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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/*
* 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"
// this is for unit testing
#if defined(ENCODER_MOCK_SINGLE)
# include "encoder/tests/mock.h"
#elif defined(ENCODER_MOCK_SPLIT)
# include "encoder/tests/mock_split.h"
#else
# include <gpio.h>
# ifdef SPLIT_KEYBOARD
# include "split_util.h"
# endif
#endif
// for memcpy
#include <string.h>
#if !defined(ENCODER_RESOLUTIONS) && !defined(ENCODER_RESOLUTION)
# define ENCODER_RESOLUTION 4
#endif
#if (!defined(ENCODERS_PAD_A) || !defined(ENCODERS_PAD_B)) && (!defined(ENCODERS_PAD_A) || !defined(ENCODERS_PAD_B))
# error "No encoder pads defined by ENCODERS_PAD_A and ENCODERS_PAD_B or ENCODERS_PAD_A_RIGHT and ENCODERS_PAD_B_RIGHT"
#endif
// on split keyboards, these are the pads and resolutions for the left half
static pin_t encoders_pad_a[] = ENCODERS_PAD_A;
static pin_t encoders_pad_b[] = ENCODERS_PAD_B;
#ifdef ENCODER_RESOLUTIONS
static uint8_t encoder_resolutions[] = ENCODER_RESOLUTIONS;
#endif
#ifndef SPLIT_KEYBOARD
# define NUMBER_OF_ENCODERS (sizeof(encoders_pad_a) / sizeof(pin_t))
#else
// if no pads for right half are defined, we assume the keyboard is symmetric (i.e. same pads)
# ifndef ENCODERS_PAD_A_RIGHT
# define ENCODERS_PAD_A_RIGHT ENCODERS_PAD_A
# endif
# ifndef ENCODERS_PAD_B_RIGHT
# define ENCODERS_PAD_B_RIGHT ENCODERS_PAD_B
# endif
# if defined(ENCODER_RESOLUTIONS) && !defined(ENCODER_RESOLUTIONS_RIGHT)
# define ENCODER_RESOLUTIONS_RIGHT ENCODER_RESOLUTIONS
# endif
# define NUMBER_OF_ENCODERS ((sizeof(encoders_pad_a) + sizeof(encoders_pad_a_right)) / sizeof(pin_t))
# define NUMBER_OF_ENCODERS_LEFT (sizeof(encoders_pad_a) / sizeof(pin_t))
# define NUMBER_OF_ENCODERS_RIGHT (sizeof(encoders_pad_a_right) / sizeof(pin_t))
static pin_t encoders_pad_a_right[] = ENCODERS_PAD_A_RIGHT;
static pin_t encoders_pad_b_right[] = ENCODERS_PAD_B_RIGHT;
# ifdef ENCODER_RESOLUTIONS_RIGHT
static uint8_t encoder_resolutions_right[] = ENCODER_RESOLUTIONS_RIGHT;
# endif
#endif
#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};
static uint8_t encoder_value[NUMBER_OF_ENCODERS] = {0};
__attribute__((weak)) bool encoder_update_user(uint8_t index, bool clockwise) { return true; }
__attribute__((weak)) bool encoder_update_kb(uint8_t index, bool clockwise) { return encoder_update_user(index, clockwise); }
// number of encoders connected to this controller
static uint8_t numEncodersHere;
// index of the first encoder connected to this controller (only for right halves, this will be nonzero)
static uint8_t firstEncoderHere;
#ifdef SPLIT_KEYBOARD
// index of the first encoder connected to the other half
static uint8_t firstEncoderThere;
#endif
// the pads for this controller
static pin_t* pad_a;
static pin_t* pad_b;
void encoder_init(void) {
#ifndef SPLIT_KEYBOARD
numEncodersHere = NUMBER_OF_ENCODERS;
pad_a = encoders_pad_a;
pad_b = encoders_pad_b;
firstEncoderHere = 0;
#else
if (isLeftHand) {
numEncodersHere = NUMBER_OF_ENCODERS_LEFT;
pad_a = encoders_pad_a;
pad_b = encoders_pad_b;
firstEncoderHere = 0;
firstEncoderThere = NUMBER_OF_ENCODERS_LEFT;
} else {
numEncodersHere = NUMBER_OF_ENCODERS_RIGHT;
pad_a = encoders_pad_a_right;
pad_b = encoders_pad_b_right;
firstEncoderHere = NUMBER_OF_ENCODERS_LEFT;
firstEncoderThere = 0;
}
#endif
for (int i = 0; i < numEncodersHere; i++) {
setPinInputHigh(pad_a[i]);
setPinInputHigh(pad_b[i]);
encoder_state[firstEncoderHere + i] = (readPin(pad_a[i]) << 0) | (readPin(pad_b[i]) << 1);
}
}
static bool encoder_update(int8_t index, uint8_t state) {
bool changed = false;
#ifdef ENCODER_RESOLUTIONS
# ifndef SPLIT_KEYBOARD
int8_t resolution = encoder_resolutions[index];
# else
int8_t resolution = isLeftHand ? encoder_resolutions[index] : encoder_resolutions_right[index - NUMBER_OF_ENCODERS_LEFT];
# endif
#else
uint8_t resolution = ENCODER_RESOLUTION;
#endif
encoder_pulses[index] += encoder_LUT[state & 0xF];
if (encoder_pulses[index] >= resolution) {
encoder_value[index]++;
changed = true;
encoder_update_kb(index, ENCODER_COUNTER_CLOCKWISE);
}
if (encoder_pulses[index] <= -resolution) { // direction is arbitrary here, but this clockwise
encoder_value[index]--;
changed = true;
encoder_update_kb(index, ENCODER_CLOCKWISE);
}
encoder_pulses[index] %= resolution;
#ifdef ENCODER_DEFAULT_POS
if ((state & 0x3) == ENCODER_DEFAULT_POS) {
encoder_pulses[index] = 0;
}
#endif
return changed;
}
bool encoder_read(void) {
bool changed = false;
for (uint8_t i = 0; i < numEncodersHere; i++) {
encoder_state[firstEncoderHere + i] <<= 2;
encoder_state[firstEncoderHere + i] |= (readPin(pad_a[i]) << 0) | (readPin(pad_b[i]) << 1);
changed |= encoder_update(firstEncoderHere + i, encoder_state[firstEncoderHere + i]);
}
return changed;
}
#ifdef SPLIT_KEYBOARD
void last_encoder_activity_trigger(void);
void encoder_state_raw(uint8_t* slave_state) { memcpy(slave_state, &encoder_value[firstEncoderHere], sizeof(uint8_t) * numEncodersHere); }
void encoder_update_raw(uint8_t* slave_state) {
bool changed = false;
for (uint8_t i = 0; i < NUMBER_OF_ENCODERS - numEncodersHere; i++) {
uint8_t index = firstEncoderThere + i;
int8_t delta = slave_state[i] - encoder_value[index];
while (delta > 0) {
delta--;
encoder_value[index]++;
changed = true;
encoder_update_kb(index, ENCODER_COUNTER_CLOCKWISE);
}
while (delta < 0) {
delta++;
encoder_value[index]--;
changed = true;
encoder_update_kb(index, ENCODER_CLOCKWISE);
}
}
// Update the last encoder input time -- handled external to encoder_read() when we're running a split
if (changed) last_encoder_activity_trigger();
}
#endif
|
