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smoltcp driver for the ENC424J600 SPI Ethernet controller
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README.md

ENC424J600 Driver

Examples

Endless Pinging - tx_stm32f407

This program demonstrates the Ethernet TX capability on an STM32F407 board connected to an ENC424J600 module via SPI. Once loaded and initialised, a specific ping packet is sent (broadcasted) every 100ms. Such a packet has the following properties:

  • Destination MAC Address: ff-ff-ff-ff-ff-ff
  • Source MAC Address: 08-60-6e-44-42-95
  • Destination IP Address: 192.168.1.231
  • Source IP Address: 192.168.1.100
  • Frame Length in Bytes: 64

Note that this program uses ITM for logging output.

How-to

  1. Prepare the Rust and Cargo environment for building and running the program on STM32F4xx Cortex-M platforms.

  2. Install itm on Cargo:

    cargo install itm

    If necessary, add your installation location (~/.cargo/bin by default) to $PATH.

  3. Connect your STM32F407 device to the computer. Without changing any code, you may use an STLink V2 debugger.

  4. Run OpenOCD with the appropriate configuration files (e.g. interface/stlink-v2.cfg, target/stm32f4x.cfg).

  5. With OpenOCD running, build and run this program:

    cargo run --release --example=tx_stm32f407 --features=stm32f407

    Use appropriate GDB commands such as c for continuing.

  6. On a separate console window, monitor and observe the ITM output, which is located at the same directory as you started OpenOCD:

    itmdump -f itm.log -F