---
title: "w5500-regsim"
url: "https://maker.wiznet.io/teddy/projects/w5500regsim/"
markdown_url: "https://maker.wiznet.io/teddy/projects/w5500regsim/md"
type: "UCC: User Created Content"
author: "teddy"
author_url: "https://maker.wiznet.io/teddy/"
original_author: "teddy"
original_url: "https://lib.rs/crates/w5500-regsim"
published: "2022-03-02"
language: "en"
likes: 0
views: 215
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# w5500-regsim

> w5500-regsim

Original author: teddy (source: https://lib.rs/crates/w5500-regsim)

## Components

- Software: **w5500-regsim-rs**: git hub

## Article

## w5500-regsim

Register simulation for the?[Wiznet W5500](https://www.wiznet.io/product-item/w5500/)?internet offload chip.

This implements the?[`w5500_ll::Registers`](https://docs.rs/w5500-ll/latest/w5500_ll/trait.Registers.html)?trait using?[`std::net`](https://doc.rust-lang.org/std/net/index.html)?sockets to simulate the W5500 on your local PC.

This is a best-effort implementation to aid in development of application code, not all features of the W5500 will be fully simulated.

### <https://github.com/newam/w5500-regsim-rs#notes>Notes

This is in an early alpha state, there are many todos throughout the code.

#### <https://github.com/newam/w5500-regsim-rs#not-implemented>Not-implemented

- MR (Mode Register)
  - Wake on LAN
  - Ping block
  - PPPoE mode
  - Force ARP

- INTLEVEL (Interrupt Low Level Timer Register)

- IR (Interrupt Register)

- IMR (Interrupt Mask Register)

- GAR (Gateway IP Address Register)

- SUBR (Subnet Mask Register)

- SHAR (Source Hardware Address Register)

- SIPR (Source IP Address Register)

- INTLEVEL (Interrupt Low Level Timer Register)

- IR (Interrupt Register)

- IMR (Interrupt Mask Register)

- SIR (Socket Interrupt Register)
  - Partial; see SN_IR

- SIMR (Socket Interrupt Mask Register)

- RTR (Retry Time Register)

- RCR (Retry Count Register)

- PTIMER (PPP LCP Request Timer Register)

- PMAGIC (PPP LCP Magic Number Register)

- PHAR (PPP Destination MAC Address Register)

- PSID (PPP Session Identification Register)

- PMRU (PPP Maximum Segment Size Register)

- UIPR (Unreachable IP Address Register)

- UPORT (Unreachable Port Register)

- PHYCFGR (PHY Configuration Register)

- SN_MR (Socket n Mode Register)

- SN_IR (Socket n Interrupt Register)
  - DISCON
  - TIMEOUT
  - SENDOK

- SN_SR (Socket n Status Register)
  - SynSent
  - SynRecv
  - FinWait
  - Closing
  - TimeWait
  - CloseWait
  - LastAck
  - Macraw

- SN_MSSR (Socket n Maximum Segment Size Register)

- SN_TOS (Socket n IP TOS Register)

- SN_TTL (Socket n IP TTL)

- SN_RXBUF_SIZE (Socket n Receive Buffer Size Register)

- SN_TXBUF_SIZE (Socket n Transmit Buffer Size Register)

- SN_IMR (Socket n Interrupt Mask Register)

- SN_FRAG (Socket n Fragment Offset in IP Header Register)

- SN_KPALVTR (Socket n Keep Alive Timer Register)

Believe it or not that is not simply a list of all registers.

---

Source: https://maker.wiznet.io/teddy/projects/w5500regsim/