gnwmanager 0.22.1

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GnWManager

GnWManager is THE game-and-watch device manager. GnWManager is a command line tool who's responsible for getting firmware onto your device, managing the filesystem, and other device administrative tasks.

GnWManager accomplishes this via a small bundled pre-compiled firmware that gets executed from the STM32's RAM.

Features

• Simple installation.
• Works on all operating systems (Linux, MacOS, Windows).
• Automatic debugging probe detection.
  • No need to specify if you have a stlink, jlink, CMSIS-DAP, or Raspberry Pi.
• Fast internal and external flash firmware flashing.
  • Hardware-accelerated hashing for rapid duplicate discovery.
    • Only syncs changed data.
    • Minimizes flash erases and writes, extending flash lifespan.
  • Double buffered, asynchronous, LZMA-compressed transfers for maximum speed.
• Complete filesystem management.
  • Backup and restore files.
  • Interactive filesystem explorer.
• Automatic Real-Time-Clock (RTC) configuration.
• Developer tools:
  • Easily monitor device printf statements and launch GDB sessions.
  • Capture screenshots, regardless of the running firmware.

Tutorials

Tutorials useful for typical end-users

• Installation
• Device Unlocking
• Binary Flashing
• Filesystem Management
• Extracting Screenshots

Tutorials useful for developers

• Device Locking
• Stdout Monitoring
• Flash Erasing

Compatibility

GnWManager works with all major operating systems: Windows, Mac, and Linux. GnWManager is also compatible with the following probes:

1. Raspberry Pi Pico (Recommended)
2. STLink
3. JLink
4. DAPLink
5. Raspberry Pi (GPIO)

Raspberry Pi Pico

All Raspberry Pi Picos can be transformed into programmers via the picoprobe project.

1. Download picoprobe.uf2 from picoprobe releases.
2. Hold BOOT button on the pico and plug it into the computer. It should show up as a USB drive. Drag and drop picoprobe.uf2 to it.
3. Hook up the 3 wires (GND, GP2, GP3) to (GND, SDCLK, SWDIO), respectively.

STLink

Hook up your STLink to your game and watch as follows:

STLink Clone

Attention, Pinout can be different:

Raspberry Pi (GPIO)

Hook up your Raspberry Pi to your game and watch as follows:

Usage

To see available commands, run gnwmanager --help.

$ gnwmanager --help

 Usage: gnwmanager [OPTIONS] COMMAND [ARGS]...

 Game And Watch Device Manager.
 Manages device flashing, filesystem management, peripheral configuration, and more.

╭─ Options ──────────────────────────────────────────────────────────────────────────╮
│ --version    -v                  Print gnwmanager version.                         │
│ --frequency  -f      INT_PARSER  Probe frequency. [default: None]                  │
│ --backend    -b      [pyocd]     OCD Backend. [default: pyocd]                     │
│ --help                           Show this message and exit.                       │
╰────────────────────────────────────────────────────────────────────────────────────╯
╭─ Commands ─────────────────────────────────────────────────────────────────────────╮
│ debug             GnWManager internal debugging tools                              │
│ disable-debug     Disable the microcontroller's debug block.                       │
│ erase             Erase a section of flash.                                        │
│ flash             Flash firmware to device.                                        │
│ format            Format device's filesystem.                                      │
│ gdb               Launch a gdbserver and connect to it with gdb.                   │
│ gdbserver         Launch a gdbserver.                                              │
│ install           Install third party executables, like openocd.                   │
│ lock              Re-lock your device.                                             │
│ ls                List contents of device directory.                               │
│ mkdir             Create a directory on device.                                    │
│ monitor           Monitor the device's stdout logging buffer.                      │
│ mv                Move/Rename a file or directory.                                 │
│ pull              Pull a file or folder from device.                               │
│ push              Push file(s) and folder(s) to device.                            │
│ sdpush            Push file(s) to SD Card connected to device.                     │
│ screenshot        Capture and transfer screenshots from device.                    │
│ shell             Launch an interactive shell to browse device filesystem.         │
│ start             Start firmware at location.                                      │
│ tree              List contents of device directory and its descendants.           │
│ unlock            Backs up and unlocks a stock Game & Watch console.               │
╰────────────────────────────────────────────────────────────────────────────────────╯

Need Help?

If you need any help, either open up a github issue here, or join the stacksmashing discord for live help. When sharing gnwmanager output, it is recommended to increase the verbosity level:

• Via CLI argument: gnwmanager --verbosity=debug
• Via environment variable export GNWMANAGER_VERBOSITY=debug

Developer Installation

If developing for GnWManager, perform the following steps to setup your local environment. We use pre-commit to run linting, and uv for python management.

git clone [e-mail]:BrianPugh/gnwmanager.git
cd gnwmanager
uv sync  # Creates a virtual environment and installs dependencies.
uv run pre-commit install  # Ensures linting passes prior to committing
make -j4  # Builds stm32 firmware binaries.

When changing C sources, make must be re-ran to update the binaries located at:

gnwmanager/firmware.bin
gnwmanager/unlock.bin