keychron_qmk_firmware/keyboards/jd45/keymaps/default/keymap.c

#include QMK_KEYBOARD_H

/* this keymap is to provide a basic keyboard layout for testing the matrix
 * for more practical and complicated keymap refer to other keymaps in the same folder
 */

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  [0] = LAYOUT(
    KC_ESC,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_QUOT, KC_BSPC,
    KC_TAB,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN,          KC_ENT,
    KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH,          KC_RSFT,
    KC_PAUS, KC_LCTL, KC_LALT, KC_DEL,           KC_SPC,           KC_DEL,           KC_LEFT, KC_UP,   KC_DOWN, KC_RGHT
  ),
};