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CC2541 OAD cannot reset from Image B after loading of Image A

Dmitry Cheremisin
Intellectual 440 points
Other Parts Discussed in Thread: CC2540

I try to use OAD feature, but I found one issue. My steps are:
1. First I make a big hex file consist of BIM + imgA + imgB,

2. I load firmware (with version 0) into device.

3. Open BLE Device Monitor for OAD. Find my device and enable OAD.

4. It shows me that imgB is active, I choose imgA.bin firmware (with version 1) to load device and it goes well. But then it 100% all is stuck. It preserves the connection and do not resets. If I reset it manually the firmware will be old.

----------------------------------------------------------------------

I discovered why it's happening with debbuger, but I don't know how to solve it:

By some reason CRC and CRC shadow are different, so bootloader never resets here:

Any ideas why this is happening? I using IAR 8.30.3 and BLE stack 1.4. For OAD manager I used CC2540 USB Dongle. Target device based on CC2541F256.

Also I can add, that then I made a file with BIM + imgA, load it into the device, and try to program with OAD imgB everything is fine, it's resets and starts a new imgB firmware. But after that all the same, it cannot load imgA.

  • 0
    Intellectual 440 points

    It's seems to me that I'm converting .hex -> .bin not correctly a little. I'm not using the script from TI that merges hex files or converts .sim file to .bin. I used some popular utilities for that. Because I had some windows problem with script cc254x_ubl_pp.js and if someone will obstacle with similar problem, the solution will be to register windows libraries manually with command line:

    For x32 XP systems:

    1. regsvr32 %systemroot%\system32\vbscript.dll
    2. regsvr32 %systemroot%\system32\jscript.dll
    3. regsvr32 %systemroot%\system32\dispex.dll
    4. regsvr32 %systemroot%\system32\scrobj.dll
    5. regsvr32 %systemroot%\system32\scrrun.dll
    6. regsvr32 %systemroot%\system32\wshext.dll
    7. regsvr32 %systemroot%\system32\wshom.ocx
  • 0 in reply to Dmitry Cheremisin
    Intellectual 895 points

    Hi,

    i am not sure, may be my suggestion will help you. after finished of OAD, just turn off and turn on your IPHONE or IPAD. your image name will be upload. 

    I dont know why its happening? but i facing same problem. i am continuing in this method only. its helping me. please check it.

    If you find any other method please update.

    Thank you,

    MANO MM

  • 0 in reply to Mano Kutty
    Intellectual 440 points

    Hi,

    I'm using CC2540 USB Dongle for OAD now, working with iPhone will be the next step. I'm checking now TI tools for converting .hex & .sim files, may be something wrong with imgA when I converting .hex to .bin, because as I saw an imgA is build in more complicated way then imgB.

    Regards

  • 0 in reply to Dmitry Cheremisin
    Intellectual 440 points

    I finally solved a problem and now OAD is working fine. As I said there was some problem in converting .hex file to .bin. Now I'm using TI tool but only by my own way and everything fine.

  • 0 in reply to Dmitry Cheremisin
    Prodigy 50 points

    Hi,

    can you please share how do you convert hex to bin in your own way ? I seem to be facing the same problem with Image B to working.