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README
AGPL-3.0

ComponentsLib

介绍

基于新唐N9H30硬件平台,RTThread+LVGL软件平台的便携式器件库存管理系统。LVGL嵌入式GUI挑战赛作品。

下图为设想的最终使用场景图,把系统想办法固定在器件柜旁边,方便管理和查找器件。(由于还没有开发完成,所以临时胶固示意一下)

系统架构

如下为主要的系统框架图

已实现的主要功能

  • 基于LVGL的UI

    • 用户登录界面

    • 用户管理界面

    • 器件检索界面

    • 器件管理界面

    • 系统设置界面

  • 文件系统,存放图片和数据库资源文件

  • 绑定DFS虚拟文件系统到LVGL的文件操作接口

  • 注册JPEG软件解码器到LVGL,实现从SD卡加载图片

  • SQLite数据库管理

    • 用户表

    • 器件表

  • 显示屏背光的亮度调节,定时无操作自动熄屏,触碰触摸屏唤醒

  • 通过终端串口命令实现的更丰富的数据库操作功能(未链接到UI)

  • 通过终端串口命令实现的excel文件导入数据库功能

尚未完成功能

  • 更丰富合理的用户管理功能

    • 通过网络授权用户注册

    • 用户登录、操作日志

  • 更丰富的器件管理功能

    • 通过网络远程管理
  • 优化UI,使其效率更高,更优雅

  • 加入中文支持

  • ...

开发过程与关键点记录

  1. 基于RT-Thread新建工程

    详见我之前在RT-Thread论坛发布过的测试文章:RT-Thread-N9H30开发板开箱测试RT-Thread问答社区 - RT-Thread

  2. 新建自己的user_gui源文件和头文件。并把用户UI界面的代码接口,加入到lv_demo.c内的lvgl_thread函数内。屏蔽所有的DEMO宏。

    static void lvgl_thread(void *parameter)
    {
    #if LV_USE_DEMO_BENCHMARK
        extern void lv_demo_benchmark(void);
        lv_demo_benchmark();
    #endif
    #if LV_USE_DEMO_WIDGETS
        extern void lv_demo_widgets(void);
    #endif
    #if LV_USE_DEMO_MUSIC || LV_USE_DEMO_RTT_MUSIC
        extern void lv_demo_music(void);
        lv_demo_music();
    #endif
        rt_thread_delay(1000);
        user_gui_init();      //用户代码接口
        while (1)
        {
            lv_task_handler();
            rt_thread_mdelay(1);
        }
    }
  3. user_gui_init()中调用lv_fs_posix_init()函数,绑定文件系统操作接口

    RT-Thread提供的开发包,已经适配好了DFS虚拟文件系统。这里只需要和LVGL的文件操作接口对接即可。

  4. user_gui_init()中调用lv_split_jpeg_init()函数,注册JPEG软解码器到LVGL

    这里主要就是链接了lv_sjpg.c内的decoder_info,decoder_open,decoder_close,decoder_read_line函数接口到LVGL的解码器列表。在加载文件系统内的JPEG图片的时候,LVGL会自动查找匹配的解码器进行解码。另外,需要注意的是,在LVGL的文件系统接口下,文件路径前面要加上“S:”。当然,此标识符可以通过lv_conf.h内的#define CONFIG_LV_FS_POSIX_LETTER 'S'宏定义任意修改,默认的是“S”

  5. 加入SQLite数据库支持

    首先在RT-Thread Studio中,搜索并加入SQLite软件包。

    具体配置如下:

    开启example,会有例程代码加入到工程。然后就可以仿照例程代码,实现自己具体的功能了。我这里新建了sysdatabase的源文件和头文件,盛放数据库相关的操作代码。实现如下的create_sysdb_table()函数。并在user_gui_init()的最开始进行调用。判断是否有数据库文件,如果有,是否有对应的数据库表。如果没有则创建数据库和建立需要的数据库表。

