[CC2650 Zigbee]How to get watchdog status?

Kuo Austin

Hi All

Zigbee stack:1.2.2a

Now, watchdog can work normally in my program.
Like WatchdogReloadSet() and WatchdogIntClear() and WatchdogEnable() is work.
When I read the status value of the trigger watchdog through "WatchdogIntStatus()" after device watchdog reset and before run "WatchdogIntClear()"
The status value I got is 0. (watchdog.h：0 -> Watchdog interrupt is not active)

I hope i can determine if the device reboot is triggered by the watchdog.

Thanks for your help.

over 4 years ago

+1 Ryan Brown1 over 4 years ago

TI__Guru**** 219597 points

Hi Kuo,

You can use the SysCtrlResetSourceGet Driverlib API to return the last reset source, including RSTSRC_WARMRESET which is indicative of a watchdog reset. You can refer to tirtos_cc13xx_cc26xx_2_16_01_14/products/cc13xxware_2_03_02_16941/doc/driverlib/group__sysctrl__api.html and this E2E post.

Regards,
Ryan

0 Kuo Austin over 4 years ago in reply to Ryan Brown1

Prodigy 110 points

Thanks a lot.

It's work.

0 Kuo Austin over 4 years ago in reply to Ryan Brown1

Prodigy 110 points

How do I reset this parameter when I got it?

Step 1：Watchdog trigger to reboot

Step 2：I can get RSTSRC_WARMRESET from SysCtrlResetSourceGet()

Step 3：Normal reboot.

Step 4：I still get RSTSRC_WARMRESET from SysCtrlResetSourceGet()

0 Ryan Brown1 over 4 years ago in reply to Kuo Austin

TI__Guru**** 219597 points

The CPU_SCS:AIRCR.SYSRESETREQ register or a System CPU LOCKUP can also cause a warm reset, as explained in Section 6.7.2 of the TRM (swcu117). The PRCM:WARMRESET register has readable bits that indicate if the MCU_VD was reset due to a system CPU LOCKUP event (LOCKUP_STAT) or a watchdog time-out (WDT_STAT). Reading either bit of this register clears both until the next event occurs.

Regards,
Ryan

Zigbee & Thread

Zigbee & Thread forum

[CC2650 Zigbee]How to get watchdog status?