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update comments in lv_port_disp_template

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This commit is contained in:
Gabor Kiss-Vamosi 2020-09-07 10:13:07 +02:00
parent 710ec7d417
commit b1c43d329d
1 changed files with 15 additions and 13 deletions
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28
examples/porting/lv_port_disp_template.c
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@ -54,7 +54,9 @@ void lv_port_disp_init(void)
* Create a buffer for drawing
*----------------------------*/
/* LVGL requires a buffer where it draws the objects. The buffer's has to be greater than 1 display row
/* LVGL requires a buffer where it internally draws the widgets.
* Later this buffer will passed your display drivers `flush_cb` to copy its content to your dispay.
* The buffer has to be greater than 1 display row
*
* There are three buffering configurations:
* 1. Create ONE buffer with some rows:
@ -73,21 +75,21 @@ void lv_port_disp_init(void)
* */
/* Example for 1) */
static lv_disp_buf_t disp_buf_1;
static lv_color_t buf1_1[LV_HOR_RES_MAX * 10]; /*A buffer for 10 rows*/
lv_disp_buf_init(&disp_buf_1, buf1_1, NULL, LV_HOR_RES_MAX * 10); /*Initialize the display buffer*/
static lv_disp_buf_t draw_buf_dsc_1;
static lv_color_t draw_buf_1[LV_HOR_RES_MAX * 10]; /*A buffer for 10 rows*/
lv_disp_buf_init(&draw_buf_dsc_1, draw_buf_1, NULL, LV_HOR_RES_MAX * 10); /*Initialize the display buffer*/
/* Example for 2) */
static lv_disp_buf_t disp_buf_2;
static lv_color_t buf2_1[LV_HOR_RES_MAX * 10]; /*A buffer for 10 rows*/
static lv_color_t buf2_2[LV_HOR_RES_MAX * 10]; /*An other buffer for 10 rows*/
lv_disp_buf_init(&disp_buf_2, buf2_1, buf2_2, LV_HOR_RES_MAX * 10); /*Initialize the display buffer*/
static lv_disp_buf_t draw_buf_dsc_2;
static lv_color_t draw_buf_2_1[LV_HOR_RES_MAX * 10]; /*A buffer for 10 rows*/
static lv_color_t draw_buf_2_1[LV_HOR_RES_MAX * 10]; /*An other buffer for 10 rows*/
lv_disp_buf_init(&draw_buf_dsc_2, draw_buf_2_1, draw_buf_2_1, LV_HOR_RES_MAX * 10); /*Initialize the display buffer*/
/* Example for 3) */
static lv_disp_buf_t disp_buf_3;
static lv_color_t buf3_1[LV_HOR_RES_MAX * LV_VER_RES_MAX]; /*A screen sized buffer*/
static lv_color_t buf3_2[LV_HOR_RES_MAX * LV_VER_RES_MAX]; /*An other screen sized buffer*/
lv_disp_buf_init(&disp_buf_3, buf3_1, buf3_2, LV_HOR_RES_MAX * LV_VER_RES_MAX); /*Initialize the display buffer*/
static lv_disp_buf_t draw_buf_dsc_3;
static lv_color_t draw_buf_3_1[LV_HOR_RES_MAX * LV_VER_RES_MAX]; /*A screen sized buffer*/
static lv_color_t draw_buf_3_1[LV_HOR_RES_MAX * LV_VER_RES_MAX]; /*An other screen sized buffer*/
lv_disp_buf_init(&draw_buf_dsc_3, draw_buf_3_1, draw_buf_3_2, LV_HOR_RES_MAX * LV_VER_RES_MAX); /*Initialize the display buffer*/
/*-----------------------------------
@ -107,7 +109,7 @@ void lv_port_disp_init(void)
disp_drv.flush_cb = disp_flush;
/*Set a display buffer*/
disp_drv.buffer = &disp_buf_2;
disp_drv.buffer = &draw_buf_dsc_1;
#if LV_USE_GPU
/*Optionally add functions to access the GPU. (Only in buffered mode, LV_VDB_SIZE != 0)*/