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Adding ARYGON ADRA-USB/ADRB-USB reader support, part 2

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This commit is contained in:
Roel Verdult 2009-06-03 08:11:28 +00:00
parent 3c2f6a327d
commit 5631a56032
2 changed files with 174 additions and 0 deletions
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139
src/dev_arygon.c Normal file
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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "dev_arygon.h"
#include "rs232.h"
#include "bitutils.h"
#ifdef _WIN32
#define SERIAL_STRING "COM"
#endif
#ifdef _LINUX
#define SERIAL_STRING "/dev/ttyusb"
#endif
#ifdef __APPLE__
#define SERIAL_STRING "/dev/tty.SLAB_USBtoUART"
#endif
#define BUFFER_LENGTH 256
#define USB_TIMEOUT 30000
static byte abtTxBuf[BUFFER_LENGTH] = { 0x32, 0x00, 0x00, 0xff }; // Every packet must start with "00 00 ff"
dev_info* dev_arygon_connect(const ui32 uiIndex)
{
ui32 uiDevNr;
serial_port sp;
char acConnect[BUFFER_LENGTH];
dev_info* pdi = INVALID_DEVICE_INFO;
#ifdef _LIBNFC_VERBOSE_
printf("Trying to find ARYGON device on serial port: %s#\n",SERIAL_STRING);
#endif
// I have no idea how MAC OS X deals with multiple devices, so a quick workaround
for (uiDevNr=0; uiDevNr<MAX_DEVICES; uiDevNr++)
{
#ifdef __APPLE__
strcpy(acConnect,SERIAL_STRING);
sp = rs232_open(acConnect);
#else
sprintf(acConnect,"%s%d",SERIAL_STRING,uiDevNr);
sp = rs232_open(acConnect);
#endif
if ((sp != INVALID_SERIAL_PORT) && (sp != CLAIMED_SERIAL_PORT)) break;
#ifdef _LIBNFC_VERBOSE_
if (sp == INVALID_SERIAL_PORT) printf("invalid serial port: %s\n",acConnect);
if (sp == CLAIMED_SERIAL_PORT) printf("serial port already claimed: %s\n",acConnect);
#endif
}
// Test if we have found a device
if (uiDevNr == MAX_DEVICES) return INVALID_DEVICE_INFO;
#ifdef _LIBNFC_VERBOSE_
printf("Succesfully connected to: %s\n",acConnect);
#endif
// We have a connection
pdi = malloc(sizeof(dev_info));
strcpy(pdi->acName,"ARYGON");
pdi->ct = CT_PN532;
pdi->ds = (dev_spec)sp;
pdi->bActive = true;
pdi->bCrc = true;
pdi->bPar = true;
pdi->ui8TxBits = 0;
return pdi;
}
void dev_arygon_disconnect(dev_info* pdi)
{
rs232_close((serial_port)pdi->ds);
free(pdi);
}
bool dev_arygon_transceive(const dev_spec ds, const byte* pbtTx, const ui32 uiTxLen, byte* pbtRx, ui32* puiRxLen)
{
byte abtRxBuf[BUFFER_LENGTH];
ui32 uiRxBufLen = BUFFER_LENGTH;
ui32 uiPos;
// Packet length = data length (len) + checksum (1) + end of stream marker (1)
abtTxBuf[4] = uiTxLen;
// Packet length checksum
abtTxBuf[5] = BUFFER_LENGTH - abtTxBuf[4];
// Copy the PN53X command into the packet buffer
memmove(abtTxBuf+6,pbtTx,uiTxLen);
// Calculate data payload checksum
abtTxBuf[uiTxLen+6] = 0;
for(uiPos=0; uiPos < uiTxLen; uiPos++)
{
abtTxBuf[uiTxLen+6] -= abtTxBuf[uiPos+6];
}
// End of stream marker
abtTxBuf[uiTxLen+7] = 0;
#ifdef _LIBNFC_VERBOSE_
printf("Tx: ");
print_hex(abtTxBuf,uiTxLen+8);
#endif
if (!rs232_send((serial_port)ds,abtTxBuf,uiTxLen+8)) return false;
if (!rs232_receive((serial_port)ds,abtRxBuf,&uiRxBufLen)) return false;
#ifdef _LIBNFC_VERBOSE_
printf("Rx: ");
print_hex(abtRxBuf,uiRxBufLen);
#endif
// When the answer should be ignored, just return a succesful result
if(pbtRx == null || puiRxLen == null) return true;
// Only succeed when the result is at least 00 00 ff 00 ff 00 00 00 FF xx Fx Dx xx .. .. .. xx 00 (x = variable)
if(uiRxBufLen < 15) return false;
// Remove the preceding and appending bytes 00 00 ff 00 ff 00 00 00 FF xx Fx .. .. .. xx 00 (x = variable)
*puiRxLen = uiRxBufLen - 15;
memcpy(pbtRx, abtRxBuf+13, *puiRxLen);
return true;
}

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src/dev_arygon.h Normal file
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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _LIBNFC_DEV_ARYGON_H_
#define _LIBNFC_DEV_ARYGON_H_
#include "defines.h"
#include "types.h"
// Functions used by developer to handle connection to this device
dev_info* dev_arygon_connect(const ui32 uiIndex);
void dev_arygon_disconnect(dev_info* pdi);
// Callback function used by libnfc to transmit commands to the PN53X chip
bool dev_arygon_transceive(const dev_spec ds, const byte* pbtTx, const ui32 uiTxLen, byte* pbtRx, ui32* puiRxLen);
#endif // _LIBNFC_DEV_ARYGON_H_