MSP430FR5994: Can I combine 4kb LEA RAM with SRAM into a single 8kb block of RAM?

Hi,
By default, LEA shares his 4KB (excluding stack and command memory) of memory with others like DMA and CPU.
Let say,
RAM : origin = 0x1C00, length = 0x2000 - LEASTACK_SIZE
would be more correct. Otherwise you need to disable LEA explicitly to allocate full memory.
Regards,
Alexey

Hi Alexey,

I have also removed the LEA STACK memory allocation, by removing the lines below.

LEASTACK : origin = 0x3C00 - LEASTACK_SIZE, length = LEASTACK_SIZE

.leaRAM : {} > LEARAM /* LEA RAM
.leaStack : {} > LEASTACK (HIGH) /* LEA STACK

Is this what you mean by "disable LEA explicitly"? Does the LEA stack automatically get initialized somewhere on boot?

Thanks,
Ryan

These definitions are just for a compiler to manage names and address ranges. They do not change anything in a real hardware. The LEASTACK region holds internal data for LEA usage only, including command attributes. Writing anything to this region without disabling LEA module can put system to unpredicted behavior.

Regards,
Alexey

Ok, so I guess the question now is how can I disable the LEA module? (if possible)

Quick follow up.

I can remove all references in the linker file to LEA and do not get any warnings or errors during compilation. I believe this would indicate that nothing is being placed in the .leaRAM, or .leaStack memory definitions?

The last thing I want is the LEA to inadvertently overwrite data on the system stack if I don't reserve a region for the LEA stack. Just looking for a confirmation on the behaviour of the LEA if not used in our application.