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* improve scanning support: 

** first try REQA/HLTA/REQA/HLTA until no more tags found
** then power off the field and start from the beginning again
* add proper RF field on/off switching support to all readers
* reduce timer to actual value, don't multiply by 10
* detect collisions during transceive_sf (ATQA)
* make UID length depend on cascade level, not ATQA


git-svn-id: https://svn.gnumonks.org/trunk/librfid@2056 e0336214-984f-0b4b-a45f-81c69e1f0ede
This commit is contained in:
laforge 2008-01-27 02:15:48 +00:00
parent 6b2db45060
commit c203de04bd
8 changed files with 91 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/librfid/rfid_asic_rc632.h
View File

@ -33,8 +33,7 @@ struct rfid_asic_rc632 {
struct {
int (*power_up)(struct rfid_asic_handle *h);
int (*power_down)(struct rfid_asic_handle *h);
int (*turn_on_rf)(struct rfid_asic_handle *h);
int (*turn_off_rf)(struct rfid_asic_handle *h);
int (*rf_power)(struct rfid_asic_handle *h, int on);
int (*transceive)(struct rfid_asic_handle *h,
enum rfid_frametype,
const u_int8_t *tx_buf,

1
include/librfid/rfid_reader.h
View File

@ -35,6 +35,7 @@ struct rfid_reader {
u_int64_t timeout, unsigned int flags);
struct rfid_reader_handle * (*open)(void *data);
void (*close)(struct rfid_reader_handle *h);
int (*rf_power)(struct rfid_reader_handle *h, int on);
struct rfid_14443a_reader {
int (*init)(struct rfid_reader_handle *h);

47
src/rfid_asic_rc632.c
View File

@ -139,17 +139,17 @@ rc632_clear_bits(struct rfid_asic_handle *handle,
}
static int
rc632_turn_on_rf(struct rfid_asic_handle *handle)
rc632_rf_power(struct rfid_asic_handle *handle, int on)
{
ENTER();
return rc632_set_bits(handle, RC632_REG_TX_CONTROL, 0x03);
}
static int
rc632_turn_off_rf(struct rfid_asic_handle *handle)
{
ENTER();
return rc632_clear_bits(handle, RC632_REG_TX_CONTROL, 0x03);
if (on)
return rc632_set_bits(handle, RC632_REG_TX_CONTROL,
RC632_TXCTRL_TX1_RF_EN|
RC632_TXCTRL_TX2_RF_EN);
else
return rc632_clear_bits(handle, RC632_REG_TX_CONTROL,
RC632_TXCTRL_TX1_RF_EN|
RC632_TXCTRL_TX2_RF_EN);
}
static int
@ -375,7 +375,7 @@ rc632_transceive(struct rfid_asic_handle *handle,
else
cur_tx_len = tx_len;
ret = rc632_timer_set(handle, timer*10);
ret = rc632_timer_set(handle, timer);
if (ret < 0)
return ret;
@ -566,14 +566,14 @@ rc632_init(struct rfid_asic_handle *ah)
return ret;
/* switch off rf */
ret = rc632_turn_off_rf(ah);
ret = rc632_rf_power(ah, 0);
if (ret < 0)
return ret;
usleep(100000);
/* switch on rf */
ret = rc632_turn_on_rf(ah);
ret = rc632_rf_power(ah, 1);
if (ret < 0)
return ret;
@ -586,7 +586,7 @@ rc632_fini(struct rfid_asic_handle *ah)
int ret;
/* switch off rf */
ret = rc632_turn_off_rf(ah);
ret = rc632_rf_power(ah, 0);
if (ret < 0)
return ret;
@ -746,7 +746,7 @@ rc632_iso14443a_fini(struct iso14443a_handle *handle_14443)
{
#if 0
ret = rc632_turn_off_rf(handle);
ret = rc632_rf_power(handle, 0);
if (ret < 0)
return ret;
#endif
@ -765,6 +765,7 @@ rc632_iso14443a_transceive_sf(struct rfid_asic_handle *handle,
int ret;
u_int8_t tx_buf[1];
u_int8_t rx_len = 2;
u_int8_t error_flag;
memset(atqa, 0, sizeof(*atqa));
@ -805,6 +806,21 @@ rc632_iso14443a_transceive_sf(struct rfid_asic_handle *handle,
if (ret < 0)
return ret;
/* determine whether there was a collission */
ret = rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &error_flag);
if (ret < 0)
return ret;
if (error_flag & RC632_ERR_FLAG_COL_ERR) {
u_int8_t boc;
/* retrieve bit of collission */
ret = rc632_reg_read(handle, RC632_REG_COLL_POS, &boc);
if (ret < 0)
return ret;
DEBUGP("collision detected in xcv_sf: bit_of_col=%u\n", boc);
/* FIXME: how to signal this up the stack */
}
if (rx_len != 2) {
DEBUGP("rx_len(%d) != 2\n", rx_len);
return -1;
@ -1617,8 +1633,7 @@ const struct rfid_asic rc632 = {
.fn = {
.power_up = &rc632_power_up,
.power_down = &rc632_power_down,
.turn_on_rf = &rc632_turn_on_rf,
.turn_off_rf = &rc632_turn_off_rf,
.rf_power = &rc632_rf_power,
.transceive = &rc632_iso14443ab_transceive,
.iso14443a = {
.init = &rc632_iso14443a_init,

