RM41L232: Q&A Watchdog synchronization with RM41L232

Yuval Klein

Part Number: RM41L232

HI,

I have the RM41L232 connected to the TPS65381A-Q1 on the nRST line, I'm using Q&A watchdog configuration and I am able to get it to work after POR.

I'm trying to recover from a situation where the CPU has a different reset (SW, Debug, pressing the reset button) but I'm getting into endless loop of resets.

I tried to force Watchdog reset by having while(1) in sys_startup.c in anywhere but watchdog reset reason to force the TPS to reset the CPU (and by then get into diagnostic mode) but with no success.

Any help is appreciated,

Yuval

over 5 years ago

0 whong zhao over 5 years ago

Genius 4180 points

Hello

Can you paste your code

What function of TPS do you want to use

only watchdog?

Is your feeding time correct

0 QJ Wang over 5 years ago in reply to whong zhao

TI__Guru**** 196246 points

Hello,

1. If the watchdog in TPS65381 is not served correctly, the TPS65381 may keep resetting the MCU.

2. What is the state of TMS570 nERROR signal and value of ESM status registers?

0 Yuval Klein over 5 years ago in reply to QJ Wang

Expert 1100 points

Hi All,

I solved the issue.

The moment I realized the TPS is getting into Diagnostic mode after ANY reset event, I change the code to initialize it and the watchdog correctly and on a timly manner (It wasn't the first this I did in the code).

That allows the CPU to recover from any reset correctly.

Yuval

Arm-based microcontrollers

Arm-based microcontrollers forum

RM41L232: Q&A Watchdog synchronization with RM41L232