some preliminary work to get 15693 working (actual implementation still missing)
authorHarald Welte <laforge@gnumonks.org>
Wed, 25 Oct 2006 23:33:06 +0000 (23:33 +0000)
committerHarald Welte <laforge@gnumonks.org>
Wed, 25 Oct 2006 23:33:06 +0000 (23:33 +0000)
git-svn-id: https://svn.gnumonks.org/trunk/librfid@1916 e0336214-984f-0b4b-a45f-81c69e1f0ede

include/librfid/rfid_layer2_iso15693.h
src/rfid_layer2_iso15693.c

index 37d204d..f84a6e1 100644 (file)
@@ -49,7 +49,94 @@ enum iso15693_state {
        ISO15693_STATE_NONE,
 };
 
+#ifdef __LIBRFID__
+
+#define ISO15693_UID_LEN       8
+#define ISO15693_CRC_LEN       2
+
+/* ISO 15693-3, Ch. 7.2 Table 3*/
+enum iso15693_request_flags {
+       RFID_15693_F_SUBC_TWO    = 0x01,
+       RFID_15693_F_RATE_HIGH   = 0x02,
+       RFID_15693_F_INV_TABLE_5 = 0x04,
+       RFID_15693_F_PROT_OEXT   = 0x08,
+};
+
+/* ISO 15693-3, Ch. 7.2 Table 4 */
+enum iso15693_request_flags_table4 {
+       RFID_15693_F4_SELECTED  =  0x10, /* only VICC in 'select' state */
+       RFID_15693_F4_ADDRESS   =  0x20, /* request is addressed */
+       RFID_15693_F4_CUSTOM    =  0x40,
+};
+
+/* ISO 15693-3, Ch. 7.2 Table 5 */
+enum iso15693_request_flags_table5 {
+       RFID_15693_F5_AFI_PRES  =  0x10, /* AFI is present */
+       RFID_15693_F5_NSLOTS_1  =  0x20, /* only 1 slot (instead of 16) */
+       RFID_15693_F5_CUSTOM    =  0x40,
+};
+
+/* ISO 15963-3, Ch. 7.2 Figure 4 */
+struct iso15693_request {
+       u_int8_t flags;
+       u_int8_t command;
+       u_int8_t data[0];
+} __attribute__ ((packed));
+
+
+
+/* ISO 15693, Ch. 7.3 Table 6 */
+enum iso15693_response_flags {
+       RFID_15693_RF_ERROR     = 0x01,
+       RFID_15693_RF_EXTENDED  = 0x08,
+};
+
+/* ISO 15693, Ch. 7.3.2 Table 7 */
+enum iso15693_response_errors {
+       RFID_15693_ERR_NOTSUPP  = 0x01,
+       RFID_15693_ERR_INVALID  = 0x02, /* command not recognized */
+       RFID_15693_ERR_UNKNOWN  = 0x0f, /* unknown error */
+       RFID_15693_ERR_BLOCK_NA = 0x10, /* block not available */
+       RFID_15693_ERR_BLOCK_LOCKED = 0x11,
+       RFID_15693_ERR_BLOCK_LOCKED_CH = 0x12,
+       RFID_15693_ERR_BLOCK_NOTPROG = 0x13,
+       RFID_15693_ERR_BLOCK_NOTLOCK = 0x14,
+};
+
+/* ISO 15693, Ch. 7.4 */
+enum iso15693_vicc_states {
+       RFID_15693_STATE_POWER_OFF,
+       RFID_15693_STATE_READY,
+       RFID_15693_STATE_QUIET,
+       RFID_15693_STATE_SELECTED,
+};
+
+/* ISO 15693, Ch. 9.1 Table 10*/
+enum iso15693_commands {
+       /* Mandatory 0x01 .. 0x1f */
+       ISO15693_CMD_INVENTORY          = 0x01,
+       ISO15693_CMD_STAY_QUIET         = 0x02,
+       /* Optional 0x20 .. 0x9f */
+       ISO15693_CMD_READ_BLOCK_SINGLE  = 0x20,
+       ISO15693_CMD_WRITE_BLOCK_SINGLE = 0x21,
+       ISO15693_CMD_LOCK_BLOCK         = 0x22,
+       ISO15693_CMD_READ_BLOCK_MULTI   = 0x23,
+       ISO15693_CMD_WRITE_BLOCK_MULTI  = 0x24,
+       ISO15693_CMD_SELECT             = 0x25,
+       ISO15693_CMD_RESET_TO_READY     = 0x26,
+       ISO15693_CMD_WRITE_AFI          = 0x27,
+       ISO15693_CMD_LOCK_AFI           = 0x28,
+       ISO15693_CMD_WRITE_DSFID        = 0x29,
+       ISO15693_CMD_LOCK_DSFID         = 0x2a,
+       ISO15693_CMD_GET_SYSINFO        = 0x2b,
+       ISO15693_CMD_GET_BLOCK_SECURITY = 0x2c
+       /* Custom 0xa0 .. 0xdf */
+       /* Proprietary 0xe0 .. 0xff */
+};
+
+
 #include <librfid/rfid_layer2.h>
 extern const struct rfid_layer2 rfid_layer2_iso15693;
 
