Linker Command file in TMS320f28335

Rakesh Dara

How to write instructions in linker command file??

How to access the variable(variable declared in command file or .c) in linker command file??

Ex:

if(x==1)

{

copysection : > FLASHA

}

else

{

copysection : > FLASHB

}

We want to perform this action in command file.But getting the error.So what is the solution to perform this action??

0 Gautam Iyer over 9 years ago

Guru 192875 points

Hi Rakesh,

You can assign variable (or) const to data section using the below option:-

#pragma DATA_SECTION(Example_variable, "Example_sectionName");
Uint32 Example_variable;

And then make sure to assign memory location to Example_sectionName in your linker command file as shown below:-

PAGE1:

EXAMPLE_MEMLOCATION : origin = 0x000400, length = 0x2 //include this in memory section

Example_sectionName : > EXAMPLE_MEMLOCATION PAGE = 1 //include this in SECTIONS

Regards,

Gautam

0 Rakesh Dara over 9 years ago in reply to Gautam Iyer

Hi Gautam,

If i am giving #defines instead variables not working.

0 Gautam Iyer over 9 years ago in reply to Rakesh Dara

Guru 192875 points

You mean to say, you're defining <#define var> instead of <datatype var>?

0 Rakesh Dara over 9 years ago in reply to Gautam Iyer

Hi Gautam,

I am declaring variable in header file like

#define Temp_var 1

I am using above variable in Linker Command File

#if Temp_var

--------

---------

#endif

I am getting an error Temp_Var is undefined.

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