基于51单片机的步进电机正反转调速系统控制_仿真+源程序+详细教程.zip

//----------------------------------------------------------------- // 名称:步进电机(28BYJ-48)程序 //---1~9档的转速------------------------------------------------ //DEE4 定时时间 8.476ms , 转速 1.73r/min //E1EC 定时时间 7.7ms , 转速 1.90r/min //E5D4 定时时间 6.7ms, 转速 2.19r/min //E9BC 定时时间 5.7ms, 转速 2.57r/min //EDA4 定时时间 4.7ms, 转速 3.12r/min //F18C 定时时间 3.7ms, 转速 3.96r/min //F574 定时时间 2.7ms, 转速 5.43r/min //F95C 定时时间 1.7ms, 转速 8.62r/min //FC18 定时时间 1ms , 转速 14.65r/min //----------------------------------------------------------------- //转一圈需要节拍数：360/(5.625/64) = 4096 个节拍 //转速r/min = (60*1000) / (4096 * 定时时间) //----------------------------------------------------------------- #include "Key.h" //0~9 的共阳数码管段码，最后一个是黑屏 const uchar SEG_CODE[] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0xFF}; //输出励磁序列的频率参数{TH1,TL1} const uchar Timer[9][2]={{0xDE,0xE4},{0xE1,0xEC},{0xE5,0xD4},{0xE9,0xBC}, //8.476 ~ 1ms {0xEd,0xA4},{0xF1,0x8C},{0xF5,0x74},{0xF9,0x5C},{0xFC,0x18}}; //步进电机正转的励磁序列 const uchar FFW[] = {0x1F,0x3F,0x2F,0x6F,0x4F,0xCF,0x8F,0x9F}; //DCBAXXXX //步进电机反转的励磁序列 const uchar REV[] = {0x9F,0x8F,0xCF,0x4F,0x6F,0x2F,0x3F,0x1F}; //DCBAXXXX //枚举变量--正反转标志 typedef enum {FwdRun, RevRun} RunFlag; RunFlag flag1 = FwdRun; uchar speed = 0; //函数声明 void T0_Init(); //定时器0初始化函数声明 void T1_Init(); //定时器1初始化函数声明 void KeyService(); //按键服务函数声明 void delay_ms(uint t); //毫秒延时函数声明 //----------------------------------------------------------------- // 主程序 //----------------------------------------------------------------- void main() { T0_Init(); //定时器0初始化 T1_Init(); //定时器1初始化 FWD_LED = 0; //正转指示灯亮，默认初始化是正转 delay_ms(500); //延时500ms，待各个模块上电稳定 EA = 1; //开启中断 while(1) { KeyService(); //按键服务程序 } } //----------------------------------------------------------------- // Timer0 初始化，模式1，允许中断，1ms定时 // Timer0 用于按键扫描 //----------------------------------------------------------------- void T0_Init() { TMOD &= 0xF0; TMOD |= 0x01; //T0工作于模式1,16位定时器 TH0 = (65536 - 1000) >> 8; //1ms定时 TL0 = (65536 - 1000) & 0xFF; ET0 = 1; //允许T0中断 TR0 = 1; //启动T0 } //----------------------------------------------------------------- // Timer1 初始化，模式1，允许中断 // Timer1 用于改变步进电机转速 //----------------------------------------------------------------- void T1_Init() { TMOD &= 0x0F; TMOD |= 0x10; //定时器1工作于模式1,16位定时器 TH1 = Timer[speed][0]; TL1 = Timer[speed][1]; //定时器1，定时用于步进电机转速控制 ET1 = 1; //允许T1中断 PT1 = 1; //定时器1优先级高 TR1 = 0; //关闭定时器1 } //----------------------------------------------------------------- // Timer0 中断服务程序 //----------------------------------------------------------------- void InterruptTime0() interrupt 1 { TH0 = (65536 - 1000) >> 8; //1ms TL0 = (65536 - 1000) & 0xFF; KeyScan(); //按键扫描 } //----------------------------------------------------------------- // Timer1 中断服务程序 //----------------------------------------------------------------- void InterruptTime1() interrupt 3 { static step1 = 0; static step2 = 0; TH1 = Timer[speed - 1][0]; //根据不同的转速档位，给定时器1赋定时器值 TL1 = Timer[speed - 1][1]; //按照定时器1的频率循环发送正转励磁序列的脉冲给步进电机，使其不停地转动 if(flag1 == FwdRun)//正转 { MotorDriver = FFW[step1++]; if(step1 == 8) step1 = 0; } //按照定时器1的频率循环发送反转励磁序列的脉冲给步进电机，使其不停地转动 else if(flag1 == RevRun) { MotorDriver = REV[step2++]; if(step2 == 8) step2 = 0; } } //----------------------------------------------------------------- // 按键服务程序 //----------------------------------------------------------------- void KeyService() { switch (KeyCode) { case 1: flag1 = FwdRun; //正转 FWD_LED = 0; REV_LED = 1; //正转指示灯亮 KeyCode = 0; break; case 2: flag1 = RevRun; //反转 FWD_LED = 1; REV_LED = 0; //反转指示灯亮 KeyCode = 0; break; case 3: speed++; //速度加 if(speed == 10) speed = 1; SpeedShow = SEG_CODE[speed]; if(TR1 == 0) TR1 = 1; KeyCode = 0; break; case 4: speed--; //速度减 if(speed == 0 || speed == -1 ) speed = 9; SpeedShow = SEG_CODE[speed]; if(TR1 == 0) TR1 = 1; KeyCode = 0; break; case 5: TR1 = 0; //停止 SpeedShow = 0xFF; MotorDriver = 0x00; KeyCode = 0; break; default: ; } } //----------------------------------------------------------------- //函数名称： void delay_ms(uint t) //函数功能: 延时ms程序(粗略) //调用子函数: 无 //输入参数: t //返回值: 无 //----------------------------------------------------------------- void delay_ms(uint t) { uchar i; while(t--) for(i = 0; i < 125; i++); }