+#endif /* __LIBRFID__ */
 #endif /* _ISO15693_H */
index a9767b7..dab7418 100644 (file)
 #include <librfid/rfid_reader.h>
 #include <librfid/rfid_layer2_iso15693.h>
 
-#if 0
-/* Transceive a 7-bit short frame */
-static int
-iso14443a_transceive_sf(struct rfid_layer2_handle *handle,
-                        unsigned char cmd,
-                        struct iso14443a_atqa *atqa)
-{
-       struct rfid_reader *rdr = handle->rh->reader;
+struct iso15693_request_read {
+       struct iso15693_request req;
+       u_int64_t uid;
+       u_int8_t blocknum;
+} __attribute__ ((packed));
 
-       return rdr->iso14443a.transceive_sf(handle->rh, cmd, atqa);
-}
+#define ISO15693_BLOCK_SIZE_MAX        (256/8)
+#define ISO15693_RESP_SIZE_MAX (4+ISO15693_BLOCK_SIZE_MAX)
 
-/* Transmit an anticollission bit frame */
+#if 0
 static int
-iso14443a_transceive_acf(struct rfid_layer2_handle *handle,
-                        struct iso14443a_anticol_cmd *acf,
-                        unsigned int *bit_of_col)
-{
-       struct rfid_reader *rdr = handle->rh->reader;
-
-       return rdr->iso14443a.transceive_acf(handle->rh, acf, bit_of_col);
-}
-
-/* Transmit a regular frame */
-static int 
-iso14443a_transceive(struct rfid_layer2_handle *handle,
-                       const unsigned char *tx_buf, unsigned int tx_len,
-                       unsigned char *rx_buf, unsigned int *rx_len,
-                       u_int64_t, unsigned int flags)
+iso15693_read_block(struct rfid_layer2_handle *handle,
+                   u_int8_t blocknr, u_int32_t *data)
 {
-       return handle->rh->reader->transceive(handle->rh, tx_buf, tx_len, 
-                                               rx_buf, rx_len, timeout, flags);
-}
+       int rc;
+       struct iso15693_request_read req;
+       u_int8_t resp[ISO15693_RESP_SIZE_MAX];
 
-static int 
-iso14443a_code_nvb_bits(unsigned char *nvb, unsigned int bits)
-{
-       unsigned int byte_count = bits / 8;
-       unsigned int bit_count = bits % 8;
+       req.req.flags = 0;
+       req.command = ISO15693_CMD_READ_BLOCK_SINGLE;
+       memcpy(&req.uid, handle->..., ISO15693_UID_LEN);
+       req.blocknum = blocknr;
 
-       if (byte_count < 2 || byte_count > 7)
-               return -1;
+       /* FIXME: fill CRC if required */
 
-       *nvb = ((byte_count & 0xf) << 4) | bit_count;
+       rc = iso15693_transceive(... &req, ...,  );
 
-       return 0;
-}
+       if (rc < 0)
+               return rc;
 
