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74LS165并行输入串行输出，判断高电平数量并且记录步进电机运行时间

WMO • 2023-5-5 • CMS教程 • 阅读 7

74LS165并行输入串行输出，判断高电平数量并且记录步进电机运行时间,第1张

74LS165，74ls165是八位并行输入/串行输出移位寄存器当1脚为低电平时,将输入数据D0 - D7存入Q0 - Q7,数据存入后,使1脚为高电平,DS10脚=0, /CE15脚=0, CP2脚的8个时钟脉冲就能将并行数据从

Q7=9脚,串行移出 /Q7=7脚移出的数据是反相的

74LS165也 是位串行移位寄存器，时钟受控时，数据从QA向QH转移。八个单独的直接数据输入端使对每一 级的并行输入存取得以实现，直接数据输入端由移位/负载输入端的低电平赋能。这种寄存器也具有门控时 钟输入端和第八位互补输出端的特点。为使传输线效应变得最小，输入都是二极管钳位，因而简化了系统 设计。

时钟控制是通过一个 2 输入正或非门来实现的，这使一个输入羰可用作时钟禁止功能输入端。保持两 个时钟输入端的任何一个为高电平，则禁止时钟控制。保持任何一个时钟输入端为低电平，而移位/负载输 入端为高电平，则使另一个时钟输入端赋能，仅在这个时钟输入端为高电平时，时钟禁止输入端才应被变 到高电平，只要移位/负载输入为高电平就禁止并行输入。并行输入端的数据在移位/负载输入端从高电平 到低电平跃变时直接输入寄存器，而与时钟、时钟禁止或串行输入端三者的电平无关

要等到所有的数据都输入了才会一位一位的串行输出哈，在并行和串行输出端只有一个时钟有效，如果并行输出时钟有效，串行输出端就没有输出了！

你可以在>

可以利用print函数或者sprint函数

程序如下：

#include "reg52h" //此头文件中定义了单片机的一些特殊功能寄存器

typedef unsigned int u16;

typedef unsigned char u8;

void UsartInit()

{

SCON=0X50; //0101 000设置串行口控制寄存器sm0,sm1为01，即为工作方式1

TMOD=0X20; //设置计数器

PCON=0X80; //定义PCON寄存器中的SMOD=1,波特率加倍

TH1=0XF3; //计数器初始值设置，注意波特率是4800的,当然大家可以改

TL1=0XF3;

EA=1; //打开总中断 根据需要

ES=1; //打开中断允许中的串行口中断允许

TR1=1; //打开计数器

TI = 1；//如果使用print函数，TI一定要是1 否则 删掉该句

}

void main()

{

u16 Val;

UsartInit();

while(1)

{ Val = GetSensor();

printf("%d",Val;) //printf中一定要用u16的 不能用u8 这样就直接将数字格式化为ascii

}

}

主要程序语句如下：

SM1=0; SM0=0;//串口工作方式0，移位寄存器方式

TMOD=0X20;//定时器1工作方式2，自动重装模式

TH1=//装入初值

TL1=//装入初值

TR1=1;//启动定时器

while(1)

{

a=//小数点的代码是 0x80或0x7f

TI=0;

sbuf=a；//发送

while(!TI)；

P3^4=1;//假设是共阳数码管

delay_ms(5);

P3^4=0；

a=//个位数的代码，或者查表

TI=0;

sbuf=a;//发送

while(!TI)；

P3^5=1;

delay_ms(5);

P3^5=0;

}

//LCD12864字库系列(控制器ST7920A),单片机:89S52,晶振:12M,

//串口连接 与 并口连接 （ 串口时 屏蔽 并行模块）

//并行连接方式,P20-RS,P21-RW,P22-E

#include<reg52h>

#include <intrinsh>

sbit RS=P3^2; //串口时为CS

sbit RW=P3^1; //串口为SID

sbit E=P3^0; //串口为时钟SCLK

sbit stop=P2^2;

sbit PSB=P3^4;

sbit REST=P3^3;

