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47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
2 years ago
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#include "../../lv_examples.h"
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#if LV_USE_CHART && LV_DRAW_COMPLEX && LV_BUILD_EXAMPLES
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static void add_data(lv_timer_t * t)
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{
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lv_obj_t * chart = t->user_data;
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lv_chart_series_t * ser = lv_chart_get_series_next(chart, NULL);
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lv_chart_set_next_value(chart, ser, lv_rand(10, 90));
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uint16_t p = lv_chart_get_point_count(chart);
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uint16_t s = lv_chart_get_x_start_point(chart, ser);
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lv_coord_t * a = lv_chart_get_y_array(chart, ser);
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a[(s + 1) % p] = LV_CHART_POINT_NONE;
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a[(s + 2) % p] = LV_CHART_POINT_NONE;
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a[(s + 2) % p] = LV_CHART_POINT_NONE;
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lv_chart_refresh(chart);
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}
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/**
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* Circular line chart with gap
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*/
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void lv_example_chart_9(void)
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{
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/*Create a stacked_area_chart.obj*/
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lv_obj_t * chart = lv_chart_create(lv_scr_act());
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lv_chart_set_update_mode(chart, LV_CHART_UPDATE_MODE_CIRCULAR);
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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_point_count(chart, 30);
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lv_chart_series_t * ser = lv_chart_add_series(chart, lv_palette_main(LV_PALETTE_RED), LV_CHART_AXIS_PRIMARY_Y);
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/*Prefill with data*/
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uint32_t i;
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for(i = 0; i < 30; i++) {
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lv_chart_set_next_value(chart, ser, lv_rand(10, 90));
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}
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lv_timer_create(add_data, 300, chart);
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}
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#endif
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