feat(demos): Add demo for the OSAL

Adds a demo demonstrating the use of the OSAL.

Resolves: lvgl#6049

.devcontainer/__lv_conf.h__

@@ -938,6 +938,9 @@
 
 /*Vector graphic demo*/
 #define LV_USE_DEMO_VECTOR_GRAPHIC 0
+
+/*Demonstrate OSAL*/
+#define LV_USE_DEMO_OSAL 1
 /*--END OF LV_CONF_H--*/
 
 #endif /*LV_CONF_H*/

Kconfig

@@ -1697,6 +1697,10 @@ menu "LVGL configuration"
  bool "vector graphic demo"
  default n
  depends on LV_USE_VECTOR_GRAPHIC
+ config LV_USE_DEMO_OSAL
+ bool "OSAL demo"
+ default n
+ depends on LV_USE_OS > 0
  endmenu
 
 endmenu

demos/lv_demos.c

@@ -71,6 +71,10 @@ static const demo_entry_info_t demos_entry_info[] = {
  { "benchmark", .entry_cb = lv_demo_benchmark },
 #endif
 
+#if LV_USE_DEMO_OSAL
+ { "osal", .entry_cb = lv_demo_osal },
+#endif
+
  { "", .entry_cb = NULL }
 };
 

demos/lv_demos.h

@@ -59,6 +59,9 @@ extern "C" {
 #include "render/lv_demo_render.h"
 #endif
 
+#if LV_USE_DEMO_OSAL
+#include "osal/lv_demo_osal.h"
+#endif
 /*********************
  * DEFINES
  *********************/

demos/osal/README.md

@@ -0,0 +1,11 @@
+# OSAL demo
+
+## Overview
+
+A OSAL test for LVGL.
+
+
+## Run the demo
+- In `lv_conf.h` or equivalent places set `LV_USE_DEMO_OSAL 1`
+- In `lv_conf.h` enable all the widgets (`LV_USE_BUTTON 1`) and the label (`LV_USE_LABEL 1`)
+- After `lv_init()` and initializing the drivers call `lv_demo_osal()`

demos/osal/lv_demo_osal.c

@@ -0,0 +1,88 @@
+/**
+ * @file lv_demo_osal.c
+ *
+ */
+
+/*********************
+ * INCLUDES
+ *********************/
+#include "lv_demo_osal.h"
+
+#if LV_USE_DEMO_OSAL
+
+/*********************
+ * DEFINES
+ *********************/
+
+/**********************
+ * TYPEDEFS
+ **********************/
+
+/**********************
+ * STATIC PROTOTYPES
+ **********************/
+static void counter_button_event_cb(lv_event_t * e);
+static void increment_thread_entry(void * user_data);
+
+/**********************
+ * STATIC VARIABLES
+ **********************/
+static lv_thread_sync_t press_sync;
+static lv_thread_t increment_thread;
+
+/**********************
+ * MACROS
+ **********************/
+
+/**********************
+ * GLOBAL FUNCTIONS
+ **********************/
+
+void lv_demo_osal(void)
+{
+ lv_obj_t * counter_button;
+
+ counter_button = lv_button_create(lv_screen_active());
+ lv_obj_align(counter_button, LV_ALIGN_CENTER, 0, -15);
+ lv_obj_add_event_cb(counter_button, counter_button_event_cb, LV_EVENT_CLICKED, NULL);
+
+ if(lv_thread_sync_init(&press_sync) != LV_RESULT_OK) {
+ LV_LOG_ERROR("Error initializing thread sync");
+ }
+
+ if(lv_thread_init(&increment_thread, LV_THREAD_PRIO_MID, increment_thread_entry, 2048, NULL) != LV_RESULT_OK) {
+ LV_LOG_ERROR("Error initializing thread");
+ }
+}
+
+/**********************
+ * STATIC FUNCTIONS
+ **********************/
+
+void counter_button_event_cb(lv_event_t * e)
+{
+ if(lv_thread_sync_signal(&press_sync) != LV_RESULT_OK) {
+ LV_LOG_ERROR("Error signaling thread sync");
+ }
+}
+
+void increment_thread_entry(void * user_data)
+{
+ lv_obj_t * counter_label;
+ uint32_t press_count = 0;
+
+ counter_label = lv_label_create(lv_scr_act());
+ lv_obj_align(counter_label, LV_ALIGN_CENTER, 0, 0);
+ lv_label_set_text_fmt("Pressed %u times", press_count);
+
+ while(true) {
+ if(lv_thread_sync_wait(&press_sync) != LV_RESULT_OK) {
+ LV_LOG_ERROR("Error awaiting thread sync");
+ }
+ press_count += 1;
+ lv_label_set_text_fmt("Pressed %u times", press_count);
+ }
+}
+
+
+#endif

demos/osal/lv_demo_osal.h

@@ -0,0 +1,39 @@
+/**
+ * @file lv_demo_osal.h
+ *
+ */
+
+#ifndef LV_DEMO_OSAL_H
+#define LV_DEMO_OSAL_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ * INCLUDES
+ *********************/
+#include "../lv_demos.h"
+
+/*********************
+ * DEFINES
+ *********************/
+
+/**********************
+ * TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+void lv_demo_osal(void);
+
+/**********************
+ * MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*LV_DEMO_OSAL_H*/

lv_conf_template.h

@@ -1019,6 +1019,9 @@
 
 /*Vector graphic demo*/
 #define LV_USE_DEMO_VECTOR_GRAPHIC 0
+
+/* OSAL demo */
+#define LV_USE_DEMO_OSAL 0
 /*--END OF LV_CONF_H--*/
 
 #endif /*LV_CONF_H*/

src/lv_conf_internal.h

@@ -3320,7 +3320,14 @@
  #endif
 #endif
 
-
+/*OSAL demo*/
+#ifndef LV_USE_DEMO_OSAL
+ #ifdef CONFIG_LV_USE_DEMO_OSAL
+ #define LV_USE_DEMO_OSAL CONFIG_LV_USE_DEMO_OSAL
+ #else
+ #define LV_USE_DEMO_OSAL 0
+ #endif
+#endif
 /*----------------------------------
  * End of parsing lv_conf_template.h
  -----------------------------------*/

tests/src/lv_test_conf_full.h

@@ -104,6 +104,7 @@
 #define LV_USE_DEMO_BENCHMARK 1
 #define LV_USE_DEMO_SCROLL 1
 #define LV_USE_DEMO_VECTOR_GRAPHIC 1
+#define LV_USE_DEMO_OSAL 1
 
 #define LV_USE_OBJ_ID 1
 #define LV_USE_OBJ_ID_BUILTIN 1