TMS320F28388D: Code loading from Flash memory but it is not working after power reset (led stopped blinking)

Please check your entry point is correct in flash and also you have included f2838x_codestartbranch.asm file in your code.

Hello Vivek,

As I am new to CCS and TI board, Can you please elaborate how could I entry point in FLASH and f2838x_codestartbranch.asm file in my code

If you could provide any settings or reference images for above settings

Regards

Bandi 

All our examples in C2000Ware should have these settings. Just check if you have f2838x_codestartbranch.asm file included in your project.

Hello vivek,

Yes I could see f2838x_codestartbranch.asm file included in my project, sharing for your reference.

Still I am not able to boot the code from FLASH using (1,1) combination, Any suggestions?

;//###########################################################################
;//
;// FILE:  f2838x_codestartbranch.asm
;//
;// TITLE: Branch for redirecting code execution after boot.
;//
;// For these examples, code_start is the first code that is executed after
;// exiting the boot ROM code.
;//
;// The codestart section in the linker cmd file is used to physically place
;// this code at the correct memory location.  This section should be placed
;// at the location the BOOT ROM will re-direct the code to.  For example,
;// for boot to FLASH this code will be located at 0x3f7ff6.
;//
;// In addition, the example F2838x projects are setup such that the codegen
;// entry point is also set to the code_start label.  This is done by linker
;// option -e in the project build options.  When the debugger loads the code,
;// it will automatically set the PC to the "entry point" address indicated by
;// the -e linker option.  In this case the debugger is simply assigning the PC,
;// it is not the same as a full reset of the device.
;//
;// The compiler may warn that the entry point for the project is other then
;//  _c_init00.  _c_init00 is the C environment setup and is run before
;// main() is entered. The code_start code will re-direct the execution
;// to _c_init00 and thus there is no worry and this warning can be ignored.
;//
;//###########################################################################
;//
;//
;// $Copyright:
;// Copyright (C) 2022 Texas Instruments Incorporated - http://www.ti.com
;//
;// Redistribution and use in source and binary forms, with or without 
;// modification, are permitted provided that the following conditions 
;// are met:
;// 
;//   Redistributions of source code must retain the above copyright 
;//   notice, this list of conditions and the following disclaimer.
;// 
;//   Redistributions in binary form must reproduce the above copyright
;//   notice, this list of conditions and the following disclaimer in the 
;//   documentation and/or other materials provided with the   
;//   distribution.
;// 
;//   Neither the name of Texas Instruments Incorporated nor the names of
;//   its contributors may be used to endorse or promote products derived
;//   from this software without specific prior written permission.
;// 
;// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
;// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
;// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
;// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
;// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
;// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
;// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
;// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
;// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
;// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
;// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;// $
;//###########################################################################

***********************************************************************

WD_DISABLE  .set  1    ;set to 1 to disable WD, else set to 0

    .ref _c_int00
    .global code_start

***********************************************************************
* Function: codestart section
*
* Description: Branch to code starting point
***********************************************************************

    .sect "codestart"
    .retain

code_start:
    .if WD_DISABLE == 1
        LB wd_disable       ;Branch to watchdog disable code
    .else
        LB _c_int00         ;Branch to start of boot._asm in RTS library
    .endif

;end codestart section

***********************************************************************
* Function: wd_disable
*
* Description: Disables the watchdog timer
***********************************************************************
    .if WD_DISABLE == 1

    .text
wd_disable:
    SETC OBJMODE        ;Set OBJMODE for 28x object code
    EALLOW              ;Enable EALLOW protected register access
    MOVZ DP, #7029h>>6  ;Set data page for WDCR register
    MOV @7029h, #0068h  ;Set WDDIS bit in WDCR to disable WD
    EDIS                ;Disable EALLOW protected register access
    LB _c_int00         ;Branch to start of boot._asm in RTS library

    .endif

;end wd_disable

    .end

;//
;// End of file.
;//

Thanks & Regards

Bandi 

Are you using the Flash build configuration ? 

PFA, Yes I am using flash build configuration

Since everything looks ok, you may want to re-check the value on BOOT pins. Check the value in GPIO register for BOOT pins via CCS register view and see if these are reading it correctly.

Vivek Singh