LAUNCHXL-F28379D: Interrupt Vector Table memory not used - PIE_VECT 00000d00(origin) 00000200(length) 00000000(used) 00000200(unsed)

venkatesh chilapur

Part Number: LAUNCHXL-F28379D
Other Parts Discussed in Thread: C2000WARE

We have a problem that 2 projects are compiled with the same linker command file, but one project is able to allocate PIE vector table successfully as seen from the .map file but other project is not.

Please find the snapshot below:

1st snap -PIE_VECT used is zero

2nd project, same .cmd file - PIE_VECT used is 0x1C0 as shown below:

What could be reason for this?

And I believe it is because of this we are seeing the following error in CCS, as shown in below snap:

Any idea on the same?

over 5 years ago

0 Ozino Odharo over 5 years ago

TI__Genius 15811 points

Hi,

Can you double check that the interrupts are configured correctly in the project that is not working.Sounds like it may not be correctly configured in one of the projects. Please reference the interrupt examples in C2000Ware to ensure that the interrupts are configured correctly.

For more information check out this FAQ: https://processors.wiki.ti.com/index.php/Interrupt_FAQ_for_C2000

Regards,

Ozino

0 venkatesh chilapur over 5 years ago in reply to Ozino Odharo

Mastermind 6460 points

Hi,

I found the following difference and could make it work. But can you help me understand why this will cause the issue? But my interrupts still worked without vector table getting the memory allocated, how is that? Please note: I just removed 'TYPE=DSECT' and it started working and the memory was allocated.

UNION run = PIE_VECT, PAGE = 1
{
PieVectTableFile :
GROUP
{
EmuKeyVar :
EmuBModeVar :
FlashCallbackVar :
FlashScalingVar :

Before it was:

UNION run = PIE_VECT, PAGE = 1

{
PieVectTableFile : TYPE=DSECT
GROUP
{
EmuKeyVar : TYPE=DSECT
EmuBModeVar : TYPE=DSECT
FlashCallbackVar : TYPE=DSECT
FlashScalingVar : TYPE=DSECT

0 Ozino Odharo over 5 years ago in reply to venkatesh chilapur

TI__Genius 15811 points

Hi,

Please note the DSECT is rarely used and are NOT allocated to memory. This explains why it was not allocated to a memory location. Here is a wikipage that explains when it is best appropriate to use the label. https://processors.wiki.ti.com/index.php/Linker_Special_Section_Types

Regards,

Ozino

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LAUNCHXL-F28379D: Interrupt Vector Table memory not used - PIE_VECT 00000d00(origin) 00000200(length) 00000000(used) 00000200(unsed)