周期梯形波編譯程序

A. 用定時器編寫占空比50％周期2s的梯形圖方波程序

X0 T1 K10
II--------I/I---------------------------------------(T0) 1秒

T0 K10
II--------I------------------------------------------(T1) 1秒
I
I------------------------------------------(Y0)
X0為選擇開關

B. 梯形波 程序代碼

Fs=100;%采樣頻率
x=0:1/Fs:100;
A=10;%幅度
T=10;%周期
m=8;%梯形高度
xx=2*x/T;
y=A*((xx-floor(xx)).*((mod(floor(xx),2)==0)-(mod(floor(xx),2)==1))+(mod(floor(xx),2)==1));
y=y+(m-y).*(y>m);
plot(x,y)

C. 微機課設：用匯編語言編寫一個信號發生器，要求產生正弦波、梯形波、階梯波、方波

IOY0 EQU 0D400H ;片選IOY0埠始地址
IOY1 EQU 0D440H ;片選IOY1埠始地址
IOY2 EQU 0D480H ;片選IOY2埠始地址
IOY3 EQU 0D4C0H ;片選IOY3埠始地址

;********************************************

ADC0809 EQU IOY0+00H ;ADC0809埠地址
PA55 EQU IOY1+00H ;8255的A口地址
PB55 EQU IOY1+04H ;8255的B口地址
PC55 EQU IOY1+08H ;8255的C口地址
PCTL EQU IOY1+0CH ;8255的控制寄存器地址
DAC0832 EQU IOY2+00H ;DAC0832埠地址

TIMER0 EQU IOY3+00H ;8254計數器0埠地址
TIMER1 EQU IOY3+04H ;8254計數器1埠地址
TIMER2 EQU IOY3+08H ;8254計數器2埠地址
TCTL EQU IOY3+0CH ;8254控制寄存器埠地址

STACK1 SEGMENT STACK
DW 256 DUP(?)
STACK1 ENDS

DATA SEGMENT
STR1 DB 'Please input password:',0AH,0DH,'$'
STR2 DB 'The password is not right !!!Please try again!!!',0AH,0DH,'$'
STR3 DB 'Welcome to the signal creat machine',0AH,0DH,'Loading ADC0809.....',0AH,0DH,'$'
STR4 DB 'The passward is right',0AH,0DH,'$'
DTABLE DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,77H,7CH,39H,5EH,79H,71H ;7段數碼管的段位值

STABLE DB 80H,8CH,98H,0A5H,0B0H,0BCH,0C7H,0D1H,0DAH,0E2H,0EAH,0F0H,0F6H,0FAH,0FDH,0FFH,0FFH,0FDH,0FAH,0F6H,0F0H,0EAH,0E2H,0DAH,0D1H,0C7H,0BCH,0B0H,0A5H,98H,8CH,80H,7FH,73H,67H,5AH,4FH,43H,38H,2EH,25H,1DH,15H,0FH,09H,05H,02H,00H,00H,02H,05H,09H,0FH,15H,1DH,25H,2EH,38H,43H,4FH,5AH,67H,73H,7FH

PASSWORD DB 41H,42H,43H,44H ;預設密碼
GAO DB 1 DUP (?) ;預留顯示十位
DIW DB 1 DUP (?) ;預留顯示個位
PW DB 4 DUP (?) ;密碼預留
YU DB 20 DUP (?) ;預留20個空間存放數據

DATA ENDS

CODE SEGMENT
ASSUME CS:CODE,DS:DATA

START: MOV AX,DATA
MOV DS,AX

CALL CLK ;ADC0809 CLK輸入

MOV DX,PCTL ;初始化8255工作方式
MOV AL,88H ;1000 1000方式0，A口，B口輸出，C口高四位輸入
OUT DX,AL ;

L0: CALL DIS
MOV DX,OFFSET STR1 ;顯示提示信息
MOV AH,9
INT 21H

CALL DIS
;*******識別密碼***********
L1: MOV CX,4
MOV SI,OFFSET PW
L: MOV AH,01H ;輸入密碼
INT 21H
MOV [SI],AL
INC SI
CMP AL,45H ;檢測有無E
JZ E
LOOP L

