qmk-dactyl-manuform-a/keyboards/v4n4g0rth0n/v2/keymaps/default/keymap.c

/* Copyright 2021 jpuerto
 *
 * 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 QMK_KEYBOARD_H
#include "analog.h"
int16_t max_pot_val = 1023;
int16_t max_ticks = 20;
int16_t pot_oldVal = 0;
int16_t pot_val    = 0;
bool moving     = false;
#define POT_TOLERANCE 50
#define POT_PIN F0
#include "print.h"


void matrix_init_user(void) {
    analogReference(ADC_REF_POWER);
}

void matrix_scan_user(void){
    pot_val   = (analogReadPin(POT_PIN));

    // If there is a big enough change, then we need to do something
    if (abs(pot_val - pot_oldVal) > POT_TOLERANCE) {
        moving = true;
        pot_oldVal = pot_val;
    }
    else{
        if (moving){
            // Do some fancy conversion to get 'absolute' position to num tap_codes to send
            // Reset moving to 0 so that we don't get multiple attempts to do this
            int num_ticks = ((float)pot_val/max_pot_val)*max_ticks;
            for (int i = 0; i<max_ticks;++i){
                tap_code(KC__VOLDOWN);
            }
            for (int i = 0; i<num_ticks;++i){
                tap_code(KC__VOLUP);
            }
            moving = false;
        }
    }
}

// Defines names for use in layer keycodes and the keymap
enum layer_names {
    _BASE,
    _NUM,
    _FN
};

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
    /* Base */
    [_BASE] = LAYOUT(
        KC_1, KC_2, KC_3, KC_4, KC_5, KC_6,
    KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_BSPC,
    KC_LCTL, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT,
    KC_LCAP, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_UP, KC_SLSH,
    KC_LGUI, MO(_NUM), MO(_FN), KC_SPC, KC_ENT, KC_LEFT, KC_DOWN, KC_RIGHT
    ),
    [_NUM] = LAYOUT(
        KC_1, KC_2, KC_3, KC_4, KC_5, KC_6,
    KC_TAB, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_BSPC,
    KC_LCTL, RESET, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT,
    KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_UP, KC_SLSH,
    RESET, KC_TRNS, KC_TRNS, KC_SPC, KC_ENT, KC_LEFT, KC_DOWN, KC_RIGHT
    ),
    [_FN] = LAYOUT(
        KC_1, KC_2, KC_3, KC_4, KC_5, KC_6,
    KC_TAB, KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_BSPC,
    KC_LCTL, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_MINS, KC_EQL, KC_LCBR, KC_RCBR, KC_PIPE, KC_GRV,
    KC_LSFT, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_UNDS, KC_PLUS, KC_LBRC, KC_RBRC, KC_BSLS, KC_TILD,
    RESET, KC_TRNS, KC_TRNS, KC_SPC, KC_ENT, KC_LEFT, KC_DOWN, KC_RIGHT
    )
};