單片機IC卡讀寫仿真程序

ID:556863 · 發(fā)表于 2020-11-18 11:28

程序：

#include "reg52.h"
#include "lcd.h"
unsigned char Rec_Buffer[4];
#define DELAY_IIC_TIME 60
#define TRUE 1
#define FALSE 0
sbit SCL=P1^0; //時鐘線
sbit SDA=P1^1; //數(shù)據(jù)線
unsigned int money;
bit err_flag;
//PC發(fā)送的命令
#define CardID_Addr 0x00 //卡號地址 00~02
#define Password_Addr 0x0a //密碼 0a~0d
#define Money_Addr 0x0f //金額 0f~10
#define COM_RD_CARD 0x45 //上位機發(fā)的讀卡命令
#define COM_WR_CARD 0x67 //上位機發(fā)的寫卡命令
#define COM_ADD_MONEY 0xab //上位機發(fā)的充錢命令
#define COM_DEC_MONEY 0x89 //上位機發(fā)的扣錢命令
#define COM_WR_ERROR 0xdd //出錯
#define FLAG_RD_OK 0x12 //上傳的數(shù)據(jù),表示讀卡完畢
#define FLAG_WR_OK 0x34 //上傳的數(shù)據(jù),表示寫卡完畢
#define FLAG_RD_ER 0x56 //上傳的數(shù)據(jù),表示讀卡錯誤
#define FLAG_WR_ER 0x78 //上傳的數(shù)據(jù),表示寫卡錯誤
#define FLAG_NO_MONEY 0x9a //卡上金額不足
#define FLAG_FULL_MONEY 0xbc //卡上金額過多
#define adr_mon_h 0x0f //錢的高位地址
#define adr_mon_l 0x10
unsigned char Card_num[]={"ID: "};
unsigned char Money_num[]={"MONEY: . "};
bit Check_Acknowledge(void);
void I2C_Start(void);
void I2C_Stop(void);
unsigned char Read_One_Byte(unsigned char);
unsigned char ReadI2CByte(void);
void Send_0(void);
void Send_1(void);
void WriteI2CByte(unsigned char) ;
void Write_One_Byte(unsigned char,unsigned char);
/********** Function Definition 函數(shù)定義 ************/
void DELAY_IIC(unsigned int t)
{
while(t!=0)
t--;
}
void I2C_Start(void)
{
SDA=1;
SCL=1;
DELAY_IIC(DELAY_IIC_TIME);
SDA=0;
DELAY_IIC(DELAY_IIC_TIME);
SCL=0;
DELAY_IIC(DELAY_IIC_TIME);
}
void I2C_Stop(void)
{
SDA=0;
SCL=1;
DELAY_IIC(DELAY_IIC_TIME);
SDA=1;
DELAY_IIC(DELAY_IIC_TIME);
SCL=0;
DELAY_IIC(DELAY_IIC_TIME);
}
void Send_0(void)
{
SDA=0;
SCL=1;
DELAY_IIC(DELAY_IIC_TIME);
SCL=0;
DELAY_IIC(DELAY_IIC_TIME);
}
void Send_1(void)
{
SDA=1;
SCL=1;
DELAY_IIC(DELAY_IIC_TIME);
SCL=0;
DELAY_IIC(DELAY_IIC_TIME);
}
bit Check_Acknowledge(void)
{
SDA=1;
SCL=1;
DELAY_IIC(DELAY_IIC_TIME/2);
F0=SDA;
DELAY_IIC(DELAY_IIC_TIME/2);
SCL=0;
DELAY_IIC(DELAY_IIC_TIME);
if(F0==1)
return FALSE;
return TRUE;
}
void WriteI2CByte(unsigned char b)
{
char i;
for(i=0;i<8;i++)
if((b<<i)&0x80)
Send_1();
else
Send_0();
}
unsigned char ReadI2CByte(void)
{
unsigned char b=0,i;
for(i=0;i<8;i++)
{
SDA=1;
SCL=1;
DELAY_IIC(10);
F0=SDA;
DELAY_IIC(10);
SCL=0;
