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Data from DSP to PC

Basavaraj Hiremath
Intellectual 795 points
Other Parts Discussed in Thread: TMS320C6748, ADS8361

Hello,

 

I need to send data from DSP (using dsk 6416) to PC at a high speed. For now I am using one of the McBSPs as UART and using serial on PC to read data at 115kbps. This works fine but I need to go faster than this.

What are my options? 

1. HPI?

2. PCI?

3. McBSP as USB? 

 

Thanks,

 

Best Regards,

Basu 

  • 0
    TI__Mastermind 41665 points

    With a C6416 you are somewhat limited as the DSK does not offer any real high bandwidth connections you could use with a typical PC, with a custom board than PCI might be a good way to go, but it may not be practical to do so with the DSK.

    HPI is a possibility but in general PCI would be easier since it is a more standardized PC interface already, PCI is good except for lack of a physical connection on the DSK for it, and that you would have to do some driver work on the PC to get it to talk to the DSK. The McBSP cannot act as a USB controller, though if you are getting into custom hardware you could put an external USB controller on the C6416's EMIF. You could also try pulling the data over to the PC over the JTAG connection, you can move more than 115kbps easily with a higher end emulator like a XDS560, however such emulators are expensive and it requires the PC to have CCS installed.

    You may want to consider a newer device that has alternative interfaces, such as Ethernet or USB (perhaps TMS320C6748 ), which would make this easier.

  • 0 in reply to Bernie Thompson TI
    Intellectual 795 points

    Thank you for the quick response Bernie,

     

    So with the given DSK PCI option is ruled out. I would like to know more about the other two options

    1. USB controller on EMIF: I am using 5-6k interface card which allows me to use ADC (ADS8361 EVM) on McBSP0 and McBSP2 as UART. Are there any EVMs for the USB controller that go with 5-6k interface card? So that I don't have to disturb the current ADC setup.

    2. Newer devices: Does TI has DSK for TMS320C6748? Where can I find more information about these DSKs?

     

    One more general question. Can I  access GPIO pins on 5-6k interface card other than DC_CNTL ?

     

     

    Thanks again Bernie,

     

    Best Regards,

    Basu