125k 读卡器源程序
前言：
曼彻斯特编码
由0到1，表示0；有1到0，表示1；即跳变表示数据；
125KHz的ID卡。ID卡内固化了64位数据，由5个区组成：9个引导位、10个行偶校验位“PO～P9′’、4个列偶校验位“PC0～PC3”、40个数据位“D00～D93”和1个停止位S0。9个引导位是出厂时就已掩膜在芯片内的，其值为“111111111”，当它输出数据时，首先输出9个引导位，然后是10组由4个数据位和1个行偶校验位组成的数据串，其次是4个列偶校验位，最后是停止位“0”。“D00～D13”是一个8位的晶体版本号或ID识别码。“D20～D93”是8组32位的芯片信息，即卡号。注意校验位都是偶校验，网上有些资料写的是奇校验，很明显是错的，如果是奇校验的话，在一个字节是FF的情况下，很容易就出现9个1，这样引导位就不是唯一的了，也就无法判断64位数据的起始位了。
数据格式是：
单片机喂狗程序：会自动复位，需要把它弄清楚才好。原程序只在中断的时候才喂狗，这样狗会叫，所以不行。
要在while(1)循环里面，把喂狗程序加进去，要不然狗要叫的。
曼彻斯特解码：
根据两个下降沿的长度，测量，来判断数据到底是1还是0；
这里要设置一个状态位，以下降沿检测为例；
1，检测到两个下降沿之间的时间为1T
若tag=1，即还有半位没读完，则下一位的值跟当前位的值相同，tag继续为1；
若以下降沿为1，上升沿为0，则当前数据为0，下一位的数据为0；
2检测到两个下降沿之间的数据为1.5T
若当前tag为1，表示还有半位没有读完，当前值我为1，下一位·0
3，2T
若当前Tag=1，当前位为1，下两位数据为01；
源码程序如下：
采用中断方式读时间间隔，经过检测。可以读任何的芒果卡
/****************************************************************
* Project Name: ID Reader Module
* COMPANY: SCISHINE
* VERSION: V1.0
* DATE: 2010/2/1,2012/11/22
* AUTHOR: Lfyun/wd
* IC: STC89C52
****************************************************************/
//#include <reg52.h>
#include <stc12c2052AD.H>
//#include "STCIDmodule.h"
//#include <intrins.h>
//#include <stdio.h>
unsigned int Decode_data_temp[5]={0,0,0,0,0}; //?????????
//unsigned char Tran_data_temp[11]={0x30,0x35,0x36,0x38,0x32,0x37,0x31,0x33,0x39,0x34,0x0d}; //?????ASCII??
unsigned char Tran_data_temp[11]={0,0,0,0,0,0,0,0,0,0,0}; //?????ASCII??
//10,100,1000,10000,
unsigned long int Divsor_temp[9]={0x3b9aca00,0x05f5e100,0x00989680,0x000f4240,0x000186a0,0x00002710,0x000003e8,0x00000064,0x0000000a};//??
unsigned long int Dividen_temp=0;
unsigned char Data_buf=0; //??????,??????
unsigned char INT0_Inter_Flag=0; //????????? ??
unsigned char wk=0; //????????9?1,???,??????????9 ?1
unsigned char All_byte_finish_flag=0; //??????????,??????????
unsigned char One_byte_finish_flag=0; //????????
unsigned char Row_check=0; //5???1???,????? ???,??5??1 ???
unsigned char Row_bit_num=0; //??????, ??????
unsigned char Tag=0; //???????? ???
//unsigned char p[2]={0,0};
//unsigned char q=0;
void delay(int j);
unsigned char Column01_bit_count=0;
unsigned char Column02_bit_count=0;
unsigned char Column03_bit_count=0;
unsigned char Column04_bit_count=0; //???1???,????? ,????1 ???
unsigned char Low_Flag=0; //???????????,??????,
unsigned char Data_buf1=0; //??????,?????,????buf
unsigned char Byte_num; //0~4????,????????
unsigned char Data_ready=0; //??????,??????
unsigned int Time_Temp_Buf1=0;
unsigned int Time_Temp_Buf=0; //??????,1T,1.5T,2T
unsigned char First_time_flag=1; ///???????
unsigned char led_buzzer_key=0; ///????
