• 基于C51小车测速

    目录

    前期准备：

    测速模块

    测试原理和单位换算

    定时器和中断实现测速

    蓝牙和oled屏幕显示测速

    前期准备：

    (43条消息) 基于C51语音控制小车_菜鸟成长之路丶的博客-CSDN博客

    测速模块

    • 用途：广泛用于电机转速检测，脉冲计数,位置限位等 
    • 有遮挡，输出高电平；无遮挡，输出低电平
    • 接线
         VCC 接电源正极 3.3-5V  
         GND 接电源负极
         DO TTL 开关信号输出
         AO 此模块不起作用

    测试原理和单位换算

    轮子走一圈，经过一个周长， C = 2x3.14x 半径 = 3.14 x 直径（ 6.5cm ）
    对应的码盘也转了一圈，码盘有 20 个格子，每经过一个格子，会遮挡（高电平）和不遮挡（低电平），
    那么一个脉冲就是走了 3.14 * 6.5 cm /20 = 1.0205CM
    定时器可以设计成一秒，统计脉冲数，一个脉冲就是 1cm
    假设一秒有 80 脉冲，那么就是 80cm/s

    定时器和中断实现测速

    uart.c文件

    1. #include "reg52.h"
    2. #include "motor.h"
    3. #include "string.h"
    4. sbit D5 = P3^7;
    5. #define SIZE 12
    6.  
    7. sfr AUXR = 0x8E;
    8. char buffer[SIZE];
    9.  
    10. void UartInit(void)     //9600bps@11.0592MHz
    11. {
    12.     AUXR = 0x01;
    13.     SCON = 0x50; //配置串口工作方式1，REN使能接收
    14.     TMOD &= 0x0F;
    15.     TMOD |= 0x20;//定时器1工作方式位8位自动重装
    16.      
    17.     TH1 = 0xFD;
    18.     TL1 = 0xFD;//9600波特率的初值
    19.     TR1 = 1;//启动定时器
    20.      
    21.     EA = 1;//开启总中断
    22.     ES = 1;//开启串口中断
    23. }
    24.  
    25.  
    26. void SendByte(char mydata)
    27. {
    28.     SBUF = mydata;
    29.     while(!TI);
    30.     TI = 0;
    31. }
    32.  
    33. void SendString(char *str)
    34. {
    35.     while(*str != '\0'){
    36.         SendByte(*str);
    37.         str++;
    38.     }
    39. }
    40.  
    41.  
    42. //M1qian  M2 hou M3 zuo  M4 you
    43. void Uart_Handler() interrupt 4
    44. {
    45.     static int i = 0;//静态变量，被初始化一次
    46.     char tmp;
    47.  
    48.     if(RI)//中断处理函数中，对于接收中断的响应
    49.     {
    50.             RI = 0;//清除接收中断标志位
    51.             tmp = SBUF;
    52.             if(tmp == 'M'){
    53.                 i = 0;
    54.             }
    55.             buffer[i++] = tmp;
    56.          
    57.             //灯控指令
    58.             if(buffer[0] == 'M'){
    59.                 switch(buffer[1]){
    60.                     case '1':
    61.                         goForward();
    62.                         break;
    63.                     case '2':
    64.                         goBack();
    65.                         break;
    66.                     case '3':
    67.                         goLeft();
    68.                         break;
    69.                     case '4':
    70.                         goRight();
    71.                         break;
    72.                     default:
    73.                         stop();
    74.                         break;
    75.                 }
    76.             }
    77.          
    78.             if(i == 12) {
    79.                 memset(buffer, '\0', SIZE);
    80.                 i = 0;
    81.             }
    82.     }
    83.          
    84. }

    uart.h文件

    1. void UartInit(void);
    2. void SendString(char *str);
    3. void SendByte(char mydata);

