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feat(porting): add flushing control to the template (#3384)

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* feat(porting): add flushing control to the template

* Update examples/porting/lv_port_disp_template.c

Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>

* Update examples/porting/lv_port_disp_template.c

Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>

* Update examples/porting/lv_port_disp_template.c

Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>

* Update lv_port_disp_template.h

* use consistent comment

Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
This commit is contained in:
Gabriel Wang
2022-06-03 14:08:08 +01:00
committed by GitHub
parent e59c83b453
commit c9fa4ef0fc
2 changed files with 45 additions and 8 deletions
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44
examples/porting/lv_port_disp_template.c
View File

@@ -11,10 +11,20 @@
*********************/
#include "lv_port_disp_template.h"
#include "../../lvgl.h"
#include <stdbool.h>
/*********************
* DEFINES
*********************/
#ifndef MY_DISP_HOR_RES
#warning Please define or replace the macro MY_DISP_HOR_RES with the actual screen width, default value 320 is used for now.
#define MY_DISP_HOR_RES 320
#endif
#ifndef MY_DISP_VER_RES
#warning Please define or replace the macro MY_DISP_HOR_RES with the actual screen height, default value 240 is used for now.
#define MY_DISP_VER_RES 240
#endif
/**********************
* TYPEDEFS
@@ -132,20 +142,38 @@ static void disp_init(void)
/*You code here*/
}
volatile bool disp_flush_enabled = true;
/* Enable updating the screen (the flushing process) when disp_flush() is called by LVGL
*/
void disp_enable_update(void)
{
disp_flush_enabled = true;
}
/* Disable updating the screen (the flushing process) when disp_flush() is called by LVGL
*/
void disp_disable_update(void)
{
disp_flush_enabled = false;
}
/*Flush the content of the internal buffer the specific area on the display
*You can use DMA or any hardware acceleration to do this operation in the background but
*'lv_disp_flush_ready()' has to be called when finished.*/
static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)
{
/*The most simple case (but also the slowest) to put all pixels to the screen one-by-one*/
if(disp_flush_enabled) {
/*The most simple case (but also the slowest) to put all pixels to the screen one-by-one*/
int32_t x;
int32_t y;
for(y = area->y1; y <= area->y2; y++) {
for(x = area->x1; x <= area->x2; x++) {
/*Put a pixel to the display. For example:*/
/*put_px(x, y, *color_p)*/
color_p++;
int32_t x;
int32_t y;
for(y = area->y1; y <= area->y2; y++) {
for(x = area->x1; x <= area->x2; x++) {
/*Put a pixel to the display. For example:*/
/*put_px(x, y, *color_p)*/
color_p++;
}
}
}

9
examples/porting/lv_port_disp_template.h
View File

@@ -29,8 +29,17 @@ extern "C" {
/**********************
* GLOBAL PROTOTYPES
**********************/
/* Initialize low level display driver */
void lv_port_disp_init(void);
/* Enable updating the screen (the flushing process) when disp_flush() is called by LVGL
*/
void disp_enable_update(void);
/* Disable updating the screen (the flushing process) when disp_flush() is called by LVGL
*/
void disp_disable_update(void);
/**********************
* MACROS
**********************/