Unable to connect LPC Link-2 to LPC54606 using SWD

[hemanthvasista]

Hello ,

I am unable to connect LPC Link-2 to NXP LPC54606 controller.

SWDIO (PIO0_12) with pullup to LPC Link-2 (J7 pin-2)
SWO (PIO0_8) with pullup to LPC Link-2 (J7 pin-6)
SWCLK (PIO0_11) with pulldown to LPC Link-2 (J7 pin-4)
RESETN with pullup to LPC Link-2 (J7 pin-10)

1. Are there any other conditions that needs to be considered?
2. SWO can be PIO0_8 or PIO0_10, should any configuration be done by user?
3. What should be the state of ISP0, ISP1 & ISP2 pins? (All these pins are pulled up)

regards,
Hemanth

[Alice_Yang]

Hello hemanthvasista,

You can also have a look at the schematic about LPCpresso54628 board:

https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mc... 

[converse]

Try this:

https://community.nxp.com/t5/LPCXpresso-IDE-FAQs/Design-Considerations-for-Debug/m-p/469565

[hemanthvasista]

I tried the things described in the that link without any success

[converse]

Check power. And double check your debug connections.

[hemanthvasista · Accepted solution]

The issue was because of the existing code in the flash which configured the SWD pins as Analog Pins.

Erasing of the flash and then SWD interface started to work.