Running LwIP TCP/IP Stack on STM32 Microcontroller

• Microcontroller: STM32F767
• Development Board: Nucleo-144

Requirements

• STM32CubeIDE
• lwIP TCP/IP Stack
• tcpdump to capture network

Build & Flash & Run

• Build:
  • Regular build project via STM32CubeIDE
• Flash & Run:
  • Flash into microcontroller via STM32CubeIDE (via stlink or jlink)
  • Run via reset button of the board or debug interface of STM32CubeIDE

Projects

• lwip_203
  • Project generated via STM32CubeIDE and its configurator (cubeMX)
  • FreeRTOS based
  • When DHCP Server assigns an IP Address to the board then you can test communication via ping / ICMP.
• lwip_212
  • lwip sources of lwip_203 is updated with the latest version lwip of now, 2.1.2.
  • All functionalities are the same as lwip_203's.

Working Principle

When it starts running, LD3 RED Led will start blinking
DHCP Client will be started so, DHCP Discovery packets should be seen on your network.

Testing

• You should see DHCP discovery messages via tcpdump (with -vv flag and port / protocol filter) or dhcp dump:
  
• You should have response for your ping.