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librfid/src/rfid_layer2_iso15693.c

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/* ISO 15693 anticollision implementation
*
* (C) 2005-2008 by Harald Welte <laforge@gnumonks.org>
* (C) 2007 by Bjoern Riemer <bjoern.riemer@web.de>
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
//#define DEBUG_LIBRFID
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <librfid/rfid.h>
#include <librfid/rfid_layer2.h>
#include <librfid/rfid_reader.h>
#include <librfid/rfid_layer2_iso15693.h>
/*struct iso15693_request_read {
struct iso15693_request head;
u_int64_t uid;
u_int8_t blocknum;
} __attribute__ ((packed));*/
struct iso15693_request_adressed {
struct iso15693_request head;
u_int64_t uid;
} __attribute__ ((packed));
struct iso15693_request_block_addressed {
struct iso15693_request head;
u_int64_t uid;
u_int8_t blocknum;
u_int8_t data[0];
} __attribute__ ((packed));
struct iso15693_request_block_selected {
struct iso15693_request head;
u_int8_t blocknum;
u_int8_t data[0];
} __attribute__ ((packed));
struct iso15693_err_resp {
struct iso15693_response head;
u_int8_t error;
unsigned char crc[2];
} __attribute__ ((packed));
struct iso15693_response_sec {
struct iso15693_response head;
u_int8_t block_sec;
u_int8_t data[];
} __attribute__ ((packed));
#define ISO15693_BLOCK_SIZE_MAX (256/8)
#define ISO15693_RESP_SIZE_MAX (4+ISO15693_BLOCK_SIZE_MAX)
const unsigned int iso15693_timing[2][5] = {
[ISO15693_T_SLOW] = {
[ISO15693_T1] = 1216, /* max time after VCD EOF before VICC SOF */
[ISO15693_T2] = 1200, /* min time before VCD EOF after VICC response */
[ISO15693_T3] = 1502, /* min time after VCD EOF before next EOF if no VICC response */
[ISO15693_T4] = 1216, /* time after wich VICC transmits after VCD EOF */
[ISO15693_T4_WRITE]=20000, /* time after wich VICC transmits after VCD EOF */
},
[ISO15693_T_FAST] = {
[ISO15693_T1] = 304, /* max time after VCD EOF before VICC SOF */
[ISO15693_T2] = 300, /* min time before VCD EOF after VICC response */
[ISO15693_T3] = 602, /* min time after VCD EOF before next EOF if no VICC response */
[ISO15693_T4] = 304, /* time after wich VICC transmits after VCD EOF */
[ISO15693_T4_WRITE]=20000, /* time after wich VICC transmits after VCD EOF */
},
};
char *
iso15693_get_response_error_name(u_int8_t error){
switch (error){
case RFID_15693_ERR_NOTSUPP:
return "ERR_NOTSUPP";
case RFID_15693_ERR_INVALID: /* command not recognized */
return "ERR_INVALID";
case RFID_15693_ERR_UNKNOWN: /* unknown error */
return "ERR_UNKNOWN";
case RFID_15693_ERR_NOTSUPP_OPTION:
return "ERR_NotSuppOpt";
case RFID_15693_ERR_BLOCK_NA: /* block not available */
return "ERR_BLOCK_N";
case RFID_15693_ERR_BLOCK_LOCKED:
return "ERR_BLOCK_LOCKE";
case RFID_15693_ERR_BLOCK_LOCKED_CH:
return "ERR_BLOCK_LOCKED_CH";
case RFID_15693_ERR_BLOCK_NOTPROG:
return "ERR_BLOCK_NOTPROG";
case RFID_15693_ERR_BLOCK_NOTLOCK:
