AWRL1432BOOST-BSD: Stack Usage in CCS

Charming Hsu

Prodigy 80 points

Part Number: AWRL1432BOOST-BSD

Tool/software:

Hello,

I'm confused about reading stack information from "Stack Usage" in CCS

1. In the BSD demo code, task stacks are defined as follows

CLI_TASK_STACK_SIZE (4 * 1024U)

DPC_TASK_STACK_SIZE (8912)

StackType_t is uint32_t → 4bytes

StackType_t gCliTskStack[CLI_TASK_STACK_SIZE] __attribute__((aligned(32))); → 4 * 1024 * 4 bytes

StackType_t gDpcTaskStack[DPC_TASK_STACK_SIZE] __attribute__((aligned(32))); → 8912 * 4 bytes

2. this website(https://software-dl.ti.com/ccs/esd/documents/ccs_stack_usage_view.html) says "The size values shown in the view are in bytes"

Why are these two tasks shown in yellow? DPC(2328). CLI(2152)

In addition, size of DPC is twice of CLI.

over 1 year ago

0 Zorah Ahmad over 1 year ago

TI__Expert 4250 points

Hello,

On the same webpage that you shared it states why the two bars are yellow

0 Charming Hsu over 1 year ago in reply to Zorah Ahmad

Prodigy 80 points

Hello,

Here's what I don't understand, the DPC stack size in the C code is 32K bytes and the CLI stack size is 16K bytes, but they only use a little over 2K bytes.

0 Zorah Ahmad over 1 year ago

TI__Expert 4250 points

Hello.

A larger stack was initialized at the start of the code. Not all of it was used during execution. The code has not been optimized to bring the initialization of the stack size down.

Thankyou,

Zorah

0 Charming Hsu over 1 year ago in reply to Zorah Ahmad

Prodigy 80 points

Hi Zorah,

Thanks for your reply!

I know the demo code does not optimize the stack size, so I want to get the stack information from "Stack Usage" and reduce the stack size to a reasonable value.

What I'm confused about is that DPC has a stack size of 32K, but a yellow warning appears when only 2K is used. Is there something wrong or am I misunderstanding something?

Regards

Charming

+1 Zorah Ahmad over 1 year ago in reply to Charming Hsu

TI__Expert 4250 points

I think it should be safe to reduce the size to a reasonable value, you can disregard the color and proceed. If you run into any errors you can reach out again

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AWRL1432BOOST-BSD: Stack Usage in CCS