Error with new Piccolo Hardware

Tim King16278

Hi all,

We just built some custom prototype boards with TMX320F28027 LQFPs. However when we connect them via JTAG using either a USB100 or USB2000 emulator an error appears when we go to debug in CCS4. The error "Device Calibration not complete, check if device is unlocked and recalibrate. " appears and we are unable to write to secure RAM (L0). So I made a program which performs the device_cal routine and placed it in M0 RAM. This worked. However the original error text still appeared and when I went to write a different program to secure RAM it failed like before. I checked the CSM passwords and they are unlocked (0xFFFF) when read. Also after the boot routine is run, L0 RAM can be read, but I can't program to it still. This problem has occurred on multiple boards and with both CCSv3.3 and CCS4.

Has anyone come across these problems before and does anyone have any suggestions and/or solutions?

Tim

over 16 years ago

0 Tim King16278 over 16 years ago

Prodigy 60 points

I checked my target hardware and all the JTAG connections look fine and VDD = 1.9V and VDDIO = 3.3V.

0 Mike40968 over 15 years ago in reply to Tim King16278

Prodigy 10 points

Hi Tim,

Have you found the solution to you problem? Cause I'm experiencing exactly the same problem and can't seem to find an answer...

Mike

0 Tim King16278 over 15 years ago in reply to Mike40968

Prodigy 60 points

The problem we had was with the BOR. It was put in the errata after we fixed it. The errrata are here:

http://focus.ti.com/lit/er/sprz292c/sprz292c.pdf

In our original design, we copied the reference designs of the control cards which included inductors between Vddio/Vdd and the pins, and replacing them with 0R resistors managed to fix the problem. We had no problems after these were changed. Hope this helps.

Tim

C2000™︎ microcontrollers

C2000 microcontrollers forum

Error with new Piccolo Hardware