init Files

libraries/lvgl/examples/others/observer/lv_example_observer_1.c

@@ -0,0 +1,24 @@
+#include "../../lv_examples.h"
+#if LV_USE_OBSERVER && LV_USE_SLIDER && LV_USE_LABEL && LV_BUILD_EXAMPLES
+
+static lv_subject_t temperature_subject;
+
+/**
+ * A slider sends a message on value change and a label display's that value
+ */
+void lv_example_observer_1(void)
+{
+    lv_subject_init_int(&temperature_subject, 28);
+
+    /*Create a slider in the center of the display*/
+    lv_obj_t * slider = lv_slider_create(lv_screen_active());
+    lv_obj_center(slider);
+    lv_slider_bind_value(slider, &temperature_subject);
+
+    /*Create a label below the slider*/
+    lv_obj_t * label = lv_label_create(lv_screen_active());
+    lv_obj_align(label, LV_ALIGN_CENTER, 0, 30);
+    lv_label_bind_text(label, &temperature_subject, "%d °C");
+}
+
+#endif