RM48L952: Debug Error

Hi Rakesh,

Please go through this page to debug the JTAG connection further: 

https://software-dl.ti.com/ccs/esd/documents/ccs_debugging_jtag_connectivity_issues.html

Another link which will be use to troubleshoot at connection phase: 

software-dl.ti.com/.../ccs_debugging_jtag_connectivity_issues.html

It looks like the code you programmed is making the part enter an exception state repeatedly. This prevents the CPU from entering a debug state, resulting in the behavior you observe. You need to try to erase the part, assert and release nRST to see if the erase command is able to halt the CPU and erase the flash.

Please try this procedure to let CPU enter a debug state:

1. Open the target configuration window, and launch the selected the configuration

2. Switch to debug window

3. Press the reset (nRST) button and hold it

4. Click “Connect Target” immediately after you release the nRST button

5. The board should be connected after couple tries

Hello Wang,

I have tried the way you suggested above but it didn't work and I also gone through the links you have shared but that is not helping. Is there anything else I can try as am trying to fix this from last three days.

Thanks

Hi Rakesh,

Did you check the power supplies (1.2V, 3.3V)? If they are not in a valid range, the device won't work properly.

Also please check LED D12 to see if it is ON after USB cable is plugged into HDK miniUSB port. D12 is located at U27 (FTDI chip).

Hello Wang,

I have checked the power supplies(1.2V on TP14 and 3.3V on TP16) everything looks fine. Also I checked the D12 LED it is also ON.

Thanks