    void create_sysdb_table(void)
    {
        int fd = 0, res;
        db_set_name(SYSDB_NAME);
        fd = open(db_get_name(), O_RDONLY);
        if (fd < 0)
        {
            LOG_I("database:%s cant open,wile create it!\r\n",db_get_name());
            /* there is not the .db file.create db and table */
            sprintf(sql_str,"CREATE TABLE %s(id INTEGER PRIMARY KEY AUTOINCREMENT,name varchar(32) NOT NULL,password varchar(32) NOT NULL);",USER_TABLE_NAME);
            res = db_create_database(sql_str);
            if(res == SQLITE_OK || res == SQLITE_DONE)
            {
               LOG_I("%s has created!\r\n", USER_TABLE_NAME);
            }
            else {
                LOG_E("%s cant created!\r\n", USER_TABLE_NAME);
            }
            sprintf(sql_str,"CREATE TABLE %s(id INTEGER PRIMARY KEY AUTOINCREMENT,name varchar(32) NOT NULL,package varchar(32),type varchar(32),box INT NOT NULL,count INT NOT NULL);",CHIP_TABLE_NAME);
            res = db_create_database(sql_str);
            if(res == SQLITE_OK || res == SQLITE_DONE)
            {
               LOG_I("%s has created!\r\n", CHIP_TABLE_NAME);
            }
            else {
                LOG_E("%s cant created!\r\n", CHIP_TABLE_NAME);
            }
        }
        else
        {
            close(fd);
            if(db_table_is_exist(USER_TABLE_NAME) > 0)
            {
                LOG_I("%s has already existed!\r\n", USER_TABLE_NAME);
            }
            else {
                /* there is not the table int db.create the table */
                sprintf(sql_str,"CREATE TABLE %s(id INTEGER PRIMARY KEY AUTOINCREMENT,name varchar(32) NOT NULL,password varchar(32) NOT NULL);",USER_TABLE_NAME);
                res = db_create_database(sql_str);
                if(res == SQLITE_OK || res == SQLITE_DONE)
                {
                   LOG_I("%s has created!\r\n", USER_TABLE_NAME);
                }
                else {
                    LOG_E("%s cant created!\r\n", USER_TABLE_NAME);
                }
            }
            if(db_table_is_exist(CHIP_TABLE_NAME) > 0)
            {
                LOG_I("%s has already existed!\r\n", CHIP_TABLE_NAME);
            }
            else {
                /* there is not the table int db.create the table */
                sprintf(sql_str,"CREATE TABLE %s(id INTEGER PRIMARY KEY AUTOINCREMENT,name varchar(32) NOT NULL,package varchar(32),type varchar(32),box INT NOT NULL,count INT NOT NULL);",CHIP_TABLE_NAME);
                res = db_create_database(sql_str);
                if(res == SQLITE_OK || res == SQLITE_DONE)
                {
                   LOG_I("%s has created!\r\n", CHIP_TABLE_NAME);
                }
                else {
                    LOG_E("%s cant created!\r\n", CHIP_TABLE_NAME);
                }
            }
        }
    }

    更多数据库相关的操作代码,请查看gitee上传的源码。

  6. 具体UI的实现

    具体UI,一共实现了5个界面。当然,其中的设置界面还没有完成。这5个界面的实现,我这里尝试了两种方法。上级分了用户登录,用户注册和系统功能三个主界面。这级用的是自己定义的三个obj,承载三个界面内容,然后通过hidden属性实现了三个界面的切换。然后在系统功能界面下,用tileview控件实现了器件检索,器件管理和系统设置三个界面。实践出真知,经过实测感觉确实还是用tilewiew控件实现界面的切换更为方便,简洁。后续可以全部用tilewiew实现。

    至于具体的UI实现,无非就是操作LVGL的不同控件,实现对应的功能。而不同控件的使用介绍,我前期学习LVGL的时候提交过一些学习笔记。这里不再赘述,有兴趣的可以直接看源码。

功能展示与介绍

下面以图文形式对目前实现的主要功能做一个展示

  • 下图是用户登录界面

    用户名和登录密码的label控件,用图标美化了一下。后面的按钮以及其它的几个界面都还没来得及去美化,暂时先用文字验证功能。这里的小图标是用LVGL官网的取模工具,转换成了user_img.cpassword_img.c然后加入到工程内部的方式实现的。每个文件254KB,不是很大。用这种方式实现的加载图片应该是速度最快的,只不过图片文件会最终编译到可执行文件内部,占用代码存储空间。所以背景图片就没用这种方式,因为800x480的图片,转换成'.c'文件后基本要二三十兆字节大小。实在是过于庞大。如果还想多加几张背景图做切换的话,直接就把SPI Flash撑爆了。这里的背景图片,是在LVGL中注册了一个软件JPEG解码器,用JPEG解码器对文件系统内的jpg文件进行加载和解码,然后显示。右下角的刷新率和CPU占用率的显示框,暂时没有关闭,在右下角也妨碍功能,还可以实时监视一下运行情况。而且还稍微修改了一下背景透明度,让其在白背景下显示的更清楚一些。

