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USB to RS232

s1buell

Does anyone here have any experience with this topic?

 

I`m going from a TUSB2077APTRTUSB2077APTR controller to two FT232RL-REELFT232RL-REEL IC`s just to test this prototype idea.

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  • It looks as if you want an Arduino with 8 RS232 ports.

     

    The neatest way to do this is to use an FPGA - something fairly small will do. You can connect the FPGA to the Arduino via UART or SPI at logic level (care needed if it's a 5V Arduino).

     

    If you need true RS232 ports at correct levels then you'll need level shifters like the TI device you mentioned.

     

    The FPGA work will be challenging if you've never done any before, but you would be able to get true simultaneous operation of all 8 ports with buffering and good control of latency.

     

    If you are more used to processors consider using a fast ARM based part which will be able to do 8 UARTs in software at 9600 baud quite easily.

     

    As is so often the case, it would be much easier to make good suggestions if you would describe what you actually want to achieve in a bit more detail.

     

    For example, you might be able to use an ST Nucleo board (NUCLEO-F429ZI would be suitable)

    with a nice fast processor to do everything you need, including simulate 8 UARTS.

     

    MK

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  • It looks as if you want an Arduino with 8 RS232 ports.

     

    The neatest way to do this is to use an FPGA - something fairly small will do. You can connect the FPGA to the Arduino via UART or SPI at logic level (care needed if it's a 5V Arduino).

     

    If you need true RS232 ports at correct levels then you'll need level shifters like the TI device you mentioned.

     

    The FPGA work will be challenging if you've never done any before, but you would be able to get true simultaneous operation of all 8 ports with buffering and good control of latency.

     

    If you are more used to processors consider using a fast ARM based part which will be able to do 8 UARTs in software at 9600 baud quite easily.

     

    As is so often the case, it would be much easier to make good suggestions if you would describe what you actually want to achieve in a bit more detail.

     

    For example, you might be able to use an ST Nucleo board (NUCLEO-F429ZI would be suitable)

    with a nice fast processor to do everything you need, including simulate 8 UARTS.

     

    MK

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