MOV CX,4
MOV SI,OFFSET PASSWORD;取PASSWORD的偏移地址
MOV DI,OFFSET PW
TE: MOV AL,[DI]
CMP AL,[SI]
JNE TE1
INC DI
INC SI
LOOP TE

JMP Q
TE1: MOV DX,OFFSET STR2 ;顯示密碼錯誤
MOV AH,9D
INT 21H
JMP L0

E: JMP QUIT

;*****啟動ADC0809的INO***********
Q: MOV DX,OFFSET STR4
MOV AH,09H
INT 21H
MOV DX, OFFSET STR3 ;顯示提示信息
MOV AH,09H
INT 21H

; MOV AH,00H ;將AH清零用於加法
; MOV CX,20D
L2: MOV DX,ADC0809 ;啟動0809的IN0
OUT DX,AL
L3: CALL DALLY
;*****讀取EOC的值****************
MOV DX,PC55
IN AL,DX ;讀C口的值
TEST AL,80H ;檢測出C7的值是否為1
JZ L3 ;C7不為1則跳到L3
;*****讀取0809IN0的值*************
CALL SIN
JMP L0

MOV DX,ADC0809 ;讀取0809IN0的值
IN AL,DX

; ADD AH,BL
; LOOP L2 ;求20次數據的和
;

; MOV AL,AH
; MOV BL,20D
; DIV BL ;求採集數據20次的平均值(修改)
; MOV BH,AL

MOV BL,AL
MOV CL,04H
SHR AL,CL ;取出十位
MOV GAO,AL ;存十位的值
MOV AL,BL
AND AL,0FH ;取出個位
MOV DIW,AL ;存個位的值

CALL DIS ;調用數碼管顯示函數
CALL DIS

MOV AL,BL
CMP AL,15H
JL L4

MOV AL,BL
CMP AL,80H
JL L5

MOV AL,BL
CMP AL,0A0H
JL L6

MOV AL,BL
CMP AL,0C0H
JL L7

CALL FANG1K

JMP L0

L4: CALL JIETI
JMP L0
L5: CALL SIN
JMP L0
L6: CALL TIXING
JMP L0
L7: CALL FANG500
JMP L0

QUIT: MOV AX,4C00H ;結束程序退出
INT 21H

DIS PROC NEAR ;顯示子函數
PUSH AX
PUSH DX
PUSH BX

MOV AL,0EFH ;選通位LED 1110 1111
MOV DX,PA55
OUT DX,AL
MOV SI,OFFSET GAO ;取個位地址
MOV AL,[SI] ;取個位數據
MOV BX,OFFSET DTABLE
AND AX,00FFH
ADD BX,AX
MOV AL,[BX]
MOV DX,PB55
OUT DX,AL

MOV AL,0DFH ;選通個位LED 1101 1111
MOV DX,PA55
OUT DX,AL
MOV SI,OFFSET DIW ;取個位地址
MOV AL,[SI] ;取個位數據
MOV BX,OFFSET DTABLE
AND AX,00FFH
ADD BX,AX
MOV AL,[BX]
MOV DX,PB55
OUT DX,AL
POP BX
POP DX
POP AX
RET

DIS ENDP

CLK PROC NEAR ;方波CLK時鍾18.432K子程序
;****初始化8254計數器0工作在方式3，以十進制計數，初值為100*******
PUSH DX ;保護現場
PUSH AX ;保護現場
MOV DX,TCTL
MOV AL,17H ;0001 0111B
OUT DX,AL
MOV DX,TIMER0 ;裝初值100
MOV AL,100D
OUT DX,AL
POP AX ;恢復現場
POP DX ;恢復現場
RET
CLK ENDP

FANG1K PROC NEAR ;方波1KHz子程序
;***初始化8254計數器1工作在方式3，以十進制計數，初值為184******
PUSH DX ;保護現場
PUSH AX ;保護現場

