Command line implementation of the hf2 flashing over hid protocol commonly used in by Microsoft MakeCode and Adafruit hardware.
cargo install hf2-cli
Utilizes the hidapi crate which doesnt appear to need any dependencies.
On linux if building libusb fails you can also try setting up the native libusb library where it can be found by pkg-config or vcpkg.
On mac, as of Catalina you will get a permissions prompt and must follow directions to allow "Input Monitoring" for the Terminal application.
``` $ hf2 hf2 0.1.0 Microsoft HID Flashing Format
USAGE:
hf2 [OPTIONS]
FLAGS: -h, --help Prints help information -V, --version Prints version information
OPTIONS:
-p
-v
SUBCOMMANDS:
bininfo This command states the current mode of the device
dmesg Return internal log buffer if any. The result is a character array.
flash flash
help Prints this message or the help of the given subcommand(s)
info Various device information. The result is a character array. See INFOUF2.TXT in UF2
format for details.
reset-into-app Reset the device into user-space app.
reset-into-bootloader Reset the device into bootloader, usually for flashing
verify verify
It will attempt to autodetect a device by sending the bininfo command any whitelisted devices it finds and using the first one that responds or you can specify pid and vid (before the subcommand) instead.
hf2 -v 0x239a -p 0x003d flash -f neopixelrainbow.bin -a 0x4000
```
If it cant find a device, make sure your device is in a bootloader mode ready to receive firmware.
thread 'main' panicked at 'Are you sure device is plugged in and in bootloader mode?: OpenHidDeviceError', src/libcore/result.rs:1165:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
On the PyGamer, 2 button presses enables a blue and green screen that says PyGamer and also generally creates a flash drive which you should be able to see (though this doesn't use that method).
If you find another error, be sure to run with debug to see where in the process it failed and include those logs when reporting
RUST_LOG=debug hf2 -v 0x239a -p 0x003d flash -f neopixel_rainbow.bin -a 0x4000