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Merge 326f094479 into 6ca1272b99

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Aviral Garg 2026-07-26 01:03:17 -07:00 • committed by GitHub
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2 changed files with 91 additions and 13 deletions
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16
examples/lvgldemo/Kconfig
View file

@ -27,4 +27,20 @@ config EXAMPLES_LVGLDEMO_INPUT_DEVPATH
---help---
The path to the touchscreen device. Default: "/dev/input0"
config EXAMPLES_LVGLDEMO_FBDEVPATH
string "Framebuffer device path"
default "/dev/fb0"
depends on !LV_USE_NUTTX_LCD
---help---
The path to the framebuffer device. Default: "/dev/fb0"
config EXAMPLES_LVGLDEMO_TOUCH_DIAGNOSTIC
bool "Show touchscreen diagnostic"
default n
depends on INPUT_TOUCHSCREEN
---help---
Show touchscreen open status, press state, and coordinates instead
of an LVGL demo. This can distinguish an unavailable touchscreen
device from incorrect coordinate mapping without a serial console.
endif # EXAMPLES_LVGLDEMO

88
examples/lvgldemo/lvgldemo.c
View file

@ -25,42 +25,42 @@
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/boardctl.h>
#include <lvgl/lvgl.h>
#include <lvgl/demos/lv_demos.h>
#ifdef CONFIG_LV_USE_NUTTX_LIBUV
#include <uv.h>
# include <uv.h>
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
#ifdef CONFIG_EXAMPLES_LVGLDEMO_TOUCH_DIAGNOSTIC
static FAR lv_indev_t *g_touch_indev;
static FAR lv_obj_t *g_touch_label;
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
#ifdef CONFIG_LV_USE_NUTTX_LIBUV
static void lv_nuttx_uv_loop(uv_loop_t *loop, lv_nuttx_result_t *result)
static void lv_nuttx_uv_loop(FAR uv_loop_t *loop,
FAR lv_nuttx_result_t *result)
{
lv_nuttx_uv_t uv_info;
void *data;
FAR void *data;
uv_loop_init(loop);
lv_memset(&uv_info, 0, sizeof(uv_info));
uv_info.loop = loop;
uv_info.disp = result->disp;
uv_info.loop = loop;
uv_info.disp = result->disp;
uv_info.indev = result->indev;
#ifdef CONFIG_UINPUT_TOUCH
uv_info.uindev = result->utouch_indev;
@ -72,6 +72,58 @@ static void lv_nuttx_uv_loop(uv_loop_t *loop, lv_nuttx_result_t *result)
}
#endif
#ifdef CONFIG_EXAMPLES_LVGLDEMO_TOUCH_DIAGNOSTIC
static void touch_diag_update(FAR lv_timer_t *timer)
{
char text[64];
lv_point_t point;
lv_indev_state_t state;
if (g_touch_indev == NULL)
{
return;
}
state = lv_indev_get_state(g_touch_indev);
lv_indev_get_point(g_touch_indev, &point);
snprintf(text, sizeof(text), "state: %s\nx: %d y: %d",
state == LV_INDEV_STATE_PRESSED ? "pressed" : "released",
(int)point.x, (int)point.y);
lv_label_set_text(g_touch_label, text);
(void)timer;
}
static void touch_diag_create(FAR lv_indev_t *indev)
{
FAR lv_obj_t *screen;
FAR lv_obj_t *title;
screen = lv_obj_create(NULL);
title = lv_label_create(screen);
lv_label_set_text(title, "Touchscreen diagnostic");
lv_obj_align(title, LV_ALIGN_TOP_MID, 0, 24);
g_touch_label = lv_label_create(screen);
lv_obj_align(g_touch_label, LV_ALIGN_CENTER, 0, 0);
g_touch_indev = indev;
if (indev == NULL)
{
lv_label_set_text(g_touch_label,
"Touchscreen device could not be opened");
}
else
{
lv_label_set_text(g_touch_label,
"Touch the display to inspect coordinates");
lv_timer_create(touch_diag_update, 50, NULL);
}
lv_scr_load(screen);
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
@ -111,6 +163,8 @@ int main(int argc, FAR char *argv[])
#ifdef CONFIG_LV_USE_NUTTX_LCD
info.fb_path = "/dev/lcd0";
#else
info.fb_path = CONFIG_EXAMPLES_LVGLDEMO_FBDEVPATH;
#endif
#ifdef CONFIG_INPUT_TOUCHSCREEN
@ -122,9 +176,14 @@ int main(int argc, FAR char *argv[])
if (result.disp == NULL)
{
LV_LOG_ERROR("lv_demos initialization failure!");
lv_nuttx_deinit(&result);
lv_deinit();
return 1;
}
#ifdef CONFIG_EXAMPLES_LVGLDEMO_TOUCH_DIAGNOSTIC
touch_diag_create(result.indev);
#else
if (!lv_demos_create(&argv[1], argc - 1))
{
lv_demos_show_help();
@ -133,6 +192,7 @@ int main(int argc, FAR char *argv[])
goto demo_end;
}
#endif
#ifdef CONFIG_LV_USE_NUTTX_LIBUV
lv_nuttx_uv_loop(&ui_loop, &result);
@ -149,7 +209,9 @@ int main(int argc, FAR char *argv[])
}
#endif
#ifndef CONFIG_EXAMPLES_LVGLDEMO_TOUCH_DIAGNOSTIC
demo_end:
#endif
lv_nuttx_deinit(&result);
lv_deinit();