trimmtrabb
Participant
Post count: 480

The file you need to edit is retroarch.cfg in /opt/retropie/configs/all

Here is mine for example, use it as a template. More config options here:
https://github.com/libretro/RetroArch/blob/master/retroarch.cfg

Note ‘joypad_index’, this is the number your gamepad is assigned. Looking at your post above 0 should be right

input_player1_joypad_index = “0” input_player1_b_btn = “1” input_player1_y_btn = “3” input_player1_select_btn = “8” input_player1_start_btn = “9” input_player1_up_axis = “-5” input_player1_down_axis = “+5” input_player1_left_axis = “-4” input_player1_right_axis = “+4” input_player1_a_btn = “0” input_player1_x_btn = “2” input_player1_l_btn = “4” input_player1_r_btn = “5” input_player1_l2_btn = “6” input_player1_r2_btn = “7” input_player1_l3_btn = “11” input_player1_r3_btn = “12” input_player1_l_x_plus_axis = “+0” input_player1_l_x_minus_axis = “-0” input_player1_l_y_plus_axis = “+1” input_player1_l_y_minus_axis = “-1” input_player1_r_x_plus_axis = “+2” input_player1_r_x_minus_axis = “-2” input_player1_r_y_plus_axis = “+3” input_player1_r_y_minus_axis = “-3” input_enable_hotkey_btn = “8” input_exit_emulator_btn = “9” input_enable_hotkey_btn = “8” input_save_state_btn = “5” input_enable_hotkey_btn = “8” input_load_state_btn = “4” input_enable_hotkey_btn = “8” input_state_slot_increase_btn = “7” input_enable_hotkey_btn = “8” input_state_slot_decrease_btn =”6″ input_enable_hotkey_btn = “8” input_menu_toggle_btn = “3”