CCS/TMDSCNCD28379D: Flash works different from RAM

Hi Luiz,

You need to provide some more detail for someone to understand the issue and provide some suggestion. Also I hope you have looked into the flash based example in C2000Ware and check then on your setup to make sure those work fine.

Regards,

Vivek Singh

Vivek Singh said:

Hi Luiz,

You need to provide some more detail for someone to understand the issue and provide some suggestion. Also I hope you have looked into the flash based example in C2000Ware and check then on your setup to make sure those work fine.

Regards,

Vivek Singh

Luiz,

With flash configuration if your application start fine but stop operation in between then you need to step through the code to debug this. All RAMs are '0' wait state memory but flash are not so there could be some timing issue. Also one quick thing to check is value of NMIFLG register after application stops the operation to see if there is any error.

Regards,

Vivek Singh

Vivek Singh said:

With flash configuration if your application start fine but stop operation in between then you need to step through the code to debug this. All RAMs are '0' wait state memory but flash are not so there could be some timing issue. Also one quick thing to check is value of NMIFLG register after application stops the operation to see if there is any error.

Sorry, but I didn't understand your statement : "All RAMs are '0' wait state memory but flash are not so there could be some timing issue."

Hi Luiz,

What I mean is RAM accesses are always single cycle access but flash accesses are not hence that could cause issue if the application waits for certain event at specific time. To know the issue you have to step through the code and check.

Regards,

Vivek Singh

Hi Luiz,

Were you able to root cause the issue by stepping through the code?

Regards,

Vivek Singh

Hope you were able to debug the issue further. If you have any further queries, please let us know. If not, please close this post.

Vivek Singh

I haven't found the solution yet.

But I've found some clue.

When I build the project to the RAM (this time I uninstalled everything and installed again)  I received the following error:

"error #10010: errors encountered during linking; "wind.out" not built"

I identify this error as a memory limit, then I change my original 2837xD_RAM_lnk_cpu1.cmd for this one:

PAGE 0 :

   /* BEGIN is used for the "boot to SARAM" bootloader mode   */

   BEGIN           : origin = 0x000000, length = 0x000002

   RAMM0           : origin = 0x000122, length = 0x0002DE

   RAMD0           : origin = 0x00B000, length = 0x000800

   RAMLS0          : origin = 0x008000, length = 0x002000

//   RAMLS1          : origin = 0x008800, length = 0x000800

//   RAMLS2      : origin = 0x009000, length = 0x000800

//   RAMLS3      : origin = 0x009800, length = 0x000800

   RAMLS4      : origin = 0x00A000, length = 0x000800

...

AND this times works on RAM, OK but when I try make the project to Flash the CCS didn't show any error, BUT the program didn't work. I did not change the  2837xD_FLASH_lnk_cpu1.cmd.

Any help?

Luiz,

Sorry, you need to step through the code in CCS to understand the issue.

Regards,

Vivek Singh

Hi Luiz,

Were you able to step through the code to see which part of the code causing this issue?

Vivek Singh

Yes, I am able to step thought the code. What we observed is that the code stop working in some part when we turned on the PID control (it is important to say that the code works smooth on RAM).