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android / platform / system / nfc / 2e1feaad404748c5d9d02d92bb2973d8aa9dfb96 / . / src / nfc / tags / rw_t3t.cc
blob: 6ac933d06a84e38eea8bc6bdf5823f91f2e166d2 [file] [log] [blame]
/******************************************************************************
*
* Copyright (C) 2010-2014 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This file contains the implementation for Type 3 tag in Reader/Writer
* mode.
*
******************************************************************************/
#include <string.h>
#include <android-base/stringprintf.h>
#include <base/logging.h>
#include <log/log.h>
#include "nfc_target.h"
#include "bt_types.h"
#include "nci_hmsgs.h"
#include "nfc_api.h"
#include "nfc_int.h"
#include "rw_api.h"
#include "rw_int.h"
using android::base::StringPrintf;
extern bool nfc_debug_enabled;
/* Definitions for constructing t3t command messages */
#define RW_T3T_FL_PADDING 0x01 /* Padding needed for last NDEF block */
/* Maximum number of NDEF blocks updates that can fit into one command (when all
* block-numbers are < 256) */
#define RW_T3T_MAX_NDEF_BLOCKS_PER_UPDATE_1_BYTE_FORMAT (13)
/* Maximum number of NDEF blocks updates that can fit into one command (when all
* block-numbers are >= 256) */
#define RW_T3T_MAX_NDEF_BLOCKS_PER_UPDATE_2_BYTE_FORMAT (12)
/* Definitions for SENSF_RES */
/* Offset of RD in SENSF_RES from NCI_POLL NTF (includes 1 byte SENSF_RES
* length) */
#define RW_T3T_SENSF_RES_RD_OFFSET 17
#define RW_T3T_SENSF_RES_RD_LEN 2 /* Size of RD in SENSF_RES */
/* Timeout definitions for commands */
#define RW_T3T_POLL_CMD_TIMEOUT_TICKS \
((RW_T3T_TOUT_RESP * 2 * QUICK_TIMER_TICKS_PER_SEC) / 1000)
#define RW_T3T_DEFAULT_CMD_TIMEOUT_TICKS \
((RW_T3T_TOUT_RESP * QUICK_TIMER_TICKS_PER_SEC) / 1000)
#define RW_T3T_RAW_FRAME_CMD_TIMEOUT_TICKS \
(RW_T3T_DEFAULT_CMD_TIMEOUT_TICKS * 4)
#define RW_T3T_MIN_TIMEOUT_TICKS 10
/* Macro to extract major version from NDEF version byte */
#define T3T_GET_MAJOR_VERSION(ver) ((ver) >> 4)
/* Enumeration of API commands */
enum {
RW_T3T_CMD_DETECT_NDEF,
RW_T3T_CMD_CHECK_NDEF,
RW_T3T_CMD_UPDATE_NDEF,
RW_T3T_CMD_CHECK,
RW_T3T_CMD_UPDATE,
RW_T3T_CMD_SEND_RAW_FRAME,
RW_T3T_CMD_GET_SYSTEM_CODES,
RW_T3T_CMD_FORMAT,
RW_T3T_CMD_SET_READ_ONLY_SOFT,
RW_T3T_CMD_SET_READ_ONLY_HARD,
RW_T3T_CMD_MAX
};
/* RW_CBACK events corresponding to API comands */
const uint8_t rw_t3t_api_res_evt[RW_T3T_CMD_MAX] = {
RW_T3T_NDEF_DETECT_EVT, /* RW_T3T_CMD_DETECT_NDEF */
RW_T3T_CHECK_CPLT_EVT, /* RW_T3T_CMD_CHECK_NDEF */
RW_T3T_UPDATE_CPLT_EVT, /* RW_T3T_CMD_UPDATE_NDEF */
RW_T3T_CHECK_CPLT_EVT, /* RW_T3T_CMD_CHECK */
RW_T3T_UPDATE_CPLT_EVT, /* RW_T3T_CMD_UPDATE */
RW_T3T_RAW_FRAME_EVT, /* RW_T3T_CMD_SEND_RAW_FRAME */
RW_T3T_GET_SYSTEM_CODES_EVT, /* RW_T3T_CMD_GET_SYSTEM_CODES */
RW_T3T_FORMAT_CPLT_EVT, /* RW_T3T_CMD_FORMAT */
RW_T3T_SET_READ_ONLY_CPLT_EVT /* RW_T3T_CMD_SET_READ_ONLY */
};
/* States */
enum {
RW_T3T_STATE_NOT_ACTIVATED,
RW_T3T_STATE_IDLE,
RW_T3T_STATE_COMMAND_PENDING
};
/* Sub-states */
enum {
/* Sub states for formatting Felica-Lite */
RW_T3T_FMT_SST_POLL_FELICA_LITE, /* Waiting for POLL Felica-Lite response (for
formatting) */
RW_T3T_FMT_SST_CHECK_MC_BLK, /* Waiting for Felica-Lite MC (MemoryControl)
block-read to complete */
RW_T3T_FMT_SST_UPDATE_MC_BLK, /* Waiting for Felica-Lite MC (MemoryControl)
block-write to complete */
RW_T3T_FMT_SST_UPDATE_NDEF_ATTRIB, /* Waiting for NDEF attribute block-write
to complete */
/* Sub states for setting Felica-Lite read only */
RW_T3T_SRO_SST_POLL_FELICA_LITE, /* Waiting for POLL Felica-Lite response (for
setting read only) */
RW_T3T_SRO_SST_UPDATE_NDEF_ATTRIB, /* Waiting for NDEF attribute block-write
to complete */
RW_T3T_SRO_SST_CHECK_MC_BLK, /* Waiting for Felica-Lite MC (MemoryControl)
block-read to complete */
RW_T3T_SRO_SST_UPDATE_MC_BLK /* Waiting for Felica-Lite MC (MemoryControl)
block-write to complete */
};
static std::string rw_t3t_cmd_str(uint8_t cmd_id);
static std::string rw_t3t_state_str(uint8_t state_id);
/* Local static functions */
static void rw_t3t_update_ndef_flag(uint8_t* p_flag);
static tNFC_STATUS rw_t3t_unselect();
static NFC_HDR* rw_t3t_get_cmd_buf(void);
static tNFC_STATUS rw_t3t_send_to_lower(NFC_HDR* p_msg);
static void rw_t3t_handle_get_system_codes_cplt(void);
static void rw_t3t_handle_get_sc_poll_rsp(tRW_T3T_CB* p_cb, uint8_t nci_status,
uint8_t num_responses,
uint8_t sensf_res_buf_size,
uint8_t* p_sensf_res_buf);
static void rw_t3t_handle_ndef_detect_poll_rsp(tRW_T3T_CB* p_cb,
uint8_t nci_status,
uint8_t num_responses);
static void rw_t3t_handle_fmt_poll_rsp(tRW_T3T_CB* p_cb, uint8_t nci_status,
uint8_t num_responses);
static void rw_t3t_handle_sro_poll_rsp(tRW_T3T_CB* p_cb, uint8_t nci_status,
uint8_t num_responses);
/* Default NDEF attribute information block (used when formatting Felica-Lite
* tags) */
/* NBr (max block reads per cmd)*/
#define RW_T3T_DEFAULT_FELICALITE_NBR 4
/* NBw (max block write per cmd)*/
#define RW_T3T_DEFAULT_FELICALITE_NBW 1
#define RW_T3T_DEFAULT_FELICALITE_NMAXB (T3T_FELICALITE_NMAXB)
#define RW_T3T_DEFAULT_FELICALITE_ATTRIB_INFO_CHECKSUM \
((T3T_MSG_NDEF_VERSION + RW_T3T_DEFAULT_FELICALITE_NBR + \
RW_T3T_DEFAULT_FELICALITE_NBW + (RW_T3T_DEFAULT_FELICALITE_NMAXB >> 8) + \
(RW_T3T_DEFAULT_FELICALITE_NMAXB & 0xFF) + T3T_MSG_NDEF_WRITEF_OFF + \
T3T_MSG_NDEF_RWFLAG_RW) & \
0xFFFF)
const uint8_t rw_t3t_default_attrib_info[T3T_MSG_BLOCKSIZE] = {
T3T_MSG_NDEF_VERSION, /* Ver */
RW_T3T_DEFAULT_FELICALITE_NBR, /* NBr (max block reads per cmd)*/
RW_T3T_DEFAULT_FELICALITE_NBW, /* NBw (max block write per cmd)*/
(RW_T3T_DEFAULT_FELICALITE_NMAXB >> 8), /* Nmaxb (max size in blocks) */
(RW_T3T_DEFAULT_FELICALITE_NMAXB & 0xFF), /* Nmaxb (max size in blocks) */
0, 0, 0, 0, /* Unused */
T3T_MSG_NDEF_WRITEF_OFF, /* WriteF */
T3T_MSG_NDEF_RWFLAG_RW, /* RW Flag */
0, 0, 0, /* Ln (current size in bytes) */
(RW_T3T_DEFAULT_FELICALITE_ATTRIB_INFO_CHECKSUM >>
8), /* checksum (high-byte) */
(RW_T3T_DEFAULT_FELICALITE_ATTRIB_INFO_CHECKSUM &
0xFF) /* checksum (low-byte) */
};
/* This is (T/t3t * 4^E) , E is the index of the array. The unit is .0001 ms */
static const uint32_t rw_t3t_mrti_base[] = {302, 1208, 4832, 19328};
/*******************************************************************************
**
** Function rw_t3t_check_timeout
**
** Description The timeout value is a + b * number_blocks)
**
** Returns timeout value in ticks
**
*******************************************************************************/
static uint32_t rw_t3t_check_timeout(uint16_t num_blocks) {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
uint32_t timeout;
uint32_t extra;
timeout = (p_cb->check_tout_a + num_blocks * p_cb->check_tout_b) *
QUICK_TIMER_TICKS_PER_SEC / 1000000;
/* allow some extra time for driver */
extra = (timeout / 10) + RW_T3T_MIN_TIMEOUT_TICKS;
timeout += extra;
return timeout;
}
/*******************************************************************************
**
** Function rw_t3t_update_timeout
**
** Description The timeout value is a + b * number_blocks)
**
** Returns timeout value in ticks
**
*******************************************************************************/
static uint32_t rw_t3t_update_timeout(uint16_t num_blocks) {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
uint32_t timeout;
uint32_t extra;
timeout = (p_cb->update_tout_a + num_blocks * p_cb->update_tout_b) *
QUICK_TIMER_TICKS_PER_SEC / 1000000;
/* allow some extra time for driver */
extra = (timeout / 10) + RW_T3T_MIN_TIMEOUT_TICKS;
timeout += extra;
return timeout;
}
/*******************************************************************************
**
** Function rw_t3t_process_error
**
** Description Process error (timeout or CRC error)
**
** Returns none
**
*******************************************************************************/
void rw_t3t_process_error(tNFC_STATUS status) {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
uint8_t evt;
tRW_DATA evt_data;
NFC_HDR* p_cmd_buf;
if (p_cb->rw_state == RW_T3T_STATE_COMMAND_PENDING) {
if (p_cb->cur_cmd == RW_T3T_CMD_GET_SYSTEM_CODES) {
/* For GetSystemCode: tag did not respond to requested POLL */
rw_t3t_handle_get_system_codes_cplt();
return;
}
/* Retry sending command if retry-count < max */
else if (rw_cb.cur_retry < RW_MAX_RETRIES) {
/* retry sending the command */
rw_cb.cur_retry++;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("T3T retransmission attempt %i of %i",
rw_cb.cur_retry, RW_MAX_RETRIES);
/* allocate a new buffer for message */
p_cmd_buf = rw_t3t_get_cmd_buf();
if (p_cmd_buf != nullptr) {
memcpy(p_cmd_buf, p_cb->p_cur_cmd_buf, sizeof(NFC_HDR) +
p_cb->p_cur_cmd_buf->offset +
p_cb->p_cur_cmd_buf->len);
if (rw_t3t_send_to_lower(p_cmd_buf) == NFC_STATUS_OK) {
/* Start timer for waiting for response */
nfc_start_quick_timer(&p_cb->timer, NFC_TTYPE_RW_T3T_RESPONSE,
p_cb->cur_tout);
return;
} else {
/* failure - could not send buffer */
GKI_freebuf(p_cmd_buf);
}
}
} else {
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"T3T maximum retransmission attempts reached (%i)", RW_MAX_RETRIES);
}
#if (RW_STATS_INCLUDED == TRUE)
/* update failure count */
rw_main_update_fail_stats();
#endif /* RW_STATS_INCLUDED */
p_cb->rw_state = RW_T3T_STATE_IDLE;
/* Notify app of result (if there was a pending command) */
if (p_cb->cur_cmd < RW_T3T_CMD_MAX) {
/* If doing presence check, use status=NFC_STATUS_FAILED, otherwise
* NFC_STATUS_TIMEOUT */
evt_data.status = status;
evt = rw_t3t_api_res_evt[p_cb->cur_cmd];
/* Set additional flags for RW_T3T_NDEF_DETECT_EVT */
if (evt == RW_T3T_NDEF_DETECT_EVT) {
evt_data.ndef.flags = RW_NDEF_FL_UNKNOWN;
rw_t3t_update_ndef_flag(&evt_data.ndef.flags);
}
(*(rw_cb.p_cback))(evt, &evt_data);
}
} else {
evt_data.status = status;
(*(rw_cb.p_cback))(RW_T3T_INTF_ERROR_EVT, &evt_data);
}
}