10
src/rfid_layer2_iso14443a.c
View File

@ -237,13 +237,10 @@ cascade:
}
}
h->level = ISO14443A_LEVEL_NONE;
h->state = ISO14443A_STATE_SELECTED;
{
if (uid_size == 1)
if (h->level == ISO14443A_LEVEL_CL1)
handle->uid_len = 4;
else if (uid_size == 2)
else if (h->level == ISO14443A_LEVEL_CL2)
handle->uid_len = 7;
else
handle->uid_len = 10;
@ -251,6 +248,9 @@ cascade:
DEBUGP("UID %s\n", rfid_hexdump(handle->uid, handle->uid_len));
}
h->level = ISO14443A_LEVEL_NONE;
h->state = ISO14443A_STATE_SELECTED;
if (sak[0] & 0x20) {
DEBUGP("we have a T=CL compliant PICC\n");
handle->proto_supported = 1 << RFID_PROTOCOL_TCL;

7
src/rfid_reader_cm5121.c
View File

@ -288,6 +288,12 @@ cm5121_mifare_auth(struct rfid_reader_handle *rh, u_int8_t cmd,
cmd, serno, block);
}
static int
cm5121_rf_power(struct rfid_reader_handle *rh, int on)
{
return rh->ah->asic->priv.rc632.fn.rf_power(rh->ah, on);
}
struct rfid_asic_transport cm5121_ccid = {
.name = "CM5121 OpenCT",
.priv.rc632 = {
@ -364,6 +370,7 @@ const struct rfid_reader rfid_reader_cm5121 = {
.name = "Omnikey CardMan 5121 RFID",
.open = &cm5121_open,
.close = &cm5121_close,
.rf_power = &cm5121_rf_power,
.transceive = &cm5121_transceive,
.l2_supported = (1 << RFID_LAYER2_ISO14443A) |
(1 << RFID_LAYER2_ISO14443B) |

7
src/rfid_reader_openpcd.c
View File

@ -438,6 +438,12 @@ openpcd_mifare_auth(struct rfid_reader_handle *rh, u_int8_t cmd,
cmd, serno, block);
}
static void
openpcd_rf_power(struct rfid_reader_handle *rh, int on)
{
return rh->ah->asic->priv.rc632.fn.rf_power(rh->ah, on);
}
static struct rfid_reader_handle *
openpcd_open(void *data)
{
@ -527,6 +533,7 @@ const struct rfid_reader rfid_reader_openpcd = {
.id = RFID_READER_OPENPCD,
.open = &openpcd_open,
.close = &openpcd_close,
.rf_power = &openpcd_rf_power,
#ifndef LIBRFID_FIRMWARE
.get_api_version = &openpcd_get_api_version,

6
src/rfid_reader_spidev.c
View File

@ -274,6 +274,11 @@ spidev_mifare_auth(struct rfid_reader_handle *rh, u_int8_t cmd,
cmd, serno,
block);
}
static int
spidev_rf_power(struct rfid_reader_handle *rh, int on)
{
return rh->ah->asic->priv.rc632.fn.rf_power(rh->ah, on);
}
static struct rfid_reader_handle *spidev_open(void *data)
{
@ -363,6 +368,7 @@ struct rfid_reader rfid_reader_spidev = {
.id = RFID_READER_SPIDEV,
.open = &spidev_open,
.close = &spidev_close,
.rf_power = &spidev_rf_power,
.transceive = &spidev_transceive,
.l2_supported = (1 << RFID_LAYER2_ISO14443A) |
(1 << RFID_LAYER2_ISO14443B) |

37
utils/librfid-tool.c
View File

@ -260,12 +260,17 @@ static int l2_by_name(const char *name)
return -1;
}
static void do_scan(void)
static int do_scan(int first)
{
int rc;
unsigned int size;
unsigned int size_len = sizeof(size);
if (first) {
rh->reader->rf_power(rh, 0);
usleep(10*1000);
rh->reader->rf_power(rh, 1);
}
printf("scanning for RFID token...\n");
rc = rfid_scan(rh, &l2h, &ph);
if (rc >= 2) {
@ -283,6 +288,31 @@ static void do_scan(void)
&size, &size_len) == 0)
printf("Size: %u bytes\n", size);
}
return rc;
}
static void do_endless_scan()
{
int rc;
int first = 1;
while (1) {
if (first)
putc('\n', stdout);
printf("==> doing %s scan\n", first ? "first" : "successive");
rc = do_scan(first);
if (rc >= 3) {
printf("closing proto\n");
rfid_protocol_close(ph);
}
if (rc >= 2) {
printf("closing layer2\n");
rfid_layer2_close(l2h);
first = 0;
} else
first = 1;
}
}
#define OPTION_OFFSET 256
@ -399,14 +429,13 @@ int main(int argc, char **argv)
case 's':
if (reader_init() < 0)
exit(1);
do_scan();
do_scan(0);
exit(0);
break;
case 'S':
if (reader_init() < 0)
exit(1);
while (1)
do_scan();
do_endless_scan();
exit(0);
break;
case 'p':