kaspar/RIOT
1
0
Fork 0
mirror of https://github.com/RIOT-OS/RIOT.git synced 2025-12-15 17:43:51 +01:00
Code Releases Activity

Merge pull request #21726 from leandrolanzieri/pr/lvgl_monochrome

Browse Source 
pkg/lvgl: support monochrome displays via u8g2
This commit is contained in:
crasbe 2025-09-22 13:21:30 +00:00 committed by GitHub
commit db7a67beb5
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
3 changed files with 38 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
pkg/lvgl/contrib/lvgl.c
View File

@ -39,7 +39,11 @@
#endif
#ifndef LVGL_COLOR_BUF_SIZE
#define LVGL_COLOR_BUF_SIZE (LV_HOR_RES_MAX * 10)
# if IS_USED(MODULE_U8G2_DISP_DEV)
# define LVGL_COLOR_BUF_SIZE (LV_HOR_RES_MAX * 10 * 8)
# else
# define LVGL_COLOR_BUF_SIZE (LV_HOR_RES_MAX * 10)
# endif
#endif
#ifndef CONFIG_LVGL_INACTIVITY_PERIOD_MS
@ -134,6 +138,23 @@ static void _touch_read(lv_indev_drv_t *indev_driver, lv_indev_data_t *data)
}
#endif
/* Pixel placement for monochrome displays where color depth is 1 bit, and each bit represents
a pixel */
static void _monochrome_1bit_set_px_cb(lv_disp_drv_t *disp_drv, uint8_t *buf, lv_coord_t buf_w,
lv_coord_t x, lv_coord_t y, lv_color_t color, lv_opa_t opa)
{
(void)disp_drv;
(void)opa;
uint16_t byte = (y * buf_w / 8) + (x / 8);
if (lv_color_brightness(color) > 128) {
(buf[byte]) |= (1 << (x % 8));
}
else {
(buf[byte]) &= ~(1 << (x % 8));
}
}
void lvgl_init(screen_dev_t *screen_dev)
{
lv_init();
@ -164,6 +185,11 @@ void lvgl_init(screen_dev_t *screen_dev)
disp_drv.ver_res = disp_dev_height(screen_dev->display);
#endif
if (disp_dev_color_depth(screen_dev->display) == 1) {
disp_drv.full_refresh = 1;
disp_drv.set_px_cb = _monochrome_1bit_set_px_cb;
}
lv_disp_drv_register(&disp_drv);
#if IS_USED(MODULE_TOUCH_DEV)
@ -208,5 +234,6 @@ void lvgl_run(void)
void lvgl_wakeup(void)
{
thread_t *tcb = thread_get(_task_thread_pid);
thread_flags_set(tcb, LVGL_THREAD_FLAG);
}

8
pkg/lvgl/include/lv_conf.h
View File

@ -30,13 +30,17 @@ extern "C" {
*====================*/
/* Color depth:
* - 1: 1 byte per pixel
* - 1: 1 bit per pixel
* - 8: RGB233
* - 16: RGB565
* - 32: ARGB8888
*/
#ifndef LV_COLOR_DEPTH
#define LV_COLOR_DEPTH 16
# if IS_USED(MODULE_U8G2_DISP_DEV)
# define LV_COLOR_DEPTH 1
# else
# define LV_COLOR_DEPTH 16
# endif
#endif
/* Swap the 2 bytes of RGB565 color.

4
sys/auto_init/screen/auto_init_lvgl.c
View File

@ -50,6 +50,10 @@ void auto_init_lvgl(void)
/* Only a single screen is supported by lvgl */
#if !IS_USED(MODULE_LV_DRIVERS_SDL)
disp_dev_reg_t *disp_dev = disp_dev_reg_find_screen(CONFIG_LVGL_SCREEN_DEFAULT);
if (disp_dev == NULL) {
puts("[auto_init_screen] error: no display device found\n");
return;
}
s_screen.display = disp_dev->dev;
#endif