////sbit Row_check_flag=Row_check^0; //???????
////sbit Column_check01 = Column01_bit_count^0;
/////sbit Column_check02 = Column02_bit_count^0;
/////sbit Column_check03 = Column03_bit_count^0;
////sbit Column_check04 = Column04_bit_count^0; ///??????
sbit Buzzer = P1^3;
sbit Led = P1^4;
//////////#define Band_load 0xcc ///???9600????
#define Band_load 221 //////???1200????
void Sys_Init();
void Decode_Manchester();
void Row_Count();
void Test_5Bit();
void Send_AByte();
void Data_to_AscII();
void Delay_50ms();
void Send_data();
void Led_buzzer();
void delay(int j);
/********************************************
????: Delay_50ms()
????: 50ms??
????: ?
????: ?
********************************************/
void Delay_50ms()
{
unsigned char n;
unsigned char m;
for(m=0;m<=0x0f;m++)
{for(n=0;n<=0xfe;n++)
; }
return;
}
/********************************************
????: Sys_Init()
????: ?????
????: ?
????: ?
********************************************/
void Sys_Init()
{ WDT_CONTR=0x3c;
// P3M0=0x05;
// P3M1=0x00;
// P1M0=0x00;
// P1M1=0x00; //????
Buzzer=0; //????
Led=0; //??
// P1=0x00;
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
TMOD=0x21; //Timer1???????,??8???,???0??16?????,????
// PX0H=1;
PX0=1;
First_time_flag=1;
/////////???UART??????////////
SCON=0x40;
AUXR =0x80; //???0???1T,???0?????????,???,???1???1T/12,12??
//////// AUXR&&=#10111111B; //???1???12T
TH1=Band_load;
TL1=TH1;
TCON=0x51; //??Timer0??????,???????,??Timer1??.,?????0????0,??????
IT0=1;//???????,?????,?????????????? ??????
EX0=1;
EA=1;
IE|=0x91; //??????,UART????,????
ES=0;
// P1=0x18;
Buzzer =1; //????
return;
}
/********************************************
????: Row_Count()
????: ??1??
????: ?
????: ?
********************************************/
void Row_Count()
{ switch(Row_bit_num)
{ case 1:Column01_bit_count++; //????1???
break;
case 2:Column02_bit_count++; //????1???
break;
case 3:Column03_bit_count++;
break;
case 4:Column04_bit_count++;
break;
default: break;
}
return;
}
/********************************************
????: Test_5Bit()
????: ?,????
????: ?
????: ?
********************************************/
void Test_5Bit()
{
if(Row_bit_num<=4)
return;
else
{ if(Byte_num<=4)
{
if(Low_Flag==0)
{ Low_Flag=1;
Row_check=Row_check<<7;
///// Checkout();
// if(Row_check&0x01==0x00)
// if(Row_check|0xfe==0xfe)
if(Row_check==0x00)
{ //// Checkout_Flag=0;
Data_buf=Data_buf>>1;
Data_buf1=Data_buf<<4;
// Dividen_temp=Dividen_temp>>1;
Data_buf=0;
Row_check=0;
Row_bit_num=0;
// Data_ready=1;
return;
}
else
{ Row_check=0;
Row_bit_num=0;
Column01_bit_count=0;
Column02_bit_count=0;
Column03_bit_count=0;
Column04_bit_count=0;
wk=0;
Byte_num=0;
Data_buf=0;
Data_buf1=0;
Dividen_temp=0;
return;}
}
else
{ Low_Flag=0;
Row_check=Row_check<<7;
//// Checkout();
// if(Row_check&0x01==0x00)
// if(Row_check|0xfe==0xfe)
