MSP430F5418A: What keyword be used instead of "data20" while migrating the firmware for MSP430F5418A from IAR C/C++ compiler to the CCS (GCC) compiler?

Kannan M

Part Number: MSP430F5418A

Hi,

We were trying to use __int20 to replace the __data20. But it is not recognized by CCS (GCC) compiler as well.

Please suggest if any specific mechanism to distinguish the 20bit large pointers from regular data pointers to use in GCC compiler.

Thanks.

Best Regards,

Kannan M

over 2 years ago

0 David Schultz over 2 years ago

Guru 22965 points

What are you trying to do?

There are two ways to address memory above 0x10000. The first is to tell the compiler to use a large memory model with the -mlarge compiler switch. The other is to use the __data20_xxxx intrinsics.

0 Amruta Deole over 2 years ago

TI__Intellectual 2065 points

Hi Kannan,

There is not a 1:1 equivalent for __data20 in CCS, but you can set the behavior using the memory model options. Section 6.1 of the MSP430 Compiler User's Guide has more information on this. Section 6.7.1 of the User's Guide also has information on intrinsics the compiler supports that can also possibly help.

Best,
Amruta

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MSP430F5418A: What keyword be used instead of "data20" while migrating the firmware for MSP430F5418A from IAR C/C++ compiler to the CCS (GCC) compiler?