GEX custom hardware sources and docs
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GEX F072 hub prototype board
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This board was the first custom PCB for GEX.
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To flash a firmware, remove JP1, reset and flash using DFU. Replace JP1 and reset for normal operation.
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Press and hold S1 to enable USB VFS with config files. Same process for locking and persisting to Flash.
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Settings (but not system settings) can also be changed via the USB API.
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rev.2 changes
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The BOOT jumper is now inside the A connector,
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and the function is reversed - insert a jumper between BOOT and 3V3 to enter bootloader.
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