retroacrh joypad

pi@retropie:/opt/retropie/configs/all/retroarch-joypads $ sudo nano 8Bitdo\ Zero\ GamePad.cfg
  GNU nano 2.2.6         File: 8Bitdo Zero GamePad.cfg

input_device = "8Bitdo Zero GamePad"
input_driver = "udev"
input_l_btn = "6"
input_load_state_btn = "6"
input_start_btn = "11"
input_exit_emulator_btn = "11"
input_up_axis = "-1"
input_a_btn = "0"
input_b_btn = "1"
input_reset_btn = "1"
input_down_axis = "+1"
input_r_btn = "7"
input_save_state_btn = "7"
input_right_axis = "+0"
input_state_slot_increase_axis = "+0"
input_x_btn = "3"
input_menu_toggle_btn = "3"
input_select_btn = "10"
input_enable_hotkey_btn = "10"