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TMS320F28379D: delay compensation for SPI

Marcel Kummer
Expert 1015 points
Part Number: TMS320F28379D

Hello everyone,

with the CLB-Block it is possible to perform delay compensation with the EnDat / BiSS librarys.

Is there a way to get delay compensation working with normal SPI?

Regards,

Marcel.

  • 0
    TI__Mastermind 24095 points
    Hi Marcel,

    Yes - it's very much possible to implement delay compensation with CLB.
    Please refer to the Position Manager libraries provided by C2000 in the link below.
    www.ti.com/.../absolute-encoder.html
    Both EnDat and BiSS-C are available as libraries, where CLB is used to implement the delay compensation over SPI, needed for these interfaces.

    -Bharathi
  • 0 in reply to Subrahmanya
    Expert 1015 points
    Hello Bharathi,

    I know, that your libraries support that.

    What I wanted to know is, if it is possible to implement a custom SPI-Kommunikation (not EnDat/BiSS) while using delay compensation.

    We want to exchange data between several C2000 devices, this data needs to reach every device very quickly. We thought about an easy SPI-Bus communication between those devices. Since the daisy chain could become quite long we would like to use the delay compensation to eleminate the signal delay, so we can use a higher SPI-frequence. Then the last slave device will become the critical point where CLK and SOMI still have to be syncroniced and not the Master.
  • 0 in reply to Marcel Kummer
    TI__Mastermind 24095 points

    Hi Marcel,

    Device can certainly support SPI delay compensation with CLB - that's similar to the logic being used in EnDat/BiSS-C communications as well.
    But, as of now, we are only delivering libraries for CLB based support functions.
    So, the capabilities are limited to the available library functions via. Position Manager.


    -Bharathi.