1 #include "../../lv_examples.h"
2 #if LV_USE_CHART && LV_BUILD_EXAMPLES
3
4 /**
5 * A very basic line chart
6 */
lv_example_chart_1(void)7 void lv_example_chart_1(void)
8 {
9 /*Create a chart*/
10 lv_obj_t * chart;
11 chart = lv_chart_create(lv_screen_active());
12 lv_obj_set_size(chart, 200, 150);
13 lv_obj_center(chart);
14 lv_chart_set_type(chart, LV_CHART_TYPE_LINE); /*Show lines and points too*/
15
16 /*Add two data series*/
17 lv_chart_series_t * ser1 = lv_chart_add_series(chart, lv_palette_main(LV_PALETTE_GREEN), LV_CHART_AXIS_PRIMARY_Y);
18 lv_chart_series_t * ser2 = lv_chart_add_series(chart, lv_palette_main(LV_PALETTE_RED), LV_CHART_AXIS_SECONDARY_Y);
19 int32_t * ser2_y_points = lv_chart_get_y_array(chart, ser2);
20
21 uint32_t i;
22 for(i = 0; i < 10; i++) {
23 /*Set the next points on 'ser1'*/
24 lv_chart_set_next_value(chart, ser1, lv_rand(10, 50));
25
26 /*Directly set points on 'ser2'*/
27 ser2_y_points[i] = lv_rand(50, 90);
28 }
29
30 lv_chart_refresh(chart); /*Required after direct set*/
31 }
32
33 #endif
34