    time.c文件

    1. #include "motor.h"
    2. #include "reg52.h"
    3.  
    4. extern unsigned int speedCnt;
    5. unsigned int speed;
    6. char signal = 0;
    7. unsigned int cnt = 0;
    8.  
    9. void Time0Init()
    10. {
    11.     //1. 配置定时器0工作模式位16位计时
    12.     TMOD = 0x01;
    13.     //2. 给初值，定一个0.5出来
    14.     TL0=0x33;
    15.     TH0=0xFE;
    16.     //3. 开始计时
    17.     TR0 = 1;
    18.     TF0 = 0;
    19.     //4. 打开定时器0中断
    20.     ET0 = 1;
    21.     //5. 打开总中断EA
    22.     EA = 1;
    23. }
    24.  
    25. void Time0Handler() interrupt 1
    26. {
    27.     cnt++;  //统计爆表的次数. cnt=1的时候，报表了1
    28.     //重新给初值
    29.     TL0=0x33;
    30.     TH0=0xFE;
    31.      
    32.     if(cnt == 2000){//爆表2000次，经过了1s
    33.         signal = 1;
    34.         cnt = 0;  //当100次表示1s，重新让cnt从0开始，计算下一次的1s
    35.         //计算小车的速度，也就是拿到speedCnt的值
    36.         speed = speedCnt;
    37.         speedCnt = 0;//1秒后拿到speedCnt个格子，就能算出这1s的速度，格子清零
    38.     }
    39.          
    40. }

    time.h文件

    void Time0Init();

    motor.c文件

    1. #include "reg52.h"
    2.  
    3. sbit RightCon1A = P3^7;
    4. sbit RightCon1B = P3^3;
    5.  
    6. sbit LeftCon1A = P3^4;
    7. sbit LeftCon1B = P3^5;
    8.  
    9. void goForward()
    10. {
    11.     LeftCon1A = 0;
    12.     LeftCon1B = 1;
    13.      
    14.     RightCon1A = 0;
    15.     RightCon1B = 1;
    16. }
    17.  
    18. void goRight()
    19. {
    20.     LeftCon1A = 0;
    21.     LeftCon1B = 1;
    22.      
    23.     RightCon1A = 0;
    24.     RightCon1B = 0;
    25. }
    26.  
    27.  
    28. void goLeft()
    29. {
    30.     LeftCon1A = 0;
    31.     LeftCon1B = 0;
    32.      
    33.     RightCon1A = 0;
    34.     RightCon1B = 1;
    35. }
    36.  
    37. void goBack()
    38. {
    39.     LeftCon1A = 1;
    40.     LeftCon1B = 0;
    41.      
    42.     RightCon1A = 1;
    43.     RightCon1B = 0;
    44. }
    45.  
    46. void stop()
    47. {
    48.     LeftCon1A = 0;
    49.     LeftCon1B = 0;
    50.      
    51.     RightCon1A = 0;
    52.     RightCon1B = 0;
    53. }

    motor.h文件

    1. void goRight();
    2. void goLeft();
    3. void goForward();
    4. void goBack();
    5. void stop();

    delay.c文件

    1. #include "intrins.h"
    2.  
    3. void Delay1000ms()      //@11.0592MHz
    4. {
    5.     unsigned char i, j, k;
    6.  
    7.     _nop_();
    8.     i = 8;
    9.     j = 1;
    10.     k = 243;
    11.     do
    12.     {
    13.         do
    14.         {
    15.             while (--k);
    16.         } while (--j);
    17.     } while (--i);
    18. }

    delay.h文件

    void Delay1000ms();

