joystick_testid.c

#include <SDL2/SDL.h>

void list_joysticks();

int main(void) { 
    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
    int sdl_flags = SDL_INIT_JOYSTICK;
    int is_running = 1;

    SDL_Init(sdl_flags);
    SDL_Event event;
    while(is_running == 1)
    {
        while(SDL_PollEvent(&event)) {
            switch(event.type)
            {
                case SDL_JOYDEVICEADDED:
                    SDL_Log("Joystick device %d added.\n", (int) event.jdevice.which);
                    list_joysticks();
                    break;
                case SDL_JOYDEVICEREMOVED:
                    SDL_Log("Joystick device %d removed.\n", (int) event.jdevice.which);
                    list_joysticks();
                    break;
                case SDL_QUIT:
                    is_running = 0;
                    break;
                default:
                    break;
            }
        }
    }

    SDL_Log("Closing application\n");
    SDL_Quit();
    SDL_Log("Bye.\n");
    return 0;
}

void
list_joysticks(void)
{
    for (Uint8 i=0; i < SDL_NumJoysticks(); i++)
        SDL_Log("JoyID: %d - Name: %s\n", i, SDL_JoystickNameForIndex(i));
}

output.txt

INFO: Joystick device 0 added.
INFO: JoyID: 0 - Name: Gasia Co.,Ltd PS(R) Gamepad
INFO: JoyID: 1 - Name: Gasia Co.,Ltd PS(R) Gamepad Motion Sensors
INFO: JoyID: 2 - Name: Xbox One S Controller
INFO: JoyID: 3 - Name: Sony Interactive Entertainment Wireless Controller
INFO: Joystick device 1 added.
INFO: JoyID: 0 - Name: Gasia Co.,Ltd PS(R) Gamepad
INFO: JoyID: 1 - Name: Gasia Co.,Ltd PS(R) Gamepad Motion Sensors
INFO: JoyID: 2 - Name: Xbox One S Controller
INFO: JoyID: 3 - Name: Sony Interactive Entertainment Wireless Controller
INFO: Joystick device 2 added.
INFO: JoyID: 0 - Name: Gasia Co.,Ltd PS(R) Gamepad
INFO: JoyID: 1 - Name: Gasia Co.,Ltd PS(R) Gamepad Motion Sensors
INFO: JoyID: 2 - Name: Xbox One S Controller
INFO: JoyID: 3 - Name: Sony Interactive Entertainment Wireless Controller
INFO: Joystick device 3 added.
INFO: JoyID: 0 - Name: Gasia Co.,Ltd PS(R) Gamepad
INFO: JoyID: 1 - Name: Gasia Co.,Ltd PS(R) Gamepad Motion Sensors
INFO: JoyID: 2 - Name: Xbox One S Controller
INFO: JoyID: 3 - Name: Sony Interactive Entertainment Wireless Controller
INFO: Joystick device 2 removed.
INFO: JoyID: 0 - Name: Gasia Co.,Ltd PS(R) Gamepad
INFO: JoyID: 1 - Name: Gasia Co.,Ltd PS(R) Gamepad Motion Sensors
INFO: JoyID: 2 - Name: Sony Interactive Entertainment Wireless Controller
INFO: Joystick device 3 added.
INFO: JoyID: 0 - Name: Gasia Co.,Ltd PS(R) Gamepad
INFO: JoyID: 1 - Name: Gasia Co.,Ltd PS(R) Gamepad Motion Sensors
INFO: JoyID: 2 - Name: Sony Interactive Entertainment Wireless Controller
INFO: JoyID: 3 - Name: Xbox One S Controller
INFO: Joystick device 4 removed.
INFO: JoyID: 0 - Name: Gasia Co.,Ltd PS(R) Gamepad
INFO: JoyID: 1 - Name: Gasia Co.,Ltd PS(R) Gamepad Motion Sensors
INFO: JoyID: 2 - Name: Sony Interactive Entertainment Wireless Controller
INFO: Joystick device 3 added.
INFO: JoyID: 0 - Name: Gasia Co.,Ltd PS(R) Gamepad
INFO: JoyID: 1 - Name: Gasia Co.,Ltd PS(R) Gamepad Motion Sensors
INFO: JoyID: 2 - Name: Sony Interactive Entertainment Wireless Controller
INFO: JoyID: 3 - Name: Xbox One S Controller
INFO: Joystick device 5 removed.
INFO: JoyID: 0 - Name: Gasia Co.,Ltd PS(R) Gamepad
INFO: JoyID: 1 - Name: Gasia Co.,Ltd PS(R) Gamepad Motion Sensors
INFO: JoyID: 2 - Name: Sony Interactive Entertainment Wireless Controller
INFO: Joystick device 3 added.
INFO: JoyID: 0 - Name: Gasia Co.,Ltd PS(R) Gamepad
INFO: JoyID: 1 - Name: Gasia Co.,Ltd PS(R) Gamepad Motion Sensors
INFO: JoyID: 2 - Name: Sony Interactive Entertainment Wireless Controller
INFO: JoyID: 3 - Name: Xbox One S Controller
INFO: Joystick device 6 removed.
INFO: JoyID: 0 - Name: Gasia Co.,Ltd PS(R) Gamepad
INFO: JoyID: 1 - Name: Gasia Co.,Ltd PS(R) Gamepad Motion Sensors
INFO: JoyID: 2 - Name: Sony Interactive Entertainment Wireless Controller
INFO: Joystick device 3 added.
INFO: JoyID: 0 - Name: Gasia Co.,Ltd PS(R) Gamepad
INFO: JoyID: 1 - Name: Gasia Co.,Ltd PS(R) Gamepad Motion Sensors
INFO: JoyID: 2 - Name: Sony Interactive Entertainment Wireless Controller
INFO: JoyID: 3 - Name: Xbox One S Controller