-/* first bit is '1', second bit '2' */
-static void
-set_bit_in_field(unsigned char *bitfield, unsigned int bit)
-{
-       unsigned int byte_count = bit / 8;
-       unsigned int bit_count = bit % 8;
+       memcpy(data, resp+1, rc-1); /* FIXME rc-3 in case of CRC */
 
-       DEBUGP("bitfield=%p, byte_count=%u, bit_count=%u\n",
-                       bitfield, byte_count, bit_count);
-       DEBUGP("%p = 0x%02x\n", (bitfield+byte_count), *(bitfield+byte_count));
-       *(bitfield+byte_count) |= 1 << (bit_count-1);
-       DEBUGP("%p = 0x%02x\n", (bitfield+byte_count), *(bitfield+byte_count));
+       return rc-1;
 }
 
 static int
-iso14443a_anticol(struct rfid_layer2_handle *handle)
+iso15693_write_block()
 {
-       int ret;
-       unsigned int uid_size;
-       struct iso14443a_atqa atqa;
-       struct iso14443a_anticol_cmd acf;
-       unsigned int bit_of_col;
-       unsigned char sak[3];
-       unsigned char uid[10];  // triple size equals 10 bytes;
-       unsigned int rx_len = sizeof(sak);
-       char *aqptr = (char *) &atqa;
-       static int first = 0;
-
-       memset(uid, 0, sizeof(uid));
-       memset(sak, 0, sizeof(sak));
-       memset(&atqa, 0, sizeof(atqa));
-       memset(&acf, 0, sizeof(acf));
-
-       if (first == 0) {
-       DEBUGP("Sending REQA\n");
-       ret = iso14443a_transceive_sf(handle, ISO14443A_SF_CMD_REQA, &atqa);
-       first = 1;
-       } else {
-       DEBUGP("Sending WUPA\n");
-       ret = iso14443a_transceive_sf(handle, ISO14443A_SF_CMD_WUPA, &atqa);
-       }
-
-       if (ret < 0) {
-               handle->priv.iso14443a.state = ISO14443A_STATE_REQA_SENT;
-               DEBUGP("error during transceive_sf: %d\n", ret);
-               return ret;
-       }
-       handle->priv.iso14443a.state = ISO14443A_STATE_ATQA_RCVD;
-
-       DEBUGP("ATQA: 0x%02x 0x%02x\n", *aqptr, *(aqptr+1));
-
-       if (!atqa.bf_anticol) {
-               handle->priv.iso14443a.state =ISO14443A_STATE_NO_BITFRAME_ANTICOL;
-               DEBUGP("no bitframe anticollission bits set, aborting\n");
-               return -1;
-       }
+       struct iso16593_request_read *rreq;
+       u_int32_t buf[sizeof(req)+ISO15693_BLOCK_SIZE_MAX];
 
-       if (atqa.uid_size == 2 || atqa.uid_size == 3)
-               uid_size = 3;
-       else if (atqa.uid_size == 1)
-               uid_size = 2;
-       else
-               uid_size = 1;
-       
-       acf.sel_code = ISO14443A_AC_SEL_CODE_CL1;
+       rreq = (struct iso15693_request_read *) req;
 
-       handle->priv.iso14443a.state = ISO14443A_STATE_ANTICOL_RUNNING;
-       handle->priv.iso14443a.level = ISO14443A_LEVEL_CL1;
+       rreq->req.flags = ;
+       rreq->req.command = ISO15693_CMD_WRITE_BLOCK_SINGLE;
+       memcpy(rreq->uid, handle->, ISO15693_UID_LEN);
+       rreq->blocknum = blocknr;
+       memcpy(rreq->);
 
