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39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
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/* Copyright 2020 sekigon-gonnoc
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*
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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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*
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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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*
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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 EC switch matrix using 74HC7051
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// Define MUX_SEL_PINS, DISCHARGE_PIN, and ANALOG_PORT to compile
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//
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#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#include "matrix.h"
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typedef struct {
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uint16_t low_threshold; // threshold for key release
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uint16_t high_threshold; // threshold for key press
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} ecsm_config_t;
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int ecsm_init(ecsm_config_t const* const ecsm_config);
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bool ecsm_matrix_scan(matrix_row_t current_matrix[]);
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void ecsm_print_matrix(void);
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uint16_t ecsm_readkey_raw(uint8_t row, uint8_t col);
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bool ecsm_update_key(matrix_row_t* current_row, uint8_t col, uint16_t sw_value);
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