单片机报告文档格式.docx

单片机报告文档格式.docx

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AB->

A）.

2.应用领域

（1）在数控钻床的应用

（2）在数控铣床的应用

（3）在计算机外部设备的应用

（4）在电火花切割机床中的应用

（5）在电子雕花机中的应用

二、设计原理

1、设计目的

（1）了解步进电机的基本原理，掌握步进电机的转动编程方法

（2）了解影响电机转速的因素有哪些

三、电路设计

1.单片机型号的选择

现在普遍的用的是80C31和80C51，80C51的EA加上高低电平，决定单片机访问内部或外部的程序存储器，EA高电平时，访问内部程序存储器，但当程序计数器（PC）值超过0FFH时单片机自动转向外部程序存储器。

当EA为低电平时，不管单片机有无内部存储器，只访问外部存储器。

80C31没有内部存储器，所以EA必须接地，这样单片机只能选择外部程序存储器。

所以选80C51性能比较好。

2、硬件电路图

四软件设计

1、程序框图

2、程序

MAIN_CODESEGMENTCODE

MAIN_BITSEGMENTBIT

MAIN_DATASEGMENTDATA

STACKSEGMENTIDATA

CMD_8279XDATA0bF01H

DATA_8279XDATA0bF00H

RSEGMAIN_DATA

StepControl:

DS1

buffer:

DS8

SpeedNo:

DS1

StepDelay:

StartStepDelay:

StartStepDelay1:

DS1

RSEGMAIN_BIT

bFirst:

DBIT1

bClockwise:

DBIT1

bNeedDisplay:

DBIT1

RSEGSTACK

DS20H

CSEGAT0000H

LJMPSTAR

CSEGAT000BH

LJMPTIMER0

RSEGMAIN_CODE

STAR:

MOVSP,#STACK-1

ACALLINIT8279

SETBbFirst

SETBbClockwise

MOVStepControl,#33H

MOVSpeedNo,#5

MOVTMOD,#02H

MOVTH0,#55

MOVTL0,#55

MOVIE,#82H

MOVBuffer+7,#0

MOVbuffer+6,#0

MOVbuffer+5,#0

MOVbuffer+4,#0

MOVbuffer+3,#10H

MOVbuffer+2,SpeedNo

MOVbuffer+1,#10H

MOVbuffer,#0

STAR2:

MOVR0,#buffer

acalldisplay8

STAR3:

ACALLScan_Key

JCSTAR5

JNBbNeedDisplay,STAR3

CLRbNeedDisplay

ACALLStep_SUB_1

SJMPSTAR2

STAR5:

CLRTR0

CJNEA,#10,$+3

JNCSTAR1

MOVbuffer+4,buffer+5

MOVbuffer+5,buffer+6

MOVbuffer+6,buffer+7

MOVBuffer+7,A

STAR1:

CJNEA,#14,$+3

JNCSTAR3

MOVDPTR,#DriverTab

CLRC

SUBBA,#10

RLA

JMP@A+DPTR

DriverTab:

SJMPDirection

SJMPSpeed_up

SJMPSpeed_Down

SJMPExec

Direction:

CPLbClockwise

JBbClockwise,Clockwise

MOVbuffer,#1

AntiClockwise:

JNBbFirst,AntiClockwise1

MOVStepControl,#91H

SJMPDirection1

AntiClockwise1:

MOVA,StepControl

RRA

MOVStepControl,A

Clockwise:

MOVbuffer,#0

JNBbFirst,Clockwise1

MOVStepControl,#33H

Clockwise1:

MOVA,StepControl

RLA

Direction1:

SJMPSTAR2

Speed_up:

MOVA,SpeedNo

CJNEA,#11,Speed_up1

SJMPspeed_up2

Speed_up1:

INCSpeedNo

MOVbuffer+2,SpeedNo

Speed_up2:

SJMPSTAR2

Speed_Down:

MOVA,SpeedNo

JZSpeed_Down1

DECSpeedNo

Speed_Down1:

SJMPSTAR2

Exec:

CLRbFirst

ACALLTakeStepCount

MOVDPTR,#StepDelayTab

MOVCA,@A+DPTR

MOVStepDelay,A

CJNEA,#50,$+3

JNCExec1

MOVA,#50

Exec1:

MOVStartStepDelay,A

MOVStartStepDelay1,A

SETBTR0

AJMPSTAR2

StepDelayTab:

DB250,125,83,62,50,42,36,32,28,25,22,21

TIMER0:

PUSHACC

DJNZStartStepDelay,TIMER0_1

MOVA,StartStepDelay1

CJNEA,StepDelay,TIMER0_5

SJMPTIMER0_2

TIMER0_5:

DECA

TIMER0_2:

MOVStartStepDelay,A

CPLA

MOVP1,A

JBbClockwise,TIMER0_3

SJMPTIMER0_4

TIMER0_3:

TIMER0_4:

MOVA,R6

ORLA,R7

JZTIMER0_1

SETBbNeedDisplay

DJNZR7,TIMER0_1

DJNZR6,TIMER0_1

CLRTR0

TIMER0_1:

POPACC

RETI

Step_SUB_1:

MOVR5,#4

MOVR0,#buffer+7

Step_SUB_1_1:

MOVA,@R0

DEC@R0

JNZStep_SUB_1_2

MOV@R0,#9

DECR0

DJNZR5,Step_SUB_1_1

Step_SUB_1_2:

RET

TakeStepCount:

MOVA,buffer+4

MOVB,#10

MULAB

ADDA,buffer+5

ADDA,buffer+6

MOVR7,A

MOVA,B

ADDCA,#0

MOVB,#10

MULAB

XCHA,R7

XCHA,B

ADDA,R7

ADDA,buffer+7

MOVR7,A

MOVA,B

ADDCA,#0

MOVR6,A

CJNER7,#0,TakeStepCount1

RET

TakeStepCount1:

INCR6

RET

INIT8279:

MOVA,#34H

MOVX@DPTR,A

CLRA

MOVDPTR,#CMD_8279

INIT8279_1:

CALLCLEAR

MOVA,#90H

MOVX@DPTR,A

CLEAR:

MOVA,#0DEH

WAIT1:

MOVXA,@DPTR

JBACC.7,WAIT1

SCAN_KEY:

MOVXA,@DPTR

READ_FIFO:

ANLA,#7

JZNO_KEY

READ:

MOVA,#40H

MOVDPTR,#DATA_8279

ACALLKEY_NUM

SETBC

SCAN_KEY1: