STUSB4531 driver

[Hamady]

Hi everyone, 

I saw that ST give a C driver for STUSB4500 and even have a binary to test the 4531 on some boards.

Can ST provide a C library for this chip ?

Thanks.

[Hamady]

Hi,

No one to assist on this?

Thanks

[Didier HERROUIN]

Dear Hamady,

There is not such C code example for STUSB4531.

You should find all the needed information in the on-line Application Notes.

Do not hesitate to describe what you intend to do.

As a remind, the STUSB4531 works as a standalone for "standard" use case, I2C communication is required only if you want to extend its capabilities using the Hybrid mode.

Best regards,

[Hamady]

Hi thanks 

M'y main goal is to put in NVM the bit USB_COMM_CAPABLE to 1 to enable data communication on USB devices . Also set max pdo voltage to 30V max beacause our hardware can't handle 42V

Also i'm coming from STUSB4500 that showed a lot of hardware issue (4 board with chip dead /5) we have copied the scematic from ev board . Internally do you have seen issue with STUSB4500 that have been fixed with 4531 ? 

Thanks

[Didier HERROUIN]

Dear Hamady,

For NVM access, you can refer to the Application Note AN6388 : https://www.st.com/resource/en/application_note/an6388-how-to-read-or-to-write-stusb4531-nvm-content-stmicroelectronics.pdf

Note that for EPR range (from 20V to 48V), external HV protection and supervision are required as STUSB4531 AMR=28V.

Concerning STUSB4500, no failure or weakness have ever been arisen from the field, and it has been deployed by millions of units ! I just saw the other thread opened in ST community by valentinescott03, I will dig into it.

Regards.