You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
2.3 KiB
68 lines
2.3 KiB
/*
|
|
* Copyright 2018 Jack Humbert <jack.humb@gmail.com>
|
|
*
|
|
* 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/>.
|
|
*/
|
|
|
|
#include "encoder.h"
|
|
#include "quantum.h"
|
|
|
|
#ifndef ENCODER_RESOLUTION
|
|
#define ENCODER_RESOLUTION 4
|
|
#endif
|
|
|
|
#if !defined(ENCODERS_PAD_A) || !defined(ENCODERS_PAD_B)
|
|
#error "No encoder pads defined by ENCODERS_PAD_A and ENCODERS_PAD_B"
|
|
#endif
|
|
|
|
static LINE_TYPE encoders_pad_a[NUMBER_OF_ENCODERS] = ENCODERS_PAD_A;
|
|
static LINE_TYPE encoders_pad_b[NUMBER_OF_ENCODERS] = ENCODERS_PAD_B;
|
|
|
|
static int8_t encoder_LUT[] = { 0, -1, 1, 0, 1, 0, 0, -1, -1, 0, 0, 1, 0, 1, -1, 0 };
|
|
|
|
static uint8_t encoder_state[NUMBER_OF_ENCODERS] = {0};
|
|
static int8_t encoder_value[NUMBER_OF_ENCODERS] = {0};
|
|
|
|
__attribute__ ((weak))
|
|
void encoder_update_user(int8_t index, bool clockwise) { }
|
|
|
|
__attribute__ ((weak))
|
|
void encoder_update_kb(int8_t index, bool clockwise) {
|
|
encoder_update_user(index, clockwise);
|
|
}
|
|
|
|
void encoder_init(void) {
|
|
for (int i = 0; i < NUMBER_OF_ENCODERS; i++) {
|
|
setPadMode(encoders_pad_a[i], PAD_MODE_INPUT);
|
|
setPadMode(encoders_pad_b[i], PAD_MODE_INPUT);
|
|
|
|
encoder_state[i] = (readPad(encoders_pad_a[i]) << 0) | (readPad(encoders_pad_b[i]) << 1);
|
|
}
|
|
}
|
|
|
|
void encoder_read(void) {
|
|
for (int i = 0; i < NUMBER_OF_ENCODERS; i++) {
|
|
encoder_state[i] <<= 2;
|
|
encoder_state[i] |= (readPad(encoders_pad_a[i]) << 0) | (readPad(encoders_pad_b[i]) << 1);
|
|
encoder_value[i] += encoder_LUT[encoder_state[i] & 0xF];
|
|
if (encoder_value[i] >= ENCODER_RESOLUTION) {
|
|
encoder_update_kb(i, COUNTRECLOCKWISE);
|
|
}
|
|
if (encoder_value[i] <= -ENCODER_RESOLUTION) { // direction is arbitrary here, but this clockwise
|
|
encoder_update_kb(i, CLOCKWISE);
|
|
}
|
|
encoder_value[i] %= ENCODER_RESOLUTION;
|
|
}
|
|
}
|