How to trigger a software reset for the msp430f5

Al2966

Hi,

I need to trigger a software reset for the msp430f5.

I dont want to use the WDT to do it.

I retrieve the reset reason from the SYSRSTIV register after restart in the preinit.c and I dont want to have intentional reset coupled with WDT or other unintentional reset causes (how can I trigger a DOPOR or DOBOR)

Thanks,

over 15 years ago

0 Jeff Tenney over 15 years ago

Guru 12160 points

I use this on a '5438

MOV.W #PMMPW + PMMSWBOR + PMMCOREV_2, &PMMCTL0

0 Al2966 over 15 years ago in reply to Jeff Tenney

Intellectual 355 points

Great thanks!

0 Brandon08 over 15 years ago in reply to Al2966

TI__Mastermind 24315 points

To add to Jeff's response:

In the below response I will refer to chapters and pages in the MSP430x5xx User’s Guide You could

1. cause a flash security key violation, (chapter 6, page 267)

2. write an invalid WDT security key, (chapter 2, namely page 51)

3. use the WDT for a periodic RST,

4. Invoke a BOR or POR from software, (page 85, 92)

5. write a PMM key violation, or (chapter 4, page 88)

6. try to execute a fetch to the peripheral area of memory. (chapter 1 page 20)

Please also see page 27 of the 5xx User’s Guide for a graphical representation of all of the reset triggers for the MSP430, both in hardware and in software.

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How to trigger a software reset for the msp430f5