    main.c文件

    1. /****  Author: 上官可编程(抖音) ************
    2.  ****  录播课堂代码，为小白学习功能实现 ****
    3.  ****    代码合理性和效率不做评估 ************
    4.  ****  2022/3/22 3:35 **********************
    5. ********************************************/
    6.  
    7. #include "motor.h"
    8. #include "delay.h"
    9. #include "uart.h"
    10. #include "reg52.h"
    11. #include "time.h"
    12. #include "stdio.h"
    13.  
    14. sbit speedIO = P3^2;//外部中断0
    15. unsigned int speedCnt = 0; //统计格子，脉冲次数
    16. extern unsigned int speed;//速度
    17. extern char signal; //主程序发速度数据的通知
    18. char speedMes[24];  //主程序发送速度数据的字符串缓冲区
    19.  
    20. void Ex0Init()
    21. {
    22.     EX0 = 1;//允许中断
    23.     //EA = 1;在串口初始化函数中已经打开了总中断
    24.     IT0 = 1;//外部中断的下降沿触发
    25. }
    26.  
    27. void main()
    28. {
    29.     Time0Init();//定时器0初始化
    30.     UartInit();//串口相关初始化
    31.     //外部中断初始化
    32.     Ex0Init();
    33.      
    34.     while(1){
    35.         if(signal){//定时器1s到点，把signal置一，主程序发送速度
    36.             sprintf(speedMes,"speed:%d cm/s",speed);//串口数据的字符串拼装，speed是格子，每个格子1cm
    37.             SendString(speedMes);//速度发出去
    38.             signal = 0;//清0speed,下次由定时器1s后的中断处理中再置一
    39.         }
    40.     }
    41. }
    42.  
    43. void speedHandler() interrupt 0 //外部中断处理函数
    44. {
    45.     speedCnt++;//码盘转动了一个格子
    46. }

