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F28035 - Problem in SCI boot mode while using codeskin

Alok Miglani
Prodigy 10 points

I am facing problem in connecting F28035 to code skin utilitty in SCI Boot Rom mode.

I am able to get into SCI boot mode but while debugging the Boot ROM code, I have seen controller is not responding with 0x41 in reply to 0x41 from serial utility (codeskin) required for connection.

Controller gets 0x41 and put the same into SCITxBUF for transmission but there isnt any transmission on the SCi tx line, not even on the controller's pin (checked using CRO), hence connection fails everytime.

We even checked the controller by dumping our sci application through JTAG and that works fine means controller and connections are proper.

We are using the same SCI port for application hence i could not doubt on anythng else except Boot Rom code or code skin utility.

The only change in our code and Boot Rom SCI code is the use of Auto Baud Lock but we are getting 0x41 on SCI-Rx. I am very confused.

Please reply as soon as possible, its urgent.  

 

  • 0
    TI__Guru* 87155 points

    Miglani,

     

    Codeskin is not affiliated with Texas Instruments, Inc. Please check with the codeskin developers for suggestions.

    SCI part of BootROM code has been verified with no known issues.

     

    You can try to check couple of things:

    1)       Try a lower baud rate (Refer to Codeskin FAQ section at http://www.codeskin.com/c2oooProg_faq.html and contact Codeskin for support at lower baud rate)

    2)       Make sure you are not loading code in to M0 RAM area which is used as stack for BootROM

     

    Regards,

    Vamsi