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TMS320F28335 Ethernet connection.

Eneko Unamuno
Prodigy 60 points
Other Parts Discussed in Thread: TMS320F28335

Hello,

I am new to this community so I am not sure if I should post this question here. If this is not the case do not hesitate to tell me.

I own a TMS320F28335 Experimenter Kit and I would like to connect it to Ethernet so that I can remotely visualize parameters and control the unit.

I have been looking for some RS232-to-Ethernet/UART-to-Ethernet commercial converters but I am not really sure if I can use them to connect to Ethernet with a dynamic IP.

Is there any simple (and cheap) way to perform this connection?

All the suggestions will be appreciated. Many thanks in advance.

Eneko

  • 0
    TI__Guru 62975 points

    Eneko,

    You can search on TI Designs if you are looking for a reference design that can be assembled onto a PCB with your F28335.  Here's one result: http://www.ti.com/tool/TIDA-00226?keyMatch=serial%20to%20ethernet&tisearch=tidesigns

    Otherwise, you should be able to find pre-assembled modules fairly easily.  I see some on Amazon.

    -Tommy

  • 0 in reply to tlee
    Prodigy 60 points
    Hi Tommy,

    First of all thanks for your time, I appreciate your help.
    I would like to find something that is already assembled as I don't have much time to reproduce the designs you mention, although it would be the best practice I guess.

    I have also found some pre-assembled circuits, but I am not sure if they will have full compatibility with my board. Surfing the web I have read that SCI communication for example is not standard and each manufacturer uses a certain configuration.

    That is why I am not sure if these pre-assembled modules will work or if I will have to adapt a certain part of the code to make them work. Do you recommend any communication port in this case?

    Eneko
  • 0 in reply to Eneko Unamuno
    TI__Guru 62975 points
    Eneko,

    I have no experience with these adapters, but I would expect that nearly any module with a standard RS232 or UART interface will be able to communicate with SCI. You just need to take care to match or shift the voltage levels.

    Do you have any specific parameters that you are worried about? My guess is that the variations that you find may have more to do with the programmable features of the interface such as baud rate, parity, word size, start/stop, etc. All of these are software configurable on SCI.

    -Tommy
  • 0 in reply to tlee
    Prodigy 60 points

    Hello,

    If I am not wrong I can use a UART-to-Ethernet converter without making any modifications in the voltage levels, right?

    I have found an interesting and cheap module that performs this conversion: 

    Although it does not have dynamic IP capability I think it is suitable for my application and I can configure it to match the F28335 boards configuration.

    I think I will buy one and see if it works. Thanks for your help, I will let you know if I make some progress.

    Eneko

  • 0 in reply to Eneko Unamuno
    TI__Guru 62975 points
    Eneko,

    Yes, you should be able to use 3.3V UART to communicate with SCI. I hope it works well for you.

    -Tommy
  • 0 in reply to Eneko Unamuno
    Prodigy 70 points
    Hi Eneko, is the Ethernet module working now? I am doing a similar implementation in which I want to try with the SPI to Ethernet converter. Just wondering about your experience.

    Thanks,

    CLai
  • 0 in reply to Chunyan Lai7
    Prodigy 60 points

    Hello, I've been not able to test it yet, but I am willing to use it soon. I'll let you know as soon as I try it.

    Best regards,

    Eneko