    支持蓝牙和oled屏幕显示测速

    除了以下几个文件要改，其他不需要修改，沿用上面的

    Oled.c文件

    1. #include "reg52.h"
    2. #include "intrins.h"
    3. #include "Oledfont.h"
    4.  
    5.  
    6. sbit scl = P1^2;
    7. sbit sda = P1^3;
    8.  
    9. void IIC_Start()
    10. {
    11.     scl = 0;
    12.     sda = 1;
    13.     scl = 1;
    14.     _nop_();
    15.     sda = 0;
    16.     _nop_();
    17. }
    18.  
    19. void IIC_Stop()
    20. {
    21.     scl = 0;
    22.     sda = 0;
    23.     scl = 1;
    24.     _nop_();
    25.     sda = 1;
    26.     _nop_();
    27. }
    28.  
    29. char IIC_ACK()
    30. {
    31.     char flag;
    32.     sda = 1;//就在时钟脉冲9期间释放数据线
    33.     _nop_();
    34.     scl = 1;
    35.     _nop_();
    36.     flag = sda;
    37.     _nop_();
    38.     scl = 0;
    39.     _nop_();
    40.      
    41.     return flag;
    42. }
    43.  
    44. void IIC_Send_Byte(char dataSend)
    45. {
    46.     int i;
    47.      
    48.     for(i = 0;i<8;i++){
    49.         scl = 0;//scl拉低，让sda做好数据准备
    50.         sda = dataSend & 0x80;//1000 0000获得dataSend的最高位，给sda
    51.         _nop_();//发送数据建立时间
    52.         scl = 1;//scl拉高开始发送
    53.         _nop_();//数据发送时间
    54.         scl = 0;//发送完毕拉低
    55.         _nop_();//
    56.         dataSend = dataSend << 1;
    57.     }
    58. }
    59.  
    60. void Oled_Write_Cmd(char dataCmd)
    61. {
    62.     //  1. start()
    63.     IIC_Start();
    64.     //      
    65.     //  2. 写入从机地址  b0111 1000 0x78
    66.     IIC_Send_Byte(0x78);
    67.     //  3. ACK
    68.     IIC_ACK();
    69.     //  4. cotrol byte: (0)(0)000000 写入命令   (0)(1)000000写入数据
    70.     IIC_Send_Byte(0x00);
    71.     //  5. ACK
    72.     IIC_ACK();
    73.     //6. 写入指令/数据
    74.     IIC_Send_Byte(dataCmd);
    75.     //7. ACK
    76.     IIC_ACK();
    77.     //8. STOP
    78.     IIC_Stop();
    79. }
    80.  
    81. void Oled_Write_Data(char dataData)
    82. {
    83.     //  1. start()
    84.     IIC_Start();
    85.     //      
    86.     //  2. 写入从机地址  b0111 1000 0x78
    87.     IIC_Send_Byte(0x78);
    88.     //  3. ACK
    89.     IIC_ACK();
    90.     //  4. cotrol byte: (0)(0)000000 写入命令   (0)(1)000000写入数据
    91.     IIC_Send_Byte(0x40);
    92.     //  5. ACK
    93.     IIC_ACK();
    94.     ///6. 写入指令/数据
    95.     IIC_Send_Byte(dataData);
    96.     //7. ACK
    97.     IIC_ACK();
    98.     //8. STOP
    99.     IIC_Stop();
    100. }
    101.  
    102.  
    103. void Oled_Init(void){
    104.     Oled_Write_Cmd(0xAE);//--display off
    105.     Oled_Write_Cmd(0x00);//---set low column address
    106.     Oled_Write_Cmd(0x10);//---set high column address
    107.     Oled_Write_Cmd(0x40);//--set start line address  
    108.     Oled_Write_Cmd(0xB0);//--set page address
    109.     Oled_Write_Cmd(0x81); // contract control
    110.     Oled_Write_Cmd(0xFF);//--128   
    111.     Oled_Write_Cmd(0xA1);//set segment remap 
    112.     Oled_Write_Cmd(0xA6);//--normal / reverse
    113.     Oled_Write_Cmd(0xA8);//--set multiplex ratio(1 to 64)
    114.     Oled_Write_Cmd(0x3F);//--1/32 duty
    115.     Oled_Write_Cmd(0xC8);//Com scan direction
    116.     Oled_Write_Cmd(0xD3);//-set display offset
    117.     Oled_Write_Cmd(0x00);//
    118.      
    119.     Oled_Write_Cmd(0xD5);//set osc division
    120.     Oled_Write_Cmd(0x80);//
    121.      
    122.     Oled_Write_Cmd(0xD8);//set area color mode off
    123.     Oled_Write_Cmd(0x05);//
    124.      
    125.     Oled_Write_Cmd(0xD9);//Set Pre-Charge Period
    126.     Oled_Write_Cmd(0xF1);//
    127.      
    128.     Oled_Write_Cmd(0xDA);//set com pin configuartion
    129.     Oled_Write_Cmd(0x12);//
    130.      
    131.     Oled_Write_Cmd(0xDB);//set Vcomh
    132.     Oled_Write_Cmd(0x30);//
    133.      
    134.     Oled_Write_Cmd(0x8D);//set charge pump enable
    135.     Oled_Write_Cmd(0x14);//
    136.      
    137.     Oled_Write_Cmd(0xAF);//--turn on oled panel     
    138. }
    139.  
    140. void Oled_Clear()
    141. {
    142.     unsigned char i,j; //-128 --- 127
    143.      
    144.     for(i=0;i<8;i++){
    145.         Oled_Write_Cmd(0xB0 + i);//page0--page7
    146.         //每个page从0列
    147.         Oled_Write_Cmd(0x00);
    148.         Oled_Write_Cmd(0x10);
    149.         //0到127列，依次写入0，每写入数据，列地址自动偏移
    150.         for(j = 0;j<128;j++){
    151.             Oled_Write_Data(0);
    152.         }
    153.     }
    154. }
    155.  
    156. void Oled_Show_Char(char row,char col,char oledChar){ //row*2-2
    157.     unsigned int  i;
    158.     Oled_Write_Cmd(0xb0+(row*2-2));                           //page 0
    159.     Oled_Write_Cmd(0x00+(col&0x0f));                          //low
    160.     Oled_Write_Cmd(0x10+(col>>4));                            //high  
    161.     for(i=((oledChar-32)*16);i<((oledChar-32)*16+8);i++){
    162.         Oled_Write_Data(F8X16[i]);                            //写数据oledTable1
    163.     }
    164.  
    165.     Oled_Write_Cmd(0xb0+(row*2-1));                           //page 1
    166.     Oled_Write_Cmd(0x00+(col&0x0f));                          //low
    167.     Oled_Write_Cmd(0x10+(col>>4));                            //high
    168.     for(i=((oledChar-32)*16+8);i<((oledChar-32)*16+8+8);i++){
    169.         Oled_Write_Data(F8X16[i]);                            //写数据oledTable1
    170.     }       
    171. }
    172.  
    173.  
    174. /******************************************************************************/
    175. // 函数名称：Oled_Show_Char 
    176. // 输入参数：oledChar 
    177. // 输出参数：无 
    178. // 函数功能：OLED显示单个字符
    179. /******************************************************************************/
    180. void Oled_Show_Str(char row,char col,char *str){
    181.     while(*str!=0){
    182.         Oled_Show_Char(row,col,*str);
    183.         str++;
    184.         col += 8;   
    185.     }       
    186. }

