掌機 - Z-Pocket Game Pro (ZPG Pro) - Read Joystick

main.c

#include <stdio.h>
#include <stdlib.h>
#include <SDL.h>
 
int main(int argc, char **argv)
{
    SDL_Event e;
    SDL_Joystick *joy = NULL;
     
    SDL_Init(SDL_INIT_JOYSTICK);
    joy = SDL_JoystickOpen(0);
 
    int stop = 0;
    while (stop == 0) {
        if (SDL_PollEvent(&e)) {
            switch (e.type) {
            case SDL_JOYBUTTONUP:
                printf("up %d\n", e.jbutton.button);
                break;
            case SDL_JOYBUTTONDOWN:
                printf("down %d\n", e.jbutton.button);
                if(e.jbutton.button == 14){
                    stop = 1;
                }
                break;
            case SDL_JOYAXISMOTION:
                // up-left
                //     (SDL_JoystickGetAxis(joy, 1) < -16384) && (SDL_JoystickGetAxis(joy, 0) < -16384);
                // down-left
                //     (SDL_JoystickGetAxis(joy, 1) > 16384) && (SDL_JoystickGetAxis(joy, 0) < -16384);
                // down-right
                //     (SDL_JoystickGetAxis(joy, 1) > 16384) && (SDL_JoystickGetAxis(joy, 0) > 16384);
                // up-right
                //     (SDL_JoystickGetAxis(joy, 1) < -16384) && (SDL_JoystickGetAxis(joy, 0) > 16384);

                // up
                //     vax = SDL_JoystickGetAxis(joy, 0);
                //     (SDL_JoystickGetAxis(joy, 1) < -16384) && (ABS(vax) < 16384);
                // down
                //     vax = SDL_JoystickGetAxis(joy, 0);
                //     (SDL_JoystickGetAxis(joy, 1) > 16384) && (ABS(vax) < 16384);
                // left
                //     vax = SDL_JoystickGetAxis(joy, 1);
                //     (SDL_JoystickGetAxis(joy, 0) < -16384) && (ABS(vax) < 16384);
                // right
                //     vax = SDL_JoystickGetAxis(joy, 1);
                //     (SDL_JoystickGetAxis(joy, 0) > 16384) && (ABS(vax) < 16384);
                break;
            }
        }
    }
    SDL_JoystickClose(joy);
    SDL_Quit();

    return 0;
}

編譯

$ cd
$ wget https://github.com/steward-fu/website/releases/download/zpg-pro/toolchain-x64.tar.gz
$ tar xvf toolchain-x64.tar.gz
$ sudo mv gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu /opt/zpg-sdk
$ export PATH=$PATH:/opt/zpg-sdk/bin

$ aarch64-none-linux-gnu-gcc main.c -o main -lSDL2 -lSDL2_image -I/opt/zpg-sdk/aarch64-none-linux-gnu/include/SDL2 -Wl,-rpath-link=/opt/zpg-sdk/aarch64-none-linux-gnu/lib/pulseaudio -Wl,-rpath-link=/opt/zpg-sdk/aarch64-none-linux-gnu/lib