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SWD Debug with MKL26

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SWD Debug with MKL26

‎04-17-2017 03:08 PM
1,202 Views
luishs
Senior Contributor I

Hello.

Somebody know if need RESET pin to Debug a MKL26 MCU with SWD ??.

I have develop a PCB with QFN MKL26, its a prototype not yet tested, I do not have put the RESET pin to program and Debug the chip, and now Im not sure if I will may Debug it without RESET pin.


I have read that some ARM Microcontrollers need RESET, some not. For example recently I tested a ST STM32 and this need RESET pin to do Debug with SWD.

Kind Regards

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1 Reply

‎04-20-2017 09:16 AM
1,026 Views
jasonphilippi
Contributor III

Luis,

Just took a look at the manual.

Seems that your reset is controlled through this register

k26debugControlregist.PNG

Based off of this section here, it seems like you do not need to set it up in software. I would make sure it is properly set up on PCB such that it doesn't float or lock the MCU.

k26debug.PNG

Regards,

Jason P

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