    Oled.h文件

    1. void Oled_Write_Cmd(char dataCmd);
    2. void Oled_Write_Data(char dataData);
    3. void Oled_Init(void);
    4. void Oled_Clear();
    5. void Oled_Show_Str(char row,char col,char *str);

    Oledfont.h

    1. const unsigned char code F8X16[]=     
    2. {
    3.   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,// 0
    4.   0x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x33,0x30,0x00,0x00,0x00,//! 1
    5.   0x00,0x10,0x0C,0x06,0x10,0x0C,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//" 2
    6.   0x40,0xC0,0x78,0x40,0xC0,0x78,0x40,0x00,0x04,0x3F,0x04,0x04,0x3F,0x04,0x04,0x00,//# 3
    7.   0x00,0x70,0x88,0xFC,0x08,0x30,0x00,0x00,0x00,0x18,0x20,0xFF,0x21,0x1E,0x00,0x00,//$ 4
    8.   0xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00,//% 5
    9.   0x00,0xF0,0x08,0x88,0x70,0x00,0x00,0x00,0x1E,0x21,0x23,0x24,0x19,0x27,0x21,0x10,//& 6
    10.   0x10,0x16,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//' 7
    11.   0x00,0x00,0x00,0xE0,0x18,0x04,0x02,0x00,0x00,0x00,0x00,0x07,0x18,0x20,0x40,0x00,//( 8
    12.   0x00,0x02,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x00,0x00,//) 9
    13.   0x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00,//* 10
    14.   0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00,//+ 11
    15.   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00,//, 12
    16.   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,//- 13
    17.   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00,//. 14
    18.   0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00,/// 15
    19.   0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00,//0 16
    20.   0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//1 17
    21.   0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00,//2 18
    22.   0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00,//3 19
    23.   0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00,//4 20
    24.   0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00,//5 21
    25.   0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00,//6 22
    26.   0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,//7 23
    27.   0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00,//8 24
    28.   0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00,//9 25
    29.   0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,//: 26
    30.   0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x60,0x00,0x00,0x00,0x00,//; 27
    31.   0x00,0x00,0x80,0x40,0x20,0x10,0x08,0x00,0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x00,//< 28
    32.   0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00,//= 29
    33.   0x00,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x00,//> 30
    34.   0x00,0x70,0x48,0x08,0x08,0x08,0xF0,0x00,0x00,0x00,0x00,0x30,0x36,0x01,0x00,0x00,//? 31
    35.   0xC0,0x30,0xC8,0x28,0xE8,0x10,0xE0,0x00,0x07,0x18,0x27,0x24,0x23,0x14,0x0B,0x00,//@ 32
    36.   0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20,//A 33
    37.   0x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00,//B 34
    38.   0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00,//C 35
    39.   0x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00,//D 36
    40.   0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00,//E 37
    41.   0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00,//F 38
    42.   0xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00,//G 39
    43.   0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20,//H 40
    44.   0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//I 41
    45.   0x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00,//J 42
    46.   0x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00,//K 43
    47.   0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00,//L 44
    48.   0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00,//M 45
    49.   0x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00,//N 46
    50.   0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00,//O 47
    51.   0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00,//P 48
    52.   0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00,//Q 49
    53.   0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20,//R 50
    54.   0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00,//S 51
    55.   0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//T 52
    56.   0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//U 53
    57.   0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00,//V 54
    58.   0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00,//W 55
    59.   0x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20,//X 56
    60.   0x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//Y 57
    61.   0x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00,//Z 58
    62.   0x00,0x00,0x00,0xFE,0x02,0x02,0x02,0x00,0x00,0x00,0x00,0x7F,0x40,0x40,0x40,0x00,//[ 59
    63.   0x00,0x0C,0x30,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x06,0x38,0xC0,0x00,//\ 60
    64.   0x00,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x7F,0x00,0x00,0x00,//] 61
    65.   0x00,0x00,0x04,0x02,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//^ 62
    66.   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,//_ 63
    67.   0x00,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//` 64
    68.   0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20,//a 65
    69.   0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00,//b 66
    70.   0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00,//c 67
    71.   0x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20,//d 68
    72.   0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00,//e 69
    73.   0x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//f 70
    74.   0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00,//g 71
    75.   0x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//h 72
    76.   0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//i 73
    77.   0x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,//j 74
    78.   0x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00,//k 75
    79.   0x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//l 76
    80.   0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F,//m 77
    81.   0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//n 78
    82.   0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//o 79
    83.   0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00,//p 80
    84.   0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80,//q 81
    85.   0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00,//r 82
    86.   0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00,//s 83
    87.   0x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00,//t 84
    88.   0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20,//u 85
    89.   0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00,//v 86
    90.   0x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00,//w 87
    91.   0x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00,//x 88
    92.   0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00,//y 89
    93.   0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00,//z 90
    94.   0x00,0x00,0x00,0x00,0x80,0x7C,0x02,0x02,0x00,0x00,0x00,0x00,0x00,0x3F,0x40,0x40,//{ 91
    95.   0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,//| 92
    96.   0x00,0x02,0x02,0x7C,0x80,0x00,0x00,0x00,0x00,0x40,0x40,0x3F,0x00,0x00,0x00,0x00,//} 93
    97.   0x00,0x06,0x01,0x01,0x02,0x02,0x04,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//~ 94
    98. };

