Cannot debug custom board with lpc54S016 controller, gets struck in ResetISR()

[NVazquez]

I tried to debug the code on one of our new prototype board, but I get struck in ResetISR()

I get this screen when I enter into debug section,

NVazquez_0-1657058265900.png

When I hit pause I get struck here,

NVazquez_1-1657058290958.png

I think something is not right with the BootROM.

Not sure what's going on, any help is appreciated. 

[NVazquez · Accepted solution]

I created a new project and added parts from the old project. Right now the new project is exactly the same as old one( in which debug didn't work ), but I can debug the new project. 

[xiangjun_rong]

Hi,

I do not think the phenomenon is related is BOOT ROM.

I suppose that your hardware has issue, which force the LPC54s016 to reset constantly.

pls check the power supply pins, spifi flash, clock...

BR

XiangJun Rong

[NVazquez]

I tried to write a small code with initialization, and I was able to program the board and also debug the code. Can we eliminate that there might be something wrong with the hardware?