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TMS320F2809: Device locked message - Code Composer Studio

Subramanian Ramachandran
Prodigy 30 points
Part Number: TMS320F2809


Hi,

I am using the military grade equivalent of the TMS320F2809 chip in my product. I am unable to flash my updated firmware in the chip. I keep getting a locked message on Code Composer Studio.

I have attached two screenshots to this ticket to provide a better picture.

If a password was used to secure the chip, I do not know what that is. My question is - how can I remove/erase the existing device lock, if any, and reprogram the chip either through JTAG or through the boot loader?

Please advise.

Subramanian

  • 0
    TI__Guru* 95315 points

    Subramanian,

           It looks like you are updating the firmware, which means the Flash was already programmed. If your project never contained passwords but your device appears to be locked now, it is possible that your device was inadvertently locked.

    If the devices are indeed locked and you are unable to connect/unlock them via CCS, I am afraid your only choice is to replace the parts. Devices may become inadvertently locked if the Erase/Program operation is disturbed due to a brown-out/black-out condition. This could also happen if the devices are current-starved during erase/program operation. See https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/826343

    Subramanian Ramachandran said:
    how can I remove/erase the existing device lock, if any, and reprogram the chip either through JTAG or through the boot loader?

    Unfortunately, this is not possible. Without knowing the passwords, it is not possible to erase the Flash.