if(Row_check==0x00)
{///// Checkout_flag=0;
Data_buf=Data_buf>>1;
Data_buf1 += Data_buf;
// Dividen_temp=Dividen_temp>>1;
// Dividen_temp=Dividen_temp|0x01;
Data_buf=0;
Row_check=0;
Row_bit_num=0;
// Byte_num++;
One_byte_finish_flag=1;
return;
}
else
{ Row_check=0;
Row_bit_num=0;
Column01_bit_count=0;
Column02_bit_count=0;
Column03_bit_count=0;
Column04_bit_count=0;
wk=0;
Byte_num=0;
Data_buf=0;
Data_buf1=0;
Dividen_temp=0;
return;}
}
}
else
{ Column01_bit_count=Column01_bit_count<<7;
Column02_bit_count=Column02_bit_count<<7;
Column03_bit_count=Column03_bit_count<<7;
Column04_bit_count=Column04_bit_count<<7;
// if((Column01_bit_count&0x01==0x00)&&(Column02_bit_count&0x01==0x00)&&(Column03_bit_count&0x01==0x00)&&(Column04_bit_count&0x01==0x00))
// if((Column01_bit_count|0xfe==0xfe)&&(Column02_bit_count|0xfe==0xfe)&&(Column03_bit_count|0xfe==0xfe)&&(Column04_bit_count|0xfe==0xfe))
if(Column01_bit_count==0x00&&Column02_bit_count==0x00&&Column03_bit_count==0x00&&Column04_bit_count==0x00)
{ All_byte_finish_flag=1;
//Data_ready=1;
Row_check=0;
Row_bit_num=0;
Column01_bit_count=0;
Column02_bit_count=0;
Column03_bit_count=0;
Column04_bit_count=0;
wk=0;
Byte_num=0;
Data_buf=0;
Data_buf1=0;
// Dividen_temp=0;
return;}
else
{ Row_check=0;
Row_bit_num=0;
Column01_bit_count=0;
Column02_bit_count=0;
Column03_bit_count=0;
Column04_bit_count=0;
wk=0;
Byte_num=0;
Data_buf=0;
All_byte_finish_flag=0;
Data_buf1=0;
Dividen_temp=0;
return;}
}
}
}
/********************************************
????: Send_AByte()
????: ??????????
????: ?
????: ?
********************************************/
void Send_AByte()
{
if(One_byte_finish_flag==1)
{ One_byte_finish_flag=0;
switch(Byte_num)
{ case 0:Decode_data_temp[0]=Data_buf1;
Byte_num++;
break;
case 1:Decode_data_temp[1]=Data_buf1;
Dividen_temp+=Data_buf1;
Byte_num++;
break;
case 2:Decode_data_temp[2]=Data_buf1;
Dividen_temp=Dividen_temp<<8;
Dividen_temp+=Data_buf1;
Byte_num++;
break;
case 3:Decode_data_temp[3]=Data_buf1;
Dividen_temp=Dividen_temp<<8;
Dividen_temp+=Data_buf1;
Byte_num++;
break;
case 4:Decode_data_temp[4]=Data_buf1;
Dividen_temp=Dividen_temp<<8;
Dividen_temp+=Data_buf1;
Byte_num++;
break;
default: break;
}
}
}
/********************************************
????: Decode_Manchester()
????: ???
????: ?
????: ?
********************************************/
//tag=1,????????????????????????????
//tag=0,???????????,??????????
void Decode_Manchester()
{ // while(INT0_Inter_Flag==0);
// INT0_Inter_Flag=0;
//1T
if((Time_Temp_Buf<=0x2310)&&(Time_Temp_Buf>=0x1900))
// if(Time_Temp_Buf<=0x2100)
{ if(wk<=0x08)
{ wk++;
Tag=1;
// return;
}
//Data_buf?8?unsinged char ??
else
{ if(Tag==1)
{
Tag=1;
Data_buf=Data_buf<<1;
Data_buf=Data_buf|0x01;
// Dividen_temp=Dividen_temp<<1;
// Dividen_temp=Dividen_temp|0x01;
Row_check++; //??????
