S32K344 + FS26: Keeps reseting power output in normal mode

[anertorre]

Hi @guoweisun I am having difficulties setting up the S32K344 + FS26 (MFS2613AMDA2AD) combination. The HW design is EVB based, so I can discard issues with the HW setup. 

My problem is that I managed to implement the driver in the S32 DS, by adding the Sbc_fs26_ip driver into my MEX file, just following the SBC_fs26_IP example project. The code (left below) is apparently properly initializing the FS26 and properly refreshing the WD, in Debug mode.

eReturnValue = Sbc_fs26_Init(&Sbc_fs26_xConfig);
eReturnValue |= Sbc_fs26_InitDevice();
if(eReturnValue != E_OK)
{
    bPass = FALSE; /* Error during initialization. */
}

while (true) {
    eReturnValue = Sbc_fs26_WdRefresh();
    delay_ms(6);
}

However, when I exit the debug mode, the FS26 seems to keep resetting its output power sources to the S32K344, at a rate that gets slower with the time. Also, it is confusing that I left the FS0B only in all reactions in the Sbc_fs26_ip driver in the S32 DS. This also happens if I disable the Watchdog timer.  Do you have any ideas where I can start looking for?

I leave here additional info about the current register values (in Debug mode, since I cannot attach debugger in normal mode due to the device being reset)

FS_SAFE_IOS_1: 0x7000

FS_SAFE_IOS_2: 0xB

FS_DIAG_SAFETY1: 0x103

FS_DIAG_SAFETY2: 0x8

[guoweisun]

Hi 

You can try to disable WD to test again and let me know whether issue still has or not.

[anertorre]

Hi @guoweisun . Thanks for your reply. I can confirm that setting Watchdog period field to 'Disabled' in FS_WDW_DURATION register, stops the FS26 from resetting the S32K3

Also, I noticed that when setting this field to e.g. 6 ms or 8 ms (with the rest of the configuration as in the screenshots) causes the Sbc_fs26_InitDevice() function to return E_NOT_OK (in the Sbc_fs26_WaitInitFSClosed() function) 

[guoweisun]

Hi anertorre

Which software drive did you refer in your project?

Can you confirm whether software have feed Watchdog operation after SBC enter into normal mode?

[anertorre]

Hi @guoweisun 

I am using the Sbc_fs26_Ip (non-AUTOSAR configuration) software driver, and can't actually check for feed watchdog activity, since when watchdog is enabled, the Sbc_fs26_InitDevice() does not succeed

[guoweisun]

Hi anertorre

I am not software engineer but still checked the Sbc_fs26_Ip software and didn't find the feed WD code inside of Sbc_fs26_Ip.

Sbc_fs26_Ip can initialize SBC and enter into normal mode, in the INIT phase the WD should be disabled in case of enter into normal mode need feed WD.

I think you should refer to below software.