_custom(matrix_row_t current_matrix[]) {
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matrix_row_t raw[MATRIX_ROWS] = {0};
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uint32_t scans[2]; // PA PB
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for (uint8_t col = 0; col < MATRIX_COLS; col++) {
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PORT->Group[col_ports[col]].OUTSET.reg = 1 << col_pins[col]; // Set col output
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matrix_io_delay(); // Delay for output
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scans[PA] = PORT->Group[PA].IN.reg & row_masks[PA]; // Read PA row pins data
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scans[PB] = PORT->Group[PB].IN.reg & row_masks[PB]; // Read PB row pins data
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PORT->Group[col_ports[col]].OUTCLR.reg = 1 << col_pins[col]; // Clear col output
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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// Move scan bits from scans array into proper row bit locations
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if (scans[row_ports[row]] & (1 << row_pins[row])) {
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raw[row] |= 1 << col;
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}
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}
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}
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bool changed = false;
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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if (current_matrix[row] != raw[row]) {
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current_matrix[row] = raw[row];
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changed = true;
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}
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}
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return changed;
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}
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