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@@ -169,3 +169,14 @@ configured voltage, the Sink will negotiate it, then turn on its output and
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blink the LED three times to indicate success. If the supply cannot output
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enough power, the Sink will turn its LED on solid to indicate failure, and
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leave its output turned off.
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+
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+### Status LED descriptions
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+LED State | Mode | Meaning
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+---------------------|-------|---------------------------------------------------
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+Fast blink (4/sec) | Sink | Negotiating USB Power Delivery contract
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+Medium blink (2/sec) | Sink | USB Power Delivery contract established, output on
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+Off | Sink | Output on
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+On | Sink | Unable to get configured power from source
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+Slow blink (1/sec) | Setup | Running in setup mode
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+Fast blink (4/sec) | Setup | `identify` command run
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