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/*-----------------------------------------------
名稱(chēng)：LCD1602
編寫(xiě)：shifang
日期：2019-9-3
修改：無(wú)
內(nèi)容：通過(guò)標(biāo)準(zhǔn)程序動(dòng)態(tài)顯示字符
引腳定義如下：1-VSS 2-VDD 3-V0 4-RS 5-R/W 6-E 7-14 DB0-DB7 15-BLA 16-BLK
------------------------------------------------*/
#include<reg52.h> //包含頭文件，一般情況不需要改動(dòng)，頭文件包含特殊功能寄存器的定義
#include<intrins.h>
#define _Nop() _nop_() //定義空指令
bit ack; //應(yīng)答標(biāo)志位
bit flag_dis=0;
sbit SDA=P2^1;
sbit SCL=P2^0;
#define AddWr 0x90 //寫(xiě)數(shù)據(jù)地址
#define AddRd 0x91 //讀數(shù)據(jù)地址
unsigned char ReadADC(unsigned char Chl);
bit WriteDAC(unsigned char dat);
//--定義全局變量--//
unsigned char code table[] ={"Welcome use: 000 "};
unsigned char code table1[]={"SIN:0000.0Hz FAG "};
unsigned int dis,deg; //{"D:0 Voltage:0.00"};
sbit RS = P2^4; //定義端口
sbit RW = P2^5;
sbit EN = P2^6;
sbit out = P2^7;
sbit k1 = P3^5;
sbit k2 = P3^6;
sbit k3 = P3^7;
sbit out2 =P1^7;
sbit buz = P1^2;
unsigned int fh=150,fh2=100; //初始頻率為150Hz
unsigned int t_10us=0,pinlv,t100us,t100us2;
#define RS_CLR RS=0
#define RS_SET RS=1
#define RW_CLR RW=0
#define RW_SET RW=1
#define EN_CLR EN=0
#define EN_SET EN=1
#define DataPort P0
unsigned char code table2[256] ={
0x80, 0x83, 0x86, 0x89, 0x8c, 0x8f, 0x92, 0x95, 0x98, 0x9c, 0x9f,
0xa2, 0xa5, 0xa8, 0xab, 0xae, 0xb0, 0xb3, 0xb6, 0xb9, 0xbc, 0xbf,
0xc1, 0xc4, 0xc7, 0xc9, 0xcc, 0xce, 0xd1, 0xd3, 0xd5, 0xd8, 0xda,
0xdc, 0xde, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xed, 0xef,
0xf0, 0xf2, 0xf3, 0xf4, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc,
0xfc, 0xfd, 0xfe, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfd, 0xfc, 0xfc, 0xfb, 0xfa,
0xf9, 0xf8, 0xf7, 0xf6, 0xf5, 0xf3, 0xf2, 0xf0, 0xef, 0xed, 0xec,
0xea, 0xe8, 0xe6, 0xe4, 0xe3, 0xe1, 0xde, 0xdc, 0xda, 0xd8, 0xd6,
0xd3, 0xd1, 0xce, 0xcc, 0xc9, 0xc7, 0xc4, 0xc1, 0xbf, 0xbc, 0xb9,
0xb6, 0xb4, 0xb1, 0xae, 0xab, 0xa8, 0xa5, 0xa2, 0x9f, 0x9c, 0x99,
0x96, 0x92, 0x8f, 0x8c, 0x89, 0x86, 0x83, 0x80, 0x7d, 0x79, 0x76,
0x73, 0x70, 0x6d, 0x6a, 0x67, 0x64, 0x61, 0x5e, 0x5b, 0x58, 0x55,
0x52, 0x4f, 0x4c, 0x49, 0x46, 0x43, 0x41, 0x3e, 0x3b, 0x39, 0x36,
0x33, 0x31, 0x2e, 0x2c, 0x2a, 0x27, 0x25, 0x23, 0x21, 0x1f, 0x1d,
0x1b, 0x19, 0x17, 0x15, 0x14, 0x12, 0x10, 0x0f, 0x0d, 0x0c, 0x0b,
0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x03, 0x02, 0x01, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x01, 0x02, 0x03, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
0x0a, 0x0c, 0x0d, 0x0e, 0x10, 0x12, 0x13, 0x15, 0x17, 0x18, 0x1a,
0x1c, 0x1e, 0x20, 0x23, 0x25, 0x27, 0x29, 0x2c, 0x2e, 0x30, 0x33,