/*******************************************************************************
**
** Function rw_t3t_start_poll_timer
**
** Description Start the timer for T3T POLL Command
**
** Returns none
**
*******************************************************************************/
void rw_t3t_start_poll_timer(tRW_T3T_CB* p_cb) {
nfc_start_quick_timer(&p_cb->poll_timer, NFC_TTYPE_RW_T3T_RESPONSE,
RW_T3T_POLL_CMD_TIMEOUT_TICKS);
}
/*******************************************************************************
**
** Function rw_t3t_handle_nci_poll_ntf
**
** Description Handle NCI_T3T_POLLING_NTF
**
** Returns none
**
*******************************************************************************/
void rw_t3t_handle_nci_poll_ntf(uint8_t nci_status, uint8_t num_responses,
uint8_t sensf_res_buf_size,
uint8_t* p_sensf_res_buf) {
tRW_DATA evt_data;
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
/* stop timer for poll response */
nfc_stop_quick_timer(&p_cb->poll_timer);
/* Stop t3t timer (if started) */
if (p_cb->flags & RW_T3T_FL_W4_PRESENCE_CHECK_POLL_RSP) {
p_cb->flags &= ~RW_T3T_FL_W4_PRESENCE_CHECK_POLL_RSP;
evt_data.status = nci_status;
p_cb->rw_state = RW_T3T_STATE_IDLE;
(*(rw_cb.p_cback))(RW_T3T_PRESENCE_CHECK_EVT, &evt_data);
} else if (p_cb->flags & RW_T3T_FL_W4_GET_SC_POLL_RSP) {
/* Handle POLL ntf in response to get system codes */
p_cb->flags &= ~RW_T3T_FL_W4_GET_SC_POLL_RSP;
rw_t3t_handle_get_sc_poll_rsp(p_cb, nci_status, num_responses,
sensf_res_buf_size, p_sensf_res_buf);
} else if (p_cb->flags & RW_T3T_FL_W4_FMT_FELICA_LITE_POLL_RSP) {
/* Handle POLL ntf in response to get system codes */
p_cb->flags &= ~RW_T3T_FL_W4_FMT_FELICA_LITE_POLL_RSP;
rw_t3t_handle_fmt_poll_rsp(p_cb, nci_status, num_responses);
} else if (p_cb->flags & RW_T3T_FL_W4_SRO_FELICA_LITE_POLL_RSP) {
/* Handle POLL ntf in response to get system codes */
p_cb->flags &= ~RW_T3T_FL_W4_SRO_FELICA_LITE_POLL_RSP;
rw_t3t_handle_sro_poll_rsp(p_cb, nci_status, num_responses);
} else if (p_cb->flags & RW_T3T_FL_W4_NDEF_DETECT_POLL_RSP) {
/* Handle POLL ntf in response to ndef detection */
p_cb->flags &= ~RW_T3T_FL_W4_NDEF_DETECT_POLL_RSP;
rw_t3t_handle_ndef_detect_poll_rsp(p_cb, nci_status, num_responses);
} else {
/* Handle POLL ntf in response to RW_T3tPoll */
evt_data.t3t_poll.status = nci_status;
if (evt_data.t3t_poll.status == NCI_STATUS_OK) {
evt_data.t3t_poll.rc = p_cb->cur_poll_rc;
evt_data.t3t_poll.response_num = num_responses;
evt_data.t3t_poll.response_bufsize = sensf_res_buf_size;
evt_data.t3t_poll.response_buf = p_sensf_res_buf;
}
p_cb->rw_state = RW_T3T_STATE_IDLE;
(*(rw_cb.p_cback))(RW_T3T_POLL_EVT, &evt_data);
}
}
/*******************************************************************************
**
** Function rw_t3t_handle_get_system_codes_cplt
**
** Description Notify upper layer of system codes
**
** Returns none
**
*******************************************************************************/
void rw_t3t_handle_get_system_codes_cplt(void) {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
tRW_DATA evt_data;
uint8_t i;
evt_data.t3t_sc.status = NFC_STATUS_OK;
evt_data.t3t_sc.num_system_codes = p_cb->num_system_codes;
evt_data.t3t_sc.p_system_codes = p_cb->system_codes;
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"number of systems: %i", evt_data.t3t_sc.num_system_codes);
for (i = 0; i < evt_data.t3t_sc.num_system_codes; i++) {
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"system %i: %04X", i, evt_data.t3t_sc.p_system_codes[i]);
}
p_cb->rw_state = RW_T3T_STATE_IDLE;
(*(rw_cb.p_cback))(RW_T3T_GET_SYSTEM_CODES_EVT, &evt_data);
}
/*******************************************************************************
**
** Function rw_t3t_format_cplt
**
** Description Notify upper layer of format complete
**
** Returns none
**
*******************************************************************************/
void rw_t3t_format_cplt(tNFC_STATUS status) {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
tRW_DATA evt_data;
p_cb->rw_state = RW_T3T_STATE_IDLE;
/* Update ndef info */
p_cb->ndef_attrib.status = status;
if (status == NFC_STATUS_OK) {
p_cb->ndef_attrib.version = T3T_MSG_NDEF_VERSION;
p_cb->ndef_attrib.nbr = RW_T3T_DEFAULT_FELICALITE_NBR;
p_cb->ndef_attrib.nbw = RW_T3T_DEFAULT_FELICALITE_NBW;
p_cb->ndef_attrib.nmaxb = RW_T3T_DEFAULT_FELICALITE_NMAXB;
p_cb->ndef_attrib.writef = T3T_MSG_NDEF_WRITEF_OFF;
p_cb->ndef_attrib.rwflag = T3T_MSG_NDEF_RWFLAG_RW;
p_cb->ndef_attrib.ln = 0;
}
/* Notify upper layer of format complete */
evt_data.status = status;
(*(rw_cb.p_cback))(RW_T3T_FORMAT_CPLT_EVT, &evt_data);
}
/*******************************************************************************
**
** Function rw_t3t_set_readonly_cplt
**
** Description Notify upper layer of set read only complete
**
** Returns none
**
*******************************************************************************/
void rw_t3t_set_readonly_cplt(tNFC_STATUS status) {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
tRW_DATA evt_data;
p_cb->rw_state = RW_T3T_STATE_IDLE;
/* Notify upper layer of format complete */
evt_data.status = status;
(*(rw_cb.p_cback))(RW_T3T_SET_READ_ONLY_CPLT_EVT, &evt_data);
}
/*******************************************************************************
**
** Function rw_t3t_process_timeout
**
** Description Process timeout
**
** Returns none
**
*******************************************************************************/
void rw_t3t_process_timeout(TIMER_LIST_ENT* p_tle) {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
tRW_DATA evt_data;
/* Check which timer timed out */
if (p_tle == &p_cb->timer) {
/* UPDATE/CHECK response timeout */
LOG(ERROR) << StringPrintf("T3T timeout. state=%s cur_cmd=0x%02X (%s)",
rw_t3t_state_str(rw_cb.tcb.t3t.rw_state).c_str(),
rw_cb.tcb.t3t.cur_cmd,
rw_t3t_cmd_str(rw_cb.tcb.t3t.cur_cmd).c_str());
rw_t3t_process_error(NFC_STATUS_TIMEOUT);
} else {
LOG(ERROR) << StringPrintf("T3T POLL timeout.");
/* POLL response timeout */
if (p_cb->flags & RW_T3T_FL_W4_PRESENCE_CHECK_POLL_RSP) {
/* POLL timeout for presence check */
p_cb->flags &= ~RW_T3T_FL_W4_PRESENCE_CHECK_POLL_RSP;
evt_data.status = NFC_STATUS_FAILED;
p_cb->rw_state = RW_T3T_STATE_IDLE;
(*(rw_cb.p_cback))(RW_T3T_PRESENCE_CHECK_EVT, &evt_data);
} else if (p_cb->flags & RW_T3T_FL_W4_GET_SC_POLL_RSP) {
/* POLL timeout for getting system codes */
p_cb->flags &= ~RW_T3T_FL_W4_GET_SC_POLL_RSP;
rw_t3t_handle_get_system_codes_cplt();
} else if (p_cb->flags & RW_T3T_FL_W4_FMT_FELICA_LITE_POLL_RSP) {
/* POLL timeout for formatting Felica Lite */
p_cb->flags &= ~RW_T3T_FL_W4_FMT_FELICA_LITE_POLL_RSP;
LOG(ERROR) << StringPrintf("Felica-Lite tag not detected");
rw_t3t_format_cplt(NFC_STATUS_FAILED);
} else if (p_cb->flags & RW_T3T_FL_W4_SRO_FELICA_LITE_POLL_RSP) {
/* POLL timeout for configuring Felica Lite read only */
p_cb->flags &= ~RW_T3T_FL_W4_SRO_FELICA_LITE_POLL_RSP;
LOG(ERROR) << StringPrintf("Felica-Lite tag not detected");
rw_t3t_set_readonly_cplt(NFC_STATUS_FAILED);
} else if (p_cb->flags & RW_T3T_FL_W4_NDEF_DETECT_POLL_RSP) {
/* POLL timeout for ndef detection */
p_cb->flags &= ~RW_T3T_FL_W4_NDEF_DETECT_POLL_RSP;
rw_t3t_handle_ndef_detect_poll_rsp(p_cb, NFC_STATUS_TIMEOUT, 0);
} else {
/* Timeout waiting for response for RW_T3tPoll */
evt_data.t3t_poll.status = NFC_STATUS_FAILED;
p_cb->rw_state = RW_T3T_STATE_IDLE;
(*(rw_cb.p_cback))(RW_T3T_POLL_EVT, &evt_data);
}
}
}
/*******************************************************************************
**
** Function rw_t3t_process_frame_error
**
** Description Process frame crc error
**
** Returns none
**
*******************************************************************************/
void rw_t3t_process_frame_error(void) {
LOG(ERROR) << StringPrintf("T3T frame error. state=%s cur_cmd=0x%02X (%s)",
rw_t3t_state_str(rw_cb.tcb.t3t.rw_state).c_str(),
rw_cb.tcb.t3t.cur_cmd,
rw_t3t_cmd_str(rw_cb.tcb.t3t.cur_cmd).c_str());
#if (RW_STATS_INCLUDED == TRUE)
/* Update stats */
rw_main_update_crc_error_stats();
#endif /* RW_STATS_INCLUDED */
/* Process the error */
rw_t3t_process_error(NFC_STATUS_MSG_CORRUPTED);
}
/*******************************************************************************
**
** Function rw_t3t_send_to_lower
**
** Description Send command to lower layer
**
** Returns status of the send
**
*******************************************************************************/
tNFC_STATUS rw_t3t_send_to_lower(NFC_HDR* p_msg) {
uint8_t* p;
#if (RW_STATS_INCLUDED == TRUE)
bool is_retry;
/* Update stats */
rw_main_update_tx_stats(p_msg->len, ((rw_cb.cur_retry == 0) ? false : true));
#endif /* RW_STATS_INCLUDED */
/* Set NFC-F SoD field (payload len + 1) */
p_msg->offset -= 1; /* Point to SoD field */
p = (uint8_t*)(p_msg + 1) + p_msg->offset;
UINT8_TO_STREAM(p, (p_msg->len + 1));
p_msg->len += 1; /* Increment len to include SoD */
return (NFC_SendData(NFC_RF_CONN_ID, p_msg));
}
/*****************************************************************************
**
** Function rw_t3t_get_cmd_buf
**
** Description Get a buffer for sending T3T messages
**
** Returns NFC_HDR *
**
*****************************************************************************/
NFC_HDR* rw_t3t_get_cmd_buf(void) {
NFC_HDR* p_cmd_buf;
p_cmd_buf = (NFC_HDR*)GKI_getpoolbuf(NFC_RW_POOL_ID);
if (p_cmd_buf != nullptr) {
/* Reserve offset for NCI_DATA_HDR and NFC-F Sod (LEN) field */
p_cmd_buf->offset = NCI_MSG_OFFSET_SIZE + NCI_DATA_HDR_SIZE + 1;
p_cmd_buf->len = 0;
}
return (p_cmd_buf);
}
/*****************************************************************************
**
** Function rw_t3t_send_cmd
**
** Description Send command to tag, and start timer for response
**
** Returns tNFC_STATUS
**
*****************************************************************************/
tNFC_STATUS rw_t3t_send_cmd(tRW_T3T_CB* p_cb, uint8_t rw_t3t_cmd,
NFC_HDR* p_cmd_buf, uint32_t timeout_ticks) {
tNFC_STATUS retval;
