Will KL03 Software/Watchdog reset & memory issue

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Will KL03 Software/Watchdog reset & memory issue

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tigerlo
Contributor III

Hi,

   Will KL03 Software/Watchdog reset clear the internal RAM memory ?

   or Is there any document describe this ?

   Thanks.

Tiger

1 Solution
546 Views
Hui_Ma
NXP TechSupport
NXP TechSupport

Hi Tiger,

The watchdog/software reset will let all module registers with reset value, that need to re-initialize all used module registers. The SRAM content only be affected by power, the watchdog/software reset doesn't clear the SRAM content.

Wish it helps.


Have a great day,
Ma Hui

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tigerlo
Contributor III

Hui_Ma,

   Got it, Thanks.

Tiger

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546 Views
tigerlo
Contributor III

Erich,

   thanks for your help, for one further question is that --

   As document said when watchdog/software reset it will clear some major function (such as RTC), but it is not very clear list what kind of major function, so after reset it is better initialize all H/W function & don't need de-initialize (before reset initialize driver)every H/W driver , is above description right ? 

Thanks.

Tiger

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547 Views
Hui_Ma
NXP TechSupport
NXP TechSupport

Hi Tiger,

The watchdog/software reset will let all module registers with reset value, that need to re-initialize all used module registers. The SRAM content only be affected by power, the watchdog/software reset doesn't clear the SRAM content.

Wish it helps.


Have a great day,
Ma Hui

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

546 Views
BlackNight
NXP Employee
NXP Employee

Hi Tiger,

a watchdog does the same as a reset. So the watchdog itself does not clear the RAM, it would be the (C/C++) startup code which runs after reset.

I hope this helps,

Erich

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