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34 lines
1.0 KiB
C
34 lines
1.0 KiB
C
#include "../../lv_examples.h"
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#if LV_USE_CHART && LV_BUILD_EXAMPLES
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/**
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* A very basic line chart
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*/
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void lv_example_chart_1(void)
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{
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/*Create a chart*/
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lv_obj_t * chart;
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chart = lv_chart_create(lv_screen_active());
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lv_obj_set_size(chart, 200, 150);
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lv_obj_center(chart);
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lv_chart_set_type(chart, LV_CHART_TYPE_LINE); /*Show lines and points too*/
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/*Add two data series*/
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lv_chart_series_t * ser1 = lv_chart_add_series(chart, lv_palette_main(LV_PALETTE_GREEN), LV_CHART_AXIS_PRIMARY_Y);
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lv_chart_series_t * ser2 = lv_chart_add_series(chart, lv_palette_main(LV_PALETTE_RED), LV_CHART_AXIS_SECONDARY_Y);
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int32_t * ser2_y_points = lv_chart_get_y_array(chart, ser2);
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uint32_t i;
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for(i = 0; i < 10; i++) {
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/*Set the next points on 'ser1'*/
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lv_chart_set_next_value(chart, ser1, lv_rand(10, 50));
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/*Directly set points on 'ser2'*/
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ser2_y_points[i] = lv_rand(50, 90);
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}
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lv_chart_refresh(chart); /*Required after direct set*/
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}
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#endif
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