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TMS570LS1224: flashing discrepancy (Uniflash, Code Composer Studio)

Patrick Hurley
Prodigy 10 points

Part Number: TMS570LS1224
Other Parts Discussed in Thread: UNIFLASH

I have a TMS570LS1224 that is having strange behavior when flashed.

We have also seen this on other units, but yet to find a reliable way to reproduce.

Effectively, we have a unit that is soft bricked. I attempt to recover it via Uniflash, our standard package for flashing, and the flashing succeeds. (Specifically selecting the sectors the bootloader will be loaded into)

However the known working software doesn't work.

If I flash via Code Composer Studio, following the same process, the unit becomes functional. If the specific sectors the bootloader is going into are not selected and its left to the flashing utility to determine, the unit will still fail.

Further, if I flash it again via Uniflash the software stops working, exhibiting the original symptoms.

To me this indicates that Uniflash and CCS do not flash the same way?

Another little detail, after a seemingly random number of flashes via Uniflash by an automated system on the same unit with the same software, it started working again.

Additionally, what steps would need to be taken to effectively "factory reset" a unit? I would expect a regular flash erasing all sectors via Uniflash to do this, but the above would indicate differently.

  • 0
    TI__Guru**** 199346 points

    Hi Patrick,

    I am sorry I didn't get your point. Does the device flash contain bootloader and application firmware? and the bootloader is at the beginning of flash (starting from 0x00000000), and the application firmware is located in other sectors, right?

    Patrick Hurley said:
    and the flashing succeeds. (Specifically selecting the sectors the bootloader will be loaded into)

    Do you mean the bootloader is loaded successfully? When you load the bootloader, but don't want to erase the application firmware located in flash sectors, please use the option of "Necessary Sectors Only".

    Patrick Hurley said:
    However the known working software doesn't work.

    The bootloader is loaded, but it doesn't work?

    Patrick Hurley said:
    If the specific sectors the bootloader is going into are not selected and its left to the flashing utility to determine, the unit will still fail.

    Can you try "Necessary Sectors only"? The CCS flash programmer knows which sectors will be used. The linker command file contains the information.

    Both CCS and Uniflash use the same flash driver for erasing and programming the flash.