rafaelcaricio/lvgl-rs
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Add basic API functions

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This commit is contained in:
Rafael Caricio 2021-06-02 01:32:25 +02:00
parent 05d93409dc
commit a6b55e2478
Signed by: rafaelcaricio
GPG key ID: 3C86DBCE8E93C947
1 changed files with 15 additions and 1 deletions
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16
lvgl/src/functions.rs
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@ -1,6 +1,7 @@
use crate::display::{Display, DisplayDriver};
use crate::{Color, Obj, Widget};
use core::ptr::NonNull;
use core::time::Duration;
use core::{ptr, result};
use embedded_graphics::prelude::*;
@ -16,7 +17,7 @@ type Result<T> = result::Result<T, CoreError>;
pub fn disp_drv_register<C: PixelColor + From<Color>, T: DrawTarget<C>>(
disp_drv: &mut DisplayDriver<T, C>,
) -> Result<Display> {
let disp_ptr = unsafe { lvgl_sys::lv_disp_drv_register(disp_drv.disp_drv.as_mut() as *mut _) };
let disp_ptr = unsafe { lvgl_sys::lv_disp_drv_register(&mut disp_drv.disp_drv as *mut _) };
Ok(Display::from_raw(
NonNull::new(disp_ptr).ok_or(CoreError::OperationFailed)?,
))
@ -40,3 +41,16 @@ pub(crate) fn get_str_act(disp: Option<&Display>) -> Result<Obj> {
NonNull::new(scr_ptr).ok_or(CoreError::ResourceNotAvailable)?,
))
}
pub fn tick_inc(tick_period: Duration) {
unsafe {
lvgl_sys::lv_tick_inc(tick_period.as_millis() as u32);
}
}
/// Call it periodically to handle tasks.
/// Returns the duration after which it must be called again.
pub fn task_handler() -> Option<Duration> {
let next_call_at = unsafe { lvgl_sys::lv_task_handler() };
Some(Duration::from_secs(next_call_at as u64))
}