  • 点击用户名输入框后,会弹出键盘,以便输入用户名。下方还会弹出列表框,显示目前存在的用户名,以供直接选择。可以上下滑动查找,也可以输入关键字符,缩小查找范围。

  • 如下是点击“register”按钮后,跳转到的用户管理界面。测试了一下注册新用户的功能。在‘user’输入框中输入'wer'的测试用户名。在'pwd'和'repwd'内分别输入密码和确认密码。这里故意把确认密码输入错误,然后点击‘OK’按钮,会弹出警示框,提示确认输入的用户名和密码是否正确。

  • 如下是故意把管理员密码输入错误后的提示信息

  • 如果全部输入正确的话,点击“OK”按钮,就会成功注册新用户。然后在用户登录界面输入正确的用户名和密码,点击“login”按钮,就可以成功登录了。登录后,会自动跳转到如下的器件检索界面。上侧为一个检索输入框。下面为一个列表框,加载数据库中的数据。如下是我提前用excel导入的测试数据。

  • 在检索框中输入关键字,可以缩小检索范围,如下图,输入"stm"关键字后,下面的列表框就会显示包含“stm”的器件名。这里不区分大小写,而且是全名称模糊匹配,名称中间或结尾包含关键字也会被检索到。

  • 上下滑动列表框可以浏览所有的数据。如下随便选取第一个“STM32G030K6T6”的芯片做测试,常按这一行数据列表,就会转到如下的器件管理界面。此界面可以对此器件的所有信息进行修改,或直接删除。也可长按表头,进入器件管理界面进行器件添加入库等操作。

  • 下图为随便输入一个封装名称,点击“OK”按钮,测试修改信息的功能。会弹出信息框,要求确认操作。再次点击“OK”按钮,确认修改。

  • 再次弹出信息框,提示已经修改成功了。点击“OK”按钮关闭即可。

  • 如下图,是测试的删除功能。点击“Delete”按钮,同样也会弹出确认框。

  • 确认后,提示删除成功。

  • 返回器件检索界面后,可以看到,器件列表的第一个器件变成了“STM32F030F4P6”了。原来的“STM32G030K6T6”已经成功从数据库中删除了。

  • 最后再看一下系统设置界面。这里目前只有一个用户退出登录的按钮。其它功能还未添加进来。在器件检索界面,向上滑动,即可滑到此界面。点击“logout”按钮,即可退出登录,返回用户登录界面。10分钟无任何操作,也会自动退出登录,返回用户登录界面,并且关闭屏幕背光。触控触摸屏任何部位,会再次唤醒屏幕。

大概的功能就演示到这里,其它的功能操作基本和上面的差不多。还有一些功能没来得及完善。也可以点击下面的链接,观看功能演示视频:

https://www.bilibili.com/video/BV1Ka411N7A6?spm_id_from=333.999.0.0&vd_source=143082a01c512169c40eb84df2924c9d

参与贡献

  1. 源码开源

    链接:ComponentsLib: 基于新唐N9H30硬件平台,RTThread+LVGL软件平台的便携式器件库存管理系统。LVGL嵌入式GUI挑战赛作品。

  2. LVGL学习笔记的分享

  3. 官方问题的发现与解决

    1. 新唐N9H30开发板适配的触摸屏驱动容易误触发的问题:

      RT-Thread-N9H30 HMI开发板触摸屏误触发问题,及解决办法RT-Thread问答社区 - RT-Thread

      也感谢官方对此方法的认可:

    2. 官方anim的lv_example_anim_3()例程,存在BUG,一运行就崩溃。我在对应的日志中也提出了简易的解决办法。

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Also add information on how to contact you by electronic and paper mail. If your software can interact with users remotely through a computer network, you should also make sure that it provides a way for users to get its source. For example, if your program is a web application, its interface could display a "Source" link that leads users to an archive of the code. There are many ways you could offer source, and different solutions will be better for different programs; see section 13 for the specific requirements. You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU AGPL, see <http://www.gnu.org/licenses/>.

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基于新唐N9H30硬件平台,RTThread+LVGL软件平台的便携式器件库存管理系统。LVGL嵌入式GUI挑战赛作品。 展开 收起
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