• State Resolved
  • Locked Locked
  • Replies 5 replies
  • Subscribers 29 subscribers
  • Views 451 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.

About DRV8811EVM and GUI

Satoshi
Guru 19645 points
Other Parts Discussed in Thread: DRV8811EVM, DRV8811

Is setting up HOMEn by DRV8811EVM possible?

Although I think that reset and power up become "L" and others "H", it always becomes "L".

(At the time of PC connection: "L", after motor rotation:"L")

The photograph of GUI is attached.
 

Thank you for your consideration.

  • 0
    TI__Mastermind 26065 points

    Hi Satoshi

    HOMEn is an output pin and state LOW at the 45 degree in microstepping. You mean your HOMEn output L all the time? Could you give test waveform of the HOMEn in your bench and the driver settings about mirco stepping when motor is running?

    Thanks,

    Wilson

    Motor Application Team

  • 0 in reply to Wilson Zuo
    Guru 19645 points

    Dear Wilson-san

    Thank you for your reply.

    Yes,HOMEn output "L" all the time.

    Are there any conditions, output "L" all the time at a full-step?

    Since the waveform is informing that it can be given, please wait for a while.

     Best regard,

    Satoshi

  • 0 in reply to Satoshi
    TI__Mastermind 26065 points

    Hi Satoshi-san

    I checked your problem with our EVM. I found it is true that HOMEn is always LOW. Finally found the reason is because the HOMEn signal had been loaded down by the MCU P4.6.

    Our firmware had configed P4.6 as output but should be input.

    To solve the problem, If you are able to reprogram the MCU on the EVM, you can make the following change and recombine and download the flash. Or, you can cut off the connection in our EVM which from MCU PIN42(P4.6) to the HOMEn of DRV8811. Then, if you test the HOMEn output, you will see everything be normal.

    --- Config.h -----

    //#define     P4DIR6          OUTPUT
    #define     P4DIR6          INPUT

    ----------------------------------------------------

    Sorry to bring the confuse, this should be correct in our EVM package. I will feedback to our team.

    Thanks.

    Wilson

    Motor Application Team

     

     

  • 0 in reply to Wilson Zuo
    Guru 19645 points

    Dear Wilson-san

    Thank you for the investigation.

    If there is newest build(project) data, I will want you to carry.
    (Although it is trying to rewrite, an error comes out)

    Moreover, although HOMEn and MCU PIN42 (P4.6) is taking out "H" and "L" output mutually, has it broken?
    (HOMEn "H" output is very small(200μA), I think that there is no damage.)

    best regard,

    Satoshi

  • 0 in reply to Satoshi
    TI__Mastermind 26065 points

    3872.testDRV8811.rar

    Hi satoshi-san

    I attached the modified project file of the MCU. if you can download to the MCU, you will see the HOMEn signal be normal. I checked that there will be no any demange even the HOMEn is always tied to LOW or GND as the output of the HOMEn pin is very weak.

    Thanks.

    Wilson