1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/*
* 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"
#ifdef SPLIT_KEYBOARD
# include "split_util.h"
#endif
// for memcpy
#include <string.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
#define NUMBER_OF_ENCODERS (sizeof(encoders_pad_a) / sizeof(pin_t))
static pin_t encoders_pad_a[] = ENCODERS_PAD_A;
static pin_t encoders_pad_b[] = ENCODERS_PAD_B;
#ifndef ENCODER_DIRECTION_FLIP
# define ENCODER_CLOCKWISE true
# define ENCODER_COUNTER_CLOCKWISE false
#else
# define ENCODER_CLOCKWISE false
# define ENCODER_COUNTER_CLOCKWISE true
#endif
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_pulses[NUMBER_OF_ENCODERS] = {0};
#ifdef SPLIT_KEYBOARD
// right half encoders come over as second set of encoders
static uint8_t encoder_value[NUMBER_OF_ENCODERS * 2] = {0};
// row offsets for each hand
static uint8_t thisHand, thatHand;
#else
static uint8_t encoder_value[NUMBER_OF_ENCODERS] = {0};
#endif
__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) {
#if defined(SPLIT_KEYBOARD) && defined(ENCODERS_PAD_A_RIGHT) && defined(ENCODERS_PAD_B_RIGHT)
if (!isLeftHand) {
const pin_t encoders_pad_a_right[] = ENCODERS_PAD_A_RIGHT;
const pin_t encoders_pad_b_right[] = ENCODERS_PAD_B_RIGHT;
for (uint8_t i = 0; i < NUMBER_OF_ENCODERS; i++) {
encoders_pad_a[i] = encoders_pad_a_right[i];
encoders_pad_b[i] = encoders_pad_b_right[i];
}
}
#endif
for (int i = 0; i < NUMBER_OF_ENCODERS; i++) {
setPinInputHigh(encoders_pad_a[i]);
setPinInputHigh(encoders_pad_b[i]);
encoder_state[i] = (readPin(encoders_pad_a[i]) << 0) | (readPin(encoders_pad_b[i]) << 1);
}
#ifdef SPLIT_KEYBOARD
thisHand = isLeftHand ? 0 : NUMBER_OF_ENCODERS;
thatHand = NUMBER_OF_ENCODERS - thisHand;
#endif
}
static void encoder_update(int8_t index, uint8_t state) {
uint8_t i = index;
#ifdef SPLIT_KEYBOARD
index += thisHand;
#endif
encoder_pulses[i] += encoder_LUT[state & 0xF];
if (encoder_pulses[i] >= ENCODER_RESOLUTION) {
encoder_value[index]++;
encoder_update_kb(index, ENCODER_COUNTER_CLOCKWISE);
}
if (encoder_pulses[i] <= -ENCODER_RESOLUTION) { // direction is arbitrary here, but this clockwise
encoder_value[index]--;
encoder_update_kb(index, ENCODER_CLOCKWISE);
}
encoder_pulses[i] %= ENCODER_RESOLUTION;
}
void encoder_read(void) {
for (uint8_t i = 0; i < NUMBER_OF_ENCODERS; i++) {
encoder_state[i] <<= 2;
encoder_state[i] |= (readPin(encoders_pad_a[i]) << 0) | (readPin(encoders_pad_b[i]) << 1);
encoder_update(i, encoder_state[i]);
}
}
#ifdef SPLIT_KEYBOARD
void encoder_state_raw(uint8_t* slave_state) { memcpy(slave_state, &encoder_value[thisHand], sizeof(uint8_t) * NUMBER_OF_ENCODERS); }
void encoder_update_raw(uint8_t* slave_state) {
for (uint8_t i = 0; i < NUMBER_OF_ENCODERS; i++) {
uint8_t index = i + thatHand;
int8_t delta = slave_state[i] - encoder_value[index];
while (delta > 0) {
delta--;
encoder_value[index]++;
encoder_update_kb(index, ENCODER_COUNTER_CLOCKWISE);
}
while (delta < 0) {
delta++;
encoder_value[index]--;
encoder_update_kb(index, ENCODER_CLOCKWISE);
}
}
}
#endif
|
