/***************************************************
程序使用1毫秒定時(shí)器中斷實(shí)現(xiàn)轉(zhuǎn)速精確控制
步進(jìn)電機(jī)用8拍驅(qū)動(dòng)（A-AB-B-BC-C-CD-D-DA）
****************************************************/
#include?
#include?“LCD1602.H“


#define???uchar?unsigned?char?
#define???uint??unsigned?int?
#define???ulong?unsigned?long

/*****端口定義************/
#define?P_key??P3
sbit?motor_a=P1^0;
sbit?motor_b=P1^1;
sbit?motor_c=P1^2;
sbit?motor_d=P1^3;

bit???run=0;
uint??speed;
uint??temp_t1temp_t2;
uchar?KeyValue?;
uchar?motor_step;

void??Disply（void）;?//顯示
uchar?GetKey（void）;//返回鍵盤值0--16
void??ScanKey（void）;//鍵盤掃描處理
void??SetMotorSpeed（uint?nSpeed）;//設(shè)置電機(jī)轉(zhuǎn)速?nSpeed:轉(zhuǎn)速?step/s
void??delayNms（uint?z）;//延時(shí)
?
/*****主函數(shù)************/
void?main（）
{
???lcd1602_init（）;
???motor_a=0;
???motor_b=1;
???motor_c=1;
???motor_d=1;?
???motor_step=0;
???TMOD?=?0x01;
???TH0?=?0x0FC;
???TL0?=?0x18;
???EA?=?1;
???ET0?=?1;
???TR0?=?1;
???while（1）
???{?
????Disply（）;
	ScanKey（）;
???}
}


/*****延時(shí)************/??
void?delayNms（uint?z）
{
	uint?x;
	for（?;z>0;z--）
		for（x=124;x>0;x--）
			;
}

/*****設(shè)置電機(jī)轉(zhuǎn)速************/
void??SetMotorSpeed（uint?nSpeed）//?nSpeed:轉(zhuǎn)速?step/s
{
??speed=nSpeed;
??if（speed!=0）
??{
????run=1;
	//計(jì)算每步需要多少毫秒
	temp_t2=1000/nSpeed;
??}
??else
??{
????run=0;
??}
}


/*****1毫秒定時(shí)器************/
void?Timer0Interrupt（void）?interrupt?1
{
???if（run）
???{
?????temp_t1++;
	?if（temp_t1>temp_t2）
	?{
	????temp_t1=0;
	????motor_step++;
	????if（motor_step>7）??motor_step=0;
????????switch?（motor_step）
	????{
	???????case?0:
	???????{
	??????????motor_a=0;?motor_b=1;
		??????motor_c=1;?motor_d=1;
		??????break;
	????????}
	????????case?1:
	????????{
	??????????motor_a=0;?motor_b=0;
		??????motor_c=1;?motor_d=1;
		??????break;
	????????}
	????????case?2:
	????????{
	??????????motor_a=1;?motor_b=0;
		??????motor_c=1;?motor_d=1;
		??????break;
	????????}
	????????case?3:
	????????{
	??????????motor_a=1;?motor_b=0;
		??????motor_c=0;?motor_d=1;
		??????break;
	????????}
	????????case?4:
	????????{
	??????????motor_a=1;?motor_b=1;
		??????motor_c=0;?motor_d=1;
		??????break;
	????????}
	????????case?5:
	????????{
	??????????motor_a=1;?motor_b=1;
		??????motor_c=0;?motor_d=0;
		??????break;
	????????}
	????????case?6:
	????????{
	??????????motor_a=1;?motor_b=1;
		??????motor_c=1;?motor_d=0;
		??????break;
	????????}
	????????case?7:
	????????{
	??????????motor_a=0;?motor_b=1;
		??????motor_c=1;?motor_d=0;
		??????break;
	????????}
	???????default:?break;	???
	?????}
		?
	??}
	}
????TH0?=?0x0FC;
????TL0?=?0x18;
}


/***********顯示************/
void?Disply（?）?
{
????uchar?DisBuff[16];
	DisBuff[0]=‘S‘;
	DisBuff[1]=‘p‘;
	DisBuff[2]=‘e‘;
	DisBuff[3]=‘e‘;
	DisBuff[4]=‘d‘;
	DisBuff[5]=speed>9999???speed%100000/10000+0x30?:?0x20;
	DisBuff[6]=speed>999???speed%10000/1000+0x30?:?0x20;
	DisBuff[7]=speed>99???speed%1000/100+0x30?:?0x20;
	DisBuff[8]=speed>9???speed%100/10+

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2013-01-22?11:26??lcd1602?motor\
?????文件??????109105??2011-12-27?19:46??lcd1602?motor\Last?Loaded?sx.DBK
?????文件????????1985??2006-06-11?08:38??lcd1602?motor\LCD1602.H
?????文件????????5421??2011-12-28?00:30??lcd1602?motor\main.c
?????文件???????12344??2011-12-28?00:30??lcd1602?motor\main.LST
?????文件???????15267??2011-12-28?00:30??lcd1602?motor\main.OBJ
?????文件??????????34??2011-12-28?00:30??lcd1602?motor\main.__i
?????文件???????14072??2011-12-28?00:30??lcd1602?motor\motor_1602
?????文件????????4865??2011-12-28?00:30??lcd1602?motor\motor_1602.hex
?????文件??????????62??2011-12-28?00:30??lcd1602?motor\motor_1602.lnp
?????文件???????21572??2011-12-28?00:30??lcd1602?motor\motor_1602.M51
?????文件?????????908??2011-12-28?11:38??lcd1602?motor\motor_1602.opt.bak
?????文件?????????184??1993-05-05?07:51??lcd1602?motor\motor_1602.plg
?????文件????????2171??2011-12-27?23:21??lcd1602?motor\motor_1602.Uv2.bak
?????文件???????55401??1993-05-05?07:51??lcd1602?motor\motor_1602.uvopt
?????文件???????13422??1993-05-05?07:51??lcd1602?motor\motor_1602.uvproj
?????文件????????1064??2011-12-28?00:35??lcd1602?motor\motor_1602_Opt.Bak
?????文件????????2170??2011-12-27?20:05??lcd1602?motor\motor_1602_Uv2.Bak
?????文件????????6376??2011-12-28?00:27??lcd1602?motor\STARTUP.A51
?????文件???????10782??2011-12-28?00:27??lcd1602?motor\STARTUP.LST
?????文件?????????750??2011-12-28?00:27??lcd1602?motor\STARTUP.OBJ
?????文件??????116440??2011-12-28?00:34??lcd1602?motor\sx.DSN
?????文件?????????840??2013-01-22?11:26??lcd1602?motor\sx.PWI
?????文件?????????109??2011-12-27?17:40??lcd1602?motor\新建文本文檔.txt