MOV DX,TCTL
MOV AL,57H ;0101 0111B
OUT DX,AL
MOV DX,TIMER1
MOV AL,0B8H;184
OUT DX,AL

F: CALL DIS
MOV DL,0FFH ;判斷主鍵盤有無鍵按下
MOV AH,6
INT 21H
JZ F

POP AX ;恢復現場
POP DX ;恢復現場
RET
FANG1K ENDP

FANG500 PROC NEAR ;方波500Hz子程序
;***初始化8254計數器1工作在方式3，以十進制計數，初值為368******
PUSH DX ;保護現場
PUSH AX ;保護現場
MOV DX,TCTL
MOV AL,77H ;0111 0111B
OUT DX,AL

MOV DX,TIMER1
MOV AL,70H ;368D分高低位寫入
OUT DX,AL

MOV AL,01H
OUT DX,AL
F1: CALL DIS
MOV DL,0FFH ;判斷主鍵盤有無鍵按下
MOV AH,6
INT 21H
JZ F1
POP AX ;恢復現場
POP DX ;恢復現場
RET
FANG500 ENDP

JIETI PROC NEAR ;階梯波子程序
PUSH DX
PUSH AX
J0: MOV AL,00H;AL=0
J1: MOV DX,DAC0832;AL OUT
OUT DX,AL
ADD AL,33H
CALL DALLY1
CMP AL,0FFH
JNE J1

CALL DIS

MOV DL,0FFH ;判斷主鍵盤有無鍵按下
MOV AH,6
INT 21H
JZ J0
POP AX
POP DX
RET
JIETI ENDP

SIN PROC NEAR ;正弦波子程序
PUSH AX
PUSH BX
PUSH DX
S0: MOV BX,10H
S1: MOV SI,OFFSET STABLE
MOV CX,64D
S2: MOV AL,[SI]
MOV DX,DAC0832
OUT DX,AL
INC SI
LOOP S2
JMP S1
DEC BX
CMP BX,00H
JNE S1

CALL DIS

MOV DL,0FFH ;判斷主鍵盤有無鍵按下
MOV AH,6
INT 21H
JZ S0
POP DX
POP BX
POP AX
RET
SIN ENDP

TIXING PROC NEAR ;梯形波子程序
PUSH AX
PUSH DX
PUSH BX
T: MOV BX,10H
MOV AL,00H
MOV DX,DAC0832
OUT DX,AL
T0: MOV AL,33H

T1: MOV DX,DAC0832
OUT DX,AL
INC AL
CMP AL,0FFH
JNE T1

CALL DALLY1

T2: OUT DX,AL
DEC AL
CMP AL,33H
JNE T2

DEC BX

CMP BX,00H
JNE T0

CALL DIS

MOV DL,0FFH ;判斷主鍵盤有無鍵按下
MOV AH,6
INT 21H
JZ T
POP BX
POP DX
POP AX
RET

TIXING ENDP

;****延時子程序**********************

DALLY1 PROC NEAR
PUSH CX
PUSH AX
MOV CX,1000H
D1: MOV AX,0100H
D2: DEC AX
JNZ D2
LOOP D1
POP AX
POP CX
RET
DALLY1 ENDP

DALLY PROC NEAR
PUSH CX
PUSH AX
MOV CX,4000H
D3: MOV AX,0600H
D4: DEC AX
JNZ D4
LOOP D3
POP AX
POP CX
RET
DALLY ENDP

CODE ENDS
END START

D. 單片機與0832輸出梯形波，分別用c語言和匯編編寫

這個需要硬體支持。暫時不清楚你的電路。用偽代碼表示。

// C code
#define dotNum 128 //一個周期的采樣點數.
const int Keystone[dotNum] ={....}； //梯形波的采樣值

int main()
{
int i = 0;
int data;

for(;;)
{
i %= dotNum ;
data = Keystone[i];
i++;

DAC0832_convert(data);

}

return 0;
}

;asm code
org 0000H

main:

;點數

mov R1,#7FH

LOOP：

;獲取地址

MOV DPTR,#Keystone
move A,R1

MOVC A,@A+DPTR
mov R2,A
LCALL DAC0832 ;調用DAC0832函數
mov P.x,R2

DEC R1
DJNC R1,#LOOP
SJMP main

;梯形波的采樣值
Keystone： DB ..........