return "ERR_BLOCK_NOTLOCK";
case 0xA0: /* until 0xDF*/
return "Custom Command error Code";
case 0xE0:
default:
return "Undef.";
}
}
static int iso15693_transceive(struct rfid_layer2_handle *handle,
enum rfid_frametype frametype,
const unsigned char *tx_buf, unsigned int tx_len,
unsigned char *rx_buf, unsigned int *rx_len,
u_int64_t timeout, unsigned int flags)
{
return handle->rh->reader->transceive(handle->rh, frametype, tx_buf,
tx_len, rx_buf, rx_len, timeout, flags);
}
/* Transmit an anticollission frame */
static int
iso15693_transceive_acf(struct rfid_layer2_handle *handle,
const struct iso15693_anticol_cmd *acf,
unsigned int acf_len,
struct iso15693_anticol_resp *resp,
unsigned int *rx_len, char *bit_of_col)
{
const struct rfid_reader *rdr = handle->rh->reader;
if (!rdr->iso15693.transceive_ac)
return -1;
return rdr->iso15693.transceive_ac(handle->rh, acf, acf_len, resp, rx_len, bit_of_col);
}
int
iso15693_read_block(struct rfid_layer2_handle *handle,
u_int8_t blocknr, u_int32_t *data, unsigned int len,
unsigned char *block_sec_out)
{
union {
struct iso15693_request_block_selected sel;
struct iso15693_request_block_addressed addr;
} tx_req;
int ret;
unsigned char *errstr;
unsigned int rx_len, tx_len,timeout;
u_int8_t resp[ISO15693_RESP_SIZE_MAX];
struct iso15693_err_resp *rx_err;
struct iso15693_response *rx_pkt;
struct iso15693_response_sec *rx_pkt_sec;
rx_pkt_sec = (struct iso15693_response *)&resp[0];
rx_pkt = (struct iso15693_response *)&resp[0];
rx_err = (struct iso15693_err_resp *)&resp[0];
memset(&tx_req,0,sizeof(tx_req));
rx_len = sizeof(resp);
tx_req.sel.head.command = ISO15693_CMD_READ_BLOCK_SINGLE;
if (handle->priv.iso15693.vicc_fast){
tx_req.sel.head.flags |= RFID_15693_F_RATE_HIGH;
timeout=iso15693_timing[ISO15693_T_FAST][ISO15693_T4];
}else
timeout=iso15693_timing[ISO15693_T_SLOW][ISO15693_T4];
if (handle->priv.iso15693.vicc_two_subc)
tx_req.sel.head.flags |= RFID_15693_F_SUBC_TWO;
if (block_sec_out!=NULL)
tx_req.sel.head.flags |= RFID_15693_F4_CUSTOM;
if (handle->priv.iso15693.state==RFID_15693_STATE_SELECTED) {
tx_len = sizeof(struct iso15693_request_block_selected);
tx_req.sel.blocknum = blocknr;
tx_req.sel.head.flags |= RFID_15693_F4_SELECTED;
} else {
tx_len = sizeof(struct iso15693_request_block_addressed);
memcpy(&tx_req.addr.uid, handle->uid, ISO15693_UID_LEN);
tx_req.addr.head.flags |= RFID_15693_F4_ADDRESS;
tx_req.addr.blocknum = blocknr;
}
//DEBUGP("sizeof: addr: %d sel:%d\n",sizeof(struct iso15693_request_read_addressed),sizeof(struct iso15693_request_read_selected));
DEBUGP("tx_len=%u", tx_len); DEBUGPC(" rx_len=%u\n",rx_len);
ret = iso15693_transceive(handle, RFID_15693_FRAME, (u_int8_t*)&tx_req,
tx_len, resp, &rx_len, timeout, 0);
if (ret==-ETIMEDOUT)
errstr="(TIMEOUT)";
else if (ret==-EIO)
errstr="(EIO)";
else
errstr="";
DEBUGP("length: %d rx_len: %d ret: %d%s\n",len,rx_len,ret,errstr);
if (ret < 0)
return ret;
if (rx_len > len+1)
