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23 lines
895 B
Plaintext
23 lines
895 B
Plaintext
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What: /sys/class/leds/<led>/hw_pattern
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Date: September 2018
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KernelVersion: 4.20
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Description:
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Specify a hardware pattern for the SC27XX LED. For the SC27XX
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LED controller, it only supports 4 stages to make a single
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hardware pattern, which is used to configure the rise time,
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high time, fall time and low time for the breathing mode.
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For the breathing mode, the SC27XX LED only expects one brightness
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for the high stage. To be compatible with the hardware pattern
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format, we should set brightness as 0 for rise stage, fall
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stage and low stage.
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Min stage duration: 125 ms
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Max stage duration: 31875 ms
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Since the stage duration step is 125 ms, the duration should be
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a multiplier of 125, like 125ms, 250ms, 375ms, 500ms ... 31875ms.
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Thus the format of the hardware pattern values should be:
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"0 rise_duration brightness high_duration 0 fall_duration 0 low_duration".
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