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TMS320F28379D: Unable to interface Wiznet's W5100s SPI to ethernet module with F28379D

TMS320F28379D: Unable to interface Wiznet's W5100s SPI to ethernet module (wiz810sio specifically) with F28379D Launchpad/Daughter Card

andrew

Published December 16, 2025

6 UCC

Original author: Avyay SahOriginal source (new tab)

TMS320F28379D: Unable to interface Wiznet's W5100s SPI to ethernet module with F28379D

Components

Hardware components
W5100S

WIZnet - W5100S

x 1

LAUNCHXL-F28379D C2000 Delfino LaunchPad

Texas Instruments - LAUNCHXL-F28379D C2000 Delfino LaunchPad

x 1

Project description

πŸ”Ž Context A developer using a Texas Instruments TMS320F28379D (C2000 series) LaunchPad tried to communicate with WIZ810Sio, and seeking help from the TI community due to below issues. SPI configuration mismatch Hardware reset sequence Timing issues Or compatibility limitations of TI’s SPI peripheral with the WIZnet module. This post is valuable because it highlights integration challenges when pairing industrial TI MCUs with WIZnet Ethernet controllers. πŸ§ͺ What the User Tried The developer reported: βœ… They properly wired SPI: MOSI MISO SCK CS RESET pin βœ… SPI settings used: 20 MHz clock CPOL…

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