hen I started using the STM32 I discovered a world. They are powerful with a lot of features, but they have lacks a network connection. This can be resolved with a w5500 module, a quite powerful device that allows a wired connection. But another problem is that the device does not provide an SSL connection and in a trusted world like this, It’s another big limit. But exist a solution also for that problem, OPEnS develop a wrapper that contains in one packet all BearSSL implementation, and this, with a quiet amount of resources, allows standard Arduino Ethernet to use secure connections.
Devices
The W5500 chip is a Hardwired TCP/IP embedded Ethernet controller that provides an easier Internet connection to embedded systems. W5500 enables users to have Internet connectivity in their applications just by using the single chip in which TCP/IP stack, 10/100 Ethernet MAC, and PHY are embedded.
WIZnet‘s Hardwired TCP/IP is the market-proven technology supporting TCP, UDP, IPv4, ICMP, ARP, IGMP, and PPPoE protocols. W5500 embeds the 32Kbyte internal memory buffer for the Ethernet packet processing. If you use W5500, you can implement the Ethernet application by adding a simple socket program. It’s a faster and easier way rather than using any other Embedded Ethernet solution. Users can use eight independent hardware sockets simultaneously.
SPI (Serial Peripheral Interface) is provided for easy integration with the external MCU. The W5500’s SPI supports 80 MHz speed and a new efficient SPI protocol for high-speed network communication. To reduce the system’s power consumption, W5500 provides WOL (Wake on LAN) and power-down mode.
Features
- Supports Hardwired TCP/IP Protocols: TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
- Supports 8 independent sockets simultaneously
- Supports Power-down mode
- Supports Wake on LAN over UDP
- Supports High-Speed Serial Peripheral Interface(SPI MODE 0, 3)
- Internal 32Kbytes Memory for TX/RX Buffers
- 10BaseT/100BaseTX Ethernet PHY embedded
- Supports Auto-Negotiation (Full and half-duplex, 10 and 100-based )
- Not supports IP Fragmentation
- 3.3V operation with 5V I/O signal tolerance
- LED outputs (Full/Half duplex, Link, Speed, Active)
- 48 Pin LQFP Lead-Free Package (7x7mm, 0.5mm pitch)
There is a wide series of w5500 devices, but the most popular are 2 in particular.
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