/* Indicate first attempt to send command, back up cmd buffer in case needed
* for retransmission */
rw_cb.cur_retry = 0;
memcpy(p_cb->p_cur_cmd_buf, p_cmd_buf,
sizeof(NFC_HDR) + p_cmd_buf->offset + p_cmd_buf->len);
p_cb->cur_cmd = rw_t3t_cmd;
p_cb->cur_tout = timeout_ticks;
p_cb->rw_state = RW_T3T_STATE_COMMAND_PENDING;
retval = rw_t3t_send_to_lower(p_cmd_buf);
if (retval == NFC_STATUS_OK) {
/* Start timer for waiting for response */
nfc_start_quick_timer(&p_cb->timer, NFC_TTYPE_RW_T3T_RESPONSE,
timeout_ticks);
} else {
/* Error sending */
p_cb->rw_state = RW_T3T_STATE_IDLE;
}
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("cur_tout: %d, timeout_ticks: %d ret:%d", p_cb->cur_tout,
timeout_ticks, retval);
return (retval);
}
/*****************************************************************************
**
** Function rw_t3t_send_update_ndef_attribute_cmd
**
** Description Send UPDATE command for Attribute Information
**
** Returns tNFC_STATUS
**
*****************************************************************************/
tNFC_STATUS rw_t3t_send_update_ndef_attribute_cmd(tRW_T3T_CB* p_cb,
bool write_in_progress) {
tNFC_STATUS retval = NFC_STATUS_OK;
NFC_HDR* p_cmd_buf;
uint8_t *p_cmd_start, *p;
uint16_t checksum, i;
uint8_t write_f;
uint32_t ln;
uint8_t* p_ndef_attr_info_start;
p_cmd_buf = rw_t3t_get_cmd_buf();
if (p_cmd_buf != nullptr) {
/* Construct T3T message */
p = p_cmd_start = (uint8_t*)(p_cmd_buf + 1) + p_cmd_buf->offset;
/* Add UPDATE opcode to message */
UINT8_TO_STREAM(p, T3T_MSG_OPC_UPDATE_CMD);
/* Add IDm to message */
ARRAY_TO_STREAM(p, p_cb->peer_nfcid2, NCI_NFCID2_LEN);
/* Add Service code list */
UINT8_TO_STREAM(p, 1); /* Number of services (only 1 service: NDEF) */
UINT16_TO_STREAM(
p, T3T_MSG_NDEF_SC_RW); /* Service code (little-endian format) */
/* Add number of blocks in this UPDATE command */
UINT8_TO_STREAM(p, 1); /* Number of blocks to write in this command */
/* Block List element: the NDEF attribute information block (block 0) */
UINT8_TO_STREAM(p, T3T_MSG_MASK_TWO_BYTE_BLOCK_DESC_FORMAT);
UINT8_TO_STREAM(p, 0);
/* Add payload (Attribute information block) */
p_ndef_attr_info_start =
p; /* Save start of a NDEF attribute info block for checksum */
UINT8_TO_STREAM(p, T3T_MSG_NDEF_VERSION);
UINT8_TO_STREAM(p, p_cb->ndef_attrib.nbr);
UINT8_TO_STREAM(p, p_cb->ndef_attrib.nbw);
UINT16_TO_BE_STREAM(p, p_cb->ndef_attrib.nmaxb);
UINT32_TO_STREAM(p, 0);
/* If starting NDEF write: set WriteF=ON, and ln=current ndef length */
if (write_in_progress) {
write_f = T3T_MSG_NDEF_WRITEF_ON;
ln = p_cb->ndef_attrib.ln;
}
/* If finishing NDEF write: set WriteF=OFF, and ln=new ndef len */
else {
write_f = T3T_MSG_NDEF_WRITEF_OFF;
ln = p_cb->ndef_msg_len;
}
UINT8_TO_STREAM(p, write_f);
UINT8_TO_STREAM(p, p_cb->ndef_attrib.rwflag);
UINT8_TO_STREAM(p, (ln >> 16) & 0xFF); /* High byte (of 3) of Ln */
UINT8_TO_STREAM(p, (ln >> 8) & 0xFF); /* Middle byte (of 3) of Ln */
UINT8_TO_STREAM(p, (ln)&0xFF); /* Low byte (of 3) of Ln */
/* Calculate and append Checksum */
checksum = 0;
for (i = 0; i < T3T_MSG_NDEF_ATTR_INFO_SIZE; i++) {
checksum += p_ndef_attr_info_start[i];
}
UINT16_TO_BE_STREAM(p, checksum);
/* Calculate length of message */
p_cmd_buf->len = (uint16_t)(p - p_cmd_start);
/* Send the T3T message */
retval = rw_t3t_send_cmd(p_cb, RW_T3T_CMD_UPDATE_NDEF, p_cmd_buf,
rw_t3t_update_timeout(1));
} else {
retval = NFC_STATUS_NO_BUFFERS;
}
return (retval);
}
/*****************************************************************************
**
** Function rw_t3t_send_next_ndef_update_cmd
**
** Description Send next segment of NDEF message to update
**
** Returns tNFC_STATUS
**
*****************************************************************************/
tNFC_STATUS rw_t3t_send_next_ndef_update_cmd(tRW_T3T_CB* p_cb) {
tNFC_STATUS retval = NFC_STATUS_OK;
uint16_t block_id;
uint16_t first_block_to_write;
uint16_t ndef_blocks_to_write, ndef_blocks_remaining;
uint32_t ndef_bytes_remaining, ndef_padding = 0;
uint8_t flags = 0;
uint8_t* p_cur_ndef_src_offset;
NFC_HDR* p_cmd_buf;
uint8_t *p_cmd_start, *p;
uint8_t blocks_per_update;
uint32_t timeout;
p_cmd_buf = rw_t3t_get_cmd_buf();
if (p_cmd_buf != nullptr) {
/* Construct T3T message */
p = p_cmd_start = (uint8_t*)(p_cmd_buf + 1) + p_cmd_buf->offset;
/* Calculate number of ndef bytes remaining to write */
ndef_bytes_remaining = p_cb->ndef_msg_len - p_cb->ndef_msg_bytes_sent;
/* Calculate number of blocks remaining to write */
ndef_blocks_remaining =
(uint16_t)((ndef_bytes_remaining + 15) >>
4); /* ndef blocks remaining (rounded upward) */
/* Calculate first NDEF block ID for this UPDATE command */
first_block_to_write = (uint16_t)((p_cb->ndef_msg_bytes_sent >> 4) + 1);
/* Calculate max number of blocks per write. */
if ((first_block_to_write +
RW_T3T_MAX_NDEF_BLOCKS_PER_UPDATE_1_BYTE_FORMAT) < 0x100) {
/* All block-numbers are < 0x100 (i.e. can be specified using one-byte
* format) */
blocks_per_update = RW_T3T_MAX_NDEF_BLOCKS_PER_UPDATE_1_BYTE_FORMAT;
} else {
/* Block-numbers are >= 0x100 (i.e. need to be specified using two-byte
* format) */
blocks_per_update = RW_T3T_MAX_NDEF_BLOCKS_PER_UPDATE_2_BYTE_FORMAT;
}
/* Check if blocks_per_update is bigger than what peer allows */
if (blocks_per_update > p_cb->ndef_attrib.nbw)
blocks_per_update = p_cb->ndef_attrib.nbw;
/* Check if remaining blocks can fit into one UPDATE command */
if (ndef_blocks_remaining <= blocks_per_update) {
/* remaining blocks can fit into one UPDATE command */
ndef_blocks_to_write = ndef_blocks_remaining;
} else {
/* Remaining blocks cannot fit into one UPDATE command */
ndef_blocks_to_write = blocks_per_update;
}
/* Write to command header for UPDATE */
/* Add UPDATE opcode to message */
UINT8_TO_STREAM(p, T3T_MSG_OPC_UPDATE_CMD);
/* Add IDm to message */
ARRAY_TO_STREAM(p, p_cb->peer_nfcid2, NCI_NFCID2_LEN);
/* Add Service code list */
UINT8_TO_STREAM(p, 1); /* Number of services (only 1 service: NDEF) */
UINT16_TO_STREAM(
p, T3T_MSG_NDEF_SC_RW); /* Service code (little-endian format) */
/* Add number of blocks in this UPDATE command */
UINT8_TO_STREAM(
p,
ndef_blocks_to_write); /* Number of blocks to write in this command */
timeout = rw_t3t_update_timeout(ndef_blocks_to_write);
for (block_id = first_block_to_write;
block_id < (first_block_to_write + ndef_blocks_to_write); block_id++) {
if (block_id < 256) {
/* Block IDs 0-255 can be specified in '2-byte' format: byte0=0,
* byte1=blocknumber */
UINT8_TO_STREAM(
p, T3T_MSG_MASK_TWO_BYTE_BLOCK_DESC_FORMAT); /* byte0: len=1;
access-mode=0;
service code list
order=0 */
UINT8_TO_STREAM(p, block_id); /* byte1: block number */
} else {
/* Block IDs 256+ must be specified in '3-byte' format: byte0=80h,
* followed by blocknumber */
UINT8_TO_STREAM(
p,
0x00); /* byte0: len=0; access-mode=0; service code list order=0 */
UINT16_TO_STREAM(
p, block_id); /* byte1-2: block number in little-endian format */
}
}
/* Add NDEF payload */
/* If this sending last block of NDEF, check if padding is needed to make
* payload a multiple of 16 bytes */
if (ndef_blocks_to_write == ndef_blocks_remaining) {
ndef_padding = (16 - (ndef_bytes_remaining & 0x0F)) & 0x0F;
if (ndef_padding) {
flags |= RW_T3T_FL_PADDING;
ndef_blocks_to_write--; /* handle the last block separately if it needs
padding */
}
}
/* Add NDEF payload to the message */
p_cur_ndef_src_offset = &p_cb->ndef_msg[p_cb->ndef_msg_bytes_sent];
ARRAY_TO_STREAM(p, p_cur_ndef_src_offset, (ndef_blocks_to_write * 16));
p_cb->ndef_msg_bytes_sent += ((uint32_t)ndef_blocks_to_write * 16);
if (flags & RW_T3T_FL_PADDING) {
/* Add last of the NDEF message */
p_cur_ndef_src_offset = &p_cb->ndef_msg[p_cb->ndef_msg_bytes_sent];
ARRAY_TO_STREAM(p, p_cur_ndef_src_offset, (int)(16 - ndef_padding));
p_cb->ndef_msg_bytes_sent += (16 - ndef_padding);
/* Add padding */
memset(p, 0, ndef_padding);
p += ndef_padding;
}
/* Calculate length of message */
p_cmd_buf->len = (uint16_t)(p - p_cmd_start);
/* Send the T3T message */
retval = rw_t3t_send_cmd(p_cb, RW_T3T_CMD_UPDATE_NDEF, p_cmd_buf, timeout);
} else {
retval = NFC_STATUS_NO_BUFFERS;
}
return (retval);
}
/*****************************************************************************
**
** Function rw_t3t_send_next_ndef_check_cmd
**
** Description Send command for reading next segment of NDEF message
**
** Returns tNFC_STATUS
**
*****************************************************************************/
tNFC_STATUS rw_t3t_send_next_ndef_check_cmd(tRW_T3T_CB* p_cb) {
tNFC_STATUS retval = NFC_STATUS_OK;
uint16_t block_id;
uint16_t ndef_blocks_remaining, first_block_to_read, cur_blocks_to_read;
uint32_t ndef_bytes_remaining;
NFC_HDR* p_cmd_buf;
uint8_t *p_cmd_start, *p;
p_cmd_buf = rw_t3t_get_cmd_buf();
if (p_cmd_buf != nullptr) {
/* Construct T3T message */
p = p_cmd_start = (uint8_t*)(p_cmd_buf + 1) + p_cmd_buf->offset;
/* Calculate number of ndef bytes remaining to read */
ndef_bytes_remaining = p_cb->ndef_attrib.ln - p_cb->ndef_rx_offset;
/* Calculate number of blocks remaining to read */
ndef_blocks_remaining =
(uint16_t)((ndef_bytes_remaining + 15) >>
4); /* ndef blocks remaining (rounded upward) */
/* Calculate first NDEF block ID */
first_block_to_read = (uint16_t)((p_cb->ndef_rx_offset >> 4) + 1);
/* Check if remaining blocks can fit into one CHECK command */
if (ndef_blocks_remaining <= p_cb->ndef_attrib.nbr) {
/* remaining blocks can fit into one CHECK command */
cur_blocks_to_read = ndef_blocks_remaining;
p_cb->ndef_rx_readlen = ndef_bytes_remaining;
p_cb->flags |= RW_T3T_FL_IS_FINAL_NDEF_SEGMENT;
} else {
/* Remaining blocks cannot fit into one CHECK command */
cur_blocks_to_read =
p_cb->ndef_attrib
.nbr; /* Read maximum number of blocks allowed by the peer */
p_cb->ndef_rx_readlen = ((uint32_t)p_cb->ndef_attrib.nbr * 16);
}
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"bytes_remaining: %i, cur_blocks_to_read: %i, is_final: %i",
