From 6e98a8dc0e090eece59daf571ce0525ad222eb54 Mon Sep 17 00:00:00 2001 From: laforge Date: Sun, 24 Feb 2008 12:38:02 +0000 Subject: add anticollision support for iso15693 and use correct mask_len (Bjoern Riemer) git-svn-id: https://svn.gnumonks.org/trunk/librfid@2088 e0336214-984f-0b4b-a45f-81c69e1f0ede --- src/rfid_layer2_iso15693.c | 113 ++++++++++++++++++++++++++++++++++++--------- 1 file changed, 91 insertions(+), 22 deletions(-) (limited to 'src') diff --git a/src/rfid_layer2_iso15693.c b/src/rfid_layer2_iso15693.c index d06f776..8f694cd 100644 --- a/src/rfid_layer2_iso15693.c +++ b/src/rfid_layer2_iso15693.c @@ -60,7 +60,7 @@ const unsigned int iso15693_timing[2][5] = { }, }; -unsigned char +char * iso15693_get_response_error_name(u_int8_t error){ switch (error){ case RFID_15693_ERR_NOTSUPP: @@ -167,7 +167,9 @@ 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; + int i = 0, j, mask_bytes; + u_int8_t byte=0; + void* mask_p; req->flags = flags; req->command = ISO15693_CMD_INVENTORY; @@ -175,16 +177,24 @@ iso15693_build_acf(u_int8_t *target, u_int8_t flags, u_int8_t afi, req->data[i++] = afi; req->data[i++] = mask_len; - for (j = 0; j < mask_len; j++) + 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; + int i, ret, mask_len; int tx_len, rx_len; int num_valid = 0; union { @@ -227,35 +237,82 @@ iso15693_anticol(struct rfid_layer2_handle *handle) } 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("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("ERROR ret: %d, slot %d\n", ret, i); + 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("Collision during anticol. slot %d bit %d\n", - i, boc); - uuid_list_valid[i] = -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, + 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); @@ -263,18 +320,30 @@ iso15693_anticol(struct rfid_layer2_handle *handle) 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 */ + /* FIXME: move to init_iso15693 */ handle->uid_len = ISO15693_UID_LEN; num_valid++; } else if (uuid_list_valid[i] < 0) { - DEBUGP("slot[%d]: collision(%d %d,%d) uuid: %s\n", - i,uuid_list_valid[i]*-1, - (uuid_list_valid[i]*-1)/8, - (uuid_list_valid[i]*-1)%8, - rfid_hexdump(uuid_list[i], ISO15693_UID_LEN)); + 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; @@ -346,7 +415,7 @@ iso15693_stay_quiet(struct rfid_layer2_handle *l2h) 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, 10,0); + tx_len, (u_int8_t*)&rx_buf, &rx_len, 30,0); l2h->priv.iso15693.state = RFID_15693_STATE_QUIET; -- cgit v1.2.3