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F28335 Flash programming issues on custom board with ccs 3.3

xaver graupe
Prodigy 20 points

Hi,

I am having issues in programming a F28335 on a custom board on Flash with CCS 3.3  (I know it's an old version of code composer but all of our testing settings and interfaces in the lab use it). We are using a xds510USB emulator from Spectrum.  The program works fine with emulator connected, but once I disconnect it and power up the board the program does not start, all the pins have been checked and the 4 gpio for the boot are all pulled up. We tried then to use the flashing leds example using ccs5 and it works fine also when the emulator is disconnected and the board is powered up again. I think I am missing some files or options in the ccs 3.3  version.

Thanks in andvance.

  • 0
    Guru 20525 points

    Hi!

    1 I didn't use CCSv.3, but I had the same problem with CCSv.5.2 when my project didn't include the file DSP2833x_CodeStartBranch.asm. At this case the firmware worked at the debug-mode only.

    2 Else I would recommend you pay attention to the post "InstaSPIN_BLDC: How to program the code to the Flash area instead of RAM area of the 28035 piccolo microcontroller". Refer to end of this post.

    Regards,

    igor

  • 0 in reply to Igor Gorbachev
    Prodigy 20 points

    Thanks Igor.

    I red through the post and I have already done all the settings which are mentioned as well as DSP2833x_CodeStartBranch.asm.

    Another test we did was to debug the same program on a eZdsp board and an experiment kit, both F28335, with ccs 3.3 and it worked fine even in standalone mode.

    That seems strange to me because as mentioned previously using an example project debugged with ccs5 on the custom board didn't cause any problem nor during debug mode neither in standalone mode.

    Xaver