S32 Design Studio中的主题 Re: How to make function run in RAM

How to make function run in RAM

yuehedeng — Thu, 23 Mar 2017 06:24:35 GMT

My platform is MPC574x + S32DS.

My question is that how to copy a function into RAM and run after ECU start up. I search NXP community and found an example which may work in code warrior. But the S32 DS seems didn't support it.

Below is the function I want to run in RAM, but gets warnings during compiling.

Below is part of my ld file:

/**************** RAM function Section *******************/
.runInRam :
{
__RAMFUNC_START = .;
*(.runInRam)
*(.runInRam.*)
__RAMFUNC_END = .;
} > ramfunc_ram AT>Z4_APP_RAMFunc_text

Re: How to make function run in RAM

stanish — Thu, 23 Mar 2017 17:36:14 GMT

Hi,

The #pragma section you are using in the source code is available in CodeWarrior MPC5xxx compiler only.

S32 Design Studio for Power compiler is based on gcc and therefore these pragmas are ignored.

I'd suggest you to read this document:HOWTO: Run a routine from RAM in S32 Design Studio

Hope it helps.

Stan

Re: How to make function run in RAM

nxppower912935 — Thu, 23 Mar 2017 21:55:45 GMT

Hi Stan,

I would be interested in that document, however I'm unauthorized. Is that so or limited user circle?

Regards

Re: How to make function run in RAM

yuehedeng — Fri, 24 Mar 2017 00:47:35 GMT

Same to me when I try to open the link:

Unauthorized

This place or content does not exist or access to it is restricted. If you think this is a mistake, please contact your administrator or the person who directed you here.

Re: How to make function run in RAM

martin_kovar — Fri, 24 Mar 2017 06:39:42 GMT

Hello Guys,

I approved the article in internal community system. Could you please try to look once again and let me know, if you see the content?

Regards,

Martin

Re: How to make function run in RAM

yuehedeng — Fri, 24 Mar 2017 06:53:39 GMT

Yes， I can open the link and see the content now. Thanks very much.

I will try the solution shown in the page.