基于51，人体红外感应和RC522的门禁系统

总结一下最近学的东西，这两天学的东西，rfid门卡系统终于弄出来来了，这个程序算现在写过的比较满意的程序，大家可以参考参考

主函数：

#include<reg52.h>
#include"mian.h"
#include"rc522.h"
#include"12864.h"

//卡号为0扇区0块内容的前四字节为卡号，且此块内容不能改写
uchar  status;
uchar g_ucTempbuf[20];
unsigned char hextoasc(unsigned char i)
{
    if(i<0x09)
    {
        i=i+'0';
        return i;
    }
    else
    {
        i=i+0x37;
        return i;
    }
}

void main()
{
    uint i;
    uchar flagren,flagzhenque;
    uchar xule[4] = "8171";

    //初始化：
     init_12864();

    
     lcd_pos(1,2);
     write_string("实验重地");
     lcd_pos(2,2);
     write_string("闲人免进");
     while(1)
     {
          flagren = hwgy();
          if(flagren == 1)
          break;
     }

     
     write_cmd(0x01);//清除lcd的显示内容
     lcd_pos(1,3);
     write_string("欢迎");
     lcd_pos(2,2);
     write_string("请刷卡！！");   
     
    PcdReset();//rc522初始化
    PcdAntennaOff(); //关闭和打开天线
    PcdAntennaOn();
    M500PcdConfigISOType('A');//设定工作模式

    //防冲突，这里需要一个循环，让读卡器不断去读卡
    while(1)
    {
        status = PcdRequest(PICC_REQALL, g_ucTempbuf);
        //PICC_REQALL他是个宏定义 意思是寻找天线内的所有卡片，
        // g_ucTempbuf 是个数组，在这里函数读取卡内的前两位放在数组中
        if(status != MI_OK)//没有找到卡，继续执行PcdRequest()
        {
              continue;
        }
        
        status = PcdAnticoll(g_ucTempbuf);//防冲突
        //卡片序列号，4字节,这里的status可以判PcdAnticoll的执行情况
        //如果执行成功，表示g_ucTempbuf上面已经记在唯一的卡号了
        //在这里g_ucTempbuf已经用了2+4个
        if(status != MI_OK)//没有找到卡，继续执行PcdRequest()
        {
              continue;
        }

        
        if(status == MI_OK)
        {
          LED_GREEN =0;
          
          for(i=0;i<4;i++)//在12864上显示卡号
          {
            if( hextoasc((g_ucTempbuf[i]&0xf0)>>4)  == xule[i])
             {
                write_cmd(0x01);
                lcd_pos(1,2);
                write_string("封韦杰");
                lcd_pos(2,2);
                write_string("请进！！");
                flagzhenque = 1; 
             }
             else 
             {
                write_cmd(0x01);
                flagzhenque = 0;
                lcd_pos(1,3);
                write_string("错误！");
                lcd_pos(2,2);
                write_string("请出示门卡！");
                 break;       //寻卡失败跳出循环
                }
           }
           if(flagzhenque == 1)
           {
                  for(i=0;i<125;i++)
                     {
                        step();
                      }
             }
          LED_GREEN = 1;
           }
    
       }

}

void DelayMs(unsigned int _MS)
{
    TH1 = (unsigned char)(RCAP2_1ms>>8);
    TL1 = (unsigned char)(RCAP2_1ms);

    ET1     = 0;                                        // Disable timer2 interrupt
    TR1     = 1;
    while (_MS--)
    {  
        while (!TF1);
        TF1 = 0;
        TH1 = (unsigned char)(RCAP2_1ms>>8);
        TL1 = (unsigned char)(RCAP2_1ms);
    }
    TR1 = 0;
}

rc522.c

#include <intrins.h>
#include <REG52.H>

#include "mian.h"
#include "rc522.h"
#define MAXRLEN 18
                              
/
//功    能：寻卡
//参数说明: req_code[IN]:寻卡方式
//                0x52 = 寻感应区内所有符合14443A标准的卡
//                0x26 = 寻未进入休眠状态的卡
//          pTagType[OUT]：卡片类型代码
//                0x4400 = Mifare_UltraLight
//                0x0400 = Mifare_One(S50)
//                0x0200 = Mifare_One(S70)
//                0x0800 = Mifare_Pro(X)
//                0x4403 = Mifare_DESFire
//返    回: 成功返回MI_OK
/

char PcdRequest(unsigned char req_code,unsigned char *pTagType)
{
   char status;  
   unsigned int  unLen;
   unsigned char ucComMF522Buf[MAXRLEN]; 

