### Clone and Navigate to USB/IP Runner Directory

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/usbip.md

Clone the firmware repository and change into the usbip directory to begin the setup process.

```bash
git clone https://github.com/Nitrokey/nitrokey-3-firmware.git
cd runners/usbip
```

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

### Execute the USB/IP Runner

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/usbip.md

Start the USB/IP device simulation by running the compiled program.

```bash
cargo run
```

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

### Setup, Test, and Cleanup Commands for SSH Authentication

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/ssh/troubles/README.md

These commands are used to manage the build and testing process for SSH authentication. 'make build' sets up the environment, 'make test' runs the authentication tests, and 'make clean' resets the system by removing keys and the built image.

```bash
# to set everything up
$ make build

# to run the actual SSH auth test
$ make test

# to reset - remove keys, remove built image
$ make clean
```

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

### Start J-Link GDB Server

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/utils/lpc55-builder/README.md

Start the J-Link GDB server for interactive debugging. This requires the J-Link Software and Documentation Pack to be installed.

```bash
make jlink
```

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

### Install Rust Toolchain for Embedded Development

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md

Install the necessary Rust target for embedded development on the Nitrokey 3.

```bash
$ rustup target add thumbv8m.main-none-eabi
```

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

### Run Firmware and Enter Debugger

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/utils/lpc55-builder/README.md

Flash and run the firmware, then enter the GDB debugger. Useful for logging via semihosting.

```bash
make run
```

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

### Build All Artifacts

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/utils/nrf-builder/README.md

Use this command to build all firmware artifacts. It is equivalent to running 'make build'.

```bash
make

```

```bash
make build

```

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

### Provision Test Keys and Certificates

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/utils/nrf-builder/README.md

Command to provision test keys and certificates onto the device. This is typically done after flashing the provisioner.

```bash
make provision-keys

```

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

### Run Firmware with Semihosting and Trace

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/utils/lpc55-builder/README.md

Run the firmware with specific features enabled, such as logging via semihosting and trace. This command allows for more detailed debugging output.

```bash
make run FEATURES=log-semihosting,log-traceP
```

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

### Verify Firmware Provisioning

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md

Test the provisioned firmware by checking UUID, version, and FIDO2 functionality. Expect a FIDO2 failure due to missing batch keys.

```bash
$ nitropy nk3 test --exclude provisioner
```

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

### Full Deployment Round

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/utils/nrf-builder/README.md

Executes a complete firmware deployment cycle, including building, flashing all components, and provisioning keys.

```bash
make full-deploy

```

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

### Build LPC55 Firmware

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/utils/lpc55-builder/README.md

Use this command to build the LPC55 firmware. Ensure you are in the lpc55-builder directory.

```bash
make build
```

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

### View RTT Debugging Outputs

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/utils/nrf-debugging/README.md

Flash the device and then connect to the debugger to view RTT outputs. Ensure the device is flashed before connecting to the debugger.

```bash
# - flash the device (make -C ../nrf-builder flash-develop)

# inside a terminal, connect to the debugger
make ocd

# inside another terminal, show rtt outputs
make rtt
```

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

### Build Nitrokey 3 Test Firmware

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md

Compile the Nitrokey 3 test firmware by activating the 'test' feature. Ensure you have the necessary build environment set up.

```bash
make -C runners/embedded build-nk3xn FEATURES=test
```

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

### Provision Nitrokey 3 Firmware

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md

Build, configure, and flash the release version of the Nitrokey 3 firmware.

```bash
$ make -C utils/lpc55-builder provision-release
```

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

### Compile Nitrokey 3 Firmware

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md

Compile the Nitrokey 3 firmware using the provided Makefile.

```bash
$ make -C runners/embedded build-nk3xn
```

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

### Attach the Simulated USB/IP Device

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/usbip.md

Load the vhci-hcd kernel module and attach the simulated device to the host system. This command requires root privileges.

```bash
make attach
```

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

### Build the USB/IP Runner

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/usbip.md

Compile the USB/IP runner using Cargo, the Rust package manager.

```bash
cargo build
```