return -1;
DEBUGP("error_flag: %d", rx_pkt->flags&RFID_15693_RF_ERROR);
if (rx_pkt->flags & RFID_15693_RF_ERROR) {
DEBUGPC(" -> error: %02x '%s'\n", rx_err->error,
iso15693_get_response_error_name(rx_err->error));
return -1;
} else if (block_sec_out != NULL) {
DEBUGPC(" block_sec_stat: 0x%02x\n",rx_pkt_sec->block_sec);
memcpy(data, rx_pkt_sec->data, rx_len-2);
return rx_len-2;
} else {
memcpy(data, rx_pkt->data, rx_len-1); /* FIXME rc-3 in case of CRC */
return rx_len-1;
}
}
int
iso15693_write_block(struct rfid_layer2_handle *handle,
u_int8_t blocknr, u_int32_t *data, unsigned int len)
{
int ret;
unsigned char *errstr;
unsigned int rx_len, tx_len,timeout;
union{
struct iso15693_request_block_selected sel;
struct iso15693_request_block_addressed addr;
u_int32_t buf[sizeof(struct iso15693_request_block_addressed)+ISO15693_BLOCK_SIZE_MAX];
} tx_req;
u_int8_t resp[ISO15693_RESP_SIZE_MAX];
struct iso15693_response *rx_pkt;
struct iso15693_err_resp *rx_err;
rx_pkt = (struct iso15693_response *)&resp[0];
rx_err = (struct iso15693_err_resp *)&resp[0];
rx_len = sizeof(resp);
if (len > ISO15693_BLOCK_SIZE_MAX)
return -1;
//return -1;
memset(&tx_req,0,sizeof(tx_req));
tx_req.sel.head.command = ISO15693_CMD_WRITE_BLOCK_SINGLE;
if (handle->priv.iso15693.vicc_fast) {
tx_req.sel.head.flags |= RFID_15693_F_RATE_HIGH;
timeout = iso15693_timing[ISO15693_T_FAST][ISO15693_T4_WRITE];
} else
timeout = iso15693_timing[ISO15693_T_SLOW][ISO15693_T4_WRITE];
if (handle->priv.iso15693.vicc_two_subc)
tx_req.sel.head.flags |= RFID_15693_F_SUBC_TWO;
if (handle->priv.iso15693.state == RFID_15693_STATE_SELECTED) {
tx_len=sizeof(struct iso15693_request_block_selected)+len;
tx_req.sel.head.flags |= RFID_15693_F4_SELECTED;
tx_req.sel.blocknum = blocknr;
memcpy(&tx_req.sel.data,data,len);
} else {
memcpy(&tx_req.addr.uid, handle->uid, ISO15693_UID_LEN);
tx_len=sizeof(struct iso15693_request_block_addressed)+len;
tx_req.addr.head.flags |= RFID_15693_F4_ADDRESS;
tx_req.addr.blocknum = blocknr;
memcpy(&tx_req.addr.data,data,len);
}
//DEBUGP("sizeof: addr: %d sel:%d\n",sizeof(struct iso15693_request_read_addressed),sizeof(struct iso15693_request_read_selected));
DEBUGP("tx_len=%u", tx_len); DEBUGPC(" rx_len=%u\n",rx_len);
ret = iso15693_transceive(handle, RFID_15693_FRAME, (u_int8_t*)&tx_req,
tx_len, resp, &rx_len, timeout, 0);
if (ret == -ETIMEDOUT)
errstr = "(TIMEOUT)";
else if (ret == -EIO)
errstr = "(EIO)";
else
errstr = "";
DEBUGP("length: %d rx_len: %d ret: %d%s\n",len,rx_len,ret,errstr);
if (ret < 0)
return ret;
if (rx_len > len+1)
return -1;
DEBUGP("error_flag: %d", rx_pkt->flags & RFID_15693_RF_ERROR);
if (rx_pkt->flags & RFID_15693_RF_ERROR) {
DEBUGPC(" -> error: %02x '%s'\n", rx_err->error,
iso15693_get_response_error_name(rx_err->error));
return -1;
} else {
//DEBUGPC(" block_sec_stat: 0x%02x\n",rx_pkt->data[0]);
//memcpy(data, rx_pkt->data, rx_len-1); /* FIXME rc-3 in case of CRC */
