CCS/MSP432P401R: MSP432 CS-DAP_0 : Error connecting to the target: (Error -1170@ 0x0)

Part Number: MSP432P401R

Tool/software: Code Composer Studio

Hi Everyone,

I have designed a board with the MSP432, following the MSP432 launch pad.

I brought up the board successfully and was able to communicate with some SPI/I2C devices.

After some SPI commands, The CCS tell me that the device is no found. I tried to re-enter the debug session. I got the following error message.

"CS-DAP_0 : Error connecting to the target: (Error -1170@ 0x0) unable to access the DAP, reset the device and retry the operation."

I did a board reset, but did not work.  When i tried to follow the factory reset instruction, I was told that I could not access DAP.

Any idea on how to fix this?

Best,

Eddy