update asserts

examples/widgets/meter/lv_example_meter_2.c

@@ -0,0 +1,60 @@
+#include "../../../lvgl.h"
+#include <stdio.h>
+#if LV_USE_METER
+
+static lv_obj_t * meter;
+
+static void set_value(lv_meter_indicator_t * indic, int32_t v)
+{
+    lv_meter_set_indicator_end_value(meter, indic, v);
+}
+
+
+/**
+ * A meter with multiple arcs
+ */
+void lv_example_meter_2(void)
+{
+    meter = lv_meter_create(lv_scr_act(), NULL);
+    lv_obj_align(meter, NULL, LV_ALIGN_CENTER, 0, 0);
+
+    /*Remove the circle from the middle*/
+    lv_obj_remove_style(meter, LV_PART_INDICATOR, LV_STATE_ANY, NULL);
+
+    /*Add a scale first*/
+    lv_meter_scale_t * scale = lv_meter_add_scale(meter);
+    lv_meter_set_scale_ticks(meter, scale, 11, 2, 10, LV_COLOR_GRAY);
+    lv_meter_set_scale_major_ticks(meter, scale, 1, 2, 30, lv_color_hex3(0xeee), 10);
+    lv_meter_set_scale_range(meter, scale, 0, 100, 270, 90);
+
+    /*Add a three arc indicator */
+    lv_meter_indicator_t * indic1 = lv_meter_add_arc(meter, scale, 10, LV_COLOR_RED, 0);
+    lv_meter_indicator_t * indic2 = lv_meter_add_arc(meter, scale, 10, LV_COLOR_GREEN, -10);
+    lv_meter_indicator_t * indic3 = lv_meter_add_arc(meter, scale, 10, LV_COLOR_BLUE, -20);
+
+    /*Create an animation to set the value*/
+    lv_anim_t a;
+    lv_anim_init(&a);
+    lv_anim_set_exec_cb(&a, (lv_anim_exec_xcb_t) set_value);
+    lv_anim_set_values(&a, 0, 100);
+    lv_anim_set_repeat_delay(&a, 100);
+    lv_anim_set_playback_delay(&a, 100);
+    lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
+
+    lv_anim_set_time(&a, 2000);
+    lv_anim_set_playback_time(&a, 500);
+    lv_anim_set_var(&a, indic1);
+    lv_anim_start(&a);
+
+    lv_anim_set_time(&a, 1000);
+    lv_anim_set_playback_time(&a, 1000);
+    lv_anim_set_var(&a, indic2);
+    lv_anim_start(&a);
+
+    lv_anim_set_time(&a, 1000);
+    lv_anim_set_playback_time(&a, 2000);
+    lv_anim_set_var(&a, indic3);
+    lv_anim_start(&a);
+}
+
+#endif