DAC0832：

......
RET

E. 請單片機高手幫忙寫一份DAC0832的梯形波C程序 51單片機

#include<absacc.h>
#define DAC0832 XBYTE[0x7FFF]
void delay() /*延時函數*/
{
unsigned int n,i;
for (n=0; n<100; n++);
for (i=0; i<300; i++);
}
void main()
{
unsigned char i,n=20;
while(1)
for(i=0;i<10;i++)
{

DAC0832=i*n;
delay();//延時1ms
}
}

程序模擬都有，望採納！

F. 請高端人士幫忙寫一下用DAC0832輸出鋸齒波，梯形波，三角波的程序，急求

#include<reg51.h>
/*位定義*/
sbit wr=P3^6;
sbit rd=P3^2;
sbit k0=P1^0;
sbit k1=P1^1;
sbit k2=P1^2;
sbit k3=P1^3;
sbit k4=P1^4;
unsigned char flag;//當flag為0、1、2、3、4時分別產生正弦波、方波、三角波、梯形波、鋸齒波
unsigned char const code sin_code[256]={
0x80,0x83,0x86,0x89,0x8c,0x8f,0x92,0x95,0x98,0x9c,0x9f,0xa2,
0xa5,0xa8,0xab,0xae,0xb0,0xb3,0xb6,0xb9,0xbc,0xbf,0xc1,0xc4,
0xc7,0xc9,0xcc,0xce,0xd1,0xd3,0xd5,0xd8,0xda,0xdc,0xde,0xe0,
0xe2,0xe4,0xe6,0xe8,0xea,0xec,0xed,0xef,0xf0,0xf2,0xf3,0xf4,
0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfc,0xfd,0xfe,0xfe,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfe,
0xfd,0xfc,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf3,0xf2,
0xf0,0xef,0xed,0xec,0xea,0xe8,0xe6,0xe4,0xe3,0xe1,0xde,0xdc,
0xda,0xd8,0xd6,0xd3,0xd1,0xce,0xcc,0xc9,0xc7,0xc4,0xc1,0xbf,
0xbc,0xb9,0xb6,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,
0x99,0x96,0x92,0x8f,0x8c,0x89,0x86,0x83,0x80,0x7d,0x79,0x76,
0x73,0x70,0x6d,0x6a,0x67,0x64,0x61,0x5e,0x5b,0x58,0x55,0x52,
0x4f,0x4c,0x49,0x46,0x43,0x41,0x3e,0x3b,0x39,0x36,0x33,0x31,
0x2e,0x2c,0x2a,0x27,0x25,0x23,0x21,0x1f,0x1d,0x1b,0x19,0x17,
0x15,0x14,0x12,0x10,0xf,0xd,0xc,0xb,0x9,0x8,0x7,0x6,0x5,0x4,
0x3,0x3,0x2,0x1,0x1,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x1,0x1,0x2,0x3,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xa,0xc,0xd,
0xe,0x10,0x12,0x13,0x15,0x17,0x18,0x1a,0x1c,0x1e,0x20,0x23,
0x25,0x27,0x29,0x2c,0x2e,0x30,0x33,0x35,0x38,0x3b,0x3d,0x40,
0x43,0x46,0x48,0x4b,0x4e,0x51,0x54,0x57,0x5a,0x5d,0x60,0x63,
0x66,0x69,0x6c,0x6f,0x73,0x76,0x79,0x7c
}; //用於生成正弦

unsigned char kscan() //鍵盤掃描函數
{
unsigned char kscannum,t;
P1=0xff;
t=P1;
if(~(t&0xff))
{
if(k0==0)
{
kscannum=1;
}
else if(k1==0)
{
kscannum=2;
}
else if(k2==0)
{
kscannum=3;
}
else if(k3==0)
{
kscannum=4;
}
else if(k4==0)
{
kscannum=5;
}
else
{
kscannum=0;
}
return kscannum;
}
}
void init_DA0832()//DA0832初始化
{
rd=0;
wr=0;
}
void fangbo()//產生方波函數
{
EA=1; //開總中斷
ET0=1; //計時器T0工作
TMOD=1;
TR0=1; //開啟T0
TH0=0xff; //裝入初值
TL0=0x83;
}
void sin()//產生正弦波函數
{
unsigned int i;