-cascade:
-       iso14443a_code_nvb_bits(&acf.nvb, 16);
-
-       ret = iso14443a_transceive_acf(handle, &acf, &bit_of_col);
-       if (ret < 0)
-               return ret;
-       DEBUGP("bit_of_col = %u\n", bit_of_col);
-       
-       while (bit_of_col != ISO14443A_BITOFCOL_NONE) {
-               set_bit_in_field(&acf.uid_bits[0], bit_of_col-16);
-               iso14443a_code_nvb_bits(&acf.nvb, bit_of_col);
-               ret = iso14443a_transceive_acf(handle, &acf, &bit_of_col);
-               DEBUGP("bit_of_col = %u\n", bit_of_col);
-               if (ret < 0)
-                       return ret;
-       }
-
-       iso14443a_code_nvb_bits(&acf.nvb, 7*8);
-       ret = iso14443a_transceive(handle, (unsigned char *)&acf, 7, 
-                                  (unsigned char *) &sak, &rx_len,
-                                  TIMEOUT, 0);
-       if (ret < 0)
-               return ret;
-
-       if (sak[0] & 0x04) {
-               /* Cascade bit set, UID not complete */
-               switch (acf.sel_code) {
-               case ISO14443A_AC_SEL_CODE_CL1:
-                       /* cascading from CL1 to CL2 */
-                       if (acf.uid_bits[0] != 0x88) {
-                               DEBUGP("Cascade bit set, but UID0 != 0x88\n");
-                               return -1;
-                       }
-                       memcpy(&uid[0], &acf.uid_bits[1], 3);
-                       acf.sel_code = ISO14443A_AC_SEL_CODE_CL2;
-                       handle->priv.iso14443a.level = ISO14443A_LEVEL_CL2;
-                       break;
-               case ISO14443A_AC_SEL_CODE_CL2:
-                       /* cascading from CL2 to CL3 */
-                       memcpy(&uid[3], &acf.uid_bits[1], 3);
-                       acf.sel_code = ISO14443A_AC_SEL_CODE_CL3;
-                       handle->priv.iso14443a.level = ISO14443A_LEVEL_CL3;
-                       break;
-               default:
-                       DEBUGP("cannot cascade any further than CL3\n");
-                       handle->priv.iso14443a.state = ISO14443A_STATE_ERROR;
-                       return -1;
-                       break;
-               }
-               goto cascade;
-
-       } else {
-               switch (acf.sel_code) {
-               case ISO14443A_AC_SEL_CODE_CL1:
-                       /* single size UID (4 bytes) */
-                       memcpy(&uid[0], &acf.uid_bits[0], 4);
-                       break;
-               case ISO14443A_AC_SEL_CODE_CL2:
-                       /* double size UID (7 bytes) */
-                       memcpy(&uid[3], &acf.uid_bits[0], 4);
-                       break;
-               case ISO14443A_AC_SEL_CODE_CL3:
-                       /* triple size UID (10 bytes) */
-                       memcpy(&uid[6], &acf.uid_bits[0], 4);
-                       break;
-               }
-       }
-
-       handle->priv.iso14443a.level = ISO14443A_LEVEL_NONE;
-       handle->priv.iso14443a.state = ISO14443A_STATE_SELECTED;
-
-       {
-               int uid_len;
-               if (uid_size == 1)
-                       uid_len = 4;
-               else if (uid_size == 2)
-                       uid_len = 7;
-               else 
-                       uid_len = 10;
-
-               DEBUGP("UID %s\n", rfid_hexdump(uid, uid_len));
-       }
-
-       if (sak[0] & 0x20) {
-               DEBUGP("we have a T=CL compliant PICC\n");
-               handle->priv.iso14443a.tcl_capable = 1;
-       } else {
-               DEBUGP("we have a T!=CL PICC\n");
-               handle->priv.iso14443a.tcl_capable = 0;
-       }
-
-       return 0;
 }
 
 static int
-iso14443a_hlta(struct rfid_layer2_handle *handle)
+iso15693_lock_block()
 {
-       int ret;
-       unsigned char tx_buf[2] = { 0x50, 0x00 };
-       unsigned char rx_buf[10];
-       unsigned int rx_len = sizeof(rx_buf);
-
-       return 0;
-
-       ret = iso14443a_transceive(handle, tx_buf, sizeof(tx_buf),
-                                  rx_buf, &rx_len, 1000 /* 1ms */, 0);
-       if (ret < 0) {
-               /* "error" case: we don't get somethng back from the card */
-               return 0;
-       }
-       return -1;
 }
-#endif
 
+#endif
 
 static int
 iso15693_anticol(struct rfid_layer2_handle *handle)