0x35, 0x38, 0x3b, 0x3d, 0x40, 0x43, 0x46, 0x48, 0x4b, 0x4e, 0x51,
0x54, 0x57, 0x5a, 0x5d, 0x60, 0x63, 0x66, 0x69, 0x6c, 0x6f, 0x73,
0x76, 0x79, 0x7c,
};
/*------------------------------------------------
uS延時(shí)函數(shù)，含有輸入?yún)?shù) unsigned char t，無(wú)返回值
unsigned char 是定義無(wú)符號(hào)字符變量，其值的范圍是
0~255 這里使用晶振12M，精確延時(shí)請(qǐng)使用匯編,大致延時(shí)
長(zhǎng)度如下 T=tx2+5 uS
------------------------------------------------*/
void DelayUs2x(unsigned int t)
{
while(--t);
}
/*------------------------------------------------
mS延時(shí)函數(shù)，含有輸入?yún)?shù) unsigned char t，無(wú)返回值
unsigned char 是定義無(wú)符號(hào)字符變量，其值的范圍是
0~255 這里使用晶振12M，精確延時(shí)請(qǐng)使用匯編
------------------------------------------------*/
void DelayMs(unsigned int t)
{
while(t--)
{
//大致延時(shí)1mS
DelayUs2x(245);
DelayUs2x(245);
}
}
/*------------------------------------------------
啟動(dòng)總線(xiàn)
------------------------------------------------*/
void Start_I2c()
{
SDA=1; //發(fā)送起始條件的數(shù)據(jù)信號(hào)
_Nop();
SCL=1;
_Nop(); //起始條件建立時(shí)間大于4.7us,延時(shí)
_Nop();
_Nop();
_Nop();
SDA=0; //發(fā)送起始信號(hào)
_Nop(); //起始條件鎖定時(shí)間大于4μ
_Nop();
_Nop();
_Nop();
SCL=0; //鉗住I2C總線(xiàn)，準(zhǔn)備發(fā)送或接收數(shù)據(jù)
_Nop();
_Nop();
}
/*------------------------------------------------
結(jié)束總線(xiàn)
------------------------------------------------*/
void Stop_I2c()
{
SDA=0; //發(fā)送結(jié)束條件的數(shù)據(jù)信號(hào)
_Nop(); //發(fā)送結(jié)束條件的時(shí)鐘信號(hào)
SCL=1; //結(jié)束條件建立時(shí)間大于4μ
/* _Nop();
_Nop();
_Nop();
_Nop();*/
DelayUs2x(1);
SDA=1; //發(fā)送I2C總線(xiàn)結(jié)束信號(hào)
/* _Nop();
_Nop();
_Nop();*/
}
/*----------------------------------------------------------------
字節(jié)數(shù)據(jù)傳送函數(shù)
函數(shù)原型: void SendByte(unsigned char c);
功能: 將數(shù)據(jù)c發(fā)送出去,可以是地址,也可以是數(shù)據(jù),發(fā)完后等待應(yīng)答,并對(duì)
此狀態(tài)位進(jìn)行操作.(不應(yīng)答或非應(yīng)答都使ack=0 假)
發(fā)送數(shù)據(jù)正常，ack=1; ack=0表示被控器無(wú)應(yīng)答或損壞。
------------------------------------------------------------------*/
void SendByte(unsigned char c)
{
unsigned char BitCnt;
for(BitCnt=0;BitCnt<8;BitCnt++) //要傳送的數(shù)據(jù)長(zhǎng)度為8位
{
if((c<<BitCnt)&0x80)SDA=1; //判斷發(fā)送位
else SDA=0;
_Nop();
SCL=1; //置時(shí)鐘線(xiàn)為高，通知被控器開(kāi)始接收數(shù)據(jù)位
DelayUs2x(2);
/* _Nop(); //保證時(shí)鐘高電平周期大于4μ
_Nop();
_Nop();
_Nop(); */
SCL=0;
}
// _Nop();
_Nop();
SDA=1; //8位發(fā)送完后釋放數(shù)據(jù)線(xiàn)，準(zhǔn)備接收應(yīng)答位
// _Nop();
_Nop();
SCL=1;
DelayUs2x(1);
/* _Nop();
_Nop();
_Nop();
if(SDA==1)ack=0;
else ack=1; */ //判斷是否接收到應(yīng)答信號(hào)
SCL=0;
// _Nop();
}
/*----------------------------------------------------------------
字節(jié)數(shù)據(jù)傳送函數(shù)
函數(shù)原型: unsigned char RcvByte();