//return rx_len-1;
return 0;
}
}
#if 0
static int
iso15693_lock_block()
{
}
#endif
/* Helper function to build an ISO 15693 anti collision frame */
static int
iso15693_build_acf(u_int8_t *target, u_int8_t flags, u_int8_t afi,
u_int8_t mask_len, u_int8_t *mask)
{
struct iso15693_request *req = (struct iso15693_request *) target;
int i = 0, j, mask_bytes;
u_int8_t byte=0;
void* mask_p;
req->flags = flags;
req->command = ISO15693_CMD_INVENTORY;
if (flags & RFID_15693_F5_AFI_PRES)
req->data[i++] = afi;
req->data[i++] = mask_len;
mask_bytes = mask_len/8 + (mask_len%8)?1:0;
mask_p = &req->data[i];
for (j = 0; j < mask_bytes; j++)
req->data[i++] = mask[j];
byte = 0xFF >> (8-mask_len%8);
req->data[i-1] &= byte;
DEBUGP("mask_len: %d mask_bytes: %d i: %d return: %d mask:%s\n",
mask_len,mask_bytes,i,i + sizeof(*req),rfid_hexdump(mask_p,mask_bytes));
return i + sizeof(*req);
}
static int
iso15693_anticol(struct rfid_layer2_handle *handle)
{
int i, ret, mask_len;
int tx_len, rx_len;
int num_valid = 0;
union {
struct iso15693_anticol_cmd_afi w_afi;
struct iso15693_anticol_cmd no_afi;
} acf;
struct iso15693_anticol_resp resp;
u_int8_t boc;
#define MAX_SLOTS 16
int num_slots = MAX_SLOTS;
u_int8_t uuid_list[MAX_SLOTS][ISO15693_UID_LEN];
int uuid_list_valid[MAX_SLOTS];
u_int8_t flags;
#define MY_NONE 0
#define MY_COLL 1
#define MY_UUID 2
memset(uuid_list_valid, MY_NONE, sizeof(uuid_list_valid));
memset(uuid_list, 0, sizeof(uuid_list));
//memset(&acf, 0, sizeof(acf));
/* FIXME: we can't use multiple slots at this point, since the RC632
* with librfid on the host PC has too much latency between 'EOF pulse
* to mark start of next slot' and 'receive data' commands :( */
flags = RFID_15693_F_INV_TABLE_5;
if (handle->priv.iso15693.vicc_fast)
flags |= RFID_15693_F_RATE_HIGH;
if (handle->priv.iso15693.vicc_two_subc)
flags |= RFID_15693_F_SUBC_TWO;
if (handle->priv.iso15693.single_slot) {
flags |= RFID_15693_F5_NSLOTS_1;
num_slots = 1;
}
if (handle->priv.iso15693.use_afi)
flags |= RFID_15693_F5_AFI_PRES;
#if 1
tx_len = iso15693_build_acf((u_int8_t *)&acf, flags,
handle->priv.iso15693.afi, 0, NULL);
#else
/*FIXME: testcode*/
u_int8_t uid[8]={0x1f, 0x1e, 0x95, 0x01, 0x00, 0x01, 0x04, 0xe0};
//u_int8_t uid[8]={0xe3, 0xe8, 0xf1, 0x01, 0x00, 0x00, 0x07, 0xe0};
tx_len = iso15693_build_acf((u_int8_t *)&acf, flags,
handle->priv.iso15693.afi, 2, uid);
#endif
start_of_ac_loop:
for (i = 0; i < num_slots; i++) {
rx_len = sizeof(resp);
memset(&resp, 0, rx_len);
ret = iso15693_transceive_acf(handle, (u_int8_t *) &acf, tx_len, &resp, &rx_len, &boc);
if (ret == -ETIMEDOUT) {
//DEBUGP("no answer from vicc in slot %d\n", i);
DEBUGP("slot[%d]: timeout\n",i);
uuid_list_valid[i] = MY_NONE;
} else if (ret < 0) {
DEBUGP("slot[%d]: ERROR ret: %d\n", i, ret);
uuid_list_valid[i] = MY_NONE;
} else {
if (ret)
DEBUGP("iso15693_transceive_acf() ret: %d\n",ret);
if (boc) {