Row_bit_num++;
Row_Count();
Test_5Bit();
Send_AByte();
// return;
}
else
{
Tag=0;
Data_buf=Data_buf<<1;
// Dividen_temp=Dividen_temp<<1;
Row_bit_num++;
Test_5Bit();
Send_AByte();
// return;
}
}
// Time_Temp_Buf=0;
}
//1.5T
else if((Time_Temp_Buf<=0x35b0)&&(Time_Temp_Buf>0x2901))
// else if(Time_Temp_Buf<=0x3500)
{
if(wk<=0x07)
{
//
Row_check=0;
Row_bit_num=0;
Column01_bit_count=0;
Column02_bit_count=0;
Column03_bit_count=0;
Column04_bit_count=0;
wk=0;
Byte_num=0;
Data_buf=0;
Dividen_temp=0;
// return;
}
else if(wk==0x08)
{ if(Tag==1)
{ Tag=0;//???0
wk++;
Data_buf=Data_buf<<1;
// Dividen_temp=Dividen_temp<<1;
Row_bit_num++;
// Test_5Bit();
// return;
}
else//????
{ Row_check=0;
Row_bit_num=0;
Column01_bit_count=0;
Column02_bit_count=0;
Column03_bit_count=0;
Column04_bit_count=0;
wk=0;
Byte_num=0;
Data_buf=0;
Dividen_temp=0;
// return;
}
}
else if(wk>0x08)
{ if(Tag==1)
{
Tag=0;//???0
Data_buf=Data_buf<<1;
Data_buf=Data_buf|0x01;
// Dividen_temp=Dividen_temp<<1;
// Dividen_temp=Dividen_temp|0x01;
Row_check++;
Row_bit_num++;
Row_Count();
Test_5Bit();
Send_AByte();
if(All_byte_finish_flag==0)
{ Data_buf=Data_buf<<1;
// Dividen_temp=Dividen_temp<<1;
Row_bit_num++;
Test_5Bit();
Send_AByte();
}
// return;
}
else
{ Tag=1;
Data_buf=Data_buf<<1;
// Dividen_temp=Dividen_temp<<1;
Row_bit_num++;
Test_5Bit();
Send_AByte();
// return;
}
}
// Time_Temp_Buf=0;
}
//2T
else if((Time_Temp_Buf<=0x4550)&&(Time_Temp_Buf>0x3901))
// else if(Time_Temp_Buf<=5500)
{
if(wk<=0x07)
{ Row_check=0;
Row_bit_num=0;
Column01_bit_count=0;
Column02_bit_count=0;
Column03_bit_count=0;
Column04_bit_count=0;
wk=0;
Byte_num=0;
Data_buf=0;
Dividen_temp=0;
// return;
}
else if(wk==0x08)
{ if(Tag==1)
{ Tag=1;
wk++;
Data_buf=Data_buf<<1;
// Dividen_temp=Dividen_temp<<1;
Row_bit_num++;
// Test_5Bit();
// return;
}
else
{ Row_check=0;
Row_bit_num=0;
Column01_bit_count=0;
Column02_bit_count=0;
Column03_bit_count=0;
Column04_bit_count=0;
wk=0;
Byte_num=0;
Data_buf=0;
Dividen_temp=0;
Tag=0;
// return;
}
}
else
{ if(Tag==1)
{Tag=1;
Data_buf=Data_buf<<1;
Data_buf=Data_buf|0x01;
// Dividen_temp=Dividen_temp<<1;
// Dividen_temp=Dividen_temp|0x01;
Row_check++;
Row_bit_num++;
Row_Count();
Test_5Bit();
Send_AByte();
if(All_byte_finish_flag==0)
{ Data_buf=Data_buf<<1;
// Dividen_temp=Dividen_temp<<1;
Row_bit_num++;
Test_5Bit();
Send_AByte();
}
// return;
}
else
{ Row_check=0;
Row_bit_num=0;
Column01_bit_count=0;
Column02_bit_count=0;
Column03_bit_count=0;
Column04_bit_count=0;
wk=0;
Byte_num=0;
Data_buf=0;
Dividen_temp=0;
Tag=0;
// return;
}
}
// Time_Temp_Buf=0;
}
Time_Temp_Buf=0;
// All_byte_finish_flag=1;
}
/*
void Decode_Manchester()
{ unsigned char bb=0;
// while(INT0_Inter_Flag==0);
// INT0_Inter_Flag=0;
if(wk<=0x07)