do{
P2=sin_code[i];
i=i+1;
}while(i<256);
}
void juchibo()//產生鋸齒波函數
{
P2=0x00;
do{
P2=P2+1;
}while(P2<=0xff);
}
void sanjiaobo()//產生三角波函數
{
P2=0x00;
do{
P2=P2+1;
}while(P2<0xff);
P2=0xff;
do{
P2=P2-1;
}while(P2>0x00);
P2=0x00;
}
void tixingbo()//產生梯形波函數
{
unsigned char i;
P2=0x00;
do{
P2=P2+1;
}while(P2<0xff);
P2=0xff;
for(i=255;i>0;i--)
{
P2=0xff;
}
do{
P2=P2-1;
}while(P2>0x00);
P2=0x00;
}
void timer0(void) interrupt 1//中斷函數
{
P2=~P2; //取反
TH0=0xff; //重新裝入初值
TL0=0x83;
TR0=1;
}
/*主函數*/
void main()
{
init_DA0832();//初始化
do
{
flag=kscan();
}while(!flag);//等待按鍵按下
while(1)
{
switch(flag)
{
case 1:
do{
flag=kscan();
sin();
}while(flag==1);//產生正弦波
break;
case 2:
fangbo();
do{
flag=kscan();
}while(flag==2);//產生方波
TR0=0;
break;
case 3:
do{
flag=kscan();
sanjiaobo();
}while(flag==3);//產生三角波
break;
case 4:
do{
flag=kscan();
tixingbo();
}while(flag==4);//產生梯形波
break;
case 5:
do{
flag=kscan();
juchibo();
}while(flag==5);//產生鋸齒波
break;
default:
flag=kscan();
break;
}
}
}

G. 急求用DAC介面電路，編寫產生負向鋸齒波、三角波、梯形波的程序

sbit wr=P3^6;
sbit rd=P3^2;
sbit k0=P1^0;
sbit k1=P1^1;
sbit k2=P1^2;
sbit k3=P1^3;
sbit k4=P1^4;
unsigned char flag;//當flag為0、1、2、3、4時分別產生正弦波、方波、三角波、梯形波、鋸齒波
unsigned char const code sin_code[256]={
0x80,0x83,0x86,0x89,0x8c,0x8f,0x92,0x95,0x98,0x9c,0x9f,0xa2,
0xa5,0xa8,0xab,0xae,0xb0,0xb3,0xb6,0xb9,0xbc,0xbf,0xc1,0xc4,
0xc7,0xc9,0xcc,0xce,0xd1,0xd3,0xd5,0xd8,0xda,0xdc,0xde,0xe0,
0xe2,0xe4,0xe6,0xe8,0xea,0xec,0xed,0xef,0xf0,0xf2,0xf3,0xf4,
0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfc,0xfd,0xfe,0xfe,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfe,
0xfd,0xfc,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf3,0xf2,
0xf0,0xef,0xed,0xec,0xea,0xe8,0xe6,0xe4,0xe3,0xe1,0xde,0xdc,
0xda,0xd8,0xd6,0xd3,0xd1,0xce,0xcc,0xc9,0xc7,0xc4,0xc1,0xbf,
0xbc,0xb9,0xb6,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,
0x99,0x96,0x92,0x8f,0x8c,0x89,0x86,0x83,0x80,0x7d,0x79,0x76,
0x73,0x70,0x6d,0x6a,0x67,0x64,0x61,0x5e,0x5b,0x58,0x55,0x52,
0x4f,0x4c,0x49,0x46,0x43,0x41,0x3e,0x3b,0x39,0x36,0x33,0x31,
0x2e,0x2c,0x2a,0x27,0x25,0x23,0x21,0x1f,0x1d,0x1b,0x19,0x17,
0x15,0x14,0x12,0x10,0xf,0xd,0xc,0xb,0x9,0x8,0x7,0x6,0x5,0x4,
0x3,0x3,0x2,0x1,0x1,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x1,0x1,0x2,0x3,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xa,0xc,0xd,
0xe,0x10,0x12,0x13,0x15,0x17,0x18,0x1a,0x1c,0x1e,0x20,0x23,
0x25,0x27,0x29,0x2c,0x2e,0x30,0x33,0x35,0x38,0x3b,0x3d,0x40,
0x43,0x46,0x48,0x4b,0x4e,0x51,0x54,0x57,0x5a,0x5d,0x60,0x63,
0x66,0x69,0x6c,0x6f,0x73,0x76,0x79,0x7c
}; //用於生成正弦

