MSP432E401Y: How to test for Watchdog Timer Reset on start up?

AndrewH

Part Number: MSP432E401Y

I am using MSP432E401Y with TI-RTOS on CCS v10.

On MCU power-up, is it possible for the software to determine if the Watchdog Timer Reset was the cause of the power cycle?

I cannot see any flags in any of the Watchdog registers to poll.

My MCU powers on for several reasons, including when coming out of hibernate.

Regards,

Andrew

over 4 years ago

+1 Xiaodong LI over 4 years ago

TI__Mastermind 23715 points

Hi Andrew, Please check if 4.2.7 RESC Register. WDT0 and WDT1 are OK to indicates that Watchdog Timer timed out and generated a reset

0 AndrewH over 4 years ago in reply to Xiaodong LI

Prodigy 175 points

Thank you Xiaodong LI.

I have tested it and it works.

    if( HWREG(SYSCTL_RESC) & SYSCTL_RESC_WDT0 )
    {
        Print_DeBug( "\r\n>> Watchdog Timer CRASH !!!\r\n\r\n" );
        HWREG(SYSCTL_RESC) = HWREG(SYSCTL_RESC) & 0xFFFFFFF7;
    }

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MSP432E401Y: How to test for Watchdog Timer Reset on start up?