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12 changes: 6 additions & 6 deletions src/004-flashing-a-crate-to-chip.md
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# 4. Flashing a crate to a real AVR chip


The [AVRDUDE](https://www.nongnu.org/avrdude/) utility is recommended for flashing the final ELF file to a physical AVR microcontroller.

Flashing a Rust ELF file is no different to flashing a regular AVR-GCC C/C++ generated ELF file.
The [AVRDUDE](https://www.nongnu.org/avrdude/) utility is recommended for flashing the final ELF file to a physical AVR microcontroller.
Flashing a Rust ELF file is no different to flashing a regular AVR-GCC C/C++ generated ELF file. You can learn more about the AVRDUDE project from either of
the following:

* [AVRDUDE Project Homepage](https://www.nongnu.org/avrdude/)
* [LadyADA AVRDUDE Tutorial](http://ladyada.net/learn/avr/avrdude.html)

## Arduino Uno

Connect your Arduino Uno to your computer, and use `avrdude` to flash your crate. The example below uses the output from [the `blink` example](./003.2-example-building-blink.md).
Connect your Arduino Uno to your computer, and use `avrdude` to flash your crate. The example below uses the output from [the `blink` example](./003.3-example-building-blink.md):

```bash
avrdude -patmega328p -carduino -P[PORT] -b115200 -D -Uflash:w:target/avr-atmega328p/release/blink.elf:e
```

where
where:
* `-patmega328p` is the AVR part number
* `-carduino` is the programmer
* `-P[PORT]` is the serial port of your connected Arduino
* On Linux & macOS, replace `[PORT]` with your Arduino's serial port (like `/dev/ttyUSB0`)
* `-b115200` is the baud rate
* `-D` disables flash auto-erase
* `-Uflash:w:target/avr-atmega328p/release/blink.elf:e` writes the `blink.elf` program to the Arduino's flash memory
* `-Uflash:w:target/avr-atmega328p/release/blink.elf:e` writes the `blink.elf` program to the Arduino's flash memory.

For more debugging information, run `avrdude` with one or more `-v` flags.

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