F28xx on chip flash programmer problem

Hi,

I think you should be a bit more precise what you would like to do, and what the problem is... It is very difficult to guess from your description.

Best regards

Andreas

Hi Andreas

Sorry for the bad description.

1) I had a project that works fine with the "F28035_RAM_lnk.cmd" link file

2) I added another module and variables which take a lot of RAM space, therefore the prject did not link

3) In order to solve this problem i changed the link file to "F28034_CLA_lnk.cmd"  - now the program links but i can not burn it in the usual way (file > load program) 

4) In order to load the program i actives the option "Tools > F28xx on chip programmer" - the program load without an error

5) However the program does not seem to run OK - when i halt the program it stops in various places e.g "ILLEGAL_ISR",  "_DSP28x_usDelay"

6) The program never gets to the main function (it does not stop in breakpoint in the first line of main)

Thanks for your kind help,

Eyal Ben Artsi

OK this make things more clear...

Did you change the linker command file, such that you mapped all your code/data into flash sections, or is probably still a part residing in RAM?? You can check this by inspecting the map file that is generated by the linker.

There is a very good FAQ and Application notes available under http://processors.wiki.ti.com/index.php/Category:Flash_for_C2000 

Best regards

Andreas

Andreas Hi

Our project use the CLA and the CPU memory, thus i use the "F28035_CLA_lnk.cmd" link file that define the correct memory sections.

All the code/data are mapped well in this file and there is no conflict in the map file, but still the program does not get to the main function!

Best Regards

Eyal

The code for the "_DSP28x_usDelay" function is default executed from RAM and called from DeviceInit(), BEFOR MemCopy().

Leave the Delay function in Flash or execute MemCopy() first.

Best regards, Leo Bosch

Hi

Execute the memcopy() first or leave the delay in flash does not solve the problem.

The main issue is when i load the program from the "F28xx on chip programmer" (the compile and  link are OK) - the program load without an error!

However  the program does not seem to run OK - when i halt the program it stops in various places e.g "ILLEGAL_ISR",  "_DSP28x_usDelay" 

The program never gets to the main function! (it does not stop in breakpoint in the first line of main)

When i check the map file it seem that everything is OK and there is no conflicts

What is the problem?

Thanks,

Eyal Ben Artsi
 
 

Hi,

Did you configure the boot selection Pins to boot from FLASH? Does your hardware boot from flash when you download one of the TI example projects?

Best regards

Andreas

Hi

Yes i did

I set SW2 to ON ON position - in order to boot from flash

Now things work OK - Mr Leo Bosch was right !

The memcopy() and memset() shuold be execute before DSP28x_usDelay, which is located in RAM.

I did not notice that i had another calling of InitADC (which include the DSP28x_usDelay)  after memcopy() and memset() 

I thank you and  Mr Leo Bosch 

Best Regards,

Eyal

Hi Leo

You right!

Thanks and Best Regards

Eyal