SystemView capture initial code (p. 164)

[relayman357]

Hi Brian,

Really enjoying your book. The image on p. 164 shows the SystemView capture of the startup of the Chapter 7 code example. I can't figure out how to make SystemView capture that - I can only connect and capture AFTER things are running.

How do we set SystemView to catch startup code?

thank you! russ

[brian-amos-embedded]

Hi Russ,

It can be tricky to get System View to capture data during startup, try the following:

1. Open both Ozone and System View
2. In Ozone, connect to the target device and stop at main
3. In System View, start recording
4. In Ozone, start execution

[relayman357]

Hi Brian,

Thank you. I followed your instructions but when I click the play button back in Ozone I get "The target stopped in HardFault exception state." No data gets recorded in SystemView but the "Recorder starting 1%" popup does go away.

If I follow your instructions except I skip 3., the program executes fine in Ozone.

There is some conflict that I can't identify when using both Ozone & SystemView together at startup. Per SEGGER and Jim's suggestion I added Project.SetRTT(0); to the .jdebug file but still no dice.

I appreciate your help, thanks.

russ

p.s. I can connect with SystemView fine if I cut the program loose to run first (play button instead of trying to step through in Ozone). But, that means I capture nothing at startup.

[relayman357]

This seems to be where the crash happens (from Ozone)

[relayman357]

Another symptom, not sure if related - I never see the Printf messages in the Ozone Terminal window. I just tested again with the Chapter 7 failed build and it fails (as expected), but no message to Terminal. I do see messages in the SystemView terminal window when it is running.

From my Chapter_7.jdebug file:

void OnProjectLoad (void) {
  //
  // Dialog-generated settings
  //
  Project.SetTraceSource ("SWO");
  Project.SetDevice ("STM32F767ZI");
  Project.SetHostIF ("USB", "");
  Project.SetTargetIF ("JTAG");
  Project.SetTIFSpeed ("50 MHz");
  Project.AddSvdFile ("C:\ST\STM32CubeIDE_1.12.1\STM32CubeIDE\plugins\com.st.stm32cube.ide.mcu.productdb.debug_2.0.500.202302211408\resources\cmsis\STMicroelectronics_CMSIS_SVD\STM32F767.svd");
  Project.SetOSPlugin("FreeRTOSPlugin_CM7");

  Project.SetRTT(0);
  //
  // User settings
  //
  File.Open ("C:\projects\packBookRTOS\Chapter_7\FailedStartupBuild\Chapter_7_FailedStartupBuild.elf");
}