功能: 用來(lái)接收從器件傳來(lái)的數(shù)據(jù),并判斷總線(xiàn)錯(cuò)誤(不發(fā)應(yīng)答信號(hào))，
發(fā)完后請(qǐng)用應(yīng)答函數(shù)。
------------------------------------------------------------------*/
unsigned char RcvByte()
{
unsigned char retc;
unsigned char BitCnt;
retc=0;
SDA=1; //置數(shù)據(jù)線(xiàn)為輸入方式
for(BitCnt=0;BitCnt<8;BitCnt++)
{
_Nop();
SCL=0; //置時(shí)鐘線(xiàn)為低，準(zhǔn)備接收數(shù)據(jù)位
DelayUs2x(2);
/* _Nop();
_Nop(); //時(shí)鐘低電平周期大于4.7us
_Nop();
_Nop();
_Nop();*/
SCL=1; //置時(shí)鐘線(xiàn)為高使數(shù)據(jù)線(xiàn)上數(shù)據(jù)有效
// _Nop();
// _Nop();
retc=retc<<1;
if(SDA==1)retc=retc+1; //讀數(shù)據(jù)位,接收的數(shù)據(jù)位放入retc中
// _Nop();
// _Nop();
}
SCL=0;
return(retc);
}
/*----------------------------------------------------------------
非應(yīng)答子函數(shù)
原型: void NoAck_I2c(void);
----------------------------------------------------------------*/
void NoAck_I2c(void)
{
SDA=1;
DelayUs2x(1);
/* _Nop();
_Nop();
_Nop(); */
SCL=1;
/*_Nop();
_Nop(); //時(shí)鐘低電平周期大于4μ
_Nop();
_Nop(); */
DelayUs2x(1);
SCL=0; //清時(shí)鐘線(xiàn)，鉗住I2C總線(xiàn)以便繼續(xù)接收
// _Nop();
//_Nop();
}
/*------------------------------------------------
寫(xiě)入命令函數(shù)
------------------------------------------------*/
void LCD_Write_Com(unsigned char com)
{
// while(LCD_Check_Busy()); //忙則等待
DelayMs(5);
RS_CLR;
RW_CLR;
EN_SET;
DataPort= com;
_nop_();
EN_CLR;
}
/*------------------------------------------------
寫(xiě)入數(shù)據(jù)函數(shù)
------------------------------------------------*/
void LCD_Write_Data(unsigned char Data)
{
//while(LCD_Check_Busy()); //忙則等待
DelayMs(5);
RS_SET;
RW_CLR;
EN_SET;
DataPort= Data;
_nop_();
EN_CLR;
}
/*------------------------------------------------
清屏函數(shù)
------------------------------------------------*/
void LCD_Clear(void)
{
LCD_Write_Com(0x01);
DelayMs(5);
}
/*------------------------------------------------
初始化函數(shù)
------------------------------------------------*/
void LCD_Init(void)
{
// LCD_Write_Com(0x38); /*顯示模式設(shè)置*/
// DelayMs(5);
// LCD_Write_Com(0x38);
// DelayMs(5);
LCD_Write_Com(0x38);
DelayMs(5);
LCD_Write_Com(0x38);
LCD_Write_Com(0x08); /*顯示關(guān)閉*/
LCD_Write_Com(0x01); /*顯示清屏*/
LCD_Write_Com(0x06); /*顯示光標(biāo)移動(dòng)設(shè)置*/
DelayMs(5);
LCD_Write_Com(0x0C); /*顯示開(kāi)及光標(biāo)設(shè)置*/
}
/*------------------------------------------------
讀AD轉(zhuǎn)值程序
輸入?yún)?shù) Chl 表示需要轉(zhuǎn)換的通道，范圍從0-3
返回值范圍0-255
------------------------------------------------*/
/*unsigned char ReadADC(unsigned char Chl)
{
unsigned char Val;
Start_I2c(); //啟動(dòng)總線(xiàn)
SendByte(AddWr); //發(fā)送器件地址
if(ack==0)return(0);
SendByte(0x40|Chl); //發(fā)送器件子地址
if(ack==0)return(0);
Start_I2c();
SendByte(AddWr+1);