//以下是用<at89x51h>头文件的定义

/

#define RS P2_0

#define RW P2_1 //定义引脚

#define E P2_2

#define PSB P2_3

#define REST P2_4

#define Data P1

#include<at89x51h>

/

#define BF 0x80 //用于检测LCM状态字中的Busy标识

typedef unsigned int Uint;

typedef unsigned char Uchar;

//字符串例子

//"F1--English",也可以往里面写入汉字码,一个汉字由两个码组成

const Uchar F1English[]={0x46,0x31,0x2d,0x2d,0x45,0x6e,0x67,0x6c,0x69,0x73,0x68,0x00};

const Uchar lengthF1=6; //字符串长度

//汉字,直接可以写入字形

unsigned char code uctech[] = {"有限公司"};

const Uchar lengthCF3=8;

Uchar code TAB1[]={

/-- 调入了一幅图像：D:\公司的文件\程序\未命名11bmp --/

/-- 宽度x高度=128x64 --/

0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x05,0xAE,0x90,0x00,0x00,0x00,0x00,0x00,

0x95,0x55,0x48,0x80,0x00,0x00,0x00,0x00,

0x2B,0x55,0x00,0x00,0x00,0x00,0x00,0x00,

0xA8,0x00,0x22,0x15,0x20,0x00,0x00,0x00,

0x97,0xFB,0x00,0x00,0x00,0x00,0x00,0x00,

0x45,0x55,0x08,0xA0,0x00,0x00,0x00,0x0A,

0x6F,0xF4,0x00,0x00,0x00,0x00,0x00,0x00,

0xB2,0x80,0x40,0x00,0x04,0x40,0x00,0x00,

0xBA,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,

0x4D,0x55,0x15,0x15,0x20,0x00,0x00,0x95,

0xD5,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0xFF,0xE8,0x40,0x40,0x00,0x00,0x00,0x4A,

0xAA,0x80,0x00,0x00,0x00,0x00,0x00,0x00,

0xFF,0xFF,0x2A,0x00,0x40,0x00,0x00,0x15,

0x54,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0xFF,0xFD,0xD0,0xAA,0x01,0x00,0x00,0x25,

0x20,0x10,0x00,0x00,0x00,0x00,0x00,0x00,

0xFF,0xFF,0xB6,0x00,0x10,0x00,0x01,0x4A,

0x49,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0xFF,0xFF,0xFD,0xE8,0x40,0x00,0x00,0x11,

