TMS320F28035 device locked

Jiayi Hu

Other Parts Discussed in Thread: CONTROLSUITE

hi,

i've been using F28035 on solar explorer kit to track mpp,and when i implemented my own mppt-programme on the chip. the following error shows

''Device Calibration not complete, check if device is unlocked and recalibrate.C28xx: Flash Programmer: Device is locked or not connected. Operation cancelled.
C28xx: GEL: File: C:\ti\controlSUITE\development_kits\SolarExplorer_v1.0\SolarExplorer_PVInverter_F2803x\F2803x_FLASH\SolarExplorer_PVInverter.out: Load failed.''

i tried to search for answers in the forum,and i did find some solutions

2.Unlock the TMS320F28035
    View > Target Configurations > Navigate to the configuration inside FlashingLeds-F28035 > Launch Selected Configuration (right click)
    Run > Connect Target (C28xx) > Resume > Suspend
    Tools > Memory Map > On-Chip Flash > Code Security Password > Unlock (button). Error because password is wrong.
    Tools > Memory Map > On-Chip Flash > Code Security Password > Key 7 > Change from FFFF to FFFE
    Unlock (button
    Tools > Memory Map > On-Chip Flash > Erase Sector Selection > Sector A > Erase flash (button)
    Terminate debug
    Reset Experimenter’s kit
    Debug example on hardware. Resume. Suspend. This works because the device is unlocked.

like the obove one in refrence to http://e2e.ti.com/support/microcontrollers/c2000/f/171/p/244748/858217.aspx#858217

but when i change the password from FFFF to FFFE and press the unlock button,the following showed

C28xx: Starting device unlocking...
C28xx: Flash Programmer: Error unlocking flash memory. Device is still locked

what can i do? can anybody help me?

best regards

Jiayi Hu

over 10 years ago

0 Manoj Santha Mohan over 10 years ago

TI__Guru 55700 points

Jiayi Hu,

If you don’t have password programmed, we don’t have any option but to replace that part.

But before you replace, I would advise you to check your previous code to see what was getting programmed into flash password locations

Regards,

Manoj

0 Jiayi Hu over 10 years ago in reply to Manoj Santha Mohan

Prodigy 250 points

hi manoj

thank you for your reply. By "replace that part",do you mean replace the controlcard? because i've changed another same controlcard and the programme can be implemented without any problem.I don't think I've programmed any code related to the password. How is that happening?

best regards

Jiayi Hu

0 Manoj Santha Mohan over 10 years ago in reply to Jiayi Hu

TI__Guru 55700 points

Yes, if the part is accidentally locked without the user knowing password. Only option would be is to replace the part (or) in your case control card.

Accidentally locking the parts can happen in the following cases

when device loses power (or) reset when flash api is trying to erase / program the device.
We have seen novice user in the pretext of learning CSM feature locking the device.
User doesn;t release their example code includes DSP2803x_CSMPasswords.asm which when modified and programmed will lock the device.

Regards,

Manoj

0 Jiayi Hu over 10 years ago in reply to Manoj Santha Mohan

Prodigy 250 points

Hi manoj

Thank you, it's good to know that! Btw,how should I deal with the old control card? Is it useless now? Or it can be repaired?

0 Manoj Santha Mohan over 10 years ago in reply to Jiayi Hu

TI__Guru 55700 points

If you replace the device, control card can still be used.

-Manoj

0 Jiayi Hu over 10 years ago in reply to Manoj Santha Mohan

Prodigy 250 points

Hi Manoj

thank you so much for your reply

Regards,

Jiayi Hu

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28035 device locked