• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 45 subscribers
  • Views 260 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.

AFE4460: AFE4460 with STM32 - Can't Power LED Using Example Code on Custom PCB

Jiajin Hou
Prodigy 10 points
Part Number: AFE4460

Tool/software:

Hi TI team,

I’m working with the AFE4460 on a custom PCB and interfacing it with an STM32 microcontroller. I’ve verified that the SPI read/write functions are working correctly — I can read back register values. I’ve also checked the hardware connections multiple times and they all seem fine.

However, when I try to use the example code provided (specifically to power on the LED use the TXP pins), nothing happens — the LED stays off.


Best regards,

Jiajin Hou

  • +1
    TI__Intellectual 1700 points

    Hi Jiajin,

    Are you following the initialization sequence?

    If you are already following that sequence or it doesn't resolve your error:

    • Verify that the supply lines all have the expected voltage level
    • Verify that the device is successfully generating interrupts to ensure device functionality

    Regards,

    Payton

  • 0 in reply to Payton Schubel
    Prodigy 10 points

    Thanks Payton,

    Now It's working.

    I'm trying to find out if it's possible to wire a TXP and eight TXNs to two LED drivers at the same time, as shown in the diagram. Because I found in the AFE_set_phaseType function that I can only connect one TXP and two TXNs.

    Regards,

    Jiajin

  • 0 in reply to Jiajin Hou
    TI__Intellectual 1700 points

    Hello Jiajin,

    Since the AFE4460 datasheet is under NDA restriction, any more in-depth questions will need to be handled over email. I'll reach out to you there with my response.

    Regards,

    Payton