50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/*
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Copyright 2012 Jun Wako <wakojun@gmail.com>
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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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/*
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* scan matrix
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <avr/io.h>
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#include "wait.h"
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#include "print.h"
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#include "debug.h"
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#include "util.h"
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#include "matrix.h"
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#include "split_util.h"
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#include "timer.h"
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// Copy this code to split_common/matrix.c,
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// and call it instead of the unoptimized col_reader. Scan-rate jumps from 1200->1920
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// Also remove the sleep_us(30), not necessary for this keyboard.
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// In usb_descriptor.c, set .PollingIntervalMS = 0x01
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#define ROW_SHIFTER ((uint8_t)1)
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inline static matrix_row_t optimized_col_reader(void) {
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//MATRIX_COL_PINS { B6, B2, B3, B1, F7, F6, F5, F4 }
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return (PINB & (1 << 6) ? 0 : (ROW_SHIFTER << 0)) |
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(PINB & (1 << 2) ? 0 : (ROW_SHIFTER << 1)) |
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(PINB & (1 << 3) ? 0 : (ROW_SHIFTER << 2)) |
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(PINB & (1 << 1) ? 0 : (ROW_SHIFTER << 3)) |
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(PINF & (1 << 7) ? 0 : (ROW_SHIFTER << 4)) |
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(PINF & (1 << 6) ? 0 : (ROW_SHIFTER << 5)) |
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(PINF & (1 << 5) ? 0 : (ROW_SHIFTER << 6)) |
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(PINF & (1 << 4) ? 0 : (ROW_SHIFTER << 7));
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}
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