0x00,0x24,0x84,0x00,0x00,0x00,0x00,0x00,

0xAB,0xFF,0xFF,0x55,0x00,0x00,0x00,0x24,

0x02,0x49,0x5E,0xA0,0x00,0x00,0x00,0x00,

0x84,0xBF,0xFF,0xF4,0x88,0x00,0x00,0x00,

0x10,0x05,0xFF,0xF4,0x00,0x00,0x00,0x00,

0x29,0x0B,0xFF,0xFA,0x20,0x00,0x00,0x00,

0x02,0xBF,0xFF,0xFC,0x00,0x00,0x00,0x00,

0x44,0xA0,0x57,0xFD,0x80,0x00,0x00,0x00,

0x08,0x5F,0xFF,0xFF,0x80,0x00,0x00,0x00,

0x91,0x0A,0xAA,0xF6,0x50,0x00,0x00,0x00,

0x41,0xFF,0xFF,0xFF,0xC0,0x00,0x00,0x00,

0x44,0xA0,0x01,0x1B,0x84,0x00,0x00,0x00,

0x26,0xFF,0xFF,0xFF,0x90,0x00,0x00,0x00,

0x11,0x0A,0xAA,0x6D,0x68,0x00,0x00,0x00,

0x0B,0xFB,0xFF,0xEF,0xE0,0x00,0x00,0x00,

0xC4,0xA0,0x01,0x02,0x80,0x00,0x00,0x00,

0x43,0xF1,0xFE,0x63,0xF0,0x00,0x00,0x00,

0x15,0x55,0x54,0x55,0x6A,0x00,0x00,0x00,

0x9F,0xE3,0xFC,0x87,0x38,0x00,0x00,0x00,

0xCA,0xAB,0x91,0x00,0x90,0x00,0x00,0x00,

0x07,0xC1,0xFA,0x2A,0x80,0x00,0x00,0x00,

0x25,0xFF,0xFE,0x95,0x2A,0x00,0x00,0x00,

0x2F,0x13,0xFE,0xFC,0x10,0x00,0x00,0x00,

0x95,0xFF,0xFF,0xC0,0x50,0x00,0x00,0x00,

0x0F,0x41,0xFF,0xF3,0x80,0x00,0x00,0x00,

0x4F,0xFF,0xFF,0xF9,0x2A,0x00,0x00,0x00,

0x9F,0x08,0xFF,0xD4,0x00,0x00,0x00,0x00,

0xB3,0xFF,0xFF,0xFE,0x54,0x80,0x00,0x00,

0x1E,0xA0,0x7F,0xA0,0x00,0x00,0x00,0x00,

0x5F,0xFE,0x7F,0xFE,0xAA,0x00,0x00,0x00,

0x5F,0x57,0xFE,0x00,0x00,0x00,0x00,0x00,

0xAF,0xFD,0x7F,0xFF,0x94,0x80,0x00,0x00,

0x1F,0xFE,0xE8,0x00,0x00,0x00,0x00,0x00,

0x7F,0xFA,0x7F,0x5F,0xCA,0x00,0x00,0x00,

0x3F,0x55,0x00,0x00,0x00,0x00,0x00,0x00,

0xAF,0xF1,0x7F,0xDE,0xF5,0x40,0x00,0x00,

0x1A,0xA0,0x80,0x00,0x00,0x00,0x00,0x00,

0xDF,0xF2,0x3F,0xFC,0xC2,0x00,0x00,0x00,

0x50,0x08,0x00,0x00,0x00,0x00,0x00,0x00,

0x2F,0xFA,0xBF,0xFF,0xF4,0xA0,0x00,0x00,

0x05,0x42,0x00,0x00,0x00,0x00,0x00,0x00,

0x97,0xFE,0x3F,0xFF,0xE3,0x00,0x00,0x00,

0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x68,0xFF,0xDF,0xD5,0x78,0x40,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x07,0x5F,0xFF,0x48,0x02,0x80,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0xD0,0xAA,0xF4,0xA0,0xAA,0x40,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x0A,0x45,0x09,0x05,0x11,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0xA1,0x28,0xA0,0x00,0x44,0x40,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x08,0x42,0x04,0x52,0x12,0x80,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0xA5,0x09,0x51,0x00,0x48,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x50,0x04,0x4A,0x12,0x80,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0xAA,0x05,0x50,0x21,0x48,0x20,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x90,0x02,0x84,0x12,0x80,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0xD4,0x05,0x48,0x10,0x48,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x81,0x20,0x00,0x02,0x02,0x80,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0xA4,0x84,0x92,0x48,0x94,0x40,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x48,0x10,0x00,0x00,0x21,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00

};

//这个是在串口时指令和数据之间的延时

/

void delay10US(Uchar x)

{

Uchar k;

for(k=0;k<x;k++);

}

/

const Uchar delay=250; //延时时间常数

static void Wait1ms(void)//延迟1 ms

{

Uchar cnt=0;

while (cnt<delay) cnt++;

}

//延迟n ms

void WaitNms(int n)

{

Uchar i;

for(i=1;i<=n;i++)

Wait1ms();

}

void stopint(void)//中断程序

{

if(stop==0)

while(1);

}

////

//以下是并口时才开的

//读忙标志,

void RDBF(void)

{

Uchar temp;

RS=0; // RS=0

RW=1; // RW=1

while(1)

{

P1=0xFF; //数据线为输入

E=1;

temp=P1;

E=0; // E=0

if ((temp&0x80)==0) break;