if(F0==1)
{
b=b<<1;
b=b|0x01;
}
else
b=b<<1;
}
return b;
}
/**********以下為讀寫24c02的函數(shù)**********/
void Write_One_Byte(unsigned char addr,unsigned char thedata)
{
bit acktemp=1;
I2C_Start();
WriteI2CByte(0xa0);
acktemp=Check_Acknowledge();
WriteI2CByte(addr);
acktemp=Check_Acknowledge();
WriteI2CByte(thedata);
acktemp=Check_Acknowledge();
I2C_Stop();
}
unsigned char Read_One_Byte(unsigned char addr)
{
bit acktemp=1;
unsigned char mydata;
I2C_Start();
WriteI2CByte(0xa0);
acktemp=Check_Acknowledge();
WriteI2CByte(addr);
acktemp=Check_Acknowledge();
I2C_Start();
WriteI2CByte(0xa1);
acktemp=Check_Acknowledge();
mydata=ReadI2CByte();
acktemp=Check_Acknowledge();
return mydata;
I2C_Stop();
}
char Num2Char(unsigned char ch)
{
if(ch<=9)
return (ch+'0');
else return (ch-10+'a');
}
void System_Init(void)
{
TMOD=0x21; //串行口初始化
TH1=0xfd;TL1=0xfd; //設定波特率 9600
PCON=0x00;
TR1=1; //啟動T1
SCON=0x50; //串行口工作在方式1，并允許接收
EA=1;
ES=1;
}
void main(void)
{
System_Init(); //初始化
LCD_Init();
while(1)
{
//////////////此代碼用來測試IIC讀寫/////////////////
#ifdef _IIC_DUBG
Write_One_Byte(0,2); //ADD0 寫入數(shù)據(jù)2
Write_One_Byte(1,7); //ADD1 寫入數(shù)據(jù)3
LCD_Wr_Char(0,0,Read_One_Byte(0)+'0'); //讀取24C02 并在LM016顯示
LCD_Wr_Char(1,0,Read_One_Byte(1)+'0');
#endif
//////////////////IIC測試結束//////////////////////////
Money_num[6]=((money/10000)%10)+'0';
Money_num[7]=((money/1000)%10)+'0';
Money_num[8]=((money/100)%10)+'0';
Money_num[9]=((money/10)%10)+'0';
Money_num[11]=(money%10)+'0';
LCD_Wr_String(0,0,Card_num);
LCD_Wr_String(0,1,Money_num);
}
}
//IC卡讀和寫子程序,中斷
void rxdata(void) interrupt 4 using 0
{
unsigned char i,j;
unsigned char rdbuf[20]; //讀取卡中的數(shù)據(jù)緩沖
unsigned char RxBuf[20]; //讀取串口數(shù)據(jù)緩沖
EA=0;
for(i=0;i<2;i++) ////讀取命令,第一個字節(jié)為命令字節(jié),第二個字節(jié)為在第二個字節(jié)之后還有多少個字節(jié)
{
while(!RI);
RI=0;
RxBuf[i]=SBUF;
}
if(RxBuf[1]!=0) //如果字節(jié)數(shù)不是0，則繼續(xù)讀取剩余的數(shù)據(jù)
{
for(i=0;i<RxBuf[1];i++)
{
while(!RI);
RI=0;
RxBuf[2+i]=SBUF;
}
}
if(RxBuf[0]==COM_RD_CARD) //讀卡命令
{
err_flag=0;
rdbuf[0]=Read_One_Byte(CardID_Addr); //讀卡中的ID號
rdbuf[1]=Read_One_Byte(CardID_Addr+1);
rdbuf[2]=Read_One_Byte(CardID_Addr+2);
rdbuf[3]=Read_One_Byte(CardID_Addr+3);
rdbuf[4]=Read_One_Byte(CardID_Addr+4);
rdbuf[5]=Read_One_Byte(Money_Addr);
rdbuf[6]=Read_One_Byte(Money_Addr+1);
