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23 lines
829 B
23 lines
829 B
7 years ago
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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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Errata
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------
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*which is an euphemnism for bugs*
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- JP1 - bad footprint, too fine pitch. Can be fixed by soldering the header on the bottom, with slightly bent pins
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- P1 - the SWD connector, same problem, no fix needed or available. Use DFU for flashing
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- Missign NRESET button. Normally not needed, but often missed. You can solder it on the bottom side from one end of R2 to the GND testpoint.
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