Finish Kicad Schematics

light/README.md

@@ -4,3 +4,42 @@ A tool to connect to the computer debug interfaces was developed. It can either
 
 It's based around an FT4232 for ease of development and broad software tool support.
 
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+\# FTDI Channel usages:
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+Channel 1 is for:
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+JDB11, SPI interface
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+Channel 2 is for:
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+JSPI, SPI interface
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+Channel 3 is for:
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+JECDB, EC uart pins
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+CCD (either EC or AP, depending on which type-C port the user plugged it in)
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+Channel 4 is for:
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+JECDB, AP uart pins`
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