SBUF= COM_RD_CARD; //發(fā)送讀卡命令返回PC
while(!TI);
TI=0;
for(j=0;j<7;j++) //發(fā)送卡數(shù)據(jù)返回PC
{
SBUF=rdbuf[j];
while(!TI);
TI=0;
}
Card_num[3]=(rdbuf[0]>>4) +'0';
Card_num[4]=(rdbuf[0]&0x0f) +'0';
Card_num[5]=(rdbuf[1]>>4) + '0';
Card_num[6]=(rdbuf[1]&0x0f) + '0';
Card_num[7]=(rdbuf[2]>>4) + '0';
Card_num[8]=(rdbuf[2]&0x0f) + '0';
Card_num[9]=(rdbuf[3]>>4) + '0';
Card_num[10]=(rdbuf[3]&0x0f) + '0';
Card_num[11]=(rdbuf[4]>>4) + '0';
Card_num[12]=(rdbuf[4]&0x0f) + '0';
money=rdbuf[5]*256+rdbuf[6];
}
else if(RxBuf[0]==COM_WR_CARD) //寫卡命令
{
err_flag=0;
Write_One_Byte(CardID_Addr,RxBuf[2]); //寫卡號
Write_One_Byte(CardID_Addr+1,RxBuf[3]);
Write_One_Byte(CardID_Addr+2,RxBuf[4]);
Write_One_Byte(CardID_Addr+3,RxBuf[5]);
Write_One_Byte(CardID_Addr+4,RxBuf[6]);
Write_One_Byte(Money_Addr,RxBuf[7]);
Write_One_Byte(Money_Addr+1,RxBuf[8]);
SBUF=COM_WR_CARD;while(!TI);TI=0;
SBUF=COM_WR_CARD;while(!TI);TI=0;
SBUF=COM_WR_CARD;while(!TI);TI=0;
/*if((Read_One_Byte(CardID_Addr)!=RxBuf[2])
||(Read_One_Byte(CardID_Addr+1)!=RxBuf[3])
||(Read_One_Byte(CardID_Addr+2)!=RxBuf[4])
||(Read_One_Byte(CardID_Addr+3)!=RxBuf[5])
||(Read_One_Byte(CardID_Addr+4)!=RxBuf[6]))
err_flag=1;
if(!err_flag)
{
SBUF=COM_WR_CARD;while(!TI);TI=0;
SBUF=COM_WR_CARD;while(!TI);TI=0;
SBUF=COM_WR_CARD;while(!TI);TI=0;
SBUF=COM_WR_CARD;while(!TI);TI=0;
}
else
{
SBUF=COM_WR_ERROR;
while(!TI);
TI=0;
} */
}
else if(RxBuf[0]==COM_ADD_MONEY) //充錢命令
{
err_flag=0;
money=Read_One_Byte(Money_Addr)*256+Read_One_Byte(Money_Addr+1);
money += (RxBuf[7]*256 + RxBuf[8]);
if( Read_One_Byte(Money_Addr)!=(money/256)
|| Read_One_Byte(Money_Addr+1)!=(money%256))
err_flag=1;
if(!err_flag)
{
SBUF=COM_ADD_MONEY;
while(!TI);
TI=0;
}else
{
SBUF=COM_WR_ERROR;
while(!TI);
TI=0;
}
}
else if(RxBuf[0]==COM_DEC_MONEY)
{
err_flag=0;
money=Read_One_Byte(Money_Addr)*256+Read_One_Byte(Money_Addr+1);
money -= (RxBuf[7]*256 + RxBuf[8]);
Write_One_Byte(Money_Addr,money/256);
Write_One_Byte(Money_Addr+1,money%256);
if( Read_One_Byte(Money_Addr)!=(money/256)
|| Read_One_Byte(Money_Addr+1)!=(money%256))
err_flag=1;
if(!err_flag)
{
SBUF=COM_DEC_MONEY;
while(!TI);
TI=0;
}else
{
SBUF=COM_WR_ERROR;
while(!TI);
TI=0;
}
}
EA=1;
}

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單片機IC卡讀寫仿真程序