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

### Fetch and Update Nitrokey 3 Firmware Release Candidate

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/testing.md

Use this command sequence to download a specific release candidate firmware image and then update your Nitrokey 3 device. Ensure you replace `<variant>` and `<version>` with the appropriate values for your device and the desired release candidate.

```bash
$ nitropy nk3 fetch-update --variant lpc55 --version v1.0.3-rc.1
Command line tool to interact with Nitrokey devices 0.4.26
Download v1.0.3-rc.1: 100%|██████████████████████████████████████████| 305k/305k [00:00<00:00, 5.63MB/s]
Successfully downloaded firmware release v1.0.3-rc.1 to ./firmware-nk3xn-lpc55-v1.0.3-rc.1.sb2
$ nitropy nk3 update firmware-nk3xn-lpc55-v1.0.4-rc.1.sb2
```

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

### Run J-Link Debugger for Nitrokey 3

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md

Execute the J-Link debugger command to flash the firmware and prepare for debugging with gdb. Ensure JP2 is closed before running.

```bash
make -C utils/lpc55-builder jlink
```

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

### Clone Firmware Repository

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md

Clone the Nitrokey 3 firmware repository to your local machine.

```bash
$ git clone https://github.com/nitrokey/nitrokey-3-firmware
$ cd nitrokey-3-firmware
```

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

### Flash and Execute Firmware with GDB

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md

Flash the Nitrokey 3 firmware and execute it using gdb via the J-Link debugger. This command is used after setting up the J-Link connection.

```bash
make -C utils/lpc55-builder run
```

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

### Run GDB for Debugging

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/utils/nrf-debugging/README.md

Connect to the debugger and then run GDB. This is used for interactive debugging sessions.

```bash
make ocd
make it
```

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

### Flash Specific Parts

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/utils/nrf-builder/README.md

Commands to flash individual components of the firmware. Use these for targeted updates or debugging.

```bash
make flash-provisioner

```

```bash
make flash-firmware

```

```bash
make flash-bootloader

```

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

### Dump Filesystem (LFS)

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/utils/nrf-debugging/README.md

Dumps the filesystem using the 'lfs_fast' command. Note that the device will be stuck after this operation.

```bash
make lfs_fast

# after this operation the device is stuck!
```

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

### Program J-Link Firmware

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md

Program the J-Link debugger firmware using the lpcscrypt tool. This step is necessary if the SEGGER J-Link PLUS device does not appear in lsusb output.

```bash
/usr/local/lpcscrypt/scripts/program_JLINK
```

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

### Clean Build Artifacts

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/utils/nrf-builder/README.md

Removes all generated build artifacts, cleaning the project directory. Use this before a fresh build if needed.

```bash
make clean

```

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

### Run USB/IP Runner with CCID Feature Enabled

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/usbip.md

Execute the USB/IP runner with the 'ccid' feature enabled, which is necessary for using the CCID transport protocol. This may require stopping pcscd services beforehand.

```bash
cargo run --features ccid
```

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

### Update Nitrokey 3 Firmware

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md

Re-build and update the Nitrokey 3 firmware, potentially requiring touch button interaction.

```bash
$ make -C utils/lpc55-builder flash FEATURES=develop
```

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

### Flash Nitrokey 3 Test Firmware

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md

Update the Nitrokey 3 to the test firmware using the lpc55-builder utility. This requires the 'develop' and 'test' features to be enabled.

```bash
make -C utils/lpc55-builder flash FEATURES=develop,test
```

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

### Identify Nitrokey 3 Hardware Variant

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/testing.md

Reboot your Nitrokey 3 into bootloader mode and use this command to list connected devices and identify their hardware variant. This is crucial for selecting the correct firmware image during updates.

```bash
$ nitropy nk3 list
Command line tool to interact with Nitrokey devices 0.4.26
:: 'Nitrokey 3' keys
/dev/hidraw4: Nitrokey 3 Bootloader (LPC55)
```

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

### Reset Nitrokey 3 Device

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/lpc55-quickstart.md

Reset the Nitrokey 3 device to a clean state before flashing.

```bash
$ make -C utils/lpc55-builder reset
```

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

### Patching a Dependency in Cargo.toml

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/contributing.md

Use this method to override a dependency with a forked version from a Git repository when upstream changes are not feasible in time. Ensure the patch is specific to the required dependency.

```toml
[patch."https://github.com/trussed-dev/trussed"]
trussed = { git = "https://github.com/Nitrokey/trussed", branch = "wink" }
```

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

### Stop pcscd Services for CCID Feature

Source: https://github.com/nitrokey/nitrokey-3-firmware/blob/main/docs/usbip.md

Before activating the 'ccid' feature, it is recommended to stop the pcscd service and socket to avoid potential conflicts or issues.

```bash
sudo systemctl stop pcscd.service pcscd.socket
```

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