    main.c文件

    1. #include "motor.h"
    2. #include "delay.h"
    3. #include "uart.h"
    4. #include "reg52.h"
    5. #include "time.h"
    6. #include "stdio.h"
    7. #include "Oled.h"
    8.  
    9. sbit speedIO = P3^2;//外部中断0
    10. unsigned int speedCnt = 0; //统计格子，脉冲次数
    11. extern unsigned int speed;//速度
    12. extern char signal; //主程序发速度数据的通知
    13. char speedMes[24];  //主程序发送速度数据的字符串缓冲区
    14.  
    15. void Ex0Init()
    16. {
    17.     EX0 = 1;//允许中断
    18.     //EA = 1;在串口初始化函数中已经打开了总中断
    19.     IT0 = 1;//外部中断的下降沿触发
    20. }
    21.  
    22. void main()
    23. {
    24.     Time0Init();//定时器0初始化
    25.     UartInit();//串口相关初始化
    26.     //外部中断初始化
    27.     Ex0Init();
    28.     Oled_Init();
    29.     Oled_Clear();
    30.     while(1){
    31.         if(signal){//定时器1s到点，把signal置一，主程序发送速度
    32.             sprintf(speedMes,"speed:%d cm/s",speed);//串口数据的字符串拼装，speed是格子，每个格子1cm
    33.             SendString(speedMes);//速度发出去
    34.          
    35.             signal = 0;//清0speed,下次由定时器1s后的中断处理中再置一
    36.         }
    37.         Oled_Show_Str(2,2,speedMes);
    38.     }
    39. }
    40.  
    41. void speedHandler() interrupt 0 //外部中断处理函数
    42. {
    43.     speedCnt++;//码盘转动了一个格子
    44. }

