MPC5748G SWT

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徐工2024
Contributor II

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

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petervlna
NXP TechSupport
NXP TechSupport

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

 

 

 

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1,764件の閲覧回数
petervlna
NXP TechSupport
NXP TechSupport

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

 

 

 

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徐工2024
Contributor II

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

Mir Xu-2024

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徐工2024
Contributor II

This is my configuration

2024_0-1739928327851.png

 

 

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%3CLINGO-SUB%20id%3D%22lingo-sub-2046324%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3EMPC5748G%20SWT%E3%81%AE%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2046324%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3E%3CP%3E%E3%81%93%E3%82%93%E3%81%AB%E3%81%A1%E3%81%AF%EF%BC%9A%3CBR%20%2F%3E%E8%B3%AA%E5%95%8F%3ASWT%E3%82%AA%E3%83%BC%E3%83%90%E3%83%BC%E3%83%95%E3%83%AD%E3%83%BC%E3%81%AE%E6%95%B0%E3%81%AB%E5%88%B6%E9%99%90%E3%81%AF%E3%81%82%E3%82%8A%E3%81%BE%E3%81%99%E3%81%8B%3F%3CBR%20%2F%3ESWT%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6%E3%81%84%E3%81%8F%E3%81%A4%E3%81%8B%E8%B3%AA%E5%95%8F%E3%81%97%E3%81%9F%E3%81%84%E3%81%A8%E6%80%9D%E3%81%84%E3%81%BE%E3%81%99%E3%80%82%E7%A7%81%E3%81%8C%E4%BB%8A%E9%81%AD%E9%81%87%E3%81%97%E3%81%A6%E3%81%84%E3%82%8B%E7%8A%B6%E6%B3%81%E3%81%AF%E3%80%81SWT%E3%81%AB%E7%8A%AC%E3%82%92%E9%A4%8C%E3%81%AB%E3%81%9B%E3%81%9A%E3%80%81SWT%E3%81%AB%E3%82%88%E3%81%A3%E3%81%A6%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%A0%E3%81%8C15%E5%9B%9E%E3%83%AA%E3%82%BB%E3%83%83%E3%83%88%E3%81%95%E3%82%8C%E3%82%8B%E3%81%9F%E3%81%B3%E3%81%AB%E3%80%81%E9%96%8B%E7%99%BA%E3%83%9C%E3%83%BC%E3%83%89%E3%81%AF%E5%B8%B8%E6%99%82%E3%83%AA%E3%82%BB%E3%83%83%E3%83%88%E3%81%95%E3%82%8C%E3%81%9F%E7%8A%B6%E6%85%8B%E3%81%AB%E3%81%AA%E3%82%8A%E3%80%81%E9%96%8B%E7%99%BA%E3%83%9C%E3%83%BC%E3%83%89%E3%81%8C%E5%86%8D%E8%B5%B7%E5%8B%95%E3%81%95%E3%82%8C%E3%81%A6%E5%88%9D%E3%82%81%E3%81%A6%E5%86%8D%E5%BA%A6%E5%AE%9F%E8%A1%8C%E3%81%A7%E3%81%8D%E3%82%8B%E3%82%88%E3%81%86%E3%81%AB%E3%81%AA%E3%82%8B%E3%81%A8%E3%81%84%E3%81%86%E7%8A%B6%E6%B3%81%E3%81%A7%E3%81%99%E3%80%82%E3%81%93%E3%81%AE%E6%99%82%E9%96%93%E5%88%B6%E9%99%90%E3%81%AB%E5%AF%BE%E3%81%97%E3%81%A6%E3%80%81%E3%83%81%E3%82%A7%E3%83%83%E3%82%AF%E3%81%A7%E3%81%8D%E3%82%8B%E5%AF%BE%E5%BF%9C%E3%81%99%E3%82%8B%E3%83%AC%E3%82%B8%E3%82%B9%E3%82%BF%E3%81%AF%E3%81%82%E3%82%8A%E3%81%BE%E3%81%99%E3%81%8B%3F%E7%A7%81%E3%81%AF%E5%88%9D%E5%BF%83%E8%80%85%E3%81%A7%E3%80%81%E9%96%A2%E9%80%A3%E3%81%99%E3%82%8B%E8%AA%AC%E6%98%8E%E3%81%AA%E3%81%97%E3%81%A7%E9%95%B7%E3%81%84%E9%96%93%E8%AA%AD%E3%82%93%E3%81%A7%E3%81%84%E3%81%BE%E3%81%97%E3%81%9F%E3%81%8C%E3%80%81%E3%81%A4%E3%81%84%E3%81%AB%E7%A7%81%E3%81%AE%E8%8B%B1%E8%AA%9E%E3%81%AF%E9%9D%9E%E5%B8%B8%E3%81%AB%E8%B2%A7%E5%BC%B1%E3%81%A7%E3%81%99%E3%80%81%E8%AA%B0%E3%81%8B%E3%81%8C%E7%A7%81%E3%82%92%E5%8A%A9%E3%81%91%E3%81%A6%E3%81%8F%E3%82%8C%E3%82%8B%E3%81%93%E3%81%A8%E3%82%92%E9%A1%98%E3%81%A3%E3%81%A6%E3%81%84%E3%81%BE%E3%81%99%E3%80%82%3CBR%20%2F%3E%E3%81%82%E3%82%8A%E3%81%8C%E3%81%A8%E3%81%86%E3%81%94%E3%81%96%E3%81%84%E3%81%BE%E3%81%99%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-2047079%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3E%E6%97%A5%E6%99%82%3AMPC5748G%20SWT%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-2047079%22%20slang%3D%22en-US%22%20mode%3D%22CREATE%22%3E%3CP%3E%E3%81%93%E3%82%93%E3%81%AB%E3%81%A1%E3%81%AF%3CBR%20%2F%3E%E3%83%94%E3%83%BC%E3%82%BF%E3%83%BC%E3%80%81%E7%A7%81%E3%81%AE%E5%95%8F%E9%A1%8C%E3%82%92%E8%A7%A3%E6%B1%BA%E3%81%97%E3%81%A6%E3%81%8F%E3%82%8C%E3%81%A6%E6%9C%AC%E5%BD%93%E3%81%AB%E3%81%82%E3%82%8A%E3%81%8C%E3%81%A8%E3%81%86%E3%80%82%3CBR%20%2F%3E%3CSPAN%3E%E3%82%88%E3%82%8D%E3%81%97%E3%81%8F%E3%81%8A%E9%A1%98%E3%81%84%E3%81%84%E3%81%9F%E3%81%97%E3%81%BE%E3%81%99%3C%2FSPAN%3E%3CBR%20%2F%3E%3CBR%20%2F%3E%E3%83%9F%E3%83%BC%E3%83%AB%E3%83%BB%E3%82%B7%E3%83%A5%E3%83%BC-2024%3C%2FP%3E%3C%2FLINGO-BODY%3E