Important: unclear posts may not receive useful answers.
Before posting
- Get familiar with Markdown to format and structure your post
- Be sure to update lvgl from the latest version from the
masterbranch.- Be sure you have checked the FAQ and read the relevant part of the documentation.
- If applicable use the Simulator to eliminate hardware related issues.
Delete this section if you read and applied the mentioned points.
Description
What MCU/Processor/Board and compiler are you using?
What LVGL version are you using?
What do you want to achieve?
What have you tried so far?
Code to reproduce
Add a code snippet which can run in the simulator. It should contain only the relevant code that compiles without errors when separated from your main code base.
The code block(s) should be formatted like:
/*You code here*/
lv_style_init(&style);
chart = lv_chart_create(src);
lv_style_set_line_width(&style,2);
lv_obj_set_style_bg_opa(chart,LV_OPA_50,LV_PART_SELECTED);
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*/
lv_style_set_bg_opa(&style, LV_OPA_50); /*Max. opa.*/
lv_style_set_bg_color(&style, lv_palette_main(LV_PALETTE_YELLOW));
lv_style_set_bg_grad_color(&style, lv_palette_main(LV_PALETTE_PINK));
lv_style_set_bg_grad_dir(&style, LV_GRAD_DIR_VER);
lv_style_set_bg_main_stop(&style, 255);
lv_style_set_bg_grad_stop(&style, 188);
lv_obj_add_style(chart, &style, 0);
lv_chart_set_series_width(chart,2);
/*Add two data series*/
lv_chart_series_t * ser1 = lv_chart_add_series(chart, lv_palette_main(LV_PALETTE_RED), LV_CHART_AXIS_PRIMARY_Y);
lv_chart_series_t * ser2 = lv_chart_add_series(chart, lv_palette_main(LV_PALETTE_GREEN), LV_CHART_AXIS_SECONDARY_Y);
/*Add a faded are effect*/
//lv_obj_set_style_local_bg_opa(chart, LV_CHART_PART_SERIES, LV_STATE_DEFAULT, LV_OPA_50); /*Max. opa.*/
//lv_obj_set_style_local_bg_grad_dir(chart, LV_CHART_PART_SERIES, LV_STATE_DEFAULT, LV_GRAD_DIR_VER);
//lv_obj_set_style_local_bg_main_stop(chart, LV_CHART_PART_SERIES, LV_STATE_DEFAULT, 255); /*Max opa on the top*/
//lv_obj_set_style_local_bg_grad_stop(chart, LV_CHART_PART_SERIES, LV_STATE_DEFAULT, 0); /*Transparent on the bottom*/
/*Set the next points on 'ser1'*/
lv_chart_set_next_value(chart, ser1, 31);
lv_chart_set_next_value(chart, ser1, 66);
lv_chart_set_next_value(chart, ser1, 10);
lv_chart_set_next_value(chart, ser1, 89);
lv_chart_set_next_value(chart, ser1, 63);
lv_chart_set_next_value(chart, ser1, 10);
lv_chart_set_next_value(chart, ser1, 10);
lv_chart_set_next_value(chart, ser1, 30);
lv_chart_set_next_value(chart, ser1, 70);
lv_chart_set_next_value(chart, ser1, 90);
/*Directly set points on 'ser2'*/
ser2->y_points[0] = 90;
ser2->y_points[1] = 70;
ser2->y_points[2] = 65;
ser2->y_points[3] = 65;
ser2->y_points[4] = 65;
ser2->y_points[5] = 65;
ser2->y_points[6] = 65;
ser2->y_points[7] = 65;
ser2->y_points[8] = 65;
ser2->y_points[9] = 65;
lv_chart_refresh(chart); /*Required after direct set*/
Screenshot and/or video
If possible, add screenshots and/or videos about the current state.