Compiler/TMS320F28069M: Secondary Bootloader development in Flash

Tool/software: TI C/C++ Compiler

Hi,

I want to develop a secondary bootloader for TMS320F28069M controller using SCI A, which i want to place in flash sector H and application to be load in flash sector A-F.

I'm doing this project on Launchxl-f28069M and .hex file is downloaded using codeskin's C2Prog.

[History]

Iniatially I refer docs , Serial Flash Programming of C2000 , etc

After some search, I tried example code of flash kernal from controlsuite-[ ti\controlSUITEv3.4.7\device_support\f2806x\v151\F2806x_examples_ccsv5\f28069_flash_kernel ]. It worked, the application code was loaded  using " C2prog " and running through Flash.

As the code run from RAM , I changed command file to run from  flash with reference to flash_programming example code [ti\controlSUITEv3.4.7\device_support\f2806x\v151\F2806x_examples_ccsv5\flash_programming]  with memcpy necessary functions to RAM and used " Example_Flash28069_API.cmd " file.

I made changes to load my code at Flash sector H. I have attached my changed .cmd file.

for _c_int00 to point to application,I did

void main()

{

....

ApplicationPtr = (void *)SCI_Boot(); 
ApplicationPtr();

// return SCI_Boot();

}

[Result]

SCI functions were executed properly, but in CopyData() function at "Flash_Erase((SECTORA | SECTORB | SECTORC | SECTORD | SECTORE | SECTORF), &FlashStatus); command "

it jump to 0x3ff7d7 address and shows " no source available" [as viewed in disassembly].

Then during next turn there was an error, " C28xx: Flash Programmer: Error encountered when writing to flash memory " - In memory browser password locations are 0xFFFF , but seems locked.

[Query]

1. As I'm a beginner- " plz let me know what changes I have to make in .cmd file"

2. Is there a need to include Flash2806x_API_V100.lib in project.

3. My code can be loaded in RAM, Is there any way to recover the FLASH.

Example_Flash28069_API.zip