if(ack==0)return(0);
Val=RcvByte();
NoAck_I2c(); //發(fā)送非應(yīng)位
Stop_I2c(); //結(jié)束總線(xiàn)
t_10us=100;
return(Val);
}*/
/*------------------------------------------------
寫(xiě)入DA轉(zhuǎn)換數(shù)值
輸入?yún)?shù)：dat 表示需要轉(zhuǎn)換的DA數(shù)值，范圍是0-255
------------------------------------------------*/
/*bit WriteDAC(unsigned char dat)
{
Start_I2c(); //啟動(dòng)總線(xiàn)
SendByte(AddWr); //發(fā)送器件地址
if(ack==0)return(0);
SendByte(0x40); //發(fā)送器件子地址
if(ack==0)return(0);
SendByte(dat); //發(fā)送數(shù)據(jù)
if(ack==0)return(0);
Stop_I2c();
}*/
bit WriteDAC2()
{
unsigned int numm;
Start_I2c(); //啟動(dòng)總線(xiàn)
SendByte(AddWr); //發(fā)送器件地址
// if(ack==0)return(0);
SendByte(0x40); //發(fā)送器件子地址
// if(ack==0)return(0);
for(numm=0;numm<256;numm++)
{
SendByte(table2[numm]); //發(fā)送數(shù)據(jù)
DelayUs2x((unsigned int)(1000/fh*3.9)-4); //150-1000Hz
}
// if(ack==0)return(0);
// Stop_I2c();
}
/*void InitTimer0(void)
{
TMOD = 0x01;
TH0 = 0x0FF;
TL0 = 0x0F6;
EA = 1;
ET0 = 1;
TR0 = 0;
}
void Timer0Interrupt(void) interrupt 1
{
TH0 = 0x0FF;
TL0 = 0x0F6;
t_10us++;
if(t_10us>10000)t_10us=0;
}*/
void InitTimer1(void)
{
TMOD |= 0x10;
TH1 = 0xFF;
TL1 = 0xF6;
EA = 1;
ET1 = 1;
TR1 = 0;
}
void Timer1Interrupt(void) interrupt 3
{
TH1 = 0xFF;
TL1 = 0xF6;
t100us++;
t100us2++;
if(t100us2<10)out2=0;
else if(t100us2<20)out2=1;
else t100us2=0;
// if(t100us>10000)
// t100us=0;
if(t100us<(500*5/fh2))out=1;
else if(t100us<(500*8/fh2))out=0;
else t100us=0;
// keyscan();
}
void display()
{
unsigned int shi,ge,bai,qian,wan;
LCD_Write_Com(0x80+0x40);
if(flag_dis==1)
{
LCD_Write_Data(table1[13]);
LCD_Write_Data(table1[14]);
LCD_Write_Data(table1[15]);
pinlv=fh2;
}
if(flag_dis==0)
{
LCD_Write_Data(table1[0]);
LCD_Write_Data(table1[1]);
LCD_Write_Data(table1[2]);
pinlv=fh;
}
pinlv*=10.0;
wan=pinlv/10000;
qian=pinlv%10000/1000;
bai=pinlv%1000/100;
// shi=pinlv%100/10;
// ge=pinlv%10;
LCD_Write_Com(0x8d);
if(flag_dis==1)
LCD_Write_Data(0x35);
else LCD_Write_Data(0x30);
LCD_Write_Com(0x80+0x44);
LCD_Write_Data(0x30+wan);
LCD_Write_Data(0x30+qian);
LCD_Write_Data(0x30+bai);
// LCD_Write_Data(0x30+shi);
// LCD_Write_Com(0x80+0x49);
// LCD_Write_Data(0x30+ge);
}
void keyscan()
{
TR1 = 0;
if(k1==0)
{TR1 = 0;
DelayMs(10);
if(k1==0)
{
if(flag_dis==0)
flag_dis=1;
else flag_dis=0;
while(!k1){buz=!buz;DelayUs2x(250);}
}
display();
}
if(k2==0)
{TR1 = 0;
DelayMs(10);
if(k2==0)
{
if(flag_dis==0)
if(fh==10)fh=0;
if(fh<1000)
fh+=50;
if(flag_dis==1)
if(fh2<1500)
fh2+=100;
while(!k2){buz=!buz;DelayUs2x(250);}
}
display();
}
if(k3==0)
{TR1 = 0;
DelayMs(10);
if(k3==0)
……………………
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