DEBUGP("slot[%d]: Collision! bit:%d byte:%d,%d (UID bit:%d byte:%d,%d)\n",
i, boc,boc/8,boc%8,
boc-16,(boc-16)/8,(boc-16)%8);
DEBUGP("Slot[%d]: ret: %d DSFID: %02x UUID: %s\n", i, ret,
resp.dsfid, rfid_hexdump(resp.uuid, ISO15693_UID_LEN));
uuid_list_valid[i]=-boc;
memcpy(uuid_list[i], resp.uuid, ISO15693_UID_LEN);
} else {
DEBUGP("Slot[%d]: ret: %d DSFID: %02x UUID: %s\n", i, ret,
resp.dsfid, rfid_hexdump(resp.uuid, ISO15693_UID_LEN));
uuid_list_valid[i] = MY_UUID;
memcpy(&uuid_list[i][0], resp.uuid, ISO15693_UID_LEN);
memcpy(handle->uid,resp.uuid, ISO15693_UID_LEN);
/* FIXME: move to init_iso15693 */
handle->uid_len = ISO15693_UID_LEN;
return 1;
}
}
}
for (i = 0; i < num_slots; i++) {
if (uuid_list_valid[i] < 0) {
boc=uuid_list_valid[i]*-1;
if (boc>16){
boc=boc-16;
}
else
DEBUGP("slot[%d]:boc is smaller than 2 bytes (collision before uid)!!!!\n",i);
if (boc<65){
tx_len = iso15693_build_acf((u_int8_t *)&acf, flags,
handle->priv.iso15693.afi, boc+1, resp.uuid);
boc=0;
// FIXME: dont use goto
goto start_of_ac_loop;
}else{
DEBUGP("slot[%d]:boc is bigger than 64 (uid size)(collision after uid)\n",i);
memcpy(handle->uid,uuid_list[i],ISO15693_UID_LEN);
/* FIXME: move to init_iso15693 */
handle->uid_len = ISO15693_UID_LEN;
return 1;
}
}
}
#if 0
for (i = 0; i < num_slots; i++) {
if (uuid_list_valid[i] == MY_NONE) {
DEBUGP("slot[%d]: timeout\n",i);
} else if (uuid_list_valid[i] == MY_UUID) {
DEBUGP("slot[%d]: VALID uuid: %s\n", i,
rfid_hexdump(uuid_list[i], ISO15693_UID_LEN));
memcpy(handle->uid, uuid_list[i], ISO15693_UID_LEN);
/* FIXME: move to init_iso15693 */
handle->uid_len = ISO15693_UID_LEN;
num_valid++;
} else if (uuid_list_valid[i] < 0) {
if (boc>16){
boc=boc-16;
}
else
DEBUGP("boc is smaller than 2 bytes (collision before uid)!!!!\n");
uuid_list_valid[i] = -boc;
if (boc<65){
tx_len = iso15693_build_acf((u_int8_t *)&acf, flags,
handle->priv.iso15693.afi, boc+1, resp.uuid);
boc=0;
// FIXME: dont use goto
goto start_of_ac_loop;
}else{
DEBUGP("boc is bigger than 64 (uid size)\n");
uuid_list_valid[i] = MY_UUID;
}
}
}
#endif
if (num_valid == 0)
return -1;
return num_valid;
}
int
iso15693_select(struct rfid_layer2_handle *l2h)
{
struct iso15693_request_adressed tx_req;
int ret;
unsigned int rx_len, tx_len, timeout;
struct {
struct iso15693_response head;
u_int8_t error;
unsigned char crc[2];
} rx_buf;
rx_len = sizeof(rx_buf);
if (l2h->priv.iso15693.vicc_fast) {
tx_req.head.flags |= RFID_15693_F_RATE_HIGH;
timeout = iso15693_timing[ISO15693_T_FAST][ISO15693_T4];
} else
timeout = iso15693_timing[ISO15693_T_SLOW][ISO15693_T4];
tx_req.head.command = ISO15693_CMD_SELECT;
tx_req.head.flags = RFID_15693_F4_ADDRESS;
if (l2h->priv.iso15693.vicc_fast)
tx_req.head.flags |= RFID_15693_F_RATE_HIGH;
if (l2h->priv.iso15693.vicc_two_subc)
tx_req.head.flags |= RFID_15693_F_SUBC_TWO;
memcpy(&tx_req.uid, l2h->uid, ISO15693_UID_LEN);
tx_len = sizeof(tx_req);
DEBUGP("tx_len=%u, rx_len=%u\n", tx_len,rx_len);
