59 lines
1.7 KiB
Python
59 lines
1.7 KiB
Python
#!//opt/bin/lv_micropython -i
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import utime as time
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import lvgl as lv
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import display_driver
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def set_value(indic, v):
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meter.set_indicator_value(indic, v)
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#
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# A simple meter
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#
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meter = lv.meter(lv.scr_act())
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meter.center()
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meter.set_size(200, 200)
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# Add a scale first
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scale = meter.add_scale()
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meter.set_scale_ticks(scale, 51, 2, 10, lv.palette_main(lv.PALETTE.GREY))
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meter.set_scale_major_ticks(scale, 10, 4, 15, lv.color_black(), 10)
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indic = lv.meter_indicator_t()
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# Add a blue arc to the start
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indic = meter.add_arc(scale, 3, lv.palette_main(lv.PALETTE.BLUE), 0)
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meter.set_indicator_start_value(indic, 0)
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meter.set_indicator_end_value(indic, 20)
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# Make the tick lines blue at the start of the scale
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indic = meter.add_scale_lines(scale, lv.palette_main(lv.PALETTE.BLUE), lv.palette_main(lv.PALETTE.BLUE), False, 0)
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meter.set_indicator_start_value(indic, 0)
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meter.set_indicator_end_value(indic, 20)
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# Add a red arc to the end
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indic = meter.add_arc(scale, 3, lv.palette_main(lv.PALETTE.RED), 0)
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meter.set_indicator_start_value(indic, 80)
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meter.set_indicator_end_value(indic, 100)
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# Make the tick lines red at the end of the scale
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indic = meter.add_scale_lines(scale, lv.palette_main(lv.PALETTE.RED), lv.palette_main(lv.PALETTE.RED), False, 0)
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meter.set_indicator_start_value(indic, 80)
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meter.set_indicator_end_value(indic, 100)
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# Add a needle line indicator
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indic = meter.add_needle_line(scale, 4, lv.palette_main(lv.PALETTE.GREY), -10)
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# Create an animation to set the value
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a = lv.anim_t()
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a.init()
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a.set_var(indic)
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a.set_values(0, 100)
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a.set_time(2000)
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a.set_repeat_delay(100)
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a.set_playback_time(500)
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a.set_playback_delay(100)
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a.set_repeat_count(lv.ANIM_REPEAT.INFINITE)
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a.set_custom_exec_cb(lambda a,val: set_value(indic,val))
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lv.anim_t.start(a)
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