   ClearBitMask(Status2Reg,0x08);
   WriteRawRC(BitFramingReg,0x07);
   SetBitMask(TxControlReg,0x03);
 
   ucComMF522Buf[0] = req_code;

   status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,1,ucComMF522Buf,&unLen);
   
   if ((status == MI_OK) && (unLen == 0x10))
   {    
       *pTagType     = ucComMF522Buf[0];
       *(pTagType+1) = ucComMF522Buf[1];
   }
   else
   {   status = MI_ERR;   }
   
   return status;
}
/
//功    能：防冲撞
//参数说明: pSnr[OUT]:卡片序列号，4字节
//返    回: 成功返回MI_OK
/  
char PcdAnticoll(unsigned char *pSnr)
{
    char status;
    unsigned char i,snr_check=0;
    unsigned int  unLen;
    unsigned char ucComMF522Buf[MAXRLEN]; 
    

    ClearBitMask(Status2Reg,0x08);
    WriteRawRC(BitFramingReg,0x00);
    ClearBitMask(CollReg,0x80);
 
    ucComMF522Buf[0] = PICC_ANTICOLL1;
    ucComMF522Buf[1] = 0x20;

    status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,2,ucComMF522Buf,&unLen);

    if (status == MI_OK)
    {
         for (i=0; i<4; i++)
         {   
             *(pSnr+i)  = ucComMF522Buf[i];
             snr_check ^= ucComMF522Buf[i];
         }
         if (snr_check != ucComMF522Buf[i])
         {   status = MI_ERR;    }
    }
    
    SetBitMask(CollReg,0x80);
    return status;
}

/
//功    能：选定卡片
//参数说明: pSnr[IN]:卡片序列号，4字节
//返    回: 成功返回MI_OK

/
/*char PcdSelect(unsigned char *pSnr)
{
    char status;
    unsigned char i;
    unsigned int  unLen;
    unsigned char ucComMF522Buf[MAXRLEN]; 
    
    ucComMF522Buf[0] = PICC_ANTICOLL1;
    ucComMF522Buf[1] = 0x70;
    ucComMF522Buf[6] = 0;
    for (i=0; i<4; i++)
    {
        ucComMF522Buf[i+2] = *(pSnr+i);
        ucComMF522Buf[6]  ^= *(pSnr+i);
    }
    CalulateCRC(ucComMF522Buf,7,&ucComMF522Buf[7]);
  
    ClearBitMask(Status2Reg,0x08);

    status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,9,ucComMF522Buf,&unLen);
    
    if ((status == MI_OK) && (unLen == 0x18))
    {   status = MI_OK;  }
    else
    {   status = MI_ERR;    }

    return status;
}
 */
/
//功    能：验证卡片密码
//参数说明: auth_mode[IN]: 密码验证模式
//                 0x60 = 验证A密钥
//                 0x61 = 验证B密钥 
//          addr[IN]：块地址
//          pKey[IN]：密码
//          pSnr[IN]：卡片序列号，4字节
//返    回: 成功返回MI_OK
/               
/*char PcdAuthState(unsigned char auth_mode,unsigned char addr,unsigned char *pKey,unsigned char *pSnr)
{
    char status;
    unsigned int  unLen;
    unsigned char i,ucComMF522Buf[MAXRLEN]; 

    ucComMF522Buf[0] = auth_mode;
    ucComMF522Buf[1] = addr;
    for (i=0; i<6; i++)
    {    ucComMF522Buf[i+2] = *(pKey+i);   }
    for (i=0; i<6; i++)
    {    ucComMF522Buf[i+8] = *(pSnr+i);   }
 //   memcpy(&ucComMF522Buf[2], pKey, 6); 
 //   memcpy(&ucComMF522Buf[8], pSnr, 4); 
    
    status = PcdComMF522(PCD_AUTHENT,ucComMF522Buf,12,ucComMF522Buf,&unLen);
    if ((status != MI_OK) || (!(ReadRawRC(Status2Reg) & 0x08)))
    {   status = MI_ERR;   }
    
