In this example we will use the DNS system to resolve the IP address of a host name (domain name like example.com) and then print it on to the serial terminal. Thats it.
The code is written to run on a STM32F051 ARM Cortex M0 MCU. The W5500 is attached to the SPI Port and shown in table below.
| W5500 | STM32 |
|---|---|
| MISO | PA6 |
| MOSI | PA7 |
| SCLK | PA5 |
| SCS | PA1 |
| RST | PA0 |
| INT | NC |
NC=No Connection SCS=Chip Select (Active Low)
To view the debug output of the program we need a USB to Serial convertor like FT232RL (3.3V Version only) The debug messages comes out on the TX pin of the USART2 peripheral of the STM32F051. This is PA2. The baud rate is 38400. User RealTerm to view the outputs.
You will need (Free from ST Microelectronics) to compile, build, flash (burn) and debug this project.
To learn more about w5500 Ethernet controller and its interface with STM32, please subsribe to our course on Udemy. Udemy's course on W5500 Interfacing