    wifi模块测速

    利用ESP8266模块来连接网络，模块可看(43条消息) C51之ESP-01s_菜鸟成长之路丶的博客-CSDN博客

    除了以下要修改的代码，其余文件需补充第一个案例的完整代码才能运行

    代码：

    esp8266.c文件

    1. #include "uart.h"
    2.  
    3. //1 工作在路由模式
    4. code char LYMO[] = "AT+CWMODE=2\r\n";
    5. //2 使能多链接
    6. code char DLJ[] = "AT+CIPMUX=1\r\n"; 
    7. //3 建立TCPServer
    8. code char JLFW[] = "AT+CIPSERVER=1\r\n"; // default port = 333 
    9.  
    10.  
    11.  
    12. char AT_OK_Flag = 0;                //OK返回值的标志位
    13. char Client_Connect_Flag = 0;
    14.  
    15. void initWifi_AP()
    16. {
    17.     SendString(LYMO);
    18.     while(!AT_OK_Flag);
    19.     AT_OK_Flag = 0;
    20.     SendString(DLJ);
    21.     while(!AT_OK_Flag);
    22.     AT_OK_Flag = 0;
    23. }
    24.  
    25. void waitConnect()
    26. {
    27.     SendString(JLFW);
    28.     while(!Client_Connect_Flag);
    29.     AT_OK_Flag = 0; 
    30. }

    esp8266.h文件

    1. void initWifi_AP();
    2. void waitConnect();

    main.c文件

    1.  
    2. #include "motor.h"
    3. #include "delay.h"
    4. #include "uart.h"
    5. #include "reg52.h"
    6. #include "time.h"
    7. #include "stdio.h"
    8. #include "Oled.h"
    9. #include "esp8266.h"
    10.  
    11. sbit speedIO = P3^2;//外部中断0
    12. unsigned int speedCnt = 0; //统计格子，脉冲次数
    13. extern unsigned int speed;//速度
    14. extern char signal; //主程序发速度数据的通知
    15. char speedMes[24];  //主程序发送速度数据的字符串缓冲区
    16. //发送数据
    17. char FSSJ[] = "AT+CIPSEND=0,5\r\n";
    18.  
    19. void Ex0Init()
    20. {
    21.     EX0 = 1;//允许中断
    22.     //EA = 1;在串口初始化函数中已经打开了总中断
    23.     IT0 = 1;//外部中断的下降沿触发
    24. }
    25.  
    26. void main()
    27. {
    28.     Time0Init();//定时器0初始化
    29.     UartInit();//串口相关初始化
    30.     Delay1000ms();//给espwifi模块上电时间
    31.      
    32.     initWifi_AP(); //初始化wifi工作在ap模式
    33.     waitConnect(); //等待客户端的连接
    34.      
    35.     //外部中断初始化
    36.     Ex0Init();
    37.     Oled_Init();
    38.     Oled_Clear();
    39.     while(1){
    40.         if(signal){//定时器1s到点，把signal置一，主程序发送速度
    41.             SendString(FSSJ);
    42.             Delay1000ms();
    43.             sprintf(speedMes,"%dcms",speed);//串口数据的字符串拼装，speed是格子，每个格子1cm
    44.             SendString(speedMes);//速度发出去
    45.          
    46.             signal = 0;//清0speed,下次由定时器1s后的中断处理中再置一
    47.         }
    48.         Oled_Show_Str(2,2,speedMes);
    49.     }
    50. }
    51.  
    52. void speedHandler() interrupt 0 //外部中断处理函数
    53. {
    54.     speedCnt++;//码盘转动了一个格子
    55. }

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  • 原文地址：https://blog.csdn.net/weixin_49001476/article/details/127354730