{ bb=(Time_Temp_Buf<=0x2510)&&(Time_Temp_Buf>=0x1000);
switch(bb)
// if(Time_Temp_Buf<=720)
{ case 1: wk++;
Tag=1;
break;
// return;
case 0:
wk=0;
break;
default: break;
// All_byte_finish_flag=0;
// return;
}
}
else
{if(Time_Temp_Buf<=0x2510&&Time_Temp_Buf>=0x1000)
// else if(Time_Temp_Buf<=720)
{
////// led_buzzer_key=1;
//////// Led_buzzer();
if(Tag)
{ Tag=1;
if(wk==0x08)
{ wk++;
Tag=1;
// All_byte_finish_flag=0;
// return;
}
else
{
Data_buf=Data_buf<<1;
Data_buf=Data_buf|0x0001;
Row_check++;
Row_bit_num++;
Row_Count();
Test_5Bit();
Send_AByte();
// return;
}
}
else
{ Tag=0;
Data_buf=Data_buf<<1;
Row_bit_num++;
Test_5Bit();
Send_AByte();
/// return;
}
}
else if(Time_Temp_Buf<=0x36b0&&Time_Temp_Buf>0x2711)
/// else if(Time_Temp_Buf<=1065)
{
if(Tag)
{ Tag=0;
if(wk<=8)
{ wk++;
Tag=0;
Data_buf=Data_buf<<1;
/// return;
}
else
{
Data_buf=Data_buf<<1;
Data_buf |= 0x0001;
Row_bit_num++;
Row_check++;
Row_Count();
Test_5Bit();
Send_AByte();
if(All_byte_finish_flag==0)
{ Data_buf=Data_buf<<1;
Row_bit_num++;
Test_5Bit();
Send_AByte();
}
/// return;
}
}
else
{ Tag=1;
Data_buf=Data_buf<<1;
Row_bit_num++;
Test_5Bit();
Send_AByte();
//// return;
}
}
else if(Time_Temp_Buf<=0x4650&&Time_Temp_Buf>0x36b1)
/// else if(Time_Temp_Buf<=1405)
{
if(Tag==0)
{ Row_check=0;
Row_bit_num=0;
Column01_bit_count=0;
Column02_bit_count=0;
Column03_bit_count=0;
Column04_bit_count=0;
wk=0;
Byte_num=0;
Data_buf=0;
/// Data_buf1=0;
/// return;
}
else if(wk<=0x08)
{ Data_buf=Data_buf<<1;
Tag=1;
Row_bit_num++;
Test_5Bit();
Send_AByte();
/// return;
}
else
{ Tag=1;
Data_buf=Data_buf<<1;
Data_buf |= 0x0001;
Row_bit_num++;
Row_check++;
Row_Count();
Test_5Bit();
Send_AByte();
if(All_byte_finish_flag==0)
{ Data_buf=Data_buf<<1;
Row_bit_num++;
Test_5Bit();
Send_AByte();
}
/// return;
}
}
}
// }
return;
}
/********************************************
????: Data_to_AscII()
????: ?????????ASCII?
????: ?
????: ?
********************************************/
void Data_to_AscII()
{
unsigned char j=0;
unsigned char i=0;
unsigned char k=0;
if(All_byte_finish_flag==1)
{ All_byte_finish_flag=0;
led_buzzer_key=1;
Tran_data_temp[0]=Dividen_temp/Divsor_temp[0];
Tran_data_temp[1]=(Dividen_temp%Divsor_temp[0])/Divsor_temp[1];
Tran_data_temp[2]=(Dividen_temp%Divsor_temp[1])/Divsor_temp[2];
Tran_data_temp[3]=(Dividen_temp%Divsor_temp[2])/Divsor_temp[3];
Tran_data_temp[4]=(Dividen_temp%Divsor_temp[3])/Divsor_temp[4];
Tran_data_temp[5]=(Dividen_temp%Divsor_temp[4])/Divsor_temp[5];
Tran_data_temp[6]=(Dividen_temp%Divsor_temp[5])/Divsor_temp[6];
Tran_data_temp[7]=(Dividen_temp%Divsor_temp[6])/Divsor_temp[7];
Tran_data_temp[8]=(Dividen_temp%Divsor_temp[7])/Divsor_temp[8];
Tran_data_temp[9]=(Dividen_temp%Divsor_temp[8]);
//?????ASCII?
