Wireless MCUのトピックRe: Memory consumption of Flash

Memory consumption of Flash

kuldeep_chaturv — Mon, 01 Jul 2019 06:04:29 GMT

Hi,

In our project we are using the HID demo project as a baseline for Sw creation.

In it, after compilation, we are getting following memory consumption message after compilation(in MCU expresso).

Memory region Used Size Region Size %age Used

m_interrupts: 192 B 1 KB 18.75%

m_flash_config: 16 B 16 B 100.00%

m_text: 199648 B 251494 B 79.38%

NVM_region: 8191 B 8191 B 100.00%

m_data_2: 2240 B 16 KB 13.67%

m_data: 28744 B 48 KB 58.48%

seems like the Flash memory for application code, is already ~80% consumed? Is it true?

So is it expected that customer to manage their application in remaining 10% or something?(remaining 10% for future use)

And what is design level recommendation from NXP about the maximum consumption for all the memory units, is there a place to see it?

Br,

Kuldeep

Re: Memory consumption of Flash

stephanie_m — Tue, 02 Jul 2019 16:56:02 GMT

Hello,

You can check in the release notes of the Bluetooth LE stack the different footprints for several examples.

The document it's called Bluetooth Low Energy Release Notes.pdf and it's available on the SDK documentation.

Regards,

Estephania

Re: Memory consumption of Flash

kuldeep_chaturv — Tue, 02 Jul 2019 19:03:16 GMT

Hi Estephania,

I understand that you are following the process.

but i would be extremely disappointed if i realised 80% is used already by existing app/stack or whatever and very little room for the customer app.

I would certainly need a way around.

Br,

Kuldeep

Re: Memory consumption of Flash

stephanie_m — Wed, 03 Jul 2019 01:01:11 GMT

Hello,

You can check the 3.4 Host Stack libraries and API availability chapter of the Bluetooth Low Energy Application Developer's Guide for some recommendations and options we provide for some code optimizations regarding the usage of the libraries, also you can remove some of the elements and options you won't use in your applications that are currently in the example.

Hope that helps.

Regards,

Estephania