MSP430F5529: MQTT Memory & Code Footprint

Brian Angiel

Part Number: MSP430F5529

Hi team,

I can see from the processor wiki that the memory and code footprint of MQTT on MSP430F5529 is 7kB RAM and 44kB Flash. Could you please help me understand why so much memory is needed? Thanks!

Regards,

Brian Angiel

over 8 years ago

0 Cameron LaFollette over 8 years ago

TI__Genius 14875 points

Hi Brian,
Can you post a link to the wiki page you are referring to?

0 Brian Angiel over 8 years ago in reply to Cameron LaFollette

TI__Expert 4300 points

Hi Cameron,

Here you go! Link

Memory and code footprint of MQTT client example on MSP430F5529-launchpad

Memory footprint: Uses 7.054 KB of RAM.
Code footprint: Uses 44.4 KB of Flash.

Thanks,

Brian Angiel

0 Austin Tanner over 8 years ago in reply to Brian Angiel

TI__Expert 8255 points

Hi Brian,

The reason you are seeing this memory footprint is because the example includes:

The SL Host Driver
The application code
The mqtt library
This example also uses FreeRTOS

Does that help answer your question?

0 Brian Angiel over 8 years ago in reply to Austin Tanner

TI__Expert 4300 points

Yes, and to add to this, are any of these inclusions expendable, in that they can be excluded to reduce the footprint? I guess my question is, in a real-world, typical application, what might the code footprint look like for MQTT on MSP430F5529?

Thanks,
Brian Angiel

0 Austin Tanner over 8 years ago in reply to Brian Angiel

TI__Expert 8255 points

Hi Brian,

This is a question that depends specifically on your individual use case, which I'm afraid I cannot answer. For instance, you can eliminate the use of an RTOS as outlined in the below post. Or, you can manually remove features from the host driver that you deem not essential functions.

0 Brian Angiel over 8 years ago in reply to Austin Tanner

TI__Expert 4300 points

Austin, this is very helpful, thank you.

Brian

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MSP430F5529: MQTT Memory & Code Footprint

Memory and code footprint of MQTT client example on MSP430F5529-launchpad