TPS65381A-Q1: Q&A Watchdog synchronization with RM42L432

I want to contact Mr. Michael Wendt for technical email or oral question related to this circuit connecting with HFO TF536 16bit da converter, because of high text volume. Thank you!

Hi Yuval,

Have you been able to confirm that the RM43L432 keeps sending the answers to arrive in the expected window1 and window2 configuration after exiting the DiagnosticMode? If you have access to the SPI pins the best option would be to probe the lines to make sure the Q&A sequence timing is preserve.

Regards,
Ivan

Hi Ivan,

I don't have the right tool to capture the SPI, but I did toggle a GPIO on rti even see pic attached:

WD init is:

#define OPEN_WINDOW_CONFIG 40

#define CLOSE_WINDOW_CONFIG 15

boolean ML_tps_watchdogInit(void)
{
	boolean blRetVal = TRUE;

	watchdogconfig.u8TokenFDBK = 0;
	watchdogconfig.u8TokenSeed = 0;
	watchdogconfig.blwatchdog_reset = FALSE;
	watchdogconfig.u8open_windowtime_scaler = (uint8) (OPEN_WINDOW_CONFIG / 0.55 - 1);
	watchdogconfig.u8close_windowtime_scaler = (uint8) (CLOSE_WINDOW_CONFIG / 0.55 - 1);
	watchdogconfig.watchdog_mode = QANDA_MODE;

	blRetVal = TPS_WatchdogInit(&watchdogconfig);

	if (TRUE == blRetVal)
	{
		TPS_SendDebugText(INFO, (uint8*) "WD_INIT PASS", 0);
	}
	else
	{
		TPS_SendDebugText(INFO, (uint8*) "WD_INIT FAIL", 0);
	}

	rtiStopCounter(rtiCOUNTER_BLOCK1);
        rtiResetCounter(rtiCOUNTER_BLOCK1);

        ML_tps_setRtiEvenModeToActive();
	NextActiveWDWindow = OPENWDW;

	rtiREG1->CMP[rtiCOMPARE2].COMPx = (OPEN_WINDOW_CONFIG*10000)/2;
	rtiSetPeriod(rtiCOMPARE2 ,((OPEN_WINDOW_CONFIG*10000)+(CLOSE_WINDOW_CONFIG*10000))/2);

       rtiStartCounter(rtiCOUNTER_BLOCK1);

	return blRetVal;
}

When I'm running the code with out the diagnostic stage everything is fine see printout of registers below:

Initialization of the TPS driver
Setting DEBUG mode PASS
Setting ENDRV output PASS
WD_INIT PASS
u8CurrentWDFailCount=0, u8wdtstatus=0x0, u8CurrentTPSState=7
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0x0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0x0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0x0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0xc0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0xc0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0xc0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0xc0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0xc0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0xc0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0xc0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0xc0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0x0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0x0, u8CurrentTPSState=5
u8safety_check_ctrl=0x25, blENDRVError=0
u8CurrentWDFailCount=0, u8wdtstatus=0x0, u8CurrentTPSState=5

problem starts when i run wd diagnostics-->initializing WD-->exit TPS diagnostic mode: On the scope I see the exact same image as above, but the registers shows:

Initialization of the TPS driver
Setting DEBUG mode PASS
Setting ENDRV output PASS
TPS_RegReadBackandCompare PASS
TEST_WD_DIAGMODE PASS
TOKENEARLY error test PASS
SEQERR error test PASS
TOKENERR error test PASS
TOKENERR error test PASS
TIMEOUT error test PASS
TESTING of WD errors passed, ENDRV state changing based on WD errors
WD_INIT PASS
u8CurrentWDFailCount=0, u8wdtstatus=0xc0, u8CurrentTPSState=7
u8safety_check_ctrl=0x27, blENDRVError=0
u8CurrentWDFailCount=7, u8wdtstatus=0xc0, u8CurrentTPSState=7
u8safety_check_ctrl=0x14, blENDRVError=0
u8CurrentWDFailCount=7, u8wdtstatus=0xc0, u8CurrentTPSState=4
u8safety_check_ctrl=0x15, blENDRVError=0
u8CurrentWDFailCount=7, u8wdtstatus=0xc0, u8CurrentTPSState=4
u8safety_check_ctrl=0x15, blENDRVError=0
u8CurrentWDFailCount=7, u8wdtstatus=0xc0, u8CurrentTPSState=4
u8safety_check_ctrl=0x15, blENDRVError=0
u8CurrentWDFailCount=7, u8wdtstatus=0xc0, u8CurrentTPSState=4
u8safety_check_ctrl=0x15, blENDRVError=0
u8CurrentWDFailCount=7, u8wdtstatus=0xc0, u8CurrentTPSState=4
u8safety_check_ctrl=0x15, blENDRVError=0

Hi Ivan,

I noticed that the TPS WD_WIN1_CFG Register and WD_WIN2_CFG Register are getting corrupted: after diagnostics:

WD_INIT PASS
u8CurrentWDFailCount=5, u8wdtstatus=0xc0, u8CurrentTPSState=7
TPS_WDT_WIN1_CFG=71, TPS_WDT_WIN2_CFG=26
u8CurrentWDFailCount=0, u8wdtstatus=0xc0, u8CurrentTPSState=0
TPS_WDT_WIN1_CFG=0, TPS_WDT_WIN2_CFG=0
u8CurrentWDFailCount=7, u8wdtstatus=0xc8, u8CurrentTPSState=4
TPS_WDT_WIN1_CFG=127, TPS_WDT_WIN2_CFG=24
u8CurrentWDFailCount=7, u8wdtstatus=0xc8, u8CurrentTPSState=4
TPS_WDT_WIN1_CFG=127, TPS_WDT_WIN2_CFG=24