[SOLVED] Questions about jtrace and ozone

tuandt2 · Nov 22nd 2022, 4:24am

Hello everyone,

Currently, I'm using JTrace and Ozone for my project to measure execution time automation base on jlinkscript, I have some question relate to it, please help

1. How can I start or stop tracing application in C code?

2. How to measure execution time of functions and sub-functions in application (bare metal application)?
For Ex : I have a function like this,

C Source Code

void FunctionC()
{
..........
}
void FunctionB()
{
FunctionC();
}
void FunctionA()
{
FunctionB();
}
int main (void)
{
FunctionA();
return 0;
}

Display All

I can export log of execution time for functions A, B, C. But how can I create a log with call graph in jlinkscrip? like below
----FunctionA 10ns
-------- FunctionB 5ns
------------FunctionC 2ns

3. How can I open full call graph of functions?

Thank you,
Tuan

SEGGER - Nino · Nov 29th 2022, 9:52am

Hello Tuan,

Thank you for your inquiry.
Could you provide your S/N of the J-Trace for reference?

Regarding 1: You don't. Why would you need to do that? Is something not working?

2: If available with timestamps. Which target device are you tracing exactly?

tuandt2 wrote:

I can export log of execution time for functions A, B, C. But how can I create a log with call graph in jlinkscrip? like below

JLinkScript would be the wrong place as the high level analysis is done in Ozone. What is your use case here?

3: Not sure what you mean. But we have the timeline window which will show you the complete recorded call stack over time.

To get used to J-Trace and Ozone we recommend our trace tutorial so you can try out all features in a already working and set up environment:
segger.com/products/developmen…ogy/ozone-trace-tutorial/

Best regards,
Nino

tuandt2 · Dec 9th 2022, 8:13am

Hello,

Thank you for your feedback, I found the solution for our project with items in previous post.

And btw, I have another question about ozone, please give me a idea. I'm trying to debug a i.MX8QM chip and I saw in setup of Ozone v3.28 supported for IMX8QM, so I did some setup based on setup wizard such as Device, Core, Elf file. After finishing configuration, I select "Download and reset Program" but only debug symbol in elf file is loaded to Ozone, and binary code didn't program to memory of chip. And I added a function to load binary file in TargetDownload handler.

C Source Code

void TargetDownload (void) {
// Clear memory that contain the binary
Target.FillMemory(0x88000000, 1048576, 0);
// Load bin file to memory at address 0x88000000 (0x88000000 is run address and get from map file)
Target.LoadMemory("D:/CORE0.elf.bin", 0x88000000);
}

So, select the elf file at configuration time doesn't include program the memory, doesn't it? But, it quite strange, I used the example board in Jtrace package, with the same step to setup, when I click "Download and reset Program", it downloaded the binary file to memory . Please give me a explain about this, I read the document but haven't found the solution yet.

Thank you

SEGGER - Nino · Dec 9th 2022, 1:28pm

Hello,

This is a new question that is unrelated to the posts topic.
Please open a new thread for a new question.

This thread will be closed now.

Best regards,
Nino

C Source Code

C Source Code

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