tmp6010_srt.s

Mplab C30编译器

                                 ;place "wreg_init" in an "extern" declaration
                                 ;in the C file.

        .global _main            ;The label for the first line of code. If the
                                 ;assembler encounters "_main", it invokes the
                                 ;start-up code that initializes data sections

        .global __T1Interrupt    ;Declare Timer 1 ISR name global



;..............................................................................
;Constants stored in Program space
;..............................................................................

        .section .myconstbuffer, code
        .palign 2                ;Align next word stored in Program space to an
                                 ;address that is a multiple of 2
ps_coeff:
        .hword   0x0002, 0x0003, 0x0005, 0x000A




;..............................................................................
;Uninitialized variables in X-space in data memory
;..............................................................................

         .section .xbss, bss, xmemory
x_input: .space 2*SAMPLES        ;Allocating space (in bytes) to variable.




;..............................................................................
;Initialized variables in X-space in data memory
;..............................................................................

         .section .xdata, data, xmemory
         .align 32               ;Aligns the next word to be stored (here x_in)
                                 ;to a multiple of 32
x_in:    .hword 0x1111, 0x2222, 0x3333, 0x4444, 0x5555




;..............................................................................
;Uninitialized variables in Y-space in data memory
;..............................................................................

          .section .ybss, bss, ymemory
y_input:  .space 2*SAMPLES




;..............................................................................
;Initialized variables in Y-space in data memory
;..............................................................................

          .section .ydata, data, ymemory
y_in:     .hword 0x1234, 0x5678, 0x9abc, 0xdef0, 0xabab




;..............................................................................
;Uninitialized variables in Near data memory (Lower 8Kb of RAM)
;..............................................................................

          .section .nbss, bss, near
var1:     .space 2               ;Example of allocating 1 word of space for
                                 ;variable "var1".




;..............................................................................
;Initialized variables in Near data memory (Lower 8Kb of RAM)
;..............................................................................

        .section .ndata, data, near
var2:   .hword 0x1234, 0x5678, 0x9abc, 0xdef0, 0xabab





;..............................................................................
;Code Section in Program Memory
;..............................................................................

.text                             ;Start of Code section
_main:
        CALL _wreg_init           ;Call _wreg_init subroutine
                                  ;Optionally use RCALL instead of CALL




        ;<<insert more user code here>>





done:
        BRA     done              ;Place holder for last line of executed code



;..............................................................................
;Subroutine: Initialization of W registers to 0x0000
;..............................................................................

_wreg_init:
        CLR W0
        MOV W0, W14
        REPEAT #12
        MOV W0, [++W14]
        CLR W14
        RETURN



;..............................................................................
;Timer 1 Interrupt Service Routine
;Example context save/restore in the ISR performed using PUSH.D/POP.D
;instruction. The instruction pushes two words W4 and W5 on to the stack on
;entry into ISR and pops the two words back into W4 and W5 on exit from the ISR
;..............................................................................

__T1Interrupt:
        PUSH.D W4                  ;Save context using double-word PUSH

        ;<<insert user code here>>

        BCLR IFS0, #T1IF           ;Clear the Timer1 Interrupt flag Status
                                   ;bit.
        POP.D W4                   ;Retrieve context POP-ping from Stack
        RETFIE                     ;Return from Interrupt Service routine



;--------End of All Code Sections ---------------------------------------------

.end                               ;End of program code in this file