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README: doc usb
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README.md
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README.md
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@ -77,3 +77,14 @@ The scope of this setting is per TCP session.
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| `save` | Save configuration to EEPROM |
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| `reset` | Reset the device |
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| `ipv4 <X.X.X.X>` | Configure IPv4 address |
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## USB
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The firmware includes experimental support for acting as a USB-Serial
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peripheral. Debug logging will be sent there by default (unless build
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with logging via semihosting.)
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**Caveat:** This logging does not flush its output. Doing so would
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hang indefinitely if the output is not read by the USB host. Therefore
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output will be truncated once buffers are full.
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