Compilation error "#159 expression must be an integral constant expression"

vinoth s1

Other Parts Discussed in Thread: MSP430F2410

I am porting IAR Embedded workbench project source code to Code composer studio.5.5.0
The source code is building fine with IAR Embedded workbench IDE.
MCU is msp430f2410.

I am getting below Build errors and warning during compilation on the same line.

===================

Errors:

#159 expression must be an integral constant expression params.c line 51

#66 expected a ";" params.c line 51

Warnings:

#78-D this declaration has no storage class or type specifier params.c line 51

===================

I need to know how do i make this IAR working code compatible with CCS.

Please suggest me some solution.

over 9 years ago

vinoth s1 over 9 years ago

Intellectual 660 points

Adding source code in params.c from line 49 to line 51

=======================================

#pragma segment="BSLSKEY"
#define BSLSKEY _Pragma("location=\"BSLSKEY\"")
BSLSKEY __root const WORD bslkey = 0xAA55;

=======================================

vinoth s1 over 9 years ago in reply to vinoth s1

Intellectual 660 points

To give more information , In IAR

Extended keyword "__root" ensures bslkey is initialized even though unused by code.

Need to write a compatible code for the above in CCS..

Thanks in advance

George Mock over 9 years ago in reply to vinoth s1

TI__Guru**** 232670 points

I encourage you to read the section titled Pragma Directives in the MSP430 compiler manual.

In this particular case I think you need ...

#pragma RETAIN(bslkey)
#pragma DATA_SECTION(bslkey, "BSKSKEY")
const WORD bslkey = 0xAA55;

In your linker command file you can place the section BSKSKEY as needed. An alternative to pragma DATA_SECTION is pragma LOCATION. But LOCATION requires you know the address at compile time.

Thanks and regards,

-George

vinoth s1 over 9 years ago in reply to George Mock

Intellectual 660 points

Thanks for the comment..

>In your linker command file you can place the section BSKSKEY as needed.

How i can do this in linker file? Can you provide me a example?

George Mock over 9 years ago in reply to vinoth s1

TI__Guru**** 232670 points

When you start a new project in CCS a linker command file is provided for you. You are probably using lnk_msp430f2410.cmd. An introduction to linker command files like that is in this wiki article.

Thanks and regards,

-George

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Compilation error "#159 expression must be an integral constant expression"