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JZou.2
Associate II
August 22, 2020
Question

Can I use 2 pins of SWD for debugging?

  • August 22, 2020
  • 2 replies
  • 1970 views

I try to debug H7 MCU by SWD port. Can I only use SWDIO and SWCLK for this? I do not want to use NRST for debug issues.

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2 replies

Piranha
Principal III
August 22, 2020

No, you need GND also. So that's 3 pins total. :)

JZou.2
JZou.2Author
Associate II
August 22, 2020

Yes, GND also

Tesla DeLorean
Guru
August 22, 2020

Sure, but doesnt that limit the experience? Might also consider connecting SWO​

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JZou.2
JZou.2Author
Associate II
August 22, 2020

I am not if NRST pin. It seems that SWDIO and SWDCLK can do everything.

Pavel A.
August 22, 2020

.