Interrupt make hang

Bababeyk HamidReza

Prodigy 175 points

Other Parts Discussed in Thread: TMS570LS20216, HALCOGEN

I use TMS570LS20216 in my custom board.

I use sci serial transmit interrupt.Vim fill correctly ( IRQ 13 High level SCI) and other setting is ok,

but after execute PC jump to 0x04 (undefined instruction) .I see debugger output,VIM is ok,IRQ index is ok and

IRQvector point to correct location, also IRQ stack size is 0x200 but it seams that pc fetch an invalid place(not vim).

over 11 years ago

0 A Arora over 11 years ago

TI__Mastermind 30845 points

Hi,

Please have a look at the following threads as they discuss similar issues:

TMS570LS0432 _undefined istruction triggered entering into interrupt routine

Undefined Instruction (Floating point operation)

TMS570: SCI Rx interrupt problem

Regards,

Abhishek

0 Jean-Marc Mifsud over 11 years ago in reply to A Arora

TI__Mastermind 22375 points

Bababeyk,

Are you using Halcogen to generate your code? If yes, which version.

When you create a project with CCS, you have to specify the part you are using. If the selected part includes the FPU (this is your case) than by default the FPU is used.
On exception the compiler will save some FPU register in the stack.

Now from an hardware point of view, the FPU is disabled when you reset your part and code has to be executed to enable the FPU.

In Halcogen, under the CORTEX-R4F tab, there is a check box to generate the code (and the call) to enable the FPU.

So check on both side (CCS and Halcogen) that the usage of FPU is consistent.

If the FPU is not enabled and the code you execute includes FPU instruction, the code will trap in Undefined Instruction.

0 Bababeyk HamidReza over 11 years ago in reply to Jean-Marc Mifsud

Prodigy 175 points

Thank you for prompt reply.

I find enable FPU in Halcogen but what do you mean both side also CCS?

Thank.

0 Jean-Marc Mifsud over 11 years ago in reply to Bababeyk HamidReza

TI__Mastermind 22375 points

In CCS, under project properties check for the following:

In processor options, there is an entry for "Specify floating point support = VFPv3D16.
If this is the case, the code generator will use and generate code using the FPU, If in Halcogen the enable FPU is check than you are good to go.

If you can share your project (CCS and Halcogen) I can have a look and see what is going wrong.

0 Bababeyk HamidReza over 11 years ago in reply to Jean-Marc Mifsud

Prodigy 175 points

Thank you jean

I disable FPU on both side and it work correctly.

Arm-based microcontrollers

Arm-based microcontrollers forum

Interrupt make hang