for(j=0;j<=0x0a;j++)
{ if(j<=9)
Tran_data_temp[j]+=0x30;
else
Tran_data_temp[j]='\n';
switch(Tran_data_temp[j])
{
case 0x30:
k++;
break;
default: break;
}
}
if(k==0x0a)
led_buzzer_key=0;
}
return;
}
/* switch(Tran_data_temp[j])
{
case 0x30:
Tran_data_temp[j]=0x27;
break;
case 0x31:
Tran_data_temp[j]=0x1e;
break;
case 0x32:
Tran_data_temp[j]=0x1f;
break;
case 0x33:
Tran_data_temp[j]=0x20;
break;
case 0x34:
Tran_data_temp[j]=0x21;
break;
case 0x35:
Tran_data_temp[j]=0x22;
break;
case 0x36:
Tran_data_temp[j]=0x23;
break;
case 0x37:
Tran_data_temp[j]=0x24;
break;
case 0x38:
Tran_data_temp[j]=0x25;
break;
case 0x39:
Tran_data_temp[j]=0x26;
break;
default: break;
}
*/
/********************************************
????: Led_buzzer()
????: ???????,??,????
????: ?
????: ?
********************************************/
void Led_buzzer()
{ if(led_buzzer_key)
{
Led=1;
Buzzer=0;
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Buzzer=1;
Led=0;
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Delay_50ms();
Data_ready=1;
led_buzzer_key=0;
}
return;
}
/********************************************
????: INT0_int()
????: ??????
????: ?
????: ?
********************************************/
void Int0_int(void) interrupt 0
{ TR0=0; //?????0
// p[0]=TH0;
// p[1]=TL0;
Time_Temp_Buf|=TH0;
Time_Temp_Buf=Time_Temp_Buf<<8;
Time_Temp_Buf=Time_Temp_Buf|TL0;
// Time_Temp_Buf=(p/16)*16*16*16+(p%16)*16*16+(q/16)*16+q%16;
// q=0;
if(First_time_flag==1)
{ First_time_flag=0;
Time_Temp_Buf=0;
}
else
INT0_Inter_Flag=1;//?????????????
// All_byte_finish_flag=1;
TL0=0;
TH0=0;
TR0=1;//?????0
}
/********************************************
????: Send_data()
????: ???????????
????: ?
????: ?
********************************************/
void Send_data()
{ unsigned char k=0;
RI=0;
// EX0=0;
if(1==Data_ready)
{
for(k=0;k<=0x0a;k++)
{
// SBUF=Row_check;
SBUF=Tran_data_temp[k];
// SBUF=wk;
// SBUF='a';
while(0==TI);
TI=0;
Tran_data_temp[k]=0;
// Row_check=0;
}
Dividen_temp=0;
First_time_flag=1;
}
Data_ready=0;
// EX0=1;
return;
}
void main()
{ Sys_Init();
// Pwm_125K_Out();
while(1)
{
// if(INT0_Inter_Flag==1)
// {
while(INT0_Inter_Flag)
{ INT0_Inter_Flag=0;
Decode_Manchester();
Data_to_AscII();
Led_buzzer();
Send_data();
WDT_CONTR=0x3c;
// Buzzer = 0; //????
// Led = 0; //??
// P1=0x00;
// Buzzer =1; //????
// Led = 1; //??
// P1=0x18;
// delay(3);
}
}
}
void delay(int j)
{
for(;j>0;j--);
}