    return status;
}
  */
/
//功    能：读取M1卡一块数据
//参数说明: addr[IN]：块地址
//          pData[OUT]：读出的数据，16字节
//返    回: 成功返回MI_OK
/ 
/*char PcdRead(unsigned char addr,unsigned char *pData)
{
    char status;
    unsigned int  unLen;
    unsigned char i,ucComMF522Buf[MAXRLEN]; 

    ucComMF522Buf[0] = PICC_READ;
    ucComMF522Buf[1] = addr;
    CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);
   
    status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);
    if ((status == MI_OK) && (unLen == 0x90))
 //   {   memcpy(pData, ucComMF522Buf, 16);   }
    {
        for (i=0; i<16; i++)
        {    *(pData+i) = ucComMF522Buf[i];   }
    }
    else
    {   status = MI_ERR;   }
    
    return status;
}
 */
/
//功    能：写数据到M1卡一块
//参数说明: addr[IN]：块地址
//          pData[IN]：写入的数据，16字节
//返    回: 成功返回MI_OK
/                  
/*char PcdWrite(unsigned char addr,unsigned char *pData)
{
    char status;
    unsigned int  unLen;
    unsigned char i,ucComMF522Buf[MAXRLEN]; 
    
    ucComMF522Buf[0] = PICC_WRITE;
    ucComMF522Buf[1] = addr;
    CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);
 
    status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);

    if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A))
    {   status = MI_ERR;   }
        
    if (status == MI_OK)
    {
        //memcpy(ucComMF522Buf, pData, 16);
        for (i=0; i<16; i++)
        {    ucComMF522Buf[i] = *(pData+i);   }
        CalulateCRC(ucComMF522Buf,16,&ucComMF522Buf[16]);

        status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,18,ucComMF522Buf,&unLen);
        if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A))
        {   status = MI_ERR;   }
    }
    
    return status;
}
 */
/
//功    能：扣款和充值
//参数说明: dd_mode[IN]：命令字
//               0xC0 = 扣款
//               0xC1 = 充值
//          addr[IN]：钱包地址
//          pValue[IN]：4字节增(减)值，低位在前
//返    回: 成功返回MI_OK
/                 
// char PcdValue(unsigned char dd_mode,unsigned char addr,unsigned char *pValue)
// {
//     char status;
//     unsigned int  unLen;
//     unsigned char i,ucComMF522Buf[MAXRLEN]; 
//     
//     ucComMF522Buf[0] = dd_mode;
//     ucComMF522Buf[1] = addr;
//     CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);

//     status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);

//     if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A))
//     {   status = MI_ERR;   }
//             
//     if (status == MI_OK)
//     {
//          // memcpy(ucComMF522Buf, pValue, 4);
//             for (i=0; i<16; i++)
//             {    ucComMF522Buf[i] = *(pValue+i);   }
//             CalulateCRC(ucComMF522Buf,4,&ucComMF522Buf[4]);
//             unLen = 0;
//             status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,6,ucComMF522Buf,&unLen);
//             if (status != MI_ERR)
//             {    status = MI_OK;    }
//     }
//     
//     if (status == MI_OK)
//     {
//             ucComMF522Buf[0] = PICC_TRANSFER;
//             ucComMF522Buf[1] = addr;
//             CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]); 
//  
//             status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);

//             if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A))
//             {   status = MI_ERR;   }
//     }
//     return status;
// }

/
//功    能：备份钱包
//参数说明: sourceaddr[IN]：源地址
//          goaladdr[IN]：目标地址
//返    回: 成功返回MI_OK
/
// char PcdBakValue(unsigned char sourceaddr, unsigned char goaladdr)
// {
//     char status;
//     unsigned int  unLen;
//     unsigned char ucComMF522Buf[MAXRLEN]; 

//     ucComMF522Buf[0] = PICC_RESTORE;
//     ucComMF522Buf[1] = sourceaddr;
//     CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);
//  
//     status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);

