pcd.c

另外一个RC531非接触式读卡器的全部源代码

#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <asm/hardware.h>
#include "rc531.h"

int fd531;

// Access IO bank 0
int r5310(int reg)
{
 return *(unsigned char*)(reg+0x0a000000);
}

void w5310(int reg, int data)
{
 *(unsigned char*)(reg+0x0a000000) = data;
}

// Access IO bank
int r531(int reg)
{
 *(unsigned char*)0x0a000000 = ((reg>>3)&0x07)|0x80;
 return *(unsigned char*)((reg&0x07)+0x0a000000);
}

void w531(int reg, int data)
{
 *(unsigned char*)0x0a000000 = ((reg>>3)&0x07)|0x80;
 *(unsigned char*)((reg&0x07)+0x0a000000) = data;
}

// PCD function

int pcd_reset(int type)
{
/*
 int pc;

 pc = PDATC;
 pc &= 0xf7ff;
 PDATC = pc;
 usleep(25000);

 pc = PDATC;
 pc |= 0x0800;
 PDATC = pc;
 usleep(2500);

 pc = PDATC;
 pc &= 0xf7ff;
 PDATC = pc;

 while((r5310(0x01)&0x3f)!=0x3f);
 while(r5310(0x01)&0x3f);

 w5310(0x00, 0x80);
 if(r5310(0x01))
     return -1;
 else
     return 0;
*/

 //Set timeout to 2ms
 w531(0x2b, 0x06);
 w531(0x2a, 0x0a);
 w531(0x2c, 0x1a);

 if(type==RESET_TYPEA){
     //Type A Register Reset
     w531(0x11, 0x51);
     w531(0x13, 0x3f);
     w531(0x14, 0x19);
     w531(0x17, 0x3b);
     w531(0x19, 0x73);
     w531(0x1a, 0x28);
     w531(0x1c, 0xff);
     w531(0x1d, 0x3e);
     w531(0x22, 0x0f);
     w531(0x23, 0x63);
     w531(0x24, 0x63);
 }else{
     //Type B Register Reset
     w531(0x11, 0x4b);
     w531(0x13, 0x06);
     w531(0x14, 0x20);
     w531(0x17, 0x23);
     w531(0x19, 0x73);
     w531(0x1a, 0x19);
     w531(0x1c, 0x44);
     w531(0x1d, 0x3e);
     w531(0x22, 0x2c);
     w531(0x23, 0xff);
     w531(0x24, 0xff);
 }

 return 0;
}

int pcd_open(void)
{
 fd531 = open("/dev/rc531", O_RDWR);
 if(fd531<0){
     printf("Cannot open rc531!\n");
     exit(-1);
 }

 return 0;
}

int pcd_close(void)
{
 close(fd531);
 return 0;
}

int pcd_writee2(int addr, char *buf, int len)
{
 int i;
 char sbuf[128], rbuf[8];
 struct rc531_cmd cmd;

 cmd.sendbuf = sbuf;
 cmd.recvbuf = rbuf;
 cmd.cmd = 0x01;
 cmd.timeout = 0x1a;
 cmd.bytesent = len+2;

 *(int*)sbuf = addr;
 for(i=0; i<len; i++){
     sbuf[i+2] = buf[i];
 }
 
 ioctl(fd531, RC531_CMD, &cmd);

 return cmd.status;
}

int pcd_reade2(int addr, char *buf, int len)
{
 char sbuf[8];
 struct rc531_cmd cmd;

 cmd.sendbuf = sbuf;
 cmd.recvbuf = buf;
 cmd.cmd = 0x03;
 cmd.timeout = 0x1a;
 cmd.bytesent = 3;

 *(int*)sbuf = addr;
 sbuf[2] = len;

 ioctl(fd531, RC531_CMD, &cmd);

 return cmd.status;
}

int pcd_loadconfig(int addr)
{
 char sbuf[8], rbuf[8];
 struct rc531_cmd cmd;

 cmd.sendbuf = sbuf;
 cmd.recvbuf = rbuf;
 cmd.cmd = 0x07;
 cmd.timeout = 0x1a;
 cmd.bytesent = 2;

 *(int*)sbuf = addr;

 ioctl(fd531, RC531_CMD, &cmd);

 return cmd.status;
}

void mferror(int code)
{
 switch(code){
 case E_OK:
     printf("OK!\n");
     break;
 case E_COLL:
     printf("COLL ERROR!\n");
     break;
 case E_PARITY:
     printf("PARITY ERROR!\n");
     break;
 case E_FRAME:
     printf("FRAME ERROR!\n");
     break;
 case E_CRC:
     printf("CRC ERROR!\n");
     break;
 case E_OVERFLOW:
     printf("FIFO OVERFLOW\n");
     break;
 case E_ACCESS:
     printf("ACCESS ERROR!\n");
     break;
 case E_KEY:
     printf("LOADKEY ERROR!\n");
     break;
 case E_TIMEOUT:
     printf("TIMEOUT!\n");
     break;
 case E_BIT:
     printf("BIT COUNT ERROR!\n");
     break;
 case E_BYTE:
     printf("BYTE COUNT ERROR!\n");
     break;
 case E_AUTH:
     printf("AUTHENT ERROR!\n");
     break;
 case E_NAUTH:
     printf("NOT AUTHENT!\n");
     break;
 case E_CODE:
     printf("CODE ERROR!\n");
     break;
 case E_WRITE:
     printf("WRITE ERROR!\n");
     break;
 case E_VALUE:
     printf("VALUE ERROR!\n");
     break;
 case E_RESET:
     printf("RESET ERROR!\n");
     break;
 default:
     printf("UNKOWN ERROR: %04x\n", code);
 };
}