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32 lines
746 B
Python
32 lines
746 B
Python
import display_driver
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import lvgl as lv
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def add_data(t):
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chart.set_next_value(ser, lv.rand(10, 90))
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p = chart.get_point_count()
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s = chart.get_x_start_point(ser)
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a = chart.get_y_array(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 + 3) % p] = lv.CHART_POINT.NONE
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chart.refresh()
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#
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# Circular line chart with gap
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#
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chart = lv.chart(lv.scr_act())
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chart.set_update_mode(lv.chart.UPDATE_MODE.CIRCULAR)
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chart.set_size(200, 150)
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chart.center()
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chart.set_point_count(30)
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ser = chart.add_series(lv.palette_main(lv.PALETTE.RED), lv.chart.AXIS.PRIMARY_Y)
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#Prefill with data
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for i in range(0, 30):
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chart.set_next_value(ser, lv.rand(10, 90))
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lv.timer_create(add_data, 200, None)
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