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analogdevicesinc / TMC-API

TRINAMIC's IC API
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Issues with reading XACTUAL from TMC5160 #46

Open hajilisamir opened 10 months ago

hajilisamir commented 10 months ago

Hi,

I have a situation that when I write 0x05 0x07 0x21 0x9E data package to my stepper driver through UART I read nothing. I confirm this through Logic Analyzer. TMC issue

Any ideas?

Thanks in advance Samir

joshua-8 commented 10 months ago

Hi Samir, I've never used a TMC5160, but looking at the datasheet in section 23.1 Initialization Examples, it suggests that you can "query XACTUAL" with UART write: 0x05 0x01 0x21 0x6B so that's probably worth trying. How did you choose the 4 bytes in your data package? Good luck, joshua-8

hajilisamir commented 10 months ago

Hi Joshua,

Thank you for your reply.

It is the similar message. 0x07 is the address instead of the 0x01 from the example. It is different since I have multiple steppers in my set up.

To give you more details about the issue; I have this messages sent in the past and I was able to read the signals correctly with Logic Analyzer, and since then I was working both on HW and SW, now something is up with which I don't understand, so steppers do not reply back. Could be a hardware issue. Here is an example when the stepper driver replied to the same 4 byte data package.

image

Till I confirm if it is a HW issue or not, do you have any clue what would be going wrong? Everything else is working, I can move the motors and etc.

Thank you and best regards, Samir

joshua-8 commented 10 months ago

If the stepper responds to other commands just not x actual that's just strange and I'm sorry to say I have no other ideas.

Can you read from any registers?