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Stepping through code interrupted

Hi everybody,

I'm currently evaluating Arm Development Studio as a replacement for uVision from Keil MDK.

I'm using the most recent version with an STM32H7, currently debugging the M7 core with an STLINK V2 - altough the problem persists with a J-LINK.

Currently, I'm struggling to properly step through code. As I have several periodic interrupts, I'm always ending up in an interrupt.

While this makes sense - interrupts occur at several kHz - this behavior is very different from how debugging worked in uVision where, while stepping through code, interrupts seem to be disabled.

I had a look through the commands listed here: https://developer.arm.com/documentation/101471/2000/Arm-Debugger-commands?lang=en but could not identify a command to disable interrupts while stepping through the code.

Is there any way/option to replicate how uVision stepped through code?

Thanks in advance, any help is highly appreciated!

Parents

0 northh_sven over 4 years ago in reply to Stephen Theobald

Hi Stephen,

Thanks for your quick response!

I'm using step:

wait
step
Execution stopped in Privileged Thread mode at breakpoint 4: 0x08036FA2
0x08036FA2   486,16   logger.Step();
wait
step
Execution stopped in Privileged Thread mode at breakpoint 4: 0x08036FA2
0x08036FA2   486,16   logger.Step();
wait
step
Execution stopped in Privileged Thread mode at breakpoint 4: 0x08036FA2
0x08036FA2   486,16   logger.Step();
disable 4
Breakpoint 4 disabled
wait
step
Execution stopped in Handler mode at 0x08005DD0
In stm32h7xx_it.c
0x08005DD0   172,0   void DMA2_Stream4_IRQHandler(void) {

Please note, that I first have to disable the Breakpoint that stopped execution or else the step command will not advance at all... (the same is actually true for steps, next and continue)

While stepsi is not getting stuck in the breakpoint, it also does not advance the code but enters one of the periodic interrupts...

Execution stopped in Privileged Thread mode at breakpoint 4: 0x08036FA2
In app_m7.cpp
0x08036FA2   486,16   logger.Step();
continue
Execution stopped in Privileged Thread mode at breakpoint 4: 0x08036FA2
0x08036FA2   486,16   logger.Step();
next
Execution stopped in Privileged Thread mode at breakpoint 4: 0x08036FA2
0x08036FA2   486,16   logger.Step();
step
Execution stopped in Privileged Thread mode at breakpoint 4: 0x08036FA2
0x08036FA2   486,16   logger.Step();
steps 10
Execution stopped in Privileged Thread mode at breakpoint 4: 0x08036FA2
0x08036FA2   486,16   logger.Step();
stepi
Execution stopped in Handler mode at 0x0800EA98
In stm32h7xx_it.c
0x0800EA98   292,0   void HSEM1_IRQHandler(void) {

Nothing is selected in Manage Signals:

I suppose, that's how it is supposed to be.

Stepping through code without interrupts enabled works as intended...

Thanks in advance

Sven

P.S.: The usage of logger.Step() here is entirely arbitary, I've seen the same behavior for every instruction I used as a breakpoint.

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