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