fix(chart) don't draw series lines with < 1 points

Releated to https://forum.lvgl.io/t/maybe-it-has-bug-in-draw-chart-line-data/6394
lvgl · Aug 9, 2021 · 655f42b · embeddedt · Aug 9, 2021 · kisvegabor
1 parent a1b362c
commit 655f42b
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/extra/widgets/chart/lv_chart.c b/src/extra/widgets/chart/lv_chart.c
@@ -839,6 +839,7 @@ static void draw_series_line(lv_obj_t * obj, const lv_area_t * clip_area)
     if(_lv_area_intersect(&com_area, &obj->coords, clip_area) == false) return;
 
     lv_chart_t * chart  = (lv_chart_t *)obj;
+    if(chart->point_cnt < 1) return;
 p2.x = ((w * i) / (chart->point_cnt - 1)) + x_ofs; 
 p2.x = ((w * i) / (chart->point_cnt - 1)) + x_ofs; 
 
     uint16_t i;
     lv_point_t p1;