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spi interface

seeni vasan
Intellectual 580 points
Other Parts Discussed in Thread: CD74ACT164

hai

         i was using the ezdsp5505 usbstick when i run the csl_spi program it says that read and write buffers are not matching any one figure out what the problem is and give me how to write the single byte on to a specified page and read the single byte from that page.

 

        i was using  the spi shift register cd74act164  ic and i find when i send the data to the d0 pins and serial clock to the cp pins but i find no communication takes place wheather i want to use different clock division value or the one which i was using with above spi eeprom memory is enough.

                                                                                                                                                                                                                                                   with regards

                                                                                                                                                                                                                                                       seeni

  • 0
    TI__Expert 7031 points

    Seeni;

    Which buffer are you referring to?

    And it seems that you have your own hardware in addition to eZDSP, if so, how does it connect to eZDSP?

    Regards

    Wen

  • 0 in reply to Wen Li
    Intellectual 580 points

    hai wen ,

                     yes i has constructed my own hardware with cd74act164   8bit shift register and i connected the 5 th pin of the topside with spi _clk to the chip cp  pin and 7th pin with spi_tx to ds1 pin  of the expansion connector. when i send data through it data is not latching.

     along with the kit spi  eeprom  m95512 while comparing the data it is failed the buffer is not matching while running spi_pollexample.

     

     

    with regards

    seeni