RTOS/IWR1443: How to perform a proper software reset?

Part Number:IWR1443

Tool/software: TI-RTOS

Hi:

I have implemented a software reset in my project to reset the board when something serious happens. 

The code looks like this:

SOC_DriverMCB*      ptrSOCDriverMCB;

    /* Get the pointer to the SOC Driver Block: */
    ptrSOCDriverMCB = (SOC_DriverMCB*)handle;
    if (ptrSOCDriverMCB == NULL)
    {
        return E_NOT_OK;
    }
    else
    {
        /* Configure the register to issue Warm reset upon MSS Watch dog reset: */
        ptrSOCDriverMCB->ptrRCMRegs->SOFTRST1 = CSL_FINSR(ptrSOCDriverMCB->ptrRCMRegs->SOFTRST1, 7U, 0U, 0xAD);
    }
    return E_OK;

It works fine without any mmwave function activates. The problem occurs after I start the mmwave sensor. 

The error occurs at Mailbox_init at mailbox.c:96, the message is "next frame is identical to an existing frame".

I took a look at the mailbox.c line 96, it is:

...
if (localEndpoint != MAILBOX_TYPE_MSS)
...

I tracked the value of the localEndpoint, it is MAILBOX_TYPE_MSS during the first call after the SOFTRST.

So I got confused by the error messages. I hope you can help me to understand the correct way to do the SOFTRST.