UDP server on STM32F103C8 and ENC28J60

Sources

1. Series of articles on working with ENC28J60 chip and TCP/IP stack
2. STM3232F103C8 reference manual

Burn firmware

openocd -f /usr/share/openocd/scripts/interface/stlink-v2.cfg -f /usr/share/openocd/scripts/target/stm32f1x.cfg -c "init; reset halt; flash write_image erase test.hex; reset; exit"

Fire up OpenOCD

Linux

openocd -f /usr/share/openocd/scripts/interface/stlink-v2.cfg -f /usr/share/openocd/scripts/target/stm32f1x.cfg

Windows

openocd -f "C:/xpack-openocd-0.11.0-5/scripts/interface/stlink-v2.cfg" -f "C:/xpack-openocd-0.11.0-5/scripts/target/stm32f1x.cfg"