Reset Origin ?

RESET_STAT_REG (0x5000005E)

I get 0x1F in that register after reset from JTAG and normal Power-On.

Figure 30 of DS_3v1.pdf in chapter 5 suggest that Watchdog generates a hardware reset that generates a software reset.

Can you confirm to me that after a watchdog reset the value is 0xE ?

Thanks

Hello

I need my software to reboot in case of watchdog reset and to resume its execution thanks to flash memory. This means that I need to ditinguish power-on reset and watchdog reset so I can erase status memory in the former case and resume execution in the latter case.

I am currently testing this register using "0x5000005E != 0x1F" test to identify normal reset but I am not sure of the value of that register in case of watchdog reset (that only occur in some case that I am not able to reproduce voluntarily.)

Hello

I am asking for hardware value of 0x5000005E after a watchdog reset. I am testing if this value is not 0x1F (power on reset) but watchdog reset does not seem to be properly detected using this method.

The RESET_STAT_REG is documented to be a read/write register.

Can you please confirm to me that the latches behind this register are updated during a watchdog reset ?

Do I need to set it to zero after a power on reset so I have a chance to read something else than 0x1F after a watchdog reset ?

This would imply to set this value to zero before calling hw_watchdog_unfreeze();

Thank you

I tried to set that register at zero after a normal startup and I can successfully get 0x16 value after a software reset from JTAG probe.

Problem solved.

For the record, value when getting out of a watchdog reset is 0xE.