//     if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A))
//     {   status = MI_ERR;   }
//     
//     if (status == MI_OK)
//     {
//         ucComMF522Buf[0] = 0;
//         ucComMF522Buf[1] = 0;
//         ucComMF522Buf[2] = 0;
//         ucComMF522Buf[3] = 0;
//         CalulateCRC(ucComMF522Buf,4,&ucComMF522Buf[4]);
//  
//         status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,6,ucComMF522Buf,&unLen);
//         if (status != MI_ERR)
//         {    status = MI_OK;    }
//     }
//     
//     if (status != MI_OK)
//     {    return MI_ERR;   }
//     
//     ucComMF522Buf[0] = PICC_TRANSFER;
//     ucComMF522Buf[1] = goaladdr;

//     CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);
//  
//     status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);

//     if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A))
//     {   status = MI_ERR;   }

//     return status;
// }


/
//功    能：命令卡片进入休眠状态
//返    回: 成功返回MI_OK
/
char PcdHalt(void)
{
    char status;
    unsigned int  unLen;
    unsigned char ucComMF522Buf[MAXRLEN]; 

    ucComMF522Buf[0] = PICC_HALT;
    ucComMF522Buf[1] = 0;
    CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);
 
    status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);

    return MI_OK;
}

/
//用MF522计算CRC16函数
/
void CalulateCRC(unsigned char *pIndata,unsigned char len,unsigned char *pOutData)
{
    unsigned char i,n;
    ClearBitMask(DivIrqReg,0x04);
    WriteRawRC(CommandReg,PCD_IDLE);
    SetBitMask(FIFOLevelReg,0x80);
    for (i=0; i<len; i++)
    {   WriteRawRC(FIFODataReg, *(pIndata+i));   }
    WriteRawRC(CommandReg, PCD_CALCCRC);
    i = 0xFF;
    do 
    {
        n = ReadRawRC(DivIrqReg);
        i--;
    }
    while ((i!=0) && !(n&0x04));
    pOutData[0] = ReadRawRC(CRCResultRegL);
    pOutData[1] = ReadRawRC(CRCResultRegM);
}
 
/
//功    能：复位RC522
//返    回: 成功返回MI_OK
/
char PcdReset(void)
{
    MF522_RST=1;
    _nop_();
    MF522_RST=0;
    _nop_();
    MF522_RST=1;
     _nop_();
    WriteRawRC(CommandReg,PCD_RESETPHASE);
    _nop_();
    
    WriteRawRC(ModeReg,0x3D);            //和Mifare卡通讯，CRC初始值0x6363
    WriteRawRC(TReloadRegL,30);           
    WriteRawRC(TReloadRegH,0);
    WriteRawRC(TModeReg,0x8D);
    WriteRawRC(TPrescalerReg,0x3E);
    WriteRawRC(TxAutoReg,0x40);     
    return MI_OK;
}
//
//设置RC632的工作方式 
//
char M500PcdConfigISOType(unsigned char type)
{
   if (type == 'A')                     //ISO14443_A
   { 
       ClearBitMask(Status2Reg,0x08);

 /*     WriteRawRC(CommandReg,0x20);    //as default   
       WriteRawRC(ComIEnReg,0x80);     //as default
       WriteRawRC(DivlEnReg,0x0);      //as default
       WriteRawRC(ComIrqReg,0x04);     //as default
       WriteRawRC(DivIrqReg,0x0);      //as default
       WriteRawRC(Status2Reg,0x0);//80    //trun off temperature sensor
       WriteRawRC(WaterLevelReg,0x08); //as default
       WriteRawRC(ControlReg,0x20);    //as default
       WriteRawRC(CollReg,0x80);    //as default
*/
       WriteRawRC(ModeReg,0x3D);//3F
/*       WriteRawRC(TxModeReg,0x0);      //as default???
       WriteRawRC(RxModeReg,0x0);      //as default???
       WriteRawRC(TxControlReg,0x80);  //as default???

       WriteRawRC(TxSelReg,0x10);      //as default???
   */
       WriteRawRC(RxSelReg,0x86);//84
 //      WriteRawRC(RxThresholdReg,0x84);//as default
 //      WriteRawRC(DemodReg,0x4D);      //as default

 //      WriteRawRC(ModWidthReg,0x13);//26
       WriteRawRC(RFCfgReg,0x7F);   //4F
    /*   WriteRawRC(GsNReg,0x88);        //as default???
       WriteRawRC(CWGsCfgReg,0x20);    //as default???
       WriteRawRC(ModGsCfgReg,0x20);   //as default???
*/
          WriteRawRC(TReloadRegL,30);//tmoLength);// TReloadVal = 'h6a =tmoLength(dec) 
       WriteRawRC(TReloadRegH,0);
       WriteRawRC(TModeReg,0x8D);
       WriteRawRC(TPrescalerReg,0x3E);
       