unsigned char kscan() //鍵盤掃描函數
{
unsigned char kscannum,t;
P1=0xff;
t=P1;
if(~(t&0xff))
{
if(k0==0)
{
kscannum=1;
}
else if(k1==0)
{
kscannum=2;
}
else if(k2==0)
{
kscannum=3;
}
else if(k3==0)
{
kscannum=4;
}
else if(k4==0)
{
kscannum=5;
}
else
{
kscannum=0;
}
return kscannum;
}
}
void init_DA0832()//DA0832初始化
{
rd=0;
wr=0;
}
void fangbo()//產生方波函數
{
EA=1; //開總中斷
ET0=1; //計時器T0工作
TMOD=1;
TR0=1; //開啟T0
TH0=0xff; //裝入初值
TL0=0x83;
}
void sin()//產生正弦波函數
{
unsigned inti;

do{
P2=sin_code[i];
i=i+1;
}while(i<256);
}
void juchibo()//產生鋸齒波函數
{
P2=0x00;
do{
P2=P2+1;
}while(P2<=0xff);
}
void sanjiaobo()//產生三角波函數
{
P2=0x00;
do{
P2=P2+1;
}while(P2<0xff);
P2=0xff;
do{
P2=P2-1;
}while(P2>0x00);
P2=0x00;
}
void tixingbo()//產生梯形波函數
{
unsigned char i;
P2=0x00;
do{
P2=P2+1;
}while(P2<0xff);
P2=0xff;
for(i=255;i>0;i--)
{
P2=0xff;
}
do{
P2=P2-1;
}while(P2>0x00);
P2=0x00;
}
void timer0(void) interrupt 1//中斷函數
{
P2=~P2; //取反
TH0=0xff; //重新裝入初值
TL0=0x83;
TR0=1;
}
/*主函數*/
void main()
{
init_DA0832();//初始化
do
{
flag=kscan();
}while(!flag);//等待按鍵按下
while(1)
{
switch(flag)
{
case 1:
do{
flag=kscan();
sin();
}while(flag==1);//產生正弦波
break;
case 2:
fangbo();
do{
flag=kscan();
}while(flag==2);//產生方波
TR0=0;
break;
case 3:
do{
flag=kscan();
sanjiaobo();
}while(flag==3);//產生三角波
break;
case 4:
do{
flag=kscan();
tixingbo();
}while(flag==4);//產生梯形波
break;
case 5:
do{
flag=kscan();
juchibo();
}while(flag==5);//產生鋸齒波
break;
default:
flag=kscan();
break;
}
}
}

H. 利用單片機產生梯形波，高手進！

只是正常的波形而已，只要在單片機程序中控制輸出高低電平即可。高電平時即為頂端，低電平即為波谷，通過控制高低電平的輸出時間，就可以得到想要的規則波形，如輸出高電平1s，轉而輸出低電平1s，反復交替，出來的結果就是等距的梯形波排列。同時，沒有絕對意義的矩形波，由於器件的特性，如需要充放電時間等，波的邊沿不可能是垂直的，不可能一下子就到波谷或者波峰。需要一個爬升、下降時間，這樣一來波的邊沿就會變成有一個坡度，因此在示波器上看起來就像一個個梯形。從你給出的圖看，這是一個時序圖而已，器件本身工作特性。不知道你為什麼要做這個波形。