TMS320F28388D: How to find the memory address of a global structure member

Tool/software:

Hi,

There is a global structure defined in cpu1 project and our use case is to know the memory address of a member of the structure from cpu2, access those members and read the values stored in them.

The structure declaration is given below and the member in question is RawAdcData.w[0] which in turn points to stRawAdcData.RecRPhaseLegBCur:

typedef struct {
    float RecRPhaseLegBCur;                 
    float BatLegAVolt;                      
    /**snipped**/
} stRawAdcData;

#define RAW_ADC_SIZE    sizeof( stRawAdcData ) / sizeof( float )

typedef union
{
    stRawAdcData    st;
    float           w[ RAW_ADC_SIZE ];
} uRawAdcData;

uRawAdcData RawAdcData;

As per the linker file, this variable is stored in Global Shared RAM (.bss).

I had used below information to obtain from the out file: Get data from .out-file - Code Composer Studio forum - Code Composer Studio︎ - TI E2E support forums

But I could not locate this member variable in the map file.

Here's what I did:

Obtained from the output of ofd2000:

command used: "C:/ti/ccs1270/ccs/tools/compiler/ti-cgt-c2000_22.6.1.LTS/bin/ofd2000.exe" --obj_display=none,sections -v cpu1.out

    <8> ".bss"
       Load Address:        0x0000f800  Run Address:        0x0000f800
       Size:                0x1a8e      Alignment:          2         
       Loaded Onto Device:  Yes         Address Unit Size:  16 bits   
       File Offset:         0x1034      # Relocs:           0         
       Section Type:        SHT_NOBITS  ELF sh_flags:       0x3       
       ELF sh_flag:         SHF_WRITE   ELF sh_flag:        SHF_ALLOC 
       TI ext_flags:        0x0         (null)              (null) 

sect_file_ptr = 0x1034
sect_base = 0x0000f800

Looked into the output of nm2000 and could not get the whereabouts of member variable of RawAdcData. Below is what I got:

command used: "C:/ti/ccs1270/ccs/tools/compiler/ti-cgt-c2000_22.6.1.LTS/bin/nm2000.exe" -l cpu1.out

[5234]  |0x00011140|304|GLOB |OBJT |HIDN |8     |RawAdcData

There is nothing about ".w[0]" member of union or RecRPhaseLegBCur

Please let me know if I missed anything and if you need additional information.

Thanks,

Rohit