### Install Dependencies

Source: https://github.com/openshock/firmware/blob/develop/README.md

Install project dependencies using pip. Ensure you have Python and pip installed.

```bash
pip install -r requirements.txt
```

--------------------------------

### Generate CA Certificate Bundle

Source: https://github.com/openshock/firmware/blob/develop/certificates/README.md

Run this script to download and verify the base CA certificate bundle. It also handles optional custom certificates.

```sh
python3 gen_crt_bundle.py
```

--------------------------------

### Flash OpenShock Firmware

Source: https://github.com/openshock/firmware/blob/develop/RELEASE.md

Use this command to write the OpenShock firmware binary to your microcontroller's flash memory. Ensure you have the correct firmware file name for your board and version.

```bash
esptool write_flash 0x0 OpenShock_[board]_[version].bin
```

--------------------------------

### Custom Certificate File Format

Source: https://github.com/openshock/firmware/blob/develop/certificates/README.md

Custom CA certificates must be placed in the custom_certs/ directory and each file must contain exactly one PEM certificate block.

```text
custom_certs/
```

--------------------------------

### Verify CA Certificate Bundle Checksum

Source: https://github.com/openshock/firmware/blob/develop/certificates/README.md

Manually compare the SHA-256 checksum of the downloaded cacert.pem with the one published on curl.se. This step is mandatory for establishing external trust.

```sh
sha256sum cacert.pem
```

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