Reducing Sys/bios code space

Marc Bunyard

Other Parts Discussed in Thread: MSP430F5310, SYSBIOS

I am working with SYS/BIOS on an MSP430F5310, and would like to reduce the amount of code space used by SYS/BIOS. I noticed there is a portion of the code labeled .const:xdc_runtime_Text_charTab__A. Is this a character set? Can it be omitted from the build? I am only including HWI, and semaphores.

over 13 years ago

0 Alan DeMars over 13 years ago

TI__Mastermind 30830 points

Marc,

The example config file attached shows a number of configuration settings that can be adjusted to reduce footprint size.

To specifically reduce the amount of space taken up by strings pay attention to the Text.isLoaded and Defaults.common$.namedModule settings.

Alan

5857.task.cfg

0 MarkGrosen over 13 years ago in reply to Alan DeMars

TI__Expert 4125 points

Also see Appendix D of the SYS/BIOS User's Guide which covers techniques like Alan mentions earlier:

http://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/bios/sysbios/6_33_05_46/exports/bios_6_33_05_46/docs/Bios_User_Guide.pdf

For some MSP430 specific tips, see http://processors.wiki.ti.com/index.php/SYS/BIOS_for_the_MSP430

Mark

0 Marc Bunyard over 13 years ago in reply to Alan DeMars

Intellectual 535 points

Thank you. The appendix D reminder is a great one. This quick support has been extremely helpful.

0 MarkGrosen over 13 years ago in reply to Marc Bunyard

TI__Expert 4125 points

Marc,

What's your goal for FLASH and RAM space allocated to SYS/BIOS? Are you building a "static" (no dynamic memory allocation or object creation) or "dynamic"?

Mark

0 Marc Bunyard over 13 years ago in reply to MarkGrosen

Intellectual 535 points

Sorry for the late follow up. Right now, I'm just trying to get the application to fit with SYS/BIOS. I don't know how much space the app is going to take when completed. Given updates etc., I would like to have ~ 2K ROM & 100 bytes RAM left when everything is in. I'm working with as few OS functions as I can to make sure things fit. Given more time I would like to use more OS features. Currently, I have reduced SYS/BIOS so that I have 10KROM and 512+ RAM.

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Reducing Sys/bios code space