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Associate
June 22, 2026
Question

L9305 SPI initialization process

  • June 22, 2026
  • 2 replies
  • 32 views

Hello ST export:

This is the first time we've used the L9305 chip in our project. The peripheral hardware circuitry is now all set up. I'd like to know whether ST has a standard recommended initialization procedure for the SPI interface of this chip. (such as who is first for BIST or diagnostic comparators)

And I have another question: the status and results for BIST are in the EXCEPTION1 register D[8:7], is it correct? Shouldn't it be D[10:9]?

 

2 replies

Xia ShiyuAuthor
Associate
June 22, 2026

Hello ST expert:

I've encountered another problem: my SPI can only read, but writing fails. Why is that?

Billy OWEN
ST Employee
June 23, 2026

Hi ​@Xia Shiyu 

 

This post has been escalated to the ST Online Support Team for additional assistance.  We'll contact you directly.

 

Regards,

Billy