ndef_bytes_remaining, cur_blocks_to_read,
(p_cb->flags & RW_T3T_FL_IS_FINAL_NDEF_SEGMENT));
/* Add CHECK opcode to message */
UINT8_TO_STREAM(p, T3T_MSG_OPC_CHECK_CMD);
/* Add IDm to message */
ARRAY_TO_STREAM(p, p_cb->peer_nfcid2, NCI_NFCID2_LEN);
/* Add Service code list */
UINT8_TO_STREAM(p, 1); /* Number of services (only 1 service: NDEF) */
/* Service code (little-endian format) . If NDEF is read-only, then use
* T3T_MSG_NDEF_SC_RO, otherwise use T3T_MSG_NDEF_SC_RW */
if (p_cb->ndef_attrib.rwflag == T3T_MSG_NDEF_RWFLAG_RO) {
UINT16_TO_STREAM(p, T3T_MSG_NDEF_SC_RO);
} else {
UINT16_TO_STREAM(p, T3T_MSG_NDEF_SC_RW);
}
/* Add number of blocks in this CHECK command */
UINT8_TO_STREAM(
p, cur_blocks_to_read); /* Number of blocks to check in this command */
for (block_id = first_block_to_read;
block_id < (first_block_to_read + cur_blocks_to_read); block_id++) {
if (block_id < 256) {
/* Block IDs 0-255 can be specified in '2-byte' format: byte0=0,
* byte1=blocknumber */
UINT8_TO_STREAM(
p, T3T_MSG_MASK_TWO_BYTE_BLOCK_DESC_FORMAT); /* byte1: len=0;
access-mode=0;
service code list
order=0 */
UINT8_TO_STREAM(p, block_id); /* byte1: block number */
} else {
/* Block IDs 256+ must be specified in '3-byte' format: byte0=80h,
* followed by blocknumber */
UINT8_TO_STREAM(
p,
0x00); /* byte0: len=1; access-mode=0; service code list order=0 */
UINT16_TO_STREAM(
p, block_id); /* byte1-2: block number in little-endian format */
}
}
/* Calculate length of message */
p_cmd_buf->len = (uint16_t)(p - p_cmd_start);
/* Send the T3T message */
retval = rw_t3t_send_cmd(p_cb, RW_T3T_CMD_CHECK_NDEF, p_cmd_buf,
rw_t3t_check_timeout(cur_blocks_to_read));
} else {
retval = NFC_STATUS_NO_BUFFERS;
}
return (retval);
}
/*****************************************************************************
**
** Function rw_t3t_message_set_block_list
**
** Description Add block list to T3T message
**
** Returns Number of bytes added to message
**
*****************************************************************************/
void rw_t3t_message_set_block_list(tRW_T3T_CB* p_cb, uint8_t** p,
uint8_t num_blocks,
tT3T_BLOCK_DESC* p_t3t_blocks) {
uint16_t i, cur_service_code;
uint8_t service_code_idx, num_services = 0;
uint8_t* p_msg_num_services;
uint16_t service_list[T3T_MSG_SERVICE_LIST_MAX];
/* Add CHECK or UPDATE opcode to message */
UINT8_TO_STREAM(
(*p), ((p_cb->cur_cmd == RW_T3T_CMD_CHECK) ? T3T_MSG_OPC_CHECK_CMD
: T3T_MSG_OPC_UPDATE_CMD));
/* Add IDm to message */
ARRAY_TO_STREAM((*p), p_cb->peer_nfcid2, NCI_NFCID2_LEN);
/* Skip over Number of Services field */
p_msg_num_services = (*p); /* pointer to Number of Services offset */
(*p)++;
/* Count number of different services are specified in the list, and add
* services to Service Code list */
for (i = 0; i < num_blocks; i++) {
cur_service_code = p_t3t_blocks[i].service_code;
/* Check if current service_code is already in the service_list */
for (service_code_idx = 0; service_code_idx < num_services;
service_code_idx++) {
if (service_list[service_code_idx] == cur_service_code) break;
}
if (service_code_idx == num_services) {
/* Service not in the list yet. Add it. */
service_list[service_code_idx] = cur_service_code;
num_services++;
/* Add service code to T3T message */
UINT16_TO_STREAM((*p), cur_service_code);
}
}
/* Add 'Number of Sservices' to the message */
*p_msg_num_services = num_services;
/* Add 'number of blocks' to the message */
UINT8_TO_STREAM((*p), num_blocks);
/* Add block descriptors */
for (i = 0; i < num_blocks; i++) {
cur_service_code = p_t3t_blocks[i].service_code;
/* Check if current service_code is already in the service_list */
for (service_code_idx = 0; service_code_idx < num_services;
service_code_idx++) {
if (service_list[service_code_idx] == cur_service_code) break;
}
/* Add decriptor to T3T message */
if (p_t3t_blocks[i].block_number > 0xFF) {
UINT8_TO_STREAM((*p), service_code_idx);
UINT16_TO_STREAM((*p), p_t3t_blocks[i].block_number);
} else {
service_code_idx |= T3T_MSG_MASK_TWO_BYTE_BLOCK_DESC_FORMAT;
UINT8_TO_STREAM((*p), service_code_idx);
UINT8_TO_STREAM((*p), p_t3t_blocks[i].block_number);
}
}
}
/*****************************************************************************
**
** Function rw_t3t_send_check_cmd
**
** Description Send CHECK command
**
** Returns tNFC_STATUS
**
*****************************************************************************/
tNFC_STATUS rw_t3t_send_check_cmd(tRW_T3T_CB* p_cb, uint8_t num_blocks,
tT3T_BLOCK_DESC* p_t3t_blocks) {
NFC_HDR* p_cmd_buf;
uint8_t *p, *p_cmd_start;
tNFC_STATUS retval = NFC_STATUS_OK;
p_cb->cur_cmd = RW_T3T_CMD_CHECK;
p_cmd_buf = rw_t3t_get_cmd_buf();
if (p_cmd_buf != nullptr) {
/* Construct T3T message */
p = p_cmd_start = (uint8_t*)(p_cmd_buf + 1) + p_cmd_buf->offset;
rw_t3t_message_set_block_list(p_cb, &p, num_blocks, p_t3t_blocks);
/* Calculate length of message */
p_cmd_buf->len = (uint16_t)(p - p_cmd_start);
/* Send the T3T message */
retval = rw_t3t_send_cmd(p_cb, RW_T3T_CMD_CHECK, p_cmd_buf,
rw_t3t_check_timeout(num_blocks));
} else {
retval = NFC_STATUS_NO_BUFFERS;
}
return (retval);
}
/*****************************************************************************
**
** Function rw_t3t_send_update_cmd
**
** Description Send UPDATE command
**
** Returns tNFC_STATUS
**
*****************************************************************************/
tNFC_STATUS rw_t3t_send_update_cmd(tRW_T3T_CB* p_cb, uint8_t num_blocks,
tT3T_BLOCK_DESC* p_t3t_blocks,
uint8_t* p_data) {
NFC_HDR* p_cmd_buf;
uint8_t *p, *p_cmd_start;
tNFC_STATUS retval = NFC_STATUS_OK;
p_cb->cur_cmd = RW_T3T_CMD_UPDATE;
p_cmd_buf = rw_t3t_get_cmd_buf();
if (p_cmd_buf != nullptr) {
/* Construct T3T message */
p = p_cmd_start = (uint8_t*)(p_cmd_buf + 1) + p_cmd_buf->offset;
rw_t3t_message_set_block_list(p_cb, &p, num_blocks, p_t3t_blocks);
/* Add data blocks to the message */
ARRAY_TO_STREAM(p, p_data, num_blocks * 16);
/* Calculate length of message */
p_cmd_buf->len = (uint16_t)(p - p_cmd_start);
/* Send the T3T message */
retval = rw_t3t_send_cmd(p_cb, RW_T3T_CMD_UPDATE, p_cmd_buf,
rw_t3t_update_timeout(num_blocks));
} else {
retval = NFC_STATUS_NO_BUFFERS;
}
return (retval);
}
/*****************************************************************************
**
** Function rw_t3t_check_mc_block
**
** Description Send command to check Memory Configuration Block
**
** Returns tNFC_STATUS
**
*****************************************************************************/
tNFC_STATUS rw_t3t_check_mc_block(tRW_T3T_CB* p_cb) {
NFC_HDR* p_cmd_buf;
uint8_t *p, *p_cmd_start;
/* Read Memory Configuration block */
p_cmd_buf = rw_t3t_get_cmd_buf();
if (p_cmd_buf != nullptr) {
/* Construct T3T message */
p = p_cmd_start = (uint8_t*)(p_cmd_buf + 1) + p_cmd_buf->offset;
/* Add CHECK opcode to message */
UINT8_TO_STREAM(p, T3T_MSG_OPC_CHECK_CMD);
/* Add IDm to message */
ARRAY_TO_STREAM(p, p_cb->peer_nfcid2, NCI_NFCID2_LEN);
/* Add Service code list */
UINT8_TO_STREAM(p, 1); /* Number of services (only 1 service: NDEF) */
UINT16_TO_STREAM(
p, T3T_MSG_NDEF_SC_RO); /* Service code (little-endian format) */
/* Number of blocks */
UINT8_TO_STREAM(p, 1); /* Number of blocks (only 1 block: Memory
Configuration Information ) */
/* Block List element: the Memory Configuration block (block 0x88) */
UINT8_TO_STREAM(p, T3T_MSG_MASK_TWO_BYTE_BLOCK_DESC_FORMAT);
UINT8_TO_STREAM(p, T3T_MSG_FELICALITE_BLOCK_ID_MC);
/* Calculate length of message */
p_cmd_buf->len = (uint16_t)(p - p_cmd_start);
/* Send the T3T message */
return rw_t3t_send_cmd(p_cb, p_cb->cur_cmd, p_cmd_buf,
rw_t3t_check_timeout(1));
} else {
LOG(ERROR) << StringPrintf("Unable to allocate buffer to read MC block");
return (NFC_STATUS_NO_BUFFERS);
}
}
/*****************************************************************************
**
** Function rw_t3t_send_raw_frame
**
** Description Send raw frame
**
** Returns tNFC_STATUS
**
*****************************************************************************/
tNFC_STATUS rw_t3t_send_raw_frame(tRW_T3T_CB* p_cb, uint16_t len,
uint8_t* p_data) {
NFC_HDR* p_cmd_buf;
uint8_t* p;
tNFC_STATUS retval = NFC_STATUS_OK;
p_cmd_buf = rw_t3t_get_cmd_buf();
if (p_cmd_buf != nullptr) {
/* Construct T3T message */
p = (uint8_t*)(p_cmd_buf + 1) + p_cmd_buf->offset;
/* Add data blocks to the message */
ARRAY_TO_STREAM(p, p_data, len);
/* Calculate length of message */
p_cmd_buf->len = len;
/* Send the T3T message */
retval = rw_t3t_send_cmd(p_cb, RW_T3T_CMD_SEND_RAW_FRAME, p_cmd_buf,
RW_T3T_RAW_FRAME_CMD_TIMEOUT_TICKS);
} else {
retval = NFC_STATUS_NO_BUFFERS;
}
return (retval);
}
/*****************************************************************************
** TAG RESPONSE HANDLERS
*****************************************************************************/
/*****************************************************************************
**
** Function rw_t3t_act_handle_ndef_detect_rsp
**
** Description Handle response to NDEF detection
**
** Returns Nothing
**
*****************************************************************************/
void rw_t3t_act_handle_ndef_detect_rsp(tRW_T3T_CB* p_cb, NFC_HDR* p_msg_rsp) {
uint8_t* p;
uint32_t temp;
uint8_t i;
uint16_t checksum_calc, checksum_rx;
tRW_DETECT_NDEF_DATA evt_data;
uint8_t* p_t3t_rsp = (uint8_t*)(p_msg_rsp + 1) + p_msg_rsp->offset;
evt_data.status = NFC_STATUS_FAILED;
evt_data.flags = RW_NDEF_FL_UNKNOWN;
/* Check if response code is CHECK resp (for reading NDEF attribute block) */
if (p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE] != T3T_MSG_OPC_CHECK_RSP) {
LOG(ERROR) << StringPrintf(
"Response error: expecting rsp_code %02X, but got %02X",
T3T_MSG_OPC_CHECK_RSP, p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE]);
evt_data.status = NFC_STATUS_FAILED;
}
/* Validate status code and NFCID2 response from tag */
else if ((p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1] !=
