沈阳理工大学课程设计

Pulse[i]=-1; break; case 2: Pulse[i]=1; break; case 3: Pulse[i]=3; break; } } //调用汇编函数 qpsk qpsk();

for(i=0;i

2.psk_asm.asm

.title\ .global _qpsk ;.global _y ;C.global _Pulse .global _PskSignal .mmregs .text _qpsk:

rsbx CPL stm #8-1,AR2 stm #_y, AR4

定义为全局变量，提供给C调用程序变量

;C程序变量 ;C程序变量

;循环变量 256/32=8 9

沈阳理工大学课程设计

stm #_Pulse, AR3 stm #_PskSignal, AR5

loop:

ld *AR3, A

bc phase0, AEQ ;若为0状态信号，则相移0 sub #1, A

addm #4, AR4 bc phase1, AEQ ;若为1状态信号，则相移pi/2

sub #1, A addm #8, AR4

bc phase2, AEQ ;若为2状态信号，则相移pi sub #1, A addm #12, AR4

bc phase3, AEQ ;若为3状态信号，则相移3*pi/2 pskend:

addm #32, AR3

banz loop, *AR2- ret phase0:

rpt #32-1

mvdd *AR4+, *AR5+ b pskend phase1:

rpt #32-1 mvdd *AR4+, *AR5+

addm #-36,AR4

b pskend phase2:

rpt #32-1

10

沈阳理工大学课程设计

mvdd *AR4+, *AR5+

addm #-40,AR4 b pskend phase3:

rpt #32-1

mvdd *AR4+, *AR5+ addm #-44, AR4 b pskend .end

3.Qpsk.cmd

-c -l rts.lib -l c54math.lib -stack 0x200 -heap 0x200 MEMORY {

PAGE 0:

INT_PM_DRAM: origin = 0080h, length = 1000h PAGE 1:

INT_DM_1: origin = 1080h,

length = 01000h }

SECTIONS {

.text:{} > INT_PM_DRAM 1 1

PAGE 0

沈阳理工大学课程设计

.cinit:{} > INT_PM_DRAM PAGE 0 .switch:{} > INT_PM_DRAM PAGE 0 .data:{} > INT_DM_1 PAGE 1 .stack:{} > INT_DM_1 PAGE 1 .bss:{} > INT_DM_1 PAGE 1 .sysmem:{} > INT_DM_1 PAGE 1 .const:{} > INT_DM_1 PAGE 1

4 结果

仿真结果图

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