Single Wire Debugging (SWD) with 1 MHz System Clock does not work

[lpcware]

Content originally posted in LPCWare by pkarrer_solcept on Mon Feb 17 08:32:18 MST 2014
Clock Setup: Clock source is the internal IRC.

When I leave the divider by 1, then SWD still works.

When I change the divider to 12 (eq. 1 MHz) then it get "Failed on connect: Ep(01). Target marked as not debuggable"

What's wrong?

[lpcware]

Content originally posted in LPCWare by pkarrer_solcept on Wed Feb 19 04:01:54 MST 2014
Thanks, I changed the debug speed and it is fixed.

[lpcware]

Content originally posted in LPCWare by pkarrer_solcept on Wed Feb 19 03:32:18 MST 2014

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Quote: starblue
Try lowering the SWD clock frequency.

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How?

[lpcware]

Content originally posted in LPCWare by pkarrer_solcept on Wed Feb 19 03:31:55 MST 2014
It's an LPC812 and a Red Probe+

[lpcware]

Content originally posted in LPCWare by starblue on Mon Feb 17 10:01:28 MST 2014
Try lowering the SWD clock frequency.

[lpcware]

Content originally posted in LPCWare by lpcxpresso-support on Mon Feb 17 09:03:50 MST 2014
Which target?
Which debug probe?