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F29H85X-SOM-EVM: The write issue of the ap register in the SSU module

Li Geng
Prodigy 110 points
Part Number: F29H85X-SOM-EVM
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

I used the interfaces provided in the SDK to operate the ap register in the SSU module. I found that I couldn't write to it and I have no idea why. The Device_init() function is a function in the SDK, which includes operations such as clock initialization and peripheral enablement.

  • 0
    Prodigy 110 points

    In addition, is there a demo project for the use of the AP register in SSU?

  • +1 in reply to Li Geng
    TI__Genius 11071 points

    Hello Li,

    Apologies for the late reply. Generally, the SSU registers are not configured by runtime code. Rather, the configuration is programmed into the SECCFG Flash region and is loaded from there at boot time. This configuration is created using the SysConfig tool (System Security module) and generated as part of the .out image. Please refer to our application note, which explains how this process works. 

    There are a couple of SSU examples in the SDK that you can refer to.

    - ssu_ex1_mode2: Single-core example demonstrating separation of different parts of an application into multiple STACKs and LINKs

    - ssuIpc_ex1_basic_cpu1_cpu3_multi: Multi-core example demonstrating how a shared APR can be used to protect data transfer between two CPUs.

    Best regards,
    Ibukun