External debugger SWD OR J-TAG

[ujwal_kumar_N_L]

Hi Community ,

Im working on the debugger ofLPC55S69 ,trying to use the microcontroller and program it with external Debugger .

Board :LPC55S69

Debugging using SWD.

PROBLEM:

1. Can we use the external debugger to dump the code to the microcontroller ?(Using only SWD not JLINK).
2. Can we only use  SWCLK,SWDIO and SWO instead of the 10 pin P7 SWD .Only utilizing these 3 pins and debugging it module?
3. Best external debugger for dumping the code .Suggestions.
4. Steps or material regarding the above Debugging.

Thank and Regards 
UJWAL KUMAR N L

[ErichStyger · Accepted solution]

Hello @ujwal_kumar_N_L ,

1. If you mean with 'dump the code to the microcontroller' the programming and flashing of it, then yes: you can use SWD for this. You don't have to use a J-Link, you can use any other debug probe supporting the LPC55S69, e.g. MCU-Link (Pro) or P&E Multilink.

2. You need SWCKL, SWDIO and GND. SWO is a trace pin, see https://mcuoneclipse.com/2021/05/22/swo-with-arm-cortex-m33/

3. Use a J-Link, or program the J-Link firmware on the board. Or use the NXP MCU-Link Pro or non-pro, or use a P&E Multilink. Choice depends on your needs and budget available.

4. https://mcuoneclipse.com/2019/05/18/internal-and-external-debug-options-for-the-nxp-lpc55s69-evk-boa...