//-----------------------------------------------------------------
//  名稱: 用ULN2803驅(qū)動步進電機運行
//-----------------------------------------------------------------
//  說明: 本例運行時,按下K1時電機正轉(zhuǎn)3圈,按下K2時反轉(zhuǎn)3圈,
//        按下K3時停止.在進行相應(yīng)操作時,對應(yīng)LED將被點亮.
//               
//-----------------------------------------------------------------
#include <pic.h>
#define INT8U   unsigned char
#define INT16U  unsigned int
#define _XTAL_FREQ 1000000UL

//本例四相步進電機工作于八拍方式
//正轉(zhuǎn)勵磁序列為A->AB->B->BC->C->CD->D->DA
const INT8U FFW[] = {0x01,0x03,0x02,0x06,0x04,0x0C,0x08,0x09};
//反轉(zhuǎn)勵磁序列為A->AD->D->CD->C->BC->B->AB
const INT8U REV[] = {0x01,0x09,0x08,0x0C,0x04,0x06,0x02,0x03};

//按鍵定義
#define K1_DOWN() (RB0 == 0)                         //K1:正
#define K2_DOWN() (RB3 == 0)                         //K2:反
#define KX_DOWN() (RB0 == 0 || RB3 == 0 || RB5 == 0) //KX:任意鍵按下
//LED定義
#define LED1  0
#define LED2  3
#define LED3  5
//-----------------------------------------------------------------
// 步進電機正轉(zhuǎn)或反轉(zhuǎn)n圈(本例步進電機在8拍方式下每次步進45度角)
//-----------------------------------------------------------------
void STEP_MOTOR_RUN(INT8U Direction,INT8U n)
{ 


}
 
//-----------------------------------------------------------------
// 主程序 
//-----------------------------------------------------------------
void main()
{ 
    INT8U r = 3;                     //轉(zhuǎn)動圈數(shù)
    TRISB = 0xFF; RBPU = 0;          //RB端口按鍵輸入,內(nèi)部弱上拉 
    TRISC = 0x00; PORTC = ~(1<<LED3);//LED輸出,初始時停止指示燈LED3點亮
    TRISD = 0x00; //PORTD = FFW[0];  //電機控制輸出,電機歸位
    while(1)
    {  


    }
}