  //     PcdSetTmo(106);
       DelayMs(1);
       PcdAntennaOn();
   }
   else{ return -1; }
   
   return MI_OK;
}
/
//功    能：读RC632寄存器
//参数说明：Address[IN]:寄存器地址
//返    回：读出的值
/
unsigned char ReadRawRC(unsigned char Address)
{
     unsigned char i, ucAddr;
     unsigned char ucResult=0;

     MF522_SCK = 0;
     MF522_NSS = 0;
     ucAddr = ((Address<<1)&0x7E)|0x80;

     for(i=8;i>0;i--)
     {
         MF522_SI = ((ucAddr&0x80)==0x80);
         MF522_SCK = 1;
         ucAddr <<= 1;
         MF522_SCK = 0;
     }

     for(i=8;i>0;i--)
     {
         MF522_SCK = 1;
         ucResult <<= 1;
         ucResult|=(bit)MF522_SO;
         MF522_SCK = 0;
     }

     MF522_NSS = 1;
     MF522_SCK = 1;
     return ucResult;
}

/
//功    能：写RC632寄存器
//参数说明：Address[IN]:寄存器地址
//          value[IN]:写入的值
/
void WriteRawRC(unsigned char Address, unsigned char value)
{  
    unsigned char i, ucAddr;

    MF522_SCK = 0;
    MF522_NSS = 0;
    ucAddr = ((Address<<1)&0x7E);

    for(i=8;i>0;i--)
    {
        MF522_SI = ((ucAddr&0x80)==0x80);
        MF522_SCK = 1;
        ucAddr <<= 1;
        MF522_SCK = 0;
    }

    for(i=8;i>0;i--)
    {
        MF522_SI = ((value&0x80)==0x80);
        MF522_SCK = 1;
        value <<= 1;
        MF522_SCK = 0;
    }
    MF522_NSS = 1;
    MF522_SCK = 1;
}

/
//功    能：置RC522寄存器位
//参数说明：reg[IN]:寄存器地址
//          mask[IN]:置位值
/
void SetBitMask(unsigned char reg,unsigned char mask)  
{
    char tmp = 0x0;
    tmp = ReadRawRC(reg);
    WriteRawRC(reg,tmp | mask);  // set bit mask
}

/
//功    能：清RC522寄存器位
//参数说明：reg[IN]:寄存器地址
//          mask[IN]:清位值
/
void ClearBitMask(unsigned char reg,unsigned char mask)  
{
    char tmp = 0x0;
    tmp = ReadRawRC(reg);
    WriteRawRC(reg, tmp & ~mask);  // clear bit mask
} 

/
//功    能：通过RC522和ISO14443卡通讯
//参数说明：Command[IN]:RC522命令字
//          pInData[IN]:通过RC522发送到卡片的数据
//          InLenByte[IN]:发送数据的字节长度
//          pOutData[OUT]:接收到的卡片返回数据
//          *pOutLenBit[OUT]:返回数据的位长度
/
char PcdComMF522(unsigned char Command, 
                 unsigned char *pInData, 
                 unsigned char InLenByte,
                 unsigned char *pOutData, 
                 unsigned int  *pOutLenBit)
{
    char status = MI_ERR;
    unsigned char irqEn   = 0x00;
    unsigned char waitFor = 0x00;
    unsigned char lastBits;
    unsigned char n;
    unsigned int i;
    switch (Command)
    {
       case PCD_AUTHENT:
          irqEn   = 0x12;
          waitFor = 0x10;
          break;
       case PCD_TRANSCEIVE:
          irqEn   = 0x77;
          waitFor = 0x30;
          break;
       default:
         break;
    }
   
