Problems with __attribute__ directive

[stefanococo]

Hi,

I just ported an mbed project into VisualGDB but I’m experiencing problem using expression like this:

const uint8_t Eeprom_area0[PAGE_SIZE] __attribute__((at(PAGE0_BASE_ADDRESS),used))={ [0 … (PAGE_SIZE-1)] = 0xFF };

This worked well into mbed online compiler and Keil, but here in VisualGBD the compiler says at this line:

warning :  ‘at’ attribute directive ignored [-Wattributes]

error :  expected identifier before numeric constant

error :  expected ‘{‘ before ‘=’ token

error :  no match for ‘operator=’ (operand types are ‘<lambda()>’ and ‘int’)

 

I’m using the latest version of VisualGDB (all extensions & toolchains updated) into VisualStudio2017.

Thanks in advance for your help.

Stefano

[support]

Hi,

This is a known issue. The GCC compiler used by VisualGDB is not 100% compatible with the Keil compiler and uses a completely different syntax for placing parts of your program at fixed addresses.

We have a detailed tutorial explaining the entire process here: https://visualgdb.com/tutorials/arm/bootloader/

It is also worth mentioning that VisualGDB can be configured to use the Keil compiler instead of GCC. Please follow this tutorial for details:  https://visualgdb.com/tutorials/arm/keil/

[Author]

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