ISSUES WITH THE DEBUG XDS110 AND MSP432

Hi Martin!

Is it the first time you are using this MSP432 LaunchPad or did it work before?

Please make sure you do not have any physical damage on your board, like overheating parts. There are a few user's having trouble with it. For more information about this, please look at the end of this post.

Idiot question first: Is S101 on the LaunchPad set to the correct position (XDS-ET)?

Some things to check - could you please open your MSP432P401R.ccxml file, click on Advanced on the bottom of the window and look at the settings for the Texas Instruments XDS110 USB Debug Probe:

Is it the same for you?

If you click on Test Connection, what does it say? Note that if you changed something you have to click on Save first.

If the connection works, great :) Then it should look like this:

If not...I will brick my board later in this post (and then recover it), just go on, although you do not need to try the steps before the connection works.

Can you additionally check if the following settings are also right:

Let's try to perform a factory reset to your board - to do so, click on View -> Target Configurations:

A new window opens - expand the tree like shown in the picture and right-click on the MSP432P401R.ccxml file, then select Launch Selected Configuration:

Now a Debug window opens. Right click on MSP432P401R.ccxml and select Show all cores:

Now expand the tree as shown, right click on the XDS110 USB Debug Probe/CS_DAP_0 under Non Debuggable Devices and select Connect Target:

Now click on Scripts -> default -> MSP432_Factory_Reset:

Now press on STOP (red square), disconnect the power of the board, connect it again and give it a try.

If this does not work... and you get an error message and cannot connect to the board, you may have disabled your JTAG by changing the PJSEL0 and PJSEL1 bits. I just tried that and flashed the following program to my MSP-EXP432P401R LaunchPad:

#include "msp432p401r.h"

void main( void )
{
  WDTCTL = WDTPW | WDTHOLD;

  PJSEL0 = 0xFF;
  PJSEL1 = 0xFF;

  while( 1 )
  {

  }
}

This immediately bricks it because the JTAG functionality is disabled. This appears after starting the program:

Open the Target Configuration again - we will try to establish a connection by pressing on Test Connection...

...but this is the response:

To get it working again, select SWD Mode - Aux COM port is target TDO pin:

Don't forget to save the new configuration. Now perform the Factory Reset as described above. After the power cylce you can switch back to JTAG.

You can also experiment with the JTAG speed:

Does this work for you?

Dennis

Link to the C125-issue which potentially can damage the board: