5 (art-pi)怎样利用屏幕显示的gui组件调用rtthread studio工程中定义的函数？

发布于 2023-07-17 14:27:39 浏览：468 订阅该版

1 个回答

xiaorui 认证专家 2023-07-18

小睿手办 https://item.taobao.com/item.htm?id=674889867009

楼主，在art_pi_net_player 例程里面的 js_mp3.c 文件中，有部分代码可以直接参考使用的，主要就是C 端和 JS 端的数据交互，可以参考音乐播放示例，自定义一个模块。
```
jerry_value_t js_player_init(void)
{
    jerry_value_t js_song;

js_song = jerry_create_object();

REGISTER_METHOD_ALIAS(js_song, start, js_player_start_hdl);
    REGISTER_METHOD_ALIAS(js_song, pause, js_player_pause_hdl);
    REGISTER_METHOD_ALIAS(js_song, next, js_player_next_hdl);
    REGISTER_METHOD_ALIAS(js_song, prev, js_player_prev_hdl);
    REGISTER_METHOD_ALIAS(js_song, getname, js_player_getname_hdl);
    REGISTER_METHOD_ALIAS(js_song, gettime, js_player_gettime_hdl);
    REGISTER_METHOD_ALIAS(js_song, setvolume, js_player_setvolume_hdl);
    REGISTER_METHOD_ALIAS(js_song, getvolume, js_player_getvolume_hdl);
    REGISTER_METHOD_ALIAS(js_song, getsource, js_player_getsource_hdl);
    REGISTER_METHOD_ALIAS(js_song, setsource, js_player_setsource_hdl);
    REGISTER_METHOD_ALIAS(js_song, getplaymode, js_player_getplaymode_hdl);
    REGISTER_METHOD_ALIAS(js_song, setplaymode, js_player_setplaymode_hdl);

js_message_obj = js_song;
    js_make_emitter(js_message_obj, jerry_create_undefined());
    js_set_pointer_property(js_message_obj, "_free_cb", NULL, &js_message_info);

return js_song;
}
JS_MODULE(player, js_player_init);
```
另外还可以参考一下这个文章中柿饼UI C-JS 交互的示例，https://club.rt-thread.org/ask/article/bbf29245bc61f69f.html