LAUNCHXL-F28P65X: Support Required for Merging DriverLib SysConfig Project with Bitfield Project

Hi Sayali,

1. Make sure you are using only one .cmd file in your project (I assume that this is the case, but it is not clear from your question). Here is how to merge the 2 linker command files to create a single one.

Step 1  - Open both f28p65x_headers_nonBIOS_cpu1.cmd (Bitfield) and your DriverLib .cmd file in a text editor.

Identify these two specific blocks in both:

1. MEMORY { ... } : This defines the hardware boundaries (where Flash starts, where RAM ends).

2. SECTIONS { ... } : This tells the linker which parts of your code (like .text,.ebss,.stack) go into which memory regions.

Step 2: Merge the MEMORY Block

• Look for overlaps: Check if both files define FLASH,RAML0 , etc.
• The Rule: If both files define the same memory region (e.g., FLASH: origin 0x080000, length 0x00080000), keep only one definition.
• Add unique regions: If the Bitfield file defines a specific RAM block that the DriverLib file doesn't mention, add that unique block to your unified MEMORYsection.

MEMORY
{
    /* Common regions from both files */
    PAGE 0
    /* Keep the definition that is most complete/accurate for your chip */
    FLASH (RX) : origin 0x080000, length 0x00080000 
    RAML0 (RW) : origin 0x000000, length 0x000800
    
    /* Add a unique region found in only one file */
    RAMLS0 (RW) : origin 0x000A00, length 0x000400
    
    /* ... and so on */
}

Step 3: Merge the SECTIONS Block

1. Start with the DriverLib SECTIONS: DriverLib requires specific sections for its library functions (usually .text,.const,.ebss).
2. Append the Bitfield SECTIONS: Add the sections required by your bitfield code (e.g., specific interrupt vectors or custom data sections).
3. Watch for Conflicts: If both files try to assign .text to different places, you must choose one (usually the one that corresponds to your primary code storage, like Flash).

SECTIONS
{
    /* 1. Standard DriverLib/Compiler sections */
    .text          : > FLASH, PAGE = 0
    .const         : > FLASH, PAGE = 0
    .ebss          : > RAML0, PAGE = 1  /* Where global variables live */
    
    /* 2. Bitfield-specific sections (e.g., Interrupt Vectors) */
    /* Ensure these don't overlap with the .text section above */
    InterruptVectTable : > FLASH, PAGE = 0
    
    /* 3. Stack and Heap (Ensure these are large enough for both) */
    .stack         : > RAML0, PAGE = 1
}

Here, check your .text size: Ensure your Flash/RAM section is large enough for both sets of code.

You have included both the device_support and driverlib folders in your compiler's Include Options - this is correct.

Can you try creating a single linker command file? If you are already using a single .cmd file can you share it?

Thanks,
Ira