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PSoC 5, 3 & 1 MCU

EdPo_1556871
New Contributor

I am having an irritating problem with my design. I am using 12 GPIO pins in front of a 12 channel analog multiplexer. I am using 3 of the pins that have a 1.0uF capacitor

on the (P0-2,P0-3,P0-4) and using the remaining buffered pin P3.2 as a bypass for the Delta Sigma Reference. The remaining pins (P0-0, P0-1,P1-6,P1-7,P1-5,P0-5,

P0-6,P0-7,P3-0) I have placed a 1.0uF external capacitor to ground (through a common ground wire). When the common wire is grounded I can not program the Psoc5. If I remove the ground wire I can program the Psoc. I am probably using a dedicated pin and slowing it down with the capacitor but I can not find it. The schematic of the

on board programmer and target show that these pins are not used for programming or debugging. With the ground wire grounded I can still 'break into a running

system' but I cannot really use the debugger since it always tries to download an image and I get the db.0023 error unable to reacquire device error.

Ed

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RyanZhao
Moderator
Moderator

Hi Ed,

Have you set [ProjectName].cydwr -> Debug select as SWD?

And then please refer the kit's schematic, if there are any components added on SWD pins, please remove them.

In addition, this KBA is FYI,

Troubleshooting PSoC® 3/4/5LP Programming/Debugging Issues - KBA210619

Thanks,

Ryan

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3 Replies
RyanZhao
Moderator
Moderator

Which PSoc5 LP KIT are your using?

And Are you using the debugger on board to program PSoC5?

Thanks,

Ryan

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EdPo_1556871
New Contributor

I am using the cy8ckit-059 psoc 5lp board and using the attached programmer.

Ed

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RyanZhao
Moderator
Moderator

Hi Ed,

Have you set [ProjectName].cydwr -> Debug select as SWD?

And then please refer the kit's schematic, if there are any components added on SWD pins, please remove them.

In addition, this KBA is FYI,

Troubleshooting PSoC® 3/4/5LP Programming/Debugging Issues - KBA210619

Thanks,

Ryan

View solution in original post

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