Where is VECTTBL on Concerto M3?

EGold

Where is VECTTBL on the Concerto (F28M35H52C1) as referenced in the technical reference manual (SPRUH22) section 1.5.2 (revision C, bottom of page 101)?

I am trying to debug an intermittent bus fault, and can't find what this is supposed to be. The behavior I'm seeing indicates that it might be set, but I can't find where to look for it.

over 13 years ago

0 Santosh Athuru over 13 years ago

TI__Mastermind 19810 points

Chapter 26 has exception model and chapter 27 has NVIC registers.

Best Regards

Santosh

0 EGold over 13 years ago in reply to Santosh Athuru

Prodigy 160 points

Indeed, although I am still missing something. What is VECTTBL? Is it the same as VECT in the HFAULTSTAT register?

0 Santosh Athuru over 13 years ago in reply to EGold

TI__Mastermind 19810 points

you are right, looks like those are internal error codes. I don't think there is a status bit or user level status information associated with it other than generation of the BUSFAULT.

if you are having a bus fault its either because you are trying to write to some peripheral reigsters without calling sysCtrlPeripheralEnable or you are having double bit errors on RAM. The later one is unlikely as the GEL scripts would be doing a RAM-INIT on connect or the bootROM would have already done the RAM-INITs.

Best Regards

Santosh

0 Santosh Athuru over 13 years ago in reply to Santosh Athuru

TI__Mastermind 19810 points

after checking with other experts, the UNSTKERR and VECTTBL error status are in fact set in the BFSR (Bus Fault Status Register) and HFSR (Hard Fault Status Register). These are described in Cortex M3 Manual page 177 (8-33) and page 180 (8-36). Cortex M3 manual can be found here (http://infocenter.arm.com/help/topic/com.arm.doc.ddi0337e/DDI0337E_cortex_m3_r1p1_trm.pdf).

The F28M35x TRM doesn't show these registers, we need to add reference to this in the section.

Best Regards

Santosh

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Where is VECTTBL on Concerto M3?