将标签分配给MSP430组件中的固定内存位置

Question

I have been trying but could not figure out how to assign a label to a fixed memory location in assembly programming of MSP430. I want to create two pointers (eg, xPtr and yPtr) which point to fixed memory locations in MSP430 address space. Then using the absolute mode, I want to perform instructions (eg, Mov.b &xPtr, &yPtr).

Answer 1

As shown in sections 4.8.4 and 5.10 of the MSP430 assembler manual (SLAU131) , you can use the .set or .equ directives to assign a value to a symbol:

xPtr    .set 1234h
yPtr    .set 5678h

        MOV.B &xPtr, &yPtr