204 lines
7.0 KiB
C
204 lines
7.0 KiB
C
/*
|
|
* 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
|