T3T_MSG_RSP_STATUS_OK) /* verify response status code */
|| (memcmp(p_cb->peer_nfcid2, &p_t3t_rsp[T3T_MSG_RSP_OFFSET_IDM],
NCI_NFCID2_LEN) != 0)) /* verify response IDm */
{
evt_data.status = NFC_STATUS_FAILED;
} else if (p_msg_rsp->len <
(T3T_MSG_RSP_OFFSET_CHECK_DATA + T3T_MSG_BLOCKSIZE)) {
evt_data.status = NFC_STATUS_FAILED;
android_errorWriteLog(0x534e4554, "120428041");
} else {
/* Get checksum from received ndef attribute msg */
p = &p_t3t_rsp[T3T_MSG_RSP_OFFSET_CHECK_DATA + T3T_MSG_NDEF_ATTR_INFO_SIZE];
BE_STREAM_TO_UINT16(checksum_rx, p);
/* Calculate checksum - move check for checsum to beginning */
checksum_calc = 0;
p = &p_t3t_rsp[T3T_MSG_RSP_OFFSET_CHECK_DATA];
for (i = 0; i < T3T_MSG_NDEF_ATTR_INFO_SIZE; i++) {
checksum_calc += p[i];
}
/* Validate checksum */
if (checksum_calc != checksum_rx) {
p_cb->ndef_attrib.status =
NFC_STATUS_FAILED; /* only ok or failed passed to the app. can be
boolean*/
LOG(ERROR) << StringPrintf("RW_T3tDetectNDEF checksum failed");
} else {
p_cb->ndef_attrib.status = NFC_STATUS_OK;
/* Validate version number */
STREAM_TO_UINT8(p_cb->ndef_attrib.version, p);
if (T3T_GET_MAJOR_VERSION(T3T_MSG_NDEF_VERSION) <
T3T_GET_MAJOR_VERSION(p_cb->ndef_attrib.version)) {
/* Remote tag's MajorVer is newer than our's. Reject NDEF as per T3TOP
* RQ_T3T_NDA_024 */
LOG(ERROR) << StringPrintf(
"RW_T3tDetectNDEF: incompatible NDEF version. Local=0x%02x, "
"Remote=0x%02x",
T3T_MSG_NDEF_VERSION, p_cb->ndef_attrib.version);
p_cb->ndef_attrib.status = NFC_STATUS_FAILED;
evt_data.status = NFC_STATUS_BAD_RESP;
} else {
/* Remote tag's MajorVer is equal or older than our's. NDEF is
* compatible with our version. */
/* Update NDEF info */
STREAM_TO_UINT8(
p_cb->ndef_attrib.nbr,
p); /* NBr: number of blocks that can be read using one Check
command */
STREAM_TO_UINT8(p_cb->ndef_attrib.nbw,
p); /* Nbw: number of blocks that can be written using
one Update command */
BE_STREAM_TO_UINT16(
p_cb->ndef_attrib.nmaxb,
p); /* Nmaxb: maximum number of blocks available for NDEF data */
BE_STREAM_TO_UINT32(temp, p);
STREAM_TO_UINT8(p_cb->ndef_attrib.writef,
p); /* WriteFlag: 00h if writing data finished; 0Fh if
writing data in progress */
STREAM_TO_UINT8(
p_cb->ndef_attrib.rwflag,
p); /* RWFlag: 00h NDEF is read-only; 01h if read/write available */
/* Get length (3-byte, big-endian) */
STREAM_TO_UINT8(temp, p); /* Ln: high-byte */
BE_STREAM_TO_UINT16(p_cb->ndef_attrib.ln, p); /* Ln: lo-word */
p_cb->ndef_attrib.ln += (temp << 16);
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"Detected NDEF Ver: 0x%02x", p_cb->ndef_attrib.version);
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"Detected NDEF Attributes: Nbr=%i, Nbw=%i, Nmaxb=%i, WriteF=%i, "
"RWFlag=%i, Ln=%i",
p_cb->ndef_attrib.nbr, p_cb->ndef_attrib.nbw,
p_cb->ndef_attrib.nmaxb, p_cb->ndef_attrib.writef,
p_cb->ndef_attrib.rwflag, p_cb->ndef_attrib.ln);
/* Set data for RW_T3T_NDEF_DETECT_EVT */
evt_data.status = p_cb->ndef_attrib.status;
evt_data.cur_size = p_cb->ndef_attrib.ln;
evt_data.max_size = (uint32_t)p_cb->ndef_attrib.nmaxb * 16;
evt_data.protocol = NFC_PROTOCOL_T3T;
evt_data.flags = (RW_NDEF_FL_SUPPORTED | RW_NDEF_FL_FORMATED);
if (p_cb->ndef_attrib.rwflag == T3T_MSG_NDEF_RWFLAG_RO)
evt_data.flags |= RW_NDEF_FL_READ_ONLY;
}
}
}
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("RW_T3tDetectNDEF response: %i", evt_data.status);
p_cb->rw_state = RW_T3T_STATE_IDLE;
rw_t3t_update_ndef_flag(&evt_data.flags);
/* Notify app of NDEF detection result */
tRW_DATA rw_data;
rw_data.ndef = evt_data;
(*(rw_cb.p_cback))(RW_T3T_NDEF_DETECT_EVT, &rw_data);
GKI_freebuf(p_msg_rsp);
}
/*****************************************************************************
**
** Function rw_t3t_act_handle_check_rsp
**
** Description Handle response to CHECK command
**
** Returns Nothing
**
*****************************************************************************/
void rw_t3t_act_handle_check_rsp(tRW_T3T_CB* p_cb, NFC_HDR* p_msg_rsp) {
uint8_t* p_t3t_rsp = (uint8_t*)(p_msg_rsp + 1) + p_msg_rsp->offset;
tRW_READ_DATA evt_data;
tNFC_STATUS nfc_status = NFC_STATUS_OK;
/* Validate response from tag */
if ((p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1] !=
T3T_MSG_RSP_STATUS_OK) /* verify response status code */
|| (memcmp(p_cb->peer_nfcid2, &p_t3t_rsp[T3T_MSG_RSP_OFFSET_IDM],
NCI_NFCID2_LEN) != 0)) /* verify response IDm */
{
nfc_status = NFC_STATUS_FAILED;
GKI_freebuf(p_msg_rsp);
} else if (p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE] != T3T_MSG_OPC_CHECK_RSP) {
LOG(ERROR) << StringPrintf(
"Response error: expecting rsp_code %02X, but got %02X",
T3T_MSG_OPC_CHECK_RSP, p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE]);
nfc_status = NFC_STATUS_FAILED;
GKI_freebuf(p_msg_rsp);
} else if (p_msg_rsp->len >= T3T_MSG_RSP_OFFSET_CHECK_DATA) {
/* Copy incoming data into buffer */
p_msg_rsp->offset +=
T3T_MSG_RSP_OFFSET_CHECK_DATA; /* Skip over t3t header */
p_msg_rsp->len -= T3T_MSG_RSP_OFFSET_CHECK_DATA;
evt_data.status = NFC_STATUS_OK;
evt_data.p_data = p_msg_rsp;
tRW_DATA rw_data;
rw_data.data = evt_data;
(*(rw_cb.p_cback))(RW_T3T_CHECK_EVT, &rw_data);
} else {
android_errorWriteLog(0x534e4554, "120503926");
nfc_status = NFC_STATUS_FAILED;
GKI_freebuf(p_msg_rsp);
}
p_cb->rw_state = RW_T3T_STATE_IDLE;
tRW_DATA rw_data;
rw_data.status = nfc_status;
(*(rw_cb.p_cback))(RW_T3T_CHECK_CPLT_EVT, &rw_data);
}
/*****************************************************************************
**
** Function rw_t3t_act_handle_update_rsp
**
** Description Handle response to UPDATE command
**
** Returns Nothing
**
*****************************************************************************/
void rw_t3t_act_handle_update_rsp(tRW_T3T_CB* p_cb, NFC_HDR* p_msg_rsp) {
uint8_t* p_t3t_rsp = (uint8_t*)(p_msg_rsp + 1) + p_msg_rsp->offset;
tRW_READ_DATA evt_data;
/* Validate response from tag */
if ((p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1] !=
T3T_MSG_RSP_STATUS_OK) /* verify response status code */
|| (memcmp(p_cb->peer_nfcid2, &p_t3t_rsp[T3T_MSG_RSP_OFFSET_IDM],
NCI_NFCID2_LEN) != 0)) /* verify response IDm */
{
evt_data.status = NFC_STATUS_FAILED;
} else if (p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE] != T3T_MSG_OPC_UPDATE_RSP) {
LOG(ERROR) << StringPrintf(
"Response error: expecting rsp_code %02X, but got %02X",
T3T_MSG_OPC_UPDATE_RSP, p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE]);
evt_data.status = NFC_STATUS_FAILED;
} else {
/* Copy incoming data into buffer */
evt_data.status = NFC_STATUS_OK;
}
p_cb->rw_state = RW_T3T_STATE_IDLE;
tRW_DATA rw_data;
rw_data.data = evt_data;
(*(rw_cb.p_cback))(RW_T3T_UPDATE_CPLT_EVT, &rw_data);
GKI_freebuf(p_msg_rsp);
}
/*****************************************************************************
**
** Function rw_t3t_act_handle_raw_senddata_rsp
**
** Description Handle response to NDEF detection
**
** Returns Nothing
**
*****************************************************************************/
void rw_t3t_act_handle_raw_senddata_rsp(tRW_T3T_CB* p_cb,
tNFC_DATA_CEVT* p_data) {
tRW_READ_DATA evt_data;
NFC_HDR* p_pkt = p_data->p_data;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("RW T3T Raw Frame: Len [0x%X] Status [%s]", p_pkt->len,
NFC_GetStatusName(p_data->status).c_str());
/* Copy incoming data into buffer */
evt_data.status = p_data->status;
evt_data.p_data = p_pkt;
p_cb->rw_state = RW_T3T_STATE_IDLE;
tRW_DATA rw_data;
rw_data.data = evt_data;
(*(rw_cb.p_cback))(RW_T3T_RAW_FRAME_EVT, &rw_data);
}
/*****************************************************************************
**
** Function rw_t3t_act_handle_check_ndef_rsp
**
** Description Handle response to NDEF read segment
**
** Returns Nothing
**
*****************************************************************************/
void rw_t3t_act_handle_check_ndef_rsp(tRW_T3T_CB* p_cb, NFC_HDR* p_msg_rsp) {
bool check_complete = true;
tNFC_STATUS nfc_status = NFC_STATUS_OK;
uint8_t* p_t3t_rsp = (uint8_t*)(p_msg_rsp + 1) + p_msg_rsp->offset;
uint8_t rsp_num_bytes_rx;
if (p_msg_rsp->len < T3T_MSG_RSP_OFFSET_CHECK_DATA) {
LOG(ERROR) << StringPrintf("%s invalid len", __func__);
nfc_status = NFC_STATUS_FAILED;
GKI_freebuf(p_msg_rsp);
android_errorWriteLog(0x534e4554, "120428637");
/* Validate response from tag */
} else if ((p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1] !=
T3T_MSG_RSP_STATUS_OK) /* verify response status code */
|| (memcmp(p_cb->peer_nfcid2, &p_t3t_rsp[T3T_MSG_RSP_OFFSET_IDM],
NCI_NFCID2_LEN) != 0) /* verify response IDm */
|| (p_t3t_rsp[T3T_MSG_RSP_OFFSET_NUMBLOCKS] !=
((p_cb->ndef_rx_readlen + 15) >>
4))) /* verify length of response */
{
LOG(ERROR) << StringPrintf(
"Response error: bad status, nfcid2, or invalid len: %i %i",
p_t3t_rsp[T3T_MSG_RSP_OFFSET_NUMBLOCKS],
((p_cb->ndef_rx_readlen + 15) >> 4));
nfc_status = NFC_STATUS_FAILED;
GKI_freebuf(p_msg_rsp);
} else if (p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE] != T3T_MSG_OPC_CHECK_RSP) {
LOG(ERROR) << StringPrintf(
"Response error: expecting rsp_code %02X, but got %02X",
T3T_MSG_OPC_CHECK_RSP, p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE]);
nfc_status = NFC_STATUS_FAILED;
GKI_freebuf(p_msg_rsp);
} else if (p_msg_rsp->len >= T3T_MSG_RSP_OFFSET_CHECK_DATA &&
p_t3t_rsp[T3T_MSG_RSP_OFFSET_NUMBLOCKS] > 0) {
/* Notify app of NDEF segment received */
/* Number of bytes received, according to header */
rsp_num_bytes_rx = p_t3t_rsp[T3T_MSG_RSP_OFFSET_NUMBLOCKS] * 16;
p_cb->ndef_rx_offset += p_cb->ndef_rx_readlen;
p_msg_rsp->offset +=
T3T_MSG_RSP_OFFSET_CHECK_DATA; /* Skip over t3t header (point to block
data) */
p_msg_rsp->len -= T3T_MSG_RSP_OFFSET_CHECK_DATA;
/* Verify that the bytes received is really the amount indicated in the
* check-response header */
if (rsp_num_bytes_rx > p_msg_rsp->len) {
LOG(ERROR) << StringPrintf(
"Response error: CHECK rsp header indicates %i bytes, but only "
"received %i bytes",
