S32K3 HSE

[ZY2]

Hello, when I use S32K314 HSE to install AES KEY, the call to Hse_Ip_ServiceRequest() interface always returns timeout. May I ask what is the possible reason

[lukaszadrapa]

Hi @ZY2 

According to GSR register, bit 0 is set. It's flag called HSE_ERR_GENERAL. So, HSE was shut down due to some fatal error.

Most likely, it's because HSE can't access provided parameters - the access was terminated by bus error.

1. Make sure you provided correct pointers as a parameters to the service.

2. Make sure that all data objects used for communication with HSE are forced to non-cacheable SRAM or disable the data cache completely. This is the most common reason.

3. If XRDC is enabled, make sure that HSE has appropriate rights to access the memory.

As a first step, I would try to disable the data cache to see if it makes a difference.

Regards,

Lukas

[ZY2]

1，I reworked the implementation to refer to the official routine, but it still returns a timeout and also closes the cache.

2 ，I installed the HSE KEY successfully before, but failed to install the AES KEY

Demokey catalogThe interface I refactoredDisable caching

[lukaszadrapa · Accepted solution]

If the key was already installed, try to erase it:

It's not possible to import new key in plain if the key slot is not empty. Or simply try to format the catalogs again to start over.

[LZY]

Hello, I have also encountered a similar problem. Could you please tell me how to format it?

[ZY2]

Thank you for your reply. The problem has been found. I defined the pKeyInfo variable locally.