Protues

完成功能： 数码管显示 ‘键盘输入角度-实际运动角度-运动状态-速度等级’ 键盘控制 步进电机 左转 右转 暂停 加减速 键盘输入0~9 ENTER可使步进电机运动到指定位置 这里用38译码器作为IO口扩展芯片 74HC245作为IO扩展芯片传送门，点击跳转

存在的BUG 8段数码管不能同时显示。不方便观察

//1-2相励磁法 #include <REG51.H> #include <ABSACC.H> #define LED_port XBYTE[0x7FFF] #define uint unsigned int #define uchar unsigned char // 步进电机定义 #define out P2 uchar code turn[] = {0xf3, 0xf2, 0xf6, 0xf4, 0xfc, 0xf8, 0xf9, 0xf1}; //单双八拍 uchar code speed[] = {1, 5, 10, 15, 20, 30, 40, 50}; //转动间隔——转动速度 uchar i = 0, flag = 0, sp = 3, count = 0, Angle = 0, Sort = -1; uchar F = 0, S = 0, enter = 0; void turnRight(); void turnLeft(); void adjustState(); void stepper(); void angleEnter(); // LED定义 uchar dispcode[] = {0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f, 0x77, 0x7c, 0x39, 0x5e, 0x79, 0x71, 0x40, 0xf3, 0xF7, 0xb8}; //为实现视觉效果‘键值-扫描值’_'-''P''A(R)''L' uchar dat[10] = {15, 15, 15, 0, 0, 0, 0, 0}; uchar active = 0; void ShowLED(); // 键盘定义 uchar line, row, kvalue = 0, kscan, kscanA = 0, kscanB = 0; uchar keyRowLine(); void getKeyVaule(); void delay1ms(uchar n) //定时n ms { uint t = n * 1000; TH1 = (65536 - t) / 256; TL1 = (65536 - t) % 256; TR1 = 1; while (TF1 != 1) { /* code */ } TF1 = 1; } void main()//主函数 { out = turn[i]; //初始状态定在0度 TMOD = 0x11; TH0 = (65536 - 1000) / 256; TL0 = (65536 - 1000) % 256; EA = 1; ET0 = 1; TR0 = 1; while (1) { getKeyVaule(); //获得键值，调整标志位 adjustState(); //由标志位调整速度（每次换向的时间间隔） if (count >= speed[sp]) { stepper(); //步进电机左转，右转，停止。 count = 0; } if (enter) { //ENTER键按下步进电机运动到指定位置 angleEnter(); } } } void timer0() interrupt 1 { TH0 = (65536 - 10000) / 256; TL0 = (65536 - 10000) % 256; ShowLED(); count++; } // LED显示 void ShowLED() { P3 = P3 | 0xf7; //关显示 消隐 P3 = active | 0xf8; //低三位接38译码器，其他位置1 LED_port = dispcode[dat[active]]; active = active < 8 ? active + 1 : 0; } void turnRight()//右转函数 { i = i < 8 ? i + 1 : 0; out = turn[i]; } void turnLeft()//左转函数 { i = i > 0 ? i - 1 : 7; out = turn[i]; } // 行列反转法 uchar keyRowLine() { uchar before; P1 = 0x0f; line = P1; if (line != 0x0f) { /* 判断行状态 */ delay1ms(20); line = P1; if (line != 0x0f) { /* 有按键按下 */ line = line & 0x0f; P1 = 0xf0; delay1ms(1); //等待变化时间 row = P1; row = row & 0xf0; kscan = line | row; before = P1; while (P1 == before) { /* code */ } Sort = Sort < 3 ? Sort + 1 : 0; return kscan; } } return 0xff; } // 速度控制 void adjustState() { if (F) { sp = sp > 0 ? sp - 1 : 7; } else if (S) { sp = sp < 8 ? sp + 1 : 0; } } // 回车Enter控制角度 void angleEnter() { uint allAngle, showAngle; allAngle = 100 * dat[0] + 10 * dat[1] + dat[2]; //输入的角度 i = ((allAngle % 360) / 45); //单双八拍 步距角45度 out = turn[i]; showAngle = 45 * i; //对应步进电机运动角度 dat[3] = showAngle / 100; //显示百位 dat[4] = (showAngle % 100) / 10; //显示百十位 dat[5] = showAngle % 10; //显示个位 } // 步进电机开启暂停 void stepper() { if (flag == 1) { turnRight(); } else if (flag == 2) { turnLeft(); } else if (flag == 0) { i = i; } } // 获得键编码，调整标志位 void getKeyVaule() { uchar Kscan; Kscan = keyRowLine(); switch (Kscan) { case 0xee: flag = 1; break; case 0xde: flag = 2; break; case 0xbe: flag = 0; break; case 0x7e: enter = 1; break; case 0xed: F = 1; break; case 0xdd: S = 1; break; case 0xbd: Angle = 0; break; case 0x7d: Angle = 1; break; case 0xeb: Angle = 2; break; case 0xdb: Angle = 3; break; case 0xbb: Angle = 4; break; case 0x7b: Angle = 5; break; case 0xe7: Angle = 6; break; case 0xd7: Angle = 7; break; case 0xb7: Angle = 8; break; case 0x77: Angle = 9; break; default: F = 0; S = 0; break; } dat[Sort] = Angle; //前三位显示输入的角度 dat[6] = (17 + flag); //显示步进电机运动状态 dat[7] = sp; //显示运动速度等级 }