Embedded/lvgl
1
0
Fork 0
mirror of https://github.com/lvgl/lvgl.git synced 2025-01-28 07:03:00 +08:00
Code Issues Projects Releases Wiki Activity

Merge branch 'event' of https://github.com/littlevgl/lvgl into event

Browse Source
This commit is contained in:
Gabor Kiss-Vamosi 2019-03-07 00:42:20 +01:00
commit d5dd1c4b10
1 changed files with 14 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
lv_porting/lv_port_disp_templ.c
View File

@ -53,17 +53,22 @@ void lv_port_disp_init(void)
* Create a buffer for drawing
*----------------------------*/
/* LittlevGL requires a buffer where it draw the objects. The buffer's has to be greater than 1 display row
/* LittlevGL requires a buffer where it draws the objects. The buffer's has to be greater than 1 display row
*
* There are three buffering configurations:
* 1. Create ONE buffer some rows: LittlevGL will draw the display's content here and writes it to your display
* 2. Create TWO buffer some rows: LittlevGL will draw the display's content to a buffer and writes it your display.
* You should use DMA to write the buffer's content to the display.
* It will enable LittlevGL to draw the next part of the screen to the other buffer while
* the data is being sent form the first buffer. It makes rendering and flushing parallel.
* 3. Create TWO screen buffer: Similar to 2) but the buffer have to be screen sized. When LittlevGL is ready it will give the
* whole frame to display. This way you only need to change the frame buffer's address instead of
* copying the pixels.
* 1. Create ONE buffer with some rows:
* LittlevGL will draw the display's content here and writes it to your display
*
* 2. Create TWO buffer with some rows:
* LittlevGL will draw the display's content to a buffer and writes it your display.
* You should use DMA to write the buffer's content to the display.
* It will enable LittlevGL to draw the next part of the screen to the other buffer while
* the data is being sent form the first buffer. It makes rendering and flushing parallel.
*
* 3. Create TWO screen-sized buffer:
* Similar to 2) but the buffer have to be screen sized. When LittlevGL is ready it will give the
* whole frame to display. This way you only need to change the frame buffer's address instead of
* copying the pixels.
* */
/* Example for 1) */