• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 29 subscribers
  • Views 231 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DRV8718S-Q1EVM: SPI Communication

Dhanush B N
Prodigy 30 points
Part Number: DRV8718S-Q1EVM

Hello everyone,

I am using the DRV8718S-Q1 evaluation board to drive the motor through SPI commands, here I am seeing a huge difference in timing between SPI READ and WRITE operations.

When I am writing a value to the register the operation takes around 3.25us and when I am reading the value from the register the operation takes around 53us.

Is this the expected behavior over SPI? and if YES can you please let me know the reason for the timing difference for both READ and WRITE operations.

Looking forward for the quick response,

Thanks and Regards,

Dhanush B N

  • 0
    TI__Guru 55615 points

    Dhanush,

    How is this time measured?  I am trying to determine if it is just delay due to USB transmission back to the GUI.  Could also be some delay in our firmware on the MSP430.  

    If you can send some scope captures, it would be helpful to understand this better.

    Regards,

    Ryan