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/* Copyright 2020 Christopher Courtney, aka Drashna Jael're (@drashna) <drashna@live.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 "drashna.h"
#include "analog.h"
#include "pointing_device.h"
#define KC_X0 LT(_FN, KC_ESC)
// clang-format off
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
[_QWERTY] = LAYOUT(
KC_VOLU, KC_MPLY, KC_MPRV, RESET,
KC_VOLD, KC_MUTE, KC_MNXT, RESET
),
};
// clang-format on
// Joystick
// Set Pins
// uint8_t xPin = 8; // VRx / /B4
// uint8_t yPin = 7; // VRy // B5
uint8_t swPin = E6; // SW
// Set Parameters
uint16_t minAxisValue = 0;
uint16_t maxAxisValue = 1023;
uint8_t maxCursorSpeed = 2;
uint8_t precisionSpeed = 1;
uint8_t speedRegulator = 20; // Lower Values Create Faster Movement
int8_t xPolarity = 1;
int8_t yPolarity = 1;
uint8_t cursorTimeout = 10;
int16_t xOrigin, yOrigin;
uint16_t lastCursor = 0;
int16_t axisCoordinate(uint8_t pin, uint16_t origin) {
int8_t direction;
int16_t distanceFromOrigin;
int16_t range;
int16_t position = analogReadPin(pin);
if (origin == position) {
return 0;
} else if (origin > position) {
distanceFromOrigin = origin - position;
range = origin - minAxisValue;
direction = -1;
} else {
distanceFromOrigin = position - origin;
range = maxAxisValue - origin;
direction = 1;
}
float percent = (float)distanceFromOrigin / range;
int16_t coordinate = (int16_t)(percent * 100);
if (coordinate < 0) {
return 0;
} else if (coordinate > 100) {
return 100 * direction;
} else {
return coordinate * direction;
}
}
int8_t axisToMouseComponent(uint8_t pin, int16_t origin, uint8_t maxSpeed, int8_t polarity) {
int coordinate = axisCoordinate(pin, origin);
if (coordinate == 0) {
return 0;
} else {
float percent = (float)coordinate / 100;
if (keyboard_report->mods & MOD_BIT(KC_LSFT)) {
return percent * precisionSpeed * polarity * (abs(coordinate) / speedRegulator);
} else {
return percent * maxCursorSpeed * polarity * (abs(coordinate) / speedRegulator);
}
}
}
void pointing_device_task(void) {
report_mouse_t report = pointing_device_get_report();
// todo read as one vector
if (timer_elapsed(lastCursor) > cursorTimeout) {
lastCursor = timer_read();
report.x = axisToMouseComponent(B4, xOrigin, maxCursorSpeed, xPolarity);
report.y = axisToMouseComponent(B5, yOrigin, maxCursorSpeed, yPolarity);
}
//
if (!readPin(E6)) {
report.buttons |= MOUSE_BTN1;
} else {
report.buttons &= ~MOUSE_BTN1;
}
pointing_device_set_report(report);
pointing_device_send();
}
void matrix_init_keymap(void) {
// init pin? Is needed?
setPinInputHigh(E6);
// Account for drift
xOrigin = analogReadPin(B4);
yOrigin = analogReadPin(B5);
}
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