}

}

//写数据到指令寄存器

void WRCommand(Uchar comm)

{

RDBF();

RW=0;

P1=comm;

E=1;

E=0;

}

//写数据到数据寄存器

void WRData(Uchar TEMP)

{

RDBF();

RS=1;

RW=0;

P1=TEMP;

E=1;

E=0;

stopint();

}

/////////////////////////////////////////////////////////////////////////////////

//以下是串口时开的读写时序

/void SendByteLCD(Uchar WLCDData)

{

Uchar i;

for(i=0;i<8;i++)

{

if((WLCDData<<i)&0x80)RW=1;

else RW=0;

E=0;

E=1 ;

}

}

SPIWR(Uchar Wdata,Uchar WRS)

{

SendByteLCD(0xf8+(WRS<<1));

SendByteLCD(Wdata&0xf0);

SendByteLCD((Wdata<<4)&0xf0);

}

void WRCommand(Uchar CMD)

{

RS=0;

RS=1;

SPIWR(CMD,0);

delay10US(90);//89S52来模拟串行通信,所以,加上89S52的延时,

}

void WRData(Uchar Data)

{

RS=0;

RS=1;

SPIWR(Data,1);

}

/

//

//初始化LCD-8位接口

void LCDInit(void)

{ // PSB=0; //串口

PSB=1;//并口时选这个,上一行取消

REST=1;

REST=0;

REST=1;

WRCommand(0x30); //基本指令集,8位并行

WRCommand(0x06); //启始点设定：光标右移

WRCommand(0x01); //清除显示DDRAM

WRCommand(0x0C); //显示状态开关：整体显示开，光标显示关，光标显示反白关

WRCommand(0x02); //地址归零

}

//显示数组字符串(显示半宽字型168点阵)

void ShowQQChar(Uchar addr,Uchar english,Uchar count)

{

Uchar i;

WRCommand(addr); //设定DDRAM地址

for(i=0;i<count;)

{

WRData(english[i2]);

WRData(english[i2+1]);

i++;

}

}

//显示连续字串(半宽字符)

void ShowNUMChar(Uchar addr,Uchar i,Uchar count)

{

Uchar j;

for(j=0;j<count;)

{

WRCommand(addr); //设定DDRAM地址

WRData(i+j);

j++;

WRData(i+j);

addr++;

j++;

}

}

//自定义字符写入CGRAM

void WRCGRAM(Uchar data1,Uchar data2,Uchar addr)

{

Uchar i;

for(i=0;i<16;)

{

WRCommand(addr+i); //设定CGRAM地址

WRData(data1);

WRData(data1);

i++;

WRCommand(addr+i); //设定CGRAM地址

WRData(data2);

WRData(data2);

i++;

}

}

//显示自定义的字符,并把这个字符填满全屏1616

void ShowCGChar(Uchar addr,Uchar i)

{

Uchar j;

for(j=0;j<0x20;)

{

WRCommand(addr+j); //设定DDRAM地址

WRData(0x00);

WRData(i);

j++;

}

}

void CLEARGDRAM(void)

{

Uchar j;

Uchar i;

WRCommand(0x34);

WRCommand(0x36);

for(j=0;j<32;j++)

{

WRCommand(0x80+j);

WRCommand(0x80);//X坐标

for(i=0;i<32;i++)//

{

WRData(0x00);

}

}

}

//写入GDRAM 绘图,Y是Y绘图坐标,2个字节一行,CLONG是图形长度,以字节

//为单位;HIGHT是图形高度,TAB是图形数据表12864M的图形显示是相当于25632点阵

//由两屏12832上下两屏组成，同一行的下屏的头地址紧接上屏的未地址。

//绘图在串口输入时,会比在并口下的输入要慢一些

void WRGDRAM(Uchar Y1,Uchar clong,Uchar hight,Uchar TAB1)

{

Uint k;

Uchar j;

Uchar i;

WRCommand(0x34);