rsp_num_bytes_rx, p_msg_rsp->len);
nfc_status = NFC_STATUS_FAILED;
GKI_freebuf(p_msg_rsp);
} else {
/* If this is the the final block, then set len to reflect only valid
* bytes (do not include padding to 16-byte boundary) */
if ((p_cb->flags & RW_T3T_FL_IS_FINAL_NDEF_SEGMENT) &&
(p_cb->ndef_attrib.ln & 0x000F)) {
rsp_num_bytes_rx -= (16 - (p_cb->ndef_attrib.ln & 0x000F));
}
p_msg_rsp->len = rsp_num_bytes_rx;
tRW_DATA rw_data;
rw_data.data.status = NFC_STATUS_OK;
rw_data.data.p_data = p_msg_rsp;
(*(rw_cb.p_cback))(RW_T3T_CHECK_EVT, &rw_data);
/* Send CHECK cmd for next NDEF segment, if needed */
if (!(p_cb->flags & RW_T3T_FL_IS_FINAL_NDEF_SEGMENT)) {
nfc_status = rw_t3t_send_next_ndef_check_cmd(p_cb);
if (nfc_status == NFC_STATUS_OK) {
/* Still getting more segments. Don't send RW_T3T_CHECK_CPLT_EVT yet
*/
check_complete = false;
}
}
}
} else {
android_errorWriteLog(0x534e4554, "120502559");
GKI_freebuf(p_msg_rsp);
nfc_status = NFC_STATUS_FAILED;
LOG(ERROR) << StringPrintf("Underflow in p_msg_rsp->len!");
}
/* Notify app of RW_T3T_CHECK_CPLT_EVT if entire NDEF has been read, or if
* failure */
if (check_complete) {
p_cb->rw_state = RW_T3T_STATE_IDLE;
tRW_DATA evt_data;
evt_data.status = nfc_status;
(*(rw_cb.p_cback))(RW_T3T_CHECK_CPLT_EVT, &evt_data);
}
}
/*****************************************************************************
**
** Function rw_t3t_act_handle_update_ndef_rsp
**
** Description Handle response to NDEF write segment
**
** Returns Nothing
**
*****************************************************************************/
void rw_t3t_act_handle_update_ndef_rsp(tRW_T3T_CB* p_cb, NFC_HDR* p_msg_rsp) {
bool update_complete = true;
tNFC_STATUS nfc_status = NFC_STATUS_OK;
uint8_t* p_t3t_rsp = (uint8_t*)(p_msg_rsp + 1) + p_msg_rsp->offset;
/* Check nfcid2 and status of response */
if ((p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1] !=
T3T_MSG_RSP_STATUS_OK) /* verify response status code */
|| (memcmp(p_cb->peer_nfcid2, &p_t3t_rsp[T3T_MSG_RSP_OFFSET_IDM],
NCI_NFCID2_LEN) != 0)) /* verify response IDm */
{
nfc_status = NFC_STATUS_FAILED;
}
/* Validate response opcode */
else if (p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE] != T3T_MSG_OPC_UPDATE_RSP) {
LOG(ERROR) << StringPrintf(
"Response error: expecting rsp_code %02X, but got %02X",
T3T_MSG_OPC_UPDATE_RSP, p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE]);
nfc_status = NFC_STATUS_FAILED;
}
/* If this is response to final UPDATE, then update NDEF local size */
else if (p_cb->flags & RW_T3T_FL_IS_FINAL_NDEF_SEGMENT) {
/* If successful, update current NDEF size */
p_cb->ndef_attrib.ln = p_cb->ndef_msg_len;
}
/* If any more NDEF bytes to update, then send next UPDATE command */
else if (p_cb->ndef_msg_bytes_sent < p_cb->ndef_msg_len) {
/* Send UPDATE command for next segment of NDEF */
nfc_status = rw_t3t_send_next_ndef_update_cmd(p_cb);
if (nfc_status == NFC_STATUS_OK) {
/* Wait for update response */
update_complete = false;
}
}
/* Otherwise, no more NDEF bytes. Send final UPDATE for Attribute Information
block */
else {
p_cb->flags |= RW_T3T_FL_IS_FINAL_NDEF_SEGMENT;
nfc_status = rw_t3t_send_update_ndef_attribute_cmd(p_cb, false);
if (nfc_status == NFC_STATUS_OK) {
/* Wait for update response */
update_complete = false;
}
}
/* If update is completed, then notify app */
if (update_complete) {
p_cb->rw_state = RW_T3T_STATE_IDLE;
tRW_DATA evt_data;
evt_data.status = nfc_status;
(*(rw_cb.p_cback))(RW_T3T_UPDATE_CPLT_EVT, &evt_data);
}
GKI_freebuf(p_msg_rsp);
return;
}
/*****************************************************************************
**
** Function rw_t3t_handle_get_sc_poll_rsp
**
** Description Handle POLL response for getting system codes
**
** Returns Nothing
**
*****************************************************************************/
static void rw_t3t_handle_get_sc_poll_rsp(tRW_T3T_CB* p_cb, uint8_t nci_status,
uint8_t num_responses,
uint8_t sensf_res_buf_size,
uint8_t* p_sensf_res_buf) {
uint8_t* p;
uint16_t sc;
/* Get the system code from the response */
if ((nci_status == NCI_STATUS_OK) && (num_responses > 0) &&
(sensf_res_buf_size >=
(RW_T3T_SENSF_RES_RD_OFFSET + RW_T3T_SENSF_RES_RD_LEN))) {
p = &p_sensf_res_buf[RW_T3T_SENSF_RES_RD_OFFSET];
BE_STREAM_TO_UINT16(sc, p);
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("FeliCa detected (RD, system code %04X)", sc);
if (p_cb->num_system_codes < T3T_MAX_SYSTEM_CODES) {
p_cb->system_codes[p_cb->num_system_codes++] = sc;
} else {
LOG(ERROR) << StringPrintf("Exceed T3T_MAX_SYSTEM_CODES!");
android_errorWriteLog(0x534e4554, "120499324");
}
}
rw_t3t_handle_get_system_codes_cplt();
}
/*****************************************************************************
**
** Function rw_t3t_handle_ndef_detect_poll_rsp
**
** Description Handle POLL response for getting system codes
**
** Returns Nothing
**
*****************************************************************************/
static void rw_t3t_handle_ndef_detect_poll_rsp(tRW_T3T_CB* p_cb,
uint8_t nci_status,
uint8_t num_responses) {
NFC_HDR* p_cmd_buf;
uint8_t *p, *p_cmd_start;
tRW_DATA evt_data;
/* Validate response for NDEF poll */
if ((nci_status == NCI_STATUS_OK) && (num_responses > 0)) {
/* Tag responded for NDEF poll */
/* Read NDEF attribute block */
p_cmd_buf = rw_t3t_get_cmd_buf();
if (p_cmd_buf != nullptr) {
/* Construct T3T message */
p = p_cmd_start = (uint8_t*)(p_cmd_buf + 1) + p_cmd_buf->offset;
/* Add CHECK opcode to message */
UINT8_TO_STREAM(p, T3T_MSG_OPC_CHECK_CMD);
/* Add IDm to message */
ARRAY_TO_STREAM(p, p_cb->peer_nfcid2, NCI_NFCID2_LEN);
/* Add Service code list */
UINT8_TO_STREAM(p, 1); /* Number of services (only 1 service: NDEF) */
UINT16_TO_STREAM(
p, T3T_MSG_NDEF_SC_RO); /* Service code (little-endian format) */
/* Number of blocks */
UINT8_TO_STREAM(
p,
1); /* Number of blocks (only 1 block: NDEF Attribute Information ) */
/* Block List element: the NDEF attribute information block (block 0) */
UINT8_TO_STREAM(p, T3T_MSG_MASK_TWO_BYTE_BLOCK_DESC_FORMAT);
UINT8_TO_STREAM(p, 0);
/* Calculate length of message */
p_cmd_buf->len = (uint16_t)(p - p_cmd_start);
/* Send the T3T message */
evt_data.status = rw_t3t_send_cmd(p_cb, RW_T3T_CMD_DETECT_NDEF, p_cmd_buf,
rw_t3t_check_timeout(1));
if (evt_data.status == NFC_STATUS_OK) {
/* CHECK command sent. Wait for response */
return;
}
}
nci_status = NFC_STATUS_FAILED;
}
/* NDEF detection failed */
p_cb->rw_state = RW_T3T_STATE_IDLE;
evt_data.ndef.status = nci_status;
evt_data.ndef.flags = RW_NDEF_FL_UNKNOWN;
rw_t3t_update_ndef_flag(&evt_data.ndef.flags);
(*(rw_cb.p_cback))(RW_T3T_NDEF_DETECT_EVT, &evt_data);
}
/*****************************************************************************
**
** Function rw_t3t_update_block
**
** Description Send UPDATE command for single block
** (for formatting/configuring read only)
**
** Returns tNFC_STATUS
**
*****************************************************************************/
tNFC_STATUS rw_t3t_update_block(tRW_T3T_CB* p_cb, uint8_t block_id,
uint8_t* p_block_data) {
uint8_t *p_dst, *p_cmd_start;
NFC_HDR* p_cmd_buf;
tNFC_STATUS status;
p_cmd_buf = rw_t3t_get_cmd_buf();
if (p_cmd_buf != nullptr) {
p_dst = p_cmd_start = (uint8_t*)(p_cmd_buf + 1) + p_cmd_buf->offset;
/* Add UPDATE opcode to message */
UINT8_TO_STREAM(p_dst, T3T_MSG_OPC_UPDATE_CMD);
/* Add IDm to message */
ARRAY_TO_STREAM(p_dst, p_cb->peer_nfcid2, NCI_NFCID2_LEN);
/* Add Service code list */
UINT8_TO_STREAM(p_dst, 1); /* Number of services (only 1 service: NDEF) */
UINT16_TO_STREAM(
p_dst, T3T_MSG_NDEF_SC_RW); /* Service code (little-endian format) */
/* Number of blocks */
UINT8_TO_STREAM(p_dst, 1);
/* Add Block list element for MC */
UINT8_TO_STREAM(p_dst, T3T_MSG_MASK_TWO_BYTE_BLOCK_DESC_FORMAT);
UINT8_TO_STREAM(p_dst, block_id);
/* Copy MC data to UPDATE message */
ARRAY_TO_STREAM(p_dst, p_block_data, T3T_MSG_BLOCKSIZE);
/* Calculate length of message */
p_cmd_buf->len = (uint16_t)(p_dst - p_cmd_start);
/* Send the T3T message */
status = rw_t3t_send_cmd(p_cb, p_cb->cur_cmd, p_cmd_buf,
rw_t3t_update_timeout(1));
} else {
/* Unable to send UPDATE command */
status = NFC_STATUS_NO_BUFFERS;
}
return (status);
}
/*****************************************************************************
**
** Function rw_t3t_handle_fmt_poll_rsp
**
** Description Handle POLL response for formatting felica-lite
**
** Returns Nothing
**
*****************************************************************************/
static void rw_t3t_handle_fmt_poll_rsp(tRW_T3T_CB* p_cb, uint8_t nci_status,
uint8_t num_responses) {
tRW_DATA evt_data;
evt_data.status = NFC_STATUS_OK;
/* Validate response for poll response */
if ((nci_status == NCI_STATUS_OK) && (num_responses > 0)) {
/* Tag responded for Felica-Lite poll */
/* Get MemoryControl block */
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"Felica-Lite tag detected...getting Memory Control block.");
p_cb->rw_substate = RW_T3T_FMT_SST_CHECK_MC_BLK;
/* Send command to check Memory Configuration block */
evt_data.status = rw_t3t_check_mc_block(p_cb);
} else {
LOG(ERROR) << StringPrintf("Felica-Lite tag not detected");
evt_data.status = NFC_STATUS_FAILED;
}
/* If error, notify upper layer */
if (evt_data.status != NFC_STATUS_OK) {
rw_t3t_format_cplt(evt_data.status);
}
}
/*****************************************************************************
**
** Function rw_t3t_act_handle_fmt_rsp
**
** Description Handle response for formatting codes
**
** Returns Nothing
**
*****************************************************************************/
void rw_t3t_act_handle_fmt_rsp(tRW_T3T_CB* p_cb, NFC_HDR* p_msg_rsp) {
uint8_t* p_t3t_rsp = (uint8_t*)(p_msg_rsp + 1) + p_msg_rsp->offset;
uint8_t* p_mc;
tRW_DATA evt_data;
evt_data.status = NFC_STATUS_OK;
/* Check tags's response for reading MemoryControl block */
if (p_cb->rw_substate == RW_T3T_FMT_SST_CHECK_MC_BLK) {
