MPC5748G SWT

[徐工2024]

Hi:
Question: Is there a limit to the number of SWT overflows?
I would like to ask some questions about SWT. The situation I have encountered now is that I do not feed the dog to SWT, but after the program is reset by SWT for 15 times each time, the development board will be in a state of constant reset, and only after the development board is restarted can it be run again. For this limit of times, is there a corresponding register that can be checked? I am a novice, read for a long time without the relevant description, finally my English is very poor, hope someone can help me.
thank you

[petervlna · Accepted solution]

Hello,

Question: Is there a limit to the number of SWT overflows?

There is no such limit, if you do not set it in SWT Control Register (SWTx_CR):

petervlna_0-1739949853538.png

program is reset by SWT for 15 times each time, the development board will be in a state of constant reset,

Ok, that is clearly enabled destructive reset escalation on default 0xF. 

petervlna_2-1739950077377.png

petervlna_3-1739950144625.png

Best regards,

Peter

[徐工2024]

Hi,
Thank you so much, Peter, for solving my problem.
Best regards,

Mir Xu-2024

[徐工2024]

This is my configuration

2024_0-1739928327851.png