WIZnet W5500 Ethernet Shield
Overview
WIZnet W5500 Ethernet Shield [2] is an Arduino connector shield designed using the WIZnet W5500 chip. It supports both 3.3V & 5V operation and is compatible with Arduino and ARM mbed platforms.
The shield features:
W5500 [1] hardwired TCP/IP Ethernet controller with integrated 10/100 Ethernet MAC & PHY,
32 KiloBytes internal memory for socket buffers (8 independent sockets),
SPI serial interface with speeds up to 80MHz,
Full TCP/IP stack support (TCP, UDP, IPv4, ICMP, ARP, IGMP, PPPoE),
Support Auto Negotiation (Full/Half duplex, 10/100-based),
Wake-on-LAN (WOL) and Power Down Mode for energy efficiency,
User-selectable GPIO pins for module stacking,
Micro SD card slot with FAT16/FAT32 support,
I2C interface,
UART interface,
RJ-45 connector with integrated transformer.
WIZnet W5500 Ethernet Shield
Pins Assignment of the W5500 Shield
Shield Connector Pin |
Function |
|---|---|
RST |
Reset (Ethernet Shield and Arduino) |
D2 |
Interrupt Output (default, with 2-3 short) |
D10 |
SPI Chip Select (user-selectable) |
D11 |
SPI MOSI (Master Out Slave In) |
D12 |
SPI MISO (Master In Slave Out) |
D13 |
SPI Clock (SCK) |
Note
The W5500 shield supports user-selectable GPIO configuration. The interrupt pin is configurable - by default it uses D2 (with pins 2-3 shorted), but can be reassigned to other Dx pins by soldering a 0R resistor to the desired pin. The chip select pin is also user-selectable for module stacking capability.
Requirements
This shield can only be used with a board that provides a configuration for Arduino connectors and defines node aliases for SPI and GPIO interfaces (see Shields for more details).
Note
When using with 5V platforms, the SD card may not operate stably. For secure SD card operation with 5V platforms, it is recommended to add a buffer and 100nF capacitor.
Programming
Set --shield wiznet_w5500 when you invoke west build. For example:
# From the root of the zephyr repository
west build -b nrf52840dk/nrf52840 --shield wiznet_w5500 samples/net/dhcpv4_client