/* Validate response opcode */
if (p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE] != T3T_MSG_OPC_CHECK_RSP) {
LOG(ERROR) << StringPrintf(
"Response error: expecting rsp_code %02X, but got %02X",
T3T_MSG_OPC_CHECK_RSP, p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE]);
evt_data.status = NFC_STATUS_FAILED;
}
/* Validate status code and NFCID2 response from tag */
else if ((p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1] !=
T3T_MSG_RSP_STATUS_OK) /* verify response status code */
|| (memcmp(p_cb->peer_nfcid2, &p_t3t_rsp[T3T_MSG_RSP_OFFSET_IDM],
NCI_NFCID2_LEN) != 0)) /* verify response IDm */
{
evt_data.status = NFC_STATUS_FAILED;
} else if (p_msg_rsp->len <
(T3T_MSG_RSP_OFFSET_CHECK_DATA + T3T_MSG_BLOCKSIZE)) {
evt_data.status = NFC_STATUS_FAILED;
android_errorWriteLog(0x534e4554, "120506143");
} else {
/* Check if memory configuration (MC) block to see if SYS_OP=1 (NDEF
* enabled) */
p_mc = &p_t3t_rsp[T3T_MSG_RSP_OFFSET_CHECK_DATA]; /* Point to MC data of
CHECK response */
if (p_mc[T3T_MSG_FELICALITE_MC_OFFSET_SYS_OP] != 0x01) {
/* Tag is not currently enabled for NDEF. Indicate that we need to
* update the MC block */
/* Set SYS_OP field to 0x01 (enable NDEF) */
p_mc[T3T_MSG_FELICALITE_MC_OFFSET_SYS_OP] = 0x01;
/* Set RF_PRM field to 0x07 (procedure of issuance) */
p_mc[T3T_MSG_FELICALITE_MC_OFFSET_RF_PRM] = 0x07;
/* Construct and send UPDATE message to write MC block */
p_cb->rw_substate = RW_T3T_FMT_SST_UPDATE_MC_BLK;
evt_data.status =
rw_t3t_update_block(p_cb, T3T_MSG_FELICALITE_BLOCK_ID_MC, p_mc);
} else {
/* SYS_OP=1: ndef already enabled. Just need to update attribute
* information block */
p_cb->rw_substate = RW_T3T_FMT_SST_UPDATE_NDEF_ATTRIB;
evt_data.status =
rw_t3t_update_block(p_cb, 0, (uint8_t*)rw_t3t_default_attrib_info);
}
}
/* If error, notify upper layer */
if (evt_data.status != NFC_STATUS_OK) {
rw_t3t_format_cplt(evt_data.status);
}
} else if (p_cb->rw_substate == RW_T3T_FMT_SST_UPDATE_MC_BLK) {
/* Validate response opcode */
if ((p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE] != T3T_MSG_OPC_UPDATE_RSP) ||
(p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1] != T3T_MSG_RSP_STATUS_OK))
{
LOG(ERROR) << StringPrintf("Response error: rsp_code=%02X, status=%02X",
p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE],
p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1]);
evt_data.status = NFC_STATUS_FAILED;
} else {
/* SYS_OP=1: ndef already enabled. Just need to update attribute
* information block */
p_cb->rw_substate = RW_T3T_FMT_SST_UPDATE_NDEF_ATTRIB;
evt_data.status =
rw_t3t_update_block(p_cb, 0, (uint8_t*)rw_t3t_default_attrib_info);
}
/* If error, notify upper layer */
if (evt_data.status != NFC_STATUS_OK) {
rw_t3t_format_cplt(evt_data.status);
}
} else if (p_cb->rw_substate == RW_T3T_FMT_SST_UPDATE_NDEF_ATTRIB) {
/* Validate response opcode */
if ((p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE] != T3T_MSG_OPC_UPDATE_RSP) ||
(p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1] != T3T_MSG_RSP_STATUS_OK))
{
LOG(ERROR) << StringPrintf("Response error: rsp_code=%02X, status=%02X",
p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE],
p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1]);
evt_data.status = NFC_STATUS_FAILED;
}
rw_t3t_format_cplt(evt_data.status);
}
GKI_freebuf(p_msg_rsp);
}
/*****************************************************************************
**
** Function rw_t3t_handle_sro_poll_rsp
**
** Description Handle POLL response for configuring felica-lite read only
**
** Returns Nothing
**
*****************************************************************************/
static void rw_t3t_handle_sro_poll_rsp(tRW_T3T_CB* p_cb, uint8_t nci_status,
uint8_t num_responses) {
tRW_DATA evt_data;
uint8_t rw_t3t_ndef_attrib_info[T3T_MSG_BLOCKSIZE];
uint8_t* p;
uint8_t tempU8;
uint16_t checksum, i;
uint32_t tempU32 = 0;
evt_data.status = NFC_STATUS_OK;
/* Validate response for poll response */
if ((nci_status == NCI_STATUS_OK) && (num_responses > 0)) {
/* Tag responded for Felica-Lite poll */
if (p_cb->ndef_attrib.rwflag != T3T_MSG_NDEF_RWFLAG_RO) {
/* First update attribute information block */
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"Felica-Lite tag detected...update NDef attribution block.");
p_cb->rw_substate = RW_T3T_SRO_SST_UPDATE_NDEF_ATTRIB;
p = rw_t3t_ndef_attrib_info;
UINT8_TO_STREAM(p, p_cb->ndef_attrib.version);
/* Update NDEF info */
UINT8_TO_STREAM(
p, p_cb->ndef_attrib.nbr); /* NBr: number of blocks that can be read
using one Check command */
UINT8_TO_STREAM(p, p_cb->ndef_attrib.nbw); /* Nbw: number of blocks that
can be written using one
Update command */
UINT16_TO_BE_STREAM(
p, p_cb->ndef_attrib.nmaxb); /* Nmaxb: maximum number of blocks
available for NDEF data */
UINT32_TO_BE_STREAM(p, tempU32);
UINT8_TO_STREAM(p,
p_cb->ndef_attrib.writef); /* WriteFlag: 00h if writing
data finished; 0Fh if
writing data in progress */
UINT8_TO_STREAM(p, 0x00); /* RWFlag: 00h NDEF is read-only */
tempU8 = (uint8_t)(p_cb->ndef_attrib.ln >> 16);
/* Get length (3-byte, big-endian) */
UINT8_TO_STREAM(p, tempU8); /* Ln: high-byte */
UINT16_TO_BE_STREAM(p, p_cb->ndef_attrib.ln); /* Ln: lo-word */
/* Calculate and append Checksum */
checksum = 0;
for (i = 0; i < T3T_MSG_NDEF_ATTR_INFO_SIZE; i++) {
checksum += rw_t3t_ndef_attrib_info[i];
}
UINT16_TO_BE_STREAM(p, checksum);
evt_data.status =
rw_t3t_update_block(p_cb, 0, (uint8_t*)rw_t3t_ndef_attrib_info);
} else if (p_cb->cur_cmd == RW_T3T_CMD_SET_READ_ONLY_HARD) {
/* NDEF is already read only, Read and update MemoryControl block */
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"Felica-Lite tag detected...getting Memory Control block.");
p_cb->rw_substate = RW_T3T_SRO_SST_CHECK_MC_BLK;
/* Send command to check Memory Configuration block */
evt_data.status = rw_t3t_check_mc_block(p_cb);
}
} else {
LOG(ERROR) << StringPrintf("Felica-Lite tag not detected");
evt_data.status = NFC_STATUS_FAILED;
}
/* If error, notify upper layer */
if (evt_data.status != NFC_STATUS_OK) {
rw_t3t_set_readonly_cplt(evt_data.status);
}
}
/*****************************************************************************
**
** Function rw_t3t_act_handle_sro_rsp
**
** Description Handle response for setting read only codes
**
** Returns Nothing
**
*****************************************************************************/
void rw_t3t_act_handle_sro_rsp(tRW_T3T_CB* p_cb, NFC_HDR* p_msg_rsp) {
uint8_t* p_t3t_rsp = (uint8_t*)(p_msg_rsp + 1) + p_msg_rsp->offset;
uint8_t* p_mc;
tRW_DATA evt_data;
evt_data.status = NFC_STATUS_OK;
if (p_cb->rw_substate == RW_T3T_SRO_SST_UPDATE_NDEF_ATTRIB) {
/* Validate response opcode */
if ((p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE] != T3T_MSG_OPC_UPDATE_RSP) ||
(p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1] != T3T_MSG_RSP_STATUS_OK))
{
LOG(ERROR) << StringPrintf("Response error: rsp_code=%02X, status=%02X",
p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE],
p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1]);
evt_data.status = NFC_STATUS_FAILED;
} else {
p_cb->ndef_attrib.rwflag = T3T_MSG_NDEF_RWFLAG_RO;
if (p_cb->cur_cmd == RW_T3T_CMD_SET_READ_ONLY_HARD) {
p_cb->rw_substate = RW_T3T_SRO_SST_CHECK_MC_BLK;
/* Send command to check Memory Configuration block */
evt_data.status = rw_t3t_check_mc_block(p_cb);
} else {
rw_t3t_set_readonly_cplt(evt_data.status);
}
}
} else if (p_cb->rw_substate == RW_T3T_SRO_SST_CHECK_MC_BLK) {
/* Check tags's response for reading MemoryControl block, Validate response
* opcode */
if (p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE] != T3T_MSG_OPC_CHECK_RSP) {
LOG(ERROR) << StringPrintf(
"Response error: expecting rsp_code %02X, but got %02X",
T3T_MSG_OPC_CHECK_RSP, p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE]);
evt_data.status = NFC_STATUS_FAILED;
}
/* Validate status code and NFCID2 response from tag */
else if ((p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1] !=
T3T_MSG_RSP_STATUS_OK) /* verify response status code */
|| (memcmp(p_cb->peer_nfcid2, &p_t3t_rsp[T3T_MSG_RSP_OFFSET_IDM],
NCI_NFCID2_LEN) != 0)) /* verify response IDm */
{
evt_data.status = NFC_STATUS_FAILED;
} else if (p_msg_rsp->len <
(T3T_MSG_RSP_OFFSET_CHECK_DATA + T3T_MSG_BLOCKSIZE)) {
evt_data.status = NFC_STATUS_FAILED;
android_errorWriteLog(0x534e4554, "120506143");
} else {
/* Check if memory configuration (MC) block to see if SYS_OP=1 (NDEF
* enabled) */
p_mc = &p_t3t_rsp[T3T_MSG_RSP_OFFSET_CHECK_DATA]; /* Point to MC data of
CHECK response */
evt_data.status = NFC_STATUS_FAILED;
if (p_mc[T3T_MSG_FELICALITE_MC_OFFSET_SYS_OP] == 0x01) {
/* Set MC_SP field with MC[0] = 0x00 & MC[1] = 0xC0 (Hardlock) to change
* access permission from RW to RO */
p_mc[T3T_MSG_FELICALITE_MC_OFFSET_MC_SP] = 0x00;
/* Not changing the access permission of Subtraction Register and
* MC[0:1] */
p_mc[T3T_MSG_FELICALITE_MC_OFFSET_MC_SP + 1] = 0xC0;
/* Set RF_PRM field to 0x07 (procedure of issuance) */
p_mc[T3T_MSG_FELICALITE_MC_OFFSET_RF_PRM] = 0x07;
/* Construct and send UPDATE message to write MC block */
p_cb->rw_substate = RW_T3T_SRO_SST_UPDATE_MC_BLK;
evt_data.status =
rw_t3t_update_block(p_cb, T3T_MSG_FELICALITE_BLOCK_ID_MC, p_mc);
}
}
} else if (p_cb->rw_substate == RW_T3T_SRO_SST_UPDATE_MC_BLK) {
/* Validate response opcode */
if ((p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE] != T3T_MSG_OPC_UPDATE_RSP) ||
(p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1] != T3T_MSG_RSP_STATUS_OK))
{
LOG(ERROR) << StringPrintf("Response error: rsp_code=%02X, status=%02X",
p_t3t_rsp[T3T_MSG_RSP_OFFSET_RSPCODE],
p_t3t_rsp[T3T_MSG_RSP_OFFSET_STATUS1]);
evt_data.status = NFC_STATUS_FAILED;
} else {
rw_t3t_set_readonly_cplt(evt_data.status);
}
}
/* If error, notify upper layer */
if (evt_data.status != NFC_STATUS_OK) {
rw_t3t_set_readonly_cplt(evt_data.status);
}
GKI_freebuf(p_msg_rsp);
