#include QMK_KEYBOARD_H #define SHIFT_DOWN() (get_mods() & (MOD_BIT(KC_LSFT)|MOD_BIT(KC_RSFT))) #define KC_FKEYS MO(FKEYS) // Layers enum { BASE=0, SYMNUM, // Symbols and numbers (activated by holding enter) FKEYS, // Function keys (activated by a thumb button) }; // counter that increments on all key press events. This is needed for our LT // handling uint16_t press_counter = 0; const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = { // Keymap 0: Base layer [BASE] = LAYOUT_ergodox( // left hand --------------------------------------------------------------------------------------------------- KC_NO, KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_NO, KC_GRV, KC_QUOT, KC_COMM, KC_DOT, KC_P, KC_Y, KC_LGUI, KC_SLSH, KC_A, KC_O, KC_E, KC_U, KC_I, KC_LSFT, KC_SCLN, KC_Q, KC_J, KC_K, KC_X, KC_HOME, KC_LCTL, KC_LALT, KC_PGUP, KC_PGDN, KC_NO, // left thumb -------------------------------------------------------------------------------------------------- KC_NO, KC_NO, KC_NO, KC_SPC, KC_TAB, KC_FKEYS, // right hand -------------------------------------------------------------------------------------------------- KC_NO, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_NO, KC_RGUI, KC_F, KC_G, KC_C, KC_R, KC_L, KC_BSLS, KC_D, KC_H, KC_T, KC_N, KC_S, KC_MINS, KC_END, KC_B, KC_M, KC_W, KC_V, KC_Z, KC_RSFT, KC_LEFT, KC_UP, KC_DOWN, KC_RIGHT, KC_RCTL, // right thumb ------------------------------------------------------------------------------------------------- KC_NO, KC_NO, KC_NO, KC_DEL, KC_BSPC, KC_ENT ), // SYMNUM -- numpad and function keys [SYMNUM] = LAYOUT_ergodox( // left hand --------------------------------------------------------------------------------------------------- KC_TRNS, LALT(KC_1), LALT(KC_2), LALT(KC_3), LALT(KC_4), LALT(KC_5), KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_AMPR, KC_TRNS, KC_TRNS, KC_TRNS, KC_LCBR, KC_LBRC, KC_LPRN, KC_0, KC_MINS, KC_TRNS, KC_6, KC_7, KC_8, KC_9, KC_SLSH, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, // left thumb -------------------------------------------------------------------------------------------------- KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, // right hand -------------------------------------------------------------------------------------------------- KC_TRNS, LALT(KC_6), LALT(KC_7), LALT(KC_8), LALT(KC_9), LALT(KC_0), KC_TRNS, KC_TRNS, KC_PERC, KC_EQL, KC_LT, KC_GT, KC_EXLM, KC_TRNS, KC_PLUS, KC_1, KC_RPRN, KC_RBRC, KC_RCBR, KC_TRNS, KC_TRNS, KC_ASTR, KC_2, KC_3, KC_4, KC_5, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, // right thumb ------------------------------------------------------------------------------------------------- KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS ), // FKEYS -- function keys [FKEYS] = LAYOUT_ergodox( // left hand --------------------------------------------------------------------------------------------------- KC_TRNS, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, // left thumb -------------------------------------------------------------------------------------------------- KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, // right hand -------------------------------------------------------------------------------------------------- KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, // right thumb ------------------------------------------------------------------------------------------------- KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS ), }; // Code to handle layer tap. // // The default code doesn't work for me, so I rolled my own code. The main // difference is that it always tries to send modifier+key combination, rather // than two keys. One place where this is noticable is if you tap the key, // then try hold it. struct tap_start_info { uint16_t timer; uint16_t initial_press_counter; }; static struct tap_start_info tap_start_infos[5]; // Quick check to see if a key is down. Note that this requires NKRO enabled static bool key_down(uint8_t code) { return (keyboard_report->nkro.bits[code>>3] & 1<<(code&7)) != 0; } static bool handle_lt(uint16_t keycode, keyrecord_t *record, uint8_t layer, uint8_t index) { struct tap_start_info* tap_start = tap_start_infos + index; if(record->event.pressed) { layer_on(layer); tap_start->timer = timer_read(); tap_start->initial_press_counter = press_counter; } else { layer_off(layer); // Only click the key if: // - No other keys are pressed between the press and release events // - The release happens before the ONESHOT_TIMEOUT if(press_counter == tap_start->initial_press_counter && timer_elapsed(tap_start->timer) < ONESHOT_TIMEOUT) { register_code16(keycode); unregister_code16(keycode); } } return false; } static bool handle_mt(uint16_t keycode, keyrecord_t *record, uint8_t mods, uint8_t index) { struct tap_start_info* tap_start = tap_start_infos + index; if(record->event.pressed) { register_mods(mods); tap_start->timer = timer_read(); tap_start->initial_press_counter = press_counter; } else { unregister_mods(mods); // Only click the key if: // - No other keys are pressed between the press and release events // - The release happens before the ONESHOT_TIMEOUT if(press_counter == tap_start->initial_press_counter && timer_elapsed(tap_start->timer) < ONESHOT_TIMEOUT) { register_code16(keycode); unregister_code16(keycode); } } return false; } bool process_record_user(uint16_t keycode, keyrecord_t *record) { if(record->event.pressed) { press_counter++; // The symbol layer allows sequences repeat the same "physical" key. // For example "0)", which is like pressing the "0" key twice in a // row. It's very easy to make a sequence of these where the ")" // press comes before the "0" release. If that happens, force a // release of the "0" key, otherwise nothing will happen. uint8_t shortcode = keycode & 0xFF; if(key_down(shortcode)) { unregister_code(shortcode); } } switch(keycode) { case KC_ENTER: return handle_lt(keycode, record, SYMNUM, 0); case KC_TAB: return handle_mt(keycode, record, MOD_BIT(KC_LCTL), 1); case KC_LSFT: case KC_RSFT: return handle_mt(KC_ESC, record, MOD_BIT(keycode), 2); } return true; }