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/* Copyright 2020 Christopher Courtney, aka Drashna Jael're (@drashna) <drashna@live.com>
* Copyright 2020 Ploopy Corporation
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stdint.h>
#ifndef SCROLLER_AR_SIZE
# define SCROLLER_AR_SIZE 31
#endif
#ifndef SCROLL_THRESH_RANGE_LIM
# define SCROLL_THRESH_RANGE_LIM 10
#endif
void opt_encoder_init(void);
/* Return the rotation direction, positive value means clockwise, negative value
* means counter-clockwise */
int8_t opt_encoder_handler(uint16_t curA, uint16_t curB);
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