topic LPC5528 SWD not working in LPC Microcontrollers

LPC5528 SWD not working

alex__ — Thu, 29 Oct 2020 06:43:23 GMT

Hello, community.

I have a board with LPC5528JBD64K and for configuring it I use MCUXpresso IDE. MCU is ok (UART, ADC and other peripherals work), but I cannot flash and debug it using J-link, cuz error "Wrong DM-AP IDCODE detected" appears.

SWD clock is configured in MCUXpresso. Connection between MCU and SWD pins is ok. I tried to pull ISP entry pin to VCC and GND, nothing changes.

It is my first time with LPC, so, maybe, I forget to set some bits or anything else to turn debugging on.

Re: LPC5528 SWD not working

Alice_Yang — Mon, 02 Nov 2020 02:30:02 GMT

Hello alex__,

About the SWD hardware design, you can refer to LPCxpresso55s28 board:

https://www.nxp.com/design/software/development-software/lpcxpresso55s28-development-board:LPC55S28-EVK

In MCUXpresso IDE, Just click "Debug" button under Quickstart Panel:

If still can't work, please take a video or take screenshot to show your steps.

Regards,

Alice

Re: LPC5528 SWD not working

alex__ — Thu, 29 Oct 2020 13:28:23 GMT

SWD connected directly to the programmer:

Clock configuration:

And the error code(in SEGGER J-flash, MCUXpresso returnes the same code):

Re: LPC5528 SWD not working

Alice_Yang — Mon, 02 Nov 2020 03:01:36 GMT

Hello alex,

You can have a look at this thread:

https://forum.segger.com/index.php/Thread/4302-SOLVED-Target-Connect-J-Link-Error-Check-connection-and-target-interface-type/

And about the J-link debug, recommend you also ask help on Segger support, they know the j-link deep.

https://www.segger.com/

Regard,

Alice