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/* Copyright 2019 Ethan Durrant (emdarcher)
*
* 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
typedef struct {
bool is_press_action;
int state;
} tap;
//tap dance states
enum {
SINGLE_TAP = 1,
SINGLE_HOLD = 2,
DOUBLE_TAP = 3,
TRIPLE_TAP = 4
};
//tap dance keys
enum {
TAPPY_KEY = 0
};
//function to handle all the tap dances
int cur_dance(tap_dance_state_t *state);
//functions for each tap dance
void tk_finished(tap_dance_state_t *state, void *user_data);
void tk_reset(tap_dance_state_t *state, void *user_data);
#define INDICATOR_LED B5
#define TX_LED D5
#define RX_LED B0
#define _FN0 1
#define _ML1 2
#define _CL0 3
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
[0] = LAYOUT(/* Base */
TD(TAPPY_KEY),KC_HOME, KC_PGUP,
KC_DEL, KC_END, KC_PGDN,
KC_UP,
KC_LEFT, KC_DOWN, KC_RIGHT),
[_FN0] = LAYOUT(/* function layer */
KC_TRNS, KC_PAUS, KC_VOLU,
KC_ENTER, KC_SCRL, KC_VOLD,
KC_TRNS,
KC_TRNS, KC_TRNS, KC_TRNS),
[_ML1] = LAYOUT(/* media function layer on double tap */
KC_TRNS, KC_TRNS, KC_VOLU,
KC_MUTE, KC_TRNS, KC_VOLD,
KC_SPC,
KC_MRWD, KC_MPLY, KC_MFFD),
[_CL0] = LAYOUT(/* control layer on single tap */
KC_TRNS, KC_TRNS, KC_TRNS,
KC_TRNS, KC_TRNS, KC_TRNS,
LCTL(KC_UP),
LCTL(KC_LEFT), LCTL(KC_DOWN), LCTL(KC_RIGHT) ),
};
void matrix_init_user(void) {
//init the Pro Micro on-board LEDs
setPinOutput(TX_LED);
setPinOutput(RX_LED);
//set to off
writePinHigh(TX_LED);
writePinHigh(RX_LED);
}
//determine the current tap dance state
int cur_dance (tap_dance_state_t *state){
if(state->count == 1){
//if a tap was registered
if(!state->pressed){
//if not still pressed, then was a single tap
return SINGLE_TAP;
} else {
//if still pressed/held down, then it's a single hold
return SINGLE_HOLD;
}
} else if(state->count == 2){
//if tapped twice, set to double tap
return DOUBLE_TAP;
} else if(state->count == 3){
//if tapped thrice, set to triple tap
return TRIPLE_TAP;
} else {
return 8;
}
}
//initialize the tap structure for the tap key
static tap tk_tap_state = {
.is_press_action = true,
.state = 0
};
//functions that control what our tap dance key does
void tk_finished(tap_dance_state_t *state, void *user_data){
tk_tap_state.state = cur_dance(state);
switch(tk_tap_state.state){
case SINGLE_TAP:
//toggle desired layer when tapped:
if(layer_state_is(_CL0)){
//if already active, toggle it to off
layer_off(_CL0);
//turn off LEDs
writePinHigh(TX_LED);
writePinHigh(RX_LED);
} else {
//turn on the command layer
layer_on(_CL0);
//turn on the LEDs
writePinLow(TX_LED);
writePinLow(RX_LED);
}
break;
case SINGLE_HOLD:
//set to desired layer when held:
//setting to the function layer
layer_on(_FN0);
break;
case DOUBLE_TAP:
//set to desired layer when double tapped:
//setting to the media layer
if(layer_state_is(_ML1)){
//if already active, toggle it to off
layer_off(_ML1);
//turn off the indicator LED
//set LED HI to turn it off
writePinHigh(INDICATOR_LED);
} else {
//turn on the media layer
layer_on(_ML1);
//turn on the indicator LED
//set LED pin to LOW to turn it on
writePinLow(INDICATOR_LED);
}
break;
case TRIPLE_TAP:
//reset all layers
layer_clear();
//set all LEDs off
writePinHigh(TX_LED);
writePinHigh(RX_LED);
writePinHigh(INDICATOR_LED);
break;
}
}
void tk_reset(tap_dance_state_t *state, void *user_data){
//if held and released, leave the layer
if(tk_tap_state.state == SINGLE_HOLD){
layer_off(_FN0);
}
//reset the state
tk_tap_state.state = 0;
}
//associate the tap dance key with its functionality
tap_dance_action_t tap_dance_actions[] = {
[TAPPY_KEY] = ACTION_TAP_DANCE_FN_ADVANCED(NULL, tk_finished, tk_reset)
};
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