ULPI read registers

[developer2]

Posted on July 07, 2017 at 14:43

Hi,

could you help me please to implement reading registers from USB ULPI chip ?

thanks for all replies

Kind regards ...

[waclawek.jan]

Posted on July 07, 2017 at 16:27

AFAIK there's no provision for direct access (read nor write) of ULPI registers available in the HS_OTG in STM32.

Disclaimer: I don't use the HS_OTG.

JW

[developer2]

Posted on July 07, 2017 at 16:37

i'm trying to solve my issue:

https://community.st.com/0D50X00009XkiVqSAJ

and i got idea to read ULPI's registers as basic testcase of communication ... i don't need to read registers during running state ... sufficient for me is to read ULPI vendor id for example and confirm regarding docs ...

[waclawek.jan]

Posted on July 07, 2017 at 17:44

Bitbang the ULPI protocol?

Sounds like a challenge for real men... should be doable if the PHY's clock can be turned to input...

JW