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Update README.md

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Adding build section.
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Pol Henarejos
2022-03-10 18:36:59 +01:00
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@@ -35,6 +35,21 @@ Note that UF2 files are shiped with a dummy VID/PID to avoid license issues (FEF
You can use whatever VID/PID (i.e., 234b:0000 from FISJ), but remember that you are not authorized to distribute the binary with a VID/PID that you do not own. You can use whatever VID/PID (i.e., 234b:0000 from FISJ), but remember that you are not authorized to distribute the binary with a VID/PID that you do not own.
## Build
Before building, ensure you have installed the toolchain for the Pico and the Pico SDK is properly located in your drive.
```
git clone https://github.com/polhenarejos/pico-hsm
cd pico-hsm
mkdir build
cd build
PICO_SDK_PATH=/path/to/pico-sdk cmake .. -DPICO_BOARD=board_type -DUSB_VID=0x1234 -DUSB_PID=0x5678
make
```
Note that `PICO_BOARD`, `USB_VID` and `USB_PID` are optional. If not provided, `pico` board and VID/PID `FEFF:FCFD` will be used.
After `make` ends, the binary file `pico_hsm.uf2` will be generated. Put your pico board into loading mode, by pushing `BOOTSEL` button while pluging on, and copy the UF2 to the new fresh usb mass storage Pico device. Once copied, the pico mass storage will be disconnected automatically and the pico board will reset with the new firmware. A blinking led will indicate the device is ready to work.
## Credits ## Credits
Pico HSM uses the following libraries or portion of code: Pico HSM uses the following libraries or portion of code:
- OpenSC for ASN1 manipulation. - OpenSC for ASN1 manipulation.