ESP32 Forum

Code: Select all

int load_ROM(char* filename){
    FILE* fp = fopen(filename, "rb");
    
    if(fp == NULL) return errno;

    struct stat st;
    stat(filename, &st);
    size_t fsize = st.st_size;

    size_t bytes_read = fread(memory + 0x200, 1, sizeof(memory) - 0x200, fp);

    if(bytes_read != fsize){
        return -1;
    }

    fclose(fp);
    
    return 0;
}[code]



[code]void chipmain(){

    esp_vfs_spiffs_conf_t conf = {
    .base_path = "/spiffs",
    .partition_label = NULL,
    .max_files = 5,
    .format_if_mount_failed = true
     };

     esp_err_t ret = esp_vfs_spiffs_register(&conf);

      if (ret != ESP_OK) {
        if (ret == ESP_FAIL) {
            printf("Failed to mount or format filesystem\n");
            vTaskDelay(250);
        } else if (ret == ESP_ERR_NOT_FOUND) {
            printf("Failed to find SPIFFS partition\n");
            vTaskDelay(250);
        } else {
            printf("Failed to initialize SPIFFS (%s)\n", esp_err_to_name(ret));
            vTaskDelay(250);
        }
        return;
      }

      size_t total = 0, used = 0;
      ret = esp_spiffs_info(conf.partition_label,&total,&used);
      if(ret != ESP_OK){
          printf("Failed to get SPIFFS partition information (%s)\n", esp_err_to_name(ret));
      }
      else{
          printf("Partition size: total: %d, used: %d\n", total, used);
      }
    

    printf("[PENDING] Initializing CHIP-8 arch...\n");
    gprintf("[PENDING] Initializing CHIP-8 arch...\n");

    init_CPU();
    printf("[OK!] Done!\n");
    gprintf("[OK!] Done!\n");

    char* rom_filename = "/spiffs/test_opcode.ch8";//need to sort this location stuff.
    printf("[PENDING] Loading rom %s...\n",rom_filename);

    int status = load_ROM(rom_filename);

    if(status == -1){
        printf("FAILURE fread() failure: the return value was not = to the rom file size.\n");
        vTaskDelay(250);
        exit(1);
        //return 1;
    }

    else if(status !=0){
        perror("Error while loading rom!\n");
        vTaskDelay(250);
        exit(1);
       // return 1;
    }

    printf("[OK] Rom loaded!\n");

    //graphics_init();//init_display(); Might not be needed since i do this in main but lets do it
    printf("[OK] Display Online!\n");
    
    while(1){
        cls(0);//the cycle is handling the frame stuff so maybe it doesn't need to be in here
        emulate_cycle();
        //something something keypad

     /*    if(shoud_quit()){
            break;
        } */

        if(draw_flag){
            draw(display);
        }
        flip_frame();
        usleep(1500);
    }
    flip_frame();
    vTaskDelay(500/portTICK_PERIOD_MS);
    while(get_input());
    while(get_input()!=RIGHT_DOWN)
    vTaskDelay(1);
    //return 0;
}