[PATCH] Add lvgl_hello: Sample Hello world app using littleVGL and libbsd

[Vijay Kumar Banerjee]

On Tue, Sep 3, 2019 at 5:15 AM Chris Johns <chrisj at rtems.org> wrote:

> On 3/9/19 4:56 am, Vijay Kumar Banerjee wrote:
> >         > +void
> >         > +libbsdhelper_start_shell(rtems_task_priority prio)
> >         > +{
> >         > +     rtems_status_code sc = rtems_shell_init(
> >         > +             "SHLL",
> >         > +             STACK_SIZE_SHELL,
> >         > +             prio,
> >         > +             CONSOLE_DEVICE_NAME,
> >         > +             false,
> >         > +             true,
> >         > +             NULL
> >         > +     );
> >         > +     assert(sc == RTEMS_SUCCESSFUL);
> >         > +}
> >         > +
> >         > +static void
> >         > +Init(rtems_task_argument arg)
> >         > +{
> >         > +     rtems_status_code sc;
> >         > +     int exit_code;
> >         > +     (void)arg;
> >         > +     static lv_color_t buf[LV_HOR_RES_MAX*10];
> >         > +     static lv_disp_buf_t disp_buf;
> >         > +
> >         > +     puts("\nRTEMS I2C TEST\n");
> >         > +     exit_code = bbb_register_i2c_0();
> >         > +     assert(exit_code == 0);
> >
> >         Is this needed for the display to work?
> >
> >     Yes. We need to register the rtems i2c device in order to work with
> the TDA
> >     driver
> >     as libbsd uses rtems i2c driver. The bbb_register_* is making it bbb
> >     specific, what
> >     do you suggest to make it more generic?
> >
> > A good reference I could find is in:
> > https://git.rtems.org/rtems/tree/testsuites/libtests/i2c01/init.c#n534
> >
> > Should I do something like this in the lvgl example?
>
> I am sorry, I do not understand what you are asking with the link to that
> test.
>
> Sorry for not being clear in the question.
In the i2c01 test that the link points to, i2c_bus_register API has been
used
and the transfer, set_clock and destroy functions are defined as static in
the
program itself.
I was asking if I can add the transfer, set_clock functions in my example
and
make an i2c_bus_register call.

> Chris
>
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