    WriteRawRC(ComIEnReg,irqEn|0x80);
    ClearBitMask(ComIrqReg,0x80);
    WriteRawRC(CommandReg,PCD_IDLE);
    SetBitMask(FIFOLevelReg,0x80);
    
    for (i=0; i<InLenByte; i++)
    {   WriteRawRC(FIFODataReg, pInData[i]);    }
    WriteRawRC(CommandReg, Command);
   
    
    if (Command == PCD_TRANSCEIVE)
    {    SetBitMask(BitFramingReg,0x80);  }
    
//    i = 600;//根据时钟频率调整，操作M1卡最大等待时间25ms
 i = 2000;
    do 
    {
         n = ReadRawRC(ComIrqReg);
         i--;
    }
    while ((i!=0) && !(n&0x01) && !(n&waitFor));
    ClearBitMask(BitFramingReg,0x80);
          
    if (i!=0)
    {    
         if(!(ReadRawRC(ErrorReg)&0x1B))
         {
             status = MI_OK;
             if (n & irqEn & 0x01)
             {   status = MI_NOTAGERR;   }
             if (Command == PCD_TRANSCEIVE)
             {
                   n = ReadRawRC(FIFOLevelReg);
                  lastBits = ReadRawRC(ControlReg) & 0x07;
                if (lastBits)
                {   *pOutLenBit = (n-1)*8 + lastBits;   }
                else
                {   *pOutLenBit = n*8;   }
                if (n == 0)
                {   n = 1;    }
                if (n > MAXRLEN)
                {   n = MAXRLEN;   }
                for (i=0; i<n; i++)
                {   pOutData[i] = ReadRawRC(FIFODataReg);    }
            }
         }
         else
         {   status = MI_ERR;   }
        
   }
   

   SetBitMask(ControlReg,0x80);           // stop timer now
   WriteRawRC(CommandReg,PCD_IDLE); 
   return status;
}


/
//开启天线  
//每次启动或关闭天险发射之间应至少有1ms的间隔
/
void PcdAntennaOn()
{
    unsigned char i;
    i = ReadRawRC(TxControlReg);
    if (!(i & 0x03))
    {
        SetBitMask(TxControlReg, 0x03);
    }
}


/
//关闭天线
/
void PcdAntennaOff()
{
    ClearBitMask(TxControlReg, 0x03);
}

step.c

#include<reg52.h>
#define Step 500
void step()
{
    unsigned int i;
    P3 = 0x01;//0000 0001
    for(i = 0;i<Step;i++);
    P3 = 0x02;//0000 0010
    for(i = 0;i<Step;i++);
    P3 = 0x04;//0000 0100
    for(i = 0;i<Step;i++);
    P3 = 0x08;//0000 1000
    for(i = 0;i<Step;i++);
     
}

12864.c

#include"12864.h"
#include<reg52.h>

sbit lcdrs = P2^4;//数据还是指令选择端口
sbit lcdwr = P2^5;//读写选择端口
sbit lcden = P2^6;//使能端口
sbit PSB = P2^1;//串并口选择端口

/*uchar code table1[]={"Welcome!!"};
uchar code table2[]={"Psw:"};
uchar code table3[] ={"Open"};
uchar code table4[] ={"Error try again!"};
uchar code table5[] ={"Error 3 times!!"};*/

void delay1ms(uint x)//延时函数
{
    uint i,j;
    for(i= x;i>0;i--)
        for(j=110;j>0;j--);
}

void write_cmd(uchar cmd)//写指令函数
{
    lcdrs = 0;
    lcdwr = 0;
    P0 = cmd;
    lcden = 1;
    delay1ms(5);//
    lcden = 0;
}

void write_date(uchar date)//写数据函数
{
    lcdrs = 1;
    lcdwr = 0;
    P0 = date;
    lcden = 1;
    delay1ms(5);//
    lcden = 0;
}

void write_string(uchar *str)//写入字符串函数
{
    
    
    for(;*str!='';str++)
    {
            write_date(*str);
            delay1ms(2);
    }
    
}

void init_12864()
{
    PSB = 1;//并口方式传送数据
    write_cmd(0x30);//基本指令操作
    write_cmd(0x0c);//开显示，关光标
    write_cmd(0x01);//清除lcd的显示内容
}

void lcd_putpic(unsigned char code *img)//画图函数
{
    uint i,j;
    //画图上半部分
    for(i = 0;i<32;i++)
    {
        write_cmd(0x80+i);//
        write_cmd(0x80);//
        for(j=0;j<16;j++)
        {
            write_date(*img);
            img++;
        }
    }
    //画下部分的屏幕   
    for(i = 0;i<32;i++)
    {
        write_cmd(0x80+i);//设定列
        write_cmd(0x88);//从第三行开始画图
        for(j=0;j<16;j++)
        {
            write_date(*img);
            img++;
        }
    }
}

