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Altera_Forum's avatar
Altera_Forum
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13 years ago

Data Logging from FPGA to PC

Hi !!!

I am still a newbie to digital world.

I wish to use the UART in SOPC to send some data to (RS485 interface) my laptop for logging purpose.

Laptop does not have a RS485 terminal so i am planning a RS485-USB converter.

Now if all this works i am lost as to how i must read the data on this using C or VB.

Kindly let me know the plan would work ??? if so how to read the data using C or VB ? i need some direction.

thanks

santhosh:confused::confused::confused:

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    13 years ago

    Why RS485 and not RS232 or just the UART signals directly from the FPGA?

    FTDI have a series of cables that you might be able to use. For example,

    http://www.digikey.com/product-detail/en/c232hd-ddhsp-0/768-1011-nd/2767783

    This cable can be connected directly to 3.3V logic level pins on the FPGA, and those pins can internally connect to a UART inside the FPGA.

    At that point, you can use standard serial communications on your PC.

    FTDI show RS485 connections in their data sheets, so they may also have pre-made cables that support RS485. Check out their web site www.ftdichip.com.

    Cheers,

    Dave