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Ethernet connectivity

NIKET AGRAWAL
Intellectual 580 points


I have MSP-FET430U80 target board and I want to interface it with the ethernet controller IC (wiznet W5100) along with the required circuitory in order to control my application through a web page.Basically wiznet will host the web page.Can you help me out regarding the necessary interfacing?

Thanks.

  • 0
    Guru 227245 points

    A quick look at the Wiznet W5100 shows that the controller has an SPI interface for data exchange. I don't know the high-level protocol, but SPI itself is quite simple. Almos tall MSPs have hardware support for SPI, in your case the USCI module. See the users guide, USCI module, SPI mode.

    SPI usually requires 4 signal lines (and GND): clock, master out slave in (MOSI/SIMO), slave out master in (MISO/SOMI) and a chip select line that indicates that the master selects a specific slave (SPI is a bus with one master and mutiple slaves, each with its own chip select line). The chip select is a normal, software controlled GPIO signal.

    There are example codes for SPI available, and several threads in this forum.

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