基于单片机直流电机速度控制系统设计

【资源下载】下载地址如下1549：
https://docs.qq.com/doc/DTlRSd01BZXNpRUxl

两种方式调速：ADC采集阻值变速和按键档位变速两种方式使用按键切换来实现分别的速度控制。注：开关键对按键调速有效，对阻值调速无效。

#define T0LOWW	0x8a


/*********************************************
*
*********************************************/
typedef unsigned char	u8;
typedef unsigned int	u16;
typedef unsigned long	u32;
typedef bit		BOOL;


/*********************************************
* 单片机管脚定义
*********************************************/
sbit	KEY_ON_PIN	= P2 ^ 0;
sbit	KEY_INC_PIN	= P2 ^ 1;
sbit	KEY_DEC_PIN	= P2 ^ 2;

sbit	MOTO_LEFT	= P3 ^ 6;
sbit	MOTO_RIGHT	= P3 ^ 7;

sbit	CLOCK	= P2 ^ 4;
sbit	ST	= P2 ^ 5;
sbit	EOC	= P2 ^ 6;
sbit	OE	= P2 ^ 7;

sbit CHANGE = P2 ^ 3;


/*********************************************
* 按键定义
*********************************************/
#define KEY_NULL		0xff
#define KEY_LONG_PERIOD		25
#define KEY_CONTINUE_PERIOD	20

#define KEY_DOWN	0x80
#define KEY_CONTINUE	0x40
#define KEY_UP		0x20

#define KEY_STATE_INIT		0
#define KEY_STATE_WOBBLE	1
#define KEY_STATE_PRESS		2
#define KEY_STATE_LONG		3
#define KEY_STATE_CONTINUE	4
#define KEY_STATE_RELEASE	5

#define KEY_ON_VALUE	1
#define KEY_INC_VALUE	2
#define KEY_DEC_VALUE	3

#define KEY_ON		(KEY_ON_VALUE | KEY_DOWN)
#define KEY_INC		(KEY_INC_VALUE | KEY_DOWN)
#define KEY_INC_CON	(KEY_INC_VALUE | KEY_CONTINUE)
#define KEY_DEC		(KEY_DEC_VALUE | KEY_DOWN)
#define KEY_DEC_CON	(KEY_DEC_VALUE | KEY_CONTINUE)


/*********************************************
* 常量定义
*********************************************/
#define true	1
#define false	0

#define MOTO_ON		MOTO_LEFT	= false; \
	MOTO_RIGHT			= true
#define MOTO_OFF	MOTO_LEFT	= true;	\
	MOTO_RIGHT			= true


/*********************************************
* 全局变量定义
*********************************************/
code u8 DisCode[] = { 0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8, 0x80, 0x90, 0xff };

u8	PWMpercent	= 0;
u8	DisNum[4]	= { 0x0a, 0x0a, 0x0a, 0x00 };
u8	DisPosition	= 0;
u8	SecCount	= 0;
u8	u10msNum	= 0;
u16	ADTemp;

u8 start = 0;