added prototype f072 materials and new readme

master
Ondřej Hruška 6 years ago
parent c9079de278
commit 5724d56403
Signed by: MightyPork
GPG Key ID: 2C5FD5035250423D
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      LICENSE.txt
  2. 8
      README.md
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      f072-hub-r.1/GEX_Dongle.PrjPCB
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      f072-hub-r.1/GEX_Dongle.PrjPCBStructure
  5. BIN
      f072-hub-r.1/GEX_Dongle.SchDoc
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      f072-hub-r.1/GEX_Dongle.pdf
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      f072-hub-r.1/GEX_IDC.PcbDoc
  8. 22
      f072-hub-r.1/README.md
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      f072-hub-r.1/bugfixes.jpg
  10. BIN
      f072-hub-r.1/gerbers_oshpark.zip
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Creative Commons Attribution Share Alike
https://creativecommons.org/licenses/by-sa/3.0/

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# gex-hardware
GEX custom hardware sources and docs
GEX hardware
============
This repository contains source files and materials for all custom GEX hardware.
[CC BY SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/)

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GEX F072 hub prototype board
============================
This board was the first custom PCB for GEX.
To flash a firmware, remove JP1, reset and flash using DFU. Replace JP1 and reset for normal operation.
Press and hold S1 to enable USB VFS with config files. Same process for locking and persisting to Flash.
Settings (but not system settings) can also be changed via the USB API.
![photo](photo.jpg)
Errata
------
*which is an euphemnism for bugs*
- JP1 - bad footprint, too fine pitch. Can be fixed by soldering the header on the bottom, with slightly bent pins
- P1 - the SWD connector, same problem, no fix needed or available. Use DFU for flashing
- 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.
![photo](bugfixes.jpg)

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