void setpic()//设定画图功能的函数
{
    write_cmd(0x36);//设定画图其画图功能
    delay1ms(5);
}

void lcd_pos(uchar x,uchar y)//设定显示位置的函数
{
    uchar pos;
    if(x==0)
        x=0x80;
    else 
        if(x==1)
            x=0x90;
        else 
            if(x==2)
                x=0x88;
            else 
                if(x==3)
                    x=0x98;
                pos=x+y;
                write_cmd(pos);
}

hongwai.c

#include<reg52.h>
#include"12864.h"
sbit led = P3^5;
sbit hongwai = P3^6;

uchar flag;

uchar hwgy()
{
    hongwai = 1;
   
    while(1)
     {            
         if(hongwai ==1)//检测到高电平的话，延时一下
         {
             delay1ms(20);
             if(hongwai == 1)//再次检测一下
             {
                 led = 0;
                 flag = 1;
                 return flag;
                 break;
             }
        }
        else
        {
        led = 1;
        flag = 0;
        return flag;
        }
        
   }

}

头文件：

12864.h

#ifndef __12864_H__
#define _12864_H__

#include<reg52.h>
typedef unsigned int uint;
typedef unsigned char uchar;

/*extern uchar code table1[] ;
extern uchar code table2[] ;
extern uchar code table3[] ;
extern uchar code table4[] ;
extern uchar code table5[] ;*/


extern unsigned char code pic1[];
void delay1ms(uint x);//延时函数
void write_cmd(uchar cmd);//写指令函数
void write_date(uchar date);//写数据函数

void init_12864();
void lcd_putpic(unsigned char code *img);//画图函数
void setpic();//设定画图功能的函数
void lcd_pos(uchar x,uchar y);//设定显示位置的函数
void write_string(uchar *str);

//红外感应模块
uchar hwgy();
#endif

main.h

#ifndef __MIAN_H_
#define __MIAN_H_

//
//端口定义
/
//MFRC500
sbit     MF522_RST  =    P1^1;                   //RC500??
sbit     MF522_NSS  =    P1^7;
sbit     MF522_SCK  =    P1^6;
sbit     MF522_SI   =    P1^5;
sbit     MF522_SO   =    P1^2;
//???
sbit     LED_GREEN  =    P1^0;  
/
//函数原型
/
void InitializeSystem(); 
void step();                                  
                                    

#define  OSC_FREQ        7372800L
#define  RCAP2_50us      65536L - OSC_FREQ/40417L
#define  RCAP2_1ms       65536L - OSC_FREQ/2000L
#define  RCAP2_10ms      65536L - OSC_FREQ/1200L
#define  TIME0_500us     65536L - OSC_FREQ/8000L
#define  TIME0_10ms      65536L - OSC_FREQ/200
void DelayMs(unsigned int _MS);

#endif

rc522.h

/
//函数原型
/
char PcdReset(void);
void PcdAntennaOn(void);
void PcdAntennaOff(void);
char PcdRequest(unsigned char req_code,unsigned char *pTagType);   
char PcdAnticoll(unsigned char *pSnr);
char PcdSelect(unsigned char *pSnr);         
char PcdAuthState(unsigned char auth_mode,unsigned char addr,unsigned char *pKey,unsigned char *pSnr);     
char PcdRead(unsigned char addr,unsigned char *pData);     
char PcdWrite(unsigned char addr,unsigned char *pData);    
char PcdValue(unsigned char dd_mode,unsigned char addr,unsigned char *pValue);   
char PcdBakValue(unsigned char sourceaddr, unsigned char goaladdr);                                 
char PcdHalt(void);
char PcdComMF522(unsigned char Command, 
                 unsigned char *pInData, 
                 unsigned char InLenByte,
                 unsigned char *pOutData, 
                 unsigned int  *pOutLenBit);
void CalulateCRC(unsigned char *pIndata,unsigned char len,unsigned char *pOutData);
void WriteRawRC(unsigned char Address,unsigned char value);
unsigned char ReadRawRC(unsigned char Address); 
void SetBitMask(unsigned char reg,unsigned char mask); 
void ClearBitMask(unsigned char reg,unsigned char mask); 
char M500PcdConfigISOType(unsigned char type);
/
//MF522命令字
/
#define PCD_IDLE              0x00               //取消当前命令
#define PCD_AUTHENT           0x0E               //验证密钥
#define PCD_RECEIVE           0x08               //接收数据
#define PCD_TRANSMIT          0x04               //发送数据
#define PCD_TRANSCEIVE        0x0C               //发送并接收数据
#define PCD_RESETPHASE        0x0F               //复位
#define PCD_CALCCRC           0x03               //CRC计算