ret = iso15693_transceive(l2h, RFID_15693_FRAME, (u_int8_t*)&tx_req,
tx_len, (u_int8_t*)&rx_buf, &rx_len,timeout ,0);
DEBUGP("ret: %d%s, rx_len: %d, error_flag: %d", ret,
(ret==-ETIMEDOUT)?"(TIMEOUT)":"", rx_len,
rx_buf.head.flags&RFID_15693_RF_ERROR);
if (rx_buf.head.flags & RFID_15693_RF_ERROR) {
DEBUGPC(" -> error: %02x '%s'\n", rx_buf.error,
iso15693_get_response_error_name(rx_buf.error));
return -1;
} else {
DEBUGPC(" SELECTED\n");
l2h->priv.iso15693.state = RFID_15693_STATE_SELECTED;
return 0;
}
}
static int
iso15693_stay_quiet(struct rfid_layer2_handle *l2h)
{
struct iso15693_request_adressed tx_req;
int ret;
unsigned int rx_len, tx_len;
struct {
struct iso15693_response head;
u_int8_t error;
unsigned char crc[2];
} rx_buf;
rx_len = sizeof(rx_buf);
tx_req.head.command = ISO15693_CMD_STAY_QUIET;
tx_req.head.flags = RFID_15693_F4_ADDRESS;
if (l2h->priv.iso15693.vicc_fast)
tx_req.head.flags |= RFID_15693_F_RATE_HIGH;
if (l2h->priv.iso15693.vicc_two_subc)
tx_req.head.flags |= RFID_15693_F_SUBC_TWO;
memcpy(&tx_req.uid, l2h->uid, ISO15693_UID_LEN);
tx_len = sizeof(tx_req);
DEBUGP("tx_len=%u", tx_len); DEBUGPC(" rx_len=%u\n",rx_len);
ret = iso15693_transceive(l2h, RFID_15693_FRAME, (u_int8_t*)&tx_req,
tx_len, (u_int8_t*)&rx_buf, &rx_len, 30,0);
l2h->priv.iso15693.state = RFID_15693_STATE_QUIET;
DEBUGP("ret: %d%s, error_flag: %d", ret,(ret==-ETIMEDOUT)?"(TIMEOUT)":"",
rx_buf.head.flags&RFID_15693_RF_ERROR);
if (rx_buf.head.flags&RFID_15693_RF_ERROR)
DEBUGPC(" -> error: %02x\n", rx_buf.error);
else
DEBUGPC("\n");
return 0;
}
static int
iso15693_getopt(struct rfid_layer2_handle *handle,
int optname, void *optval, unsigned int *optlen)
{
unsigned int *val = optval;
u_int8_t *val_u8 = optval;
if (!optlen || !optval || *optlen < sizeof(unsigned int))
return -EINVAL;
*optlen = sizeof(unsigned int);
switch (optname) {
case RFID_OPT_15693_MOD_DEPTH:
if (handle->priv.iso15693.vcd_ask100)
*val = RFID_15693_MOD_100ASK;
else
*val = RFID_15693_MOD_10ASK;
break;
case RFID_OPT_15693_VCD_CODING:
if (handle->priv.iso15693.vcd_out256)
*val = RFID_15693_VCD_CODING_1OUT256;
else
*val = RFID_15693_VCD_CODING_1OUT4;
break;
case RFID_OPT_15693_VICC_SUBC:
if (handle->priv.iso15693.vicc_two_subc)
*val = RFID_15693_VICC_SUBC_DUAL;
else
*val = RFID_15693_VICC_SUBC_SINGLE;
break;
case RFID_OPT_15693_VICC_SPEED:
if (handle->priv.iso15693.vicc_fast)
*val = RFID_15693_VICC_SPEED_FAST;
else
*val = RFID_15693_VICC_SPEED_SLOW;
break;
case RFID_OPT_15693_VCD_SLOTS:
if (handle->priv.iso15693.single_slot)
*val = 1;
else
*val = 16;
break;
case RFID_OPT_15693_USE_AFI:
if (handle->priv.iso15693.use_afi)
*val = 1;
else
*val = 0;
break;
case RFID_OPT_15693_AFI:
*val_u8 = handle->priv.iso15693.afi;
*optlen = sizeof(u_int8_t);
break;
default:
return -EINVAL;
break;
}
return 0;
}
static int
iso15693_setopt(struct rfid_layer2_handle *handle, int optname,
const void *optval, unsigned int optlen)
{
unsigned int val;