WRCommand(0x36);

for(j=0;j<hight;j++)//32

{ //先上半屏

WRCommand(Y1+j); //Y总坐标,即第几行

WRCommand(0x80);//X坐标，即横数第几个字节开始写起

for(i=0;i<clong;i++)//

{

WRData(TAB1[clongj+i]);

}

//后下半屏

for(k=0;k<clong;k++)//

{

WRData(TAB1[clong(j+hight)+k]);

}

}

}

void menu(void)

{

LCDInit();

ShowNUMChar(0x80,0x01,0x0f);//显示半宽特殊符号

ShowNUMChar(0x90,0x30,0x0f);//显示半宽0~数字标点

ShowNUMChar(0x88,0x41,0x0f);//显示半宽A~P大写

ShowNUMChar(0x98,0x61,0x0f);//显示半宽a~p小写

WaitNms(250); //等待时间

WaitNms(250); //等待时间

stopint();

WRCommand(0x01); //清除显示DDRAM

WRCGRAM(0xff,0x00,0x40);//写入横

WRCGRAM(0x00,0xff,0x50);//写入横2

WRCGRAM(0xaa,0xaa,0x60);//写入竖

WRCGRAM(0x55,0x55,0x70);//写入竖2

ShowCGChar(0x80,0x00);//显示横并填满

WaitNms(250); //等待时间

WaitNms(250); //等待时间

stopint();

WRCommand(0x01); //清除显示DDRAM

ShowCGChar(0x80,02);//显示横2并填满

WaitNms(250); //等待时间

WaitNms(250); //等待时间

stopint();

WRCommand(0x01); //清除显示DDRAM

ShowCGChar(0x80,04);//显示竖并填满

WaitNms(250); //等待时间

WaitNms(250); //等待时间

stopint();

WRCommand(0x01); //清除显示DDRAM

ShowCGChar(0x80,06);//显示竖2并填满

WaitNms(250); //等待时间

WaitNms(250); //等待时间

stopint();

WRCommand(0x01); //清除显示DDRAM

WRCGRAM(0x00,0x00,0x40);//清CGRAM1

WRCGRAM(0x00,0x00,0x50);//清CGRAM2

WRCGRAM(0xaa,0x55,0x40);//写入点

WRCGRAM(0x55,0xaa,0x50);//写入点2

ShowCGChar(0x80,00);//显示点并填满

WaitNms(250); //等待时间

WaitNms(250); //等待时间

stopint();

WRCommand(0x01); //清除显示DDRAM

ShowCGChar(0x80,02);//显示点2并填满

WaitNms(250); //等待时间

WaitNms(250); //等待时间

stopint();

WRCommand(0x01); //清除显示DDRAM

ShowQQChar(0x80,uctech,lengthCF3);//显示'有限公司',以下共四行

ShowQQChar(0x90,uctech,lengthCF3);

ShowQQChar(0x88,uctech,lengthCF3);

ShowQQChar(0x98,uctech,lengthCF3);

WaitNms(250); //等待时间

WaitNms(250); //等待时间

stopint();

WRCommand(0x01); //清除显示DDRAM

}

void menu2(void)

{ CLEARGDRAM();

WRGDRAM(0x80,16,32,TAB1);

WaitNms(250); //等待时间

WaitNms(250); //等待时间

stopint();

}

//主函数

void main(void)

{

menu();//初始化及半宽字符和点横竖汉字扫描

menu2();//绘图显示

for(;;)

{;}

}

以上就是关于74LS165并行输入串行输出，判断高电平数量并且记录步进电机运行时间全部的内容，包括:74LS165并行输入串行输出，判断高电平数量并且记录步进电机运行时间、74HC595是不是串行移入之后马上串行输出如果并行输出时钟有效，串行输出端还有输出吗、求一段STC89C52单片机将数值通过串口输出的代码等相关内容解答，如果想了解更多相关内容，可以关注我们，你们的支持是我们更新的动力！

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原文地址: http://outofmemory.cn/zz/10092709.html

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