/
//Mifare_One卡片命令字
/
#define PICC_REQIDL           0x26               //寻天线区内未进入休眠状态
#define PICC_REQALL           0x52               //寻天线区内全部卡
#define PICC_ANTICOLL1        0x93               //防冲撞
#define PICC_ANTICOLL2        0x95               //防冲撞
#define PICC_AUTHENT1A        0x60               //验证A密钥
#define PICC_AUTHENT1B        0x61               //验证B密钥
#define PICC_READ             0x30               //读块
#define PICC_WRITE            0xA0               //写块
#define PICC_DECREMENT        0xC0               //扣款
#define PICC_INCREMENT        0xC1               //充值
#define PICC_RESTORE          0xC2               //调块数据到缓冲区
#define PICC_TRANSFER         0xB0               //保存缓冲区中数据
#define PICC_HALT             0x50               //休眠

/
//MF522 FIFO长度定义
/
#define DEF_FIFO_LENGTH       64                 //FIFO size=64byte

/
//MF522寄存器定义
/
// PAGE 0
#define     RFU00                 0x00    
#define     CommandReg            0x01    
#define     ComIEnReg             0x02    
#define     DivlEnReg             0x03    
#define     ComIrqReg             0x04    
#define     DivIrqReg             0x05
#define     ErrorReg              0x06    
#define     Status1Reg            0x07    
#define     Status2Reg            0x08    
#define     FIFODataReg           0x09
#define     FIFOLevelReg          0x0A
#define     WaterLevelReg         0x0B
#define     ControlReg            0x0C
#define     BitFramingReg         0x0D
#define     CollReg               0x0E
#define     RFU0F                 0x0F
// PAGE 1     
#define     RFU10                 0x10
#define     ModeReg               0x11
#define     TxModeReg             0x12
#define     RxModeReg             0x13
#define     TxControlReg          0x14
#define     TxAutoReg             0x15
#define     TxSelReg              0x16
#define     RxSelReg              0x17
#define     RxThresholdReg        0x18
#define     DemodReg              0x19
#define     RFU1A                 0x1A
#define     RFU1B                 0x1B
#define     MifareReg             0x1C
#define     RFU1D                 0x1D
#define     RFU1E                 0x1E
#define     SerialSpeedReg        0x1F
// PAGE 2    
#define     RFU20                 0x20  
#define     CRCResultRegM         0x21
#define     CRCResultRegL         0x22
#define     RFU23                 0x23
#define     ModWidthReg           0x24
#define     RFU25                 0x25
#define     RFCfgReg              0x26
#define     GsNReg                0x27
#define     CWGsCfgReg            0x28
#define     ModGsCfgReg           0x29
#define     TModeReg              0x2A
#define     TPrescalerReg         0x2B
#define     TReloadRegH           0x2C
#define     TReloadRegL           0x2D
#define     TCounterValueRegH     0x2E
#define     TCounterValueRegL     0x2F
// PAGE 3      
#define     RFU30                 0x30
#define     TestSel1Reg           0x31
#define     TestSel2Reg           0x32
#define     TestPinEnReg          0x33
#define     TestPinValueReg       0x34
#define     TestBusReg            0x35
#define     AutoTestReg           0x36
#define     VersionReg            0x37
#define     AnalogTestReg         0x38
#define     TestDAC1Reg           0x39  
#define     TestDAC2Reg           0x3A   
#define     TestADCReg            0x3B   
#define     RFU3C                 0x3C   
#define     RFU3D                 0x3D   
#define     RFU3E                 0x3E   
#define     RFU3F          0x3F

/
//和MF522通讯时返回的错误代码
/
#define MI_OK                          0
#define MI_NOTAGERR                    (-1)
#define MI_ERR                         (-2)

 

完整版本的程序：请见：http://download.csdn.net/detail/generoius/6700269

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