if (optlen < sizeof(u_int8_t) || !optval)
return -EINVAL;
if (optlen == sizeof(u_int8_t))
val = *((u_int8_t *) optval);
if (optlen == sizeof(u_int16_t))
val = *((u_int16_t *) optval);
if (optlen == sizeof(unsigned int))
val = *((unsigned int *) optval);
switch (optname) {
case RFID_OPT_15693_MOD_DEPTH:
switch (val) {
case RFID_15693_MOD_10ASK:
handle->priv.iso15693.vcd_ask100 = 0;
break;
case RFID_15693_MOD_100ASK:
handle->priv.iso15693.vcd_ask100 = 1;
break;
default:
return -EINVAL;
}
break;
case RFID_OPT_15693_VCD_CODING:
switch (val) {
case RFID_15693_VCD_CODING_1OUT256:
handle->priv.iso15693.vcd_out256 = 1;
break;
case RFID_15693_VCD_CODING_1OUT4:
handle->priv.iso15693.vcd_out256 = 0;
break;
default:
return -EINVAL;
}
break;
case RFID_OPT_15693_VICC_SUBC:
switch (val) {
case RFID_15693_VICC_SUBC_SINGLE:
handle->priv.iso15693.vicc_two_subc = 0;
break;
case RFID_15693_VICC_SUBC_DUAL:
handle->priv.iso15693.vicc_two_subc = 1;
break;
default:
return -EINVAL;
}
break;
case RFID_OPT_15693_VICC_SPEED:
switch (val) {
case RFID_15693_VICC_SPEED_SLOW:
handle->priv.iso15693.vicc_fast = 0;
break;
case RFID_15693_VICC_SPEED_FAST:
handle->priv.iso15693.vicc_fast = 1;
break;
default:
return -EINVAL;
}
case RFID_OPT_15693_VCD_SLOTS:
switch (val) {
case 16:
handle->priv.iso15693.single_slot = 0;
break;
case 1:
handle->priv.iso15693.single_slot = 1;
break;
default:
return -EINVAL;
}
break;
case RFID_OPT_15693_USE_AFI:
if (val)
handle->priv.iso15693.use_afi = 1;
else
handle->priv.iso15693.use_afi = 0;
break;
case RFID_OPT_15693_AFI:
if (val > 0xff)
return -EINVAL;
handle->priv.iso15693.afi = val;
break;
default:
return -EINVAL;
}
return 0;
}
static int transceive_inventory(struct rfid_layer2_handle *l2h)
{
return -1;
}
static struct rfid_layer2_handle *
iso15693_init(struct rfid_reader_handle *rh)
{
int ret;
struct rfid_layer2_handle *h = malloc_layer2_handle(sizeof(*h));
if (!h)
return NULL;
h->l2 = &rfid_layer2_iso15693;
h->rh = rh;
h->priv.iso15693.state = ISO15693_STATE_NONE;
h->priv.iso15693.vcd_ask100 = 1; /* 100ASK is easier to generate */
h->priv.iso15693.vicc_two_subc = 0;
h->priv.iso15693.vicc_fast = 1;
h->priv.iso15693.single_slot = 1;
h->priv.iso15693.vcd_out256 = 0;
h->priv.iso15693.use_afi = 0; /* not all VICC support AFI */
h->priv.iso15693.afi = 0;
ret = h->rh->reader->init(h->rh, RFID_LAYER2_ISO15693);
if (ret < 0) {
free_layer2_handle(h);
return NULL;
}
return h;
}
static int
iso15693_fini(struct rfid_layer2_handle *handle)
{
free_layer2_handle(handle);
return 0;
}
const struct rfid_layer2 rfid_layer2_iso15693 = {
.id = RFID_LAYER2_ISO15693,
.name = "ISO 15693",
.fn = {
.init = &iso15693_init,
.open = &iso15693_anticol,
//.open = &iso15693_select,
//.transceive = &iso15693_transceive,
.close = &iso15693_stay_quiet,
.fini = &iso15693_fini,
.setopt = &iso15693_setopt,
.getopt = &iso15693_getopt,
},
};
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