}
/*******************************************************************************
**
** Function rw_t3t_data_cback
**
** Description This callback function receives the data from NFCC.
**
** Returns none
**
*******************************************************************************/
void rw_t3t_data_cback(__attribute__((unused)) uint8_t conn_id,
tNFC_DATA_CEVT* p_data) {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
NFC_HDR* p_msg = p_data->p_data;
bool free_msg = false; /* if TRUE, free msg buffer before returning */
uint8_t *p, sod;
/* Stop rsponse timer */
nfc_stop_quick_timer(&p_cb->timer);
#if (RW_STATS_INCLUDED == TRUE)
/* Update rx stats */
rw_main_update_rx_stats(p_msg->len);
#endif /* RW_STATS_INCLUDED */
/* Check if we are expecting a response */
if (p_cb->rw_state != RW_T3T_STATE_COMMAND_PENDING) {
/*
** This must be raw frame response
** send raw frame to app with SoD
*/
rw_t3t_act_handle_raw_senddata_rsp(p_cb, p_data);
}
/* Sanity check: verify msg len is big enough to contain t3t header */
else if (p_msg->len < T3T_MSG_RSP_COMMON_HDR_LEN) {
LOG(ERROR) << StringPrintf(
"T3T: invalid Type3 Tag Message (invalid len: %i)", p_msg->len);
free_msg = true;
rw_t3t_process_frame_error();
} else {
/* Check for RF frame error */
p = (uint8_t*)(p_msg + 1) + p_msg->offset;
sod = p[0];
if (p_msg->len < sod || p[sod] != NCI_STATUS_OK) {
LOG(ERROR) << "T3T: rf frame error";
GKI_freebuf(p_msg);
rw_t3t_process_frame_error();
return;
}
/* Skip over SoD */
p_msg->offset++;
p_msg->len--;
/* Get response code */
switch (p_cb->cur_cmd) {
case RW_T3T_CMD_DETECT_NDEF:
rw_t3t_act_handle_ndef_detect_rsp(p_cb, p_msg);
break;
case RW_T3T_CMD_CHECK_NDEF:
rw_t3t_act_handle_check_ndef_rsp(p_cb, p_msg);
break;
case RW_T3T_CMD_UPDATE_NDEF:
rw_t3t_act_handle_update_ndef_rsp(p_cb, p_msg);
break;
case RW_T3T_CMD_CHECK:
rw_t3t_act_handle_check_rsp(p_cb, p_msg);
break;
case RW_T3T_CMD_UPDATE:
rw_t3t_act_handle_update_rsp(p_cb, p_msg);
break;
case RW_T3T_CMD_SEND_RAW_FRAME:
rw_t3t_act_handle_raw_senddata_rsp(p_cb, p_data);
break;
case RW_T3T_CMD_FORMAT:
rw_t3t_act_handle_fmt_rsp(p_cb, p_msg);
break;
case RW_T3T_CMD_SET_READ_ONLY_SOFT:
case RW_T3T_CMD_SET_READ_ONLY_HARD:
rw_t3t_act_handle_sro_rsp(p_cb, p_msg);
break;
default:
GKI_freebuf(p_msg);
break;
}
}
if (free_msg) {
GKI_freebuf(p_msg);
}
}
/*******************************************************************************
**
** Function rw_t3t_conn_cback
**
** Description This callback function receives the events/data from NFCC.
**
** Returns none
**
*******************************************************************************/
void rw_t3t_conn_cback(uint8_t conn_id, tNFC_CONN_EVT event,
tNFC_CONN* p_data) {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"rw_t3t_conn_cback: conn_id=%i, evt=0x%02x", conn_id, event);
/* Only handle NFC_RF_CONN_ID conn_id */
if (conn_id != NFC_RF_CONN_ID) {
return;
}
switch (event) {
case NFC_DEACTIVATE_CEVT:
rw_t3t_unselect();
break;
case NFC_DATA_CEVT: /* check for status in tNFC_CONN */
if ((p_data != nullptr) && ((p_data->data.status == NFC_STATUS_OK) ||
(p_data->data.status == NFC_STATUS_CONTINUE))) {
rw_t3t_data_cback(conn_id, &(p_data->data));
break;
} else if (p_data->data.p_data != nullptr) {
/* Free the response buffer in case of error response */
GKI_freebuf((NFC_HDR*)(p_data->data.p_data));
p_data->data.p_data = nullptr;
}
/* Data event with error status...fall through to NFC_ERROR_CEVT case */
FALLTHROUGH_INTENDED;
case NFC_ERROR_CEVT:
nfc_stop_quick_timer(&p_cb->timer);
#if (RW_STATS_INCLUDED == TRUE)
rw_main_update_trans_error_stats();
#endif /* RW_STATS_INCLUDED */
if (event == NFC_ERROR_CEVT)
rw_t3t_process_error(NFC_STATUS_TIMEOUT);
else if (p_data)
rw_t3t_process_error(p_data->status);
break;
default:
break;
}
}
/*******************************************************************************
**
** Function rw_t3t_mrti_to_a_b
**
** Description Converts the given MRTI (Maximum Response Time Information)
** to the base to calculate timeout value.
** (The timeout value is a + b * number_blocks)
**
** Returns NFC_STATUS_OK
**
*******************************************************************************/
static void rw_t3t_mrti_to_a_b(uint8_t mrti, uint32_t* p_a, uint32_t* p_b) {
uint8_t a, b, e;
a = (mrti & 0x7) + 1; /* A is bit 0 ~ bit 2 */
mrti >>= 3;
b = (mrti & 0x7) + 1; /* B is bit 3 ~ bit 5 */
mrti >>= 3;
e = mrti & 0x3; /* E is bit 6 ~ bit 7 */
*p_a = rw_t3t_mrti_base[e] * a; /* (A+1) * base (i.e T/t3t * 4^E) */
*p_b = rw_t3t_mrti_base[e] * b; /* (B+1) * base (i.e T/t3t * 4^E) */
}
/*******************************************************************************
**
** Function rw_t3t_select
**
** Description Called by NFC manager when a Type3 tag has been activated
**
** Returns NFC_STATUS_OK
**
*******************************************************************************/
tNFC_STATUS rw_t3t_select(uint8_t peer_nfcid2[NCI_RF_F_UID_LEN],
uint8_t mrti_check, uint8_t mrti_update) {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
DLOG_IF(INFO, nfc_debug_enabled) << __func__;
memcpy(p_cb->peer_nfcid2, peer_nfcid2,
NCI_NFCID2_LEN); /* Store tag's NFCID2 */
p_cb->ndef_attrib.status =
NFC_STATUS_NOT_INITIALIZED; /* Indicate that NDEF detection has not been
performed yet */
p_cb->rw_state = RW_T3T_STATE_IDLE;
p_cb->flags = 0;
rw_t3t_mrti_to_a_b(mrti_check, &p_cb->check_tout_a, &p_cb->check_tout_b);
rw_t3t_mrti_to_a_b(mrti_update, &p_cb->update_tout_a, &p_cb->update_tout_b);
/* Alloc cmd buf for retransmissions */
if (p_cb->p_cur_cmd_buf == nullptr) {
p_cb->p_cur_cmd_buf = (NFC_HDR*)GKI_getpoolbuf(NFC_RW_POOL_ID);
if (p_cb->p_cur_cmd_buf == nullptr) {
LOG(ERROR) << StringPrintf(
"rw_t3t_select: unable to allocate buffer for retransmission");
p_cb->rw_state = RW_T3T_STATE_NOT_ACTIVATED;
return (NFC_STATUS_FAILED);
}
}
NFC_SetStaticRfCback(rw_t3t_conn_cback);
return NFC_STATUS_OK;
}
/*******************************************************************************
**
** Function rw_t3t_unselect
**
** Description Called by NFC manager when a Type3 tag has been de-activated
**
** Returns NFC_STATUS_OK
**
*******************************************************************************/
static tNFC_STATUS rw_t3t_unselect() {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
#if (RW_STATS_INCLUDED == TRUE)
/* Display stats */
rw_main_log_stats();
#endif /* RW_STATS_INCLUDED */
/* Stop t3t timer (if started) */
nfc_stop_quick_timer(&p_cb->timer);
/* Free cmd buf for retransmissions */
if (p_cb->p_cur_cmd_buf) {
GKI_freebuf(p_cb->p_cur_cmd_buf);
p_cb->p_cur_cmd_buf = nullptr;
}
p_cb->rw_state = RW_T3T_STATE_NOT_ACTIVATED;
NFC_SetStaticRfCback(nullptr);
return NFC_STATUS_OK;
}
/*******************************************************************************
**
** Function rw_t3t_update_ndef_flag
**
** Description set additional NDEF Flags for felica lite tag
**
** Returns updated NDEF Flag value
**
*******************************************************************************/
static void rw_t3t_update_ndef_flag(uint8_t* p_flag) {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
uint8_t xx;
for (xx = 0; xx < p_cb->num_system_codes; xx++) {
if (p_cb->system_codes[xx] == T3T_SYSTEM_CODE_FELICA_LITE) {
*p_flag &= ~RW_NDEF_FL_UNKNOWN;
*p_flag |= (RW_NDEF_FL_SUPPORTED | RW_NDEF_FL_FORMATABLE);
break;
}
}
}
/*******************************************************************************
**
** Function rw_t3t_cmd_str
**
** Description Converts cmd_id to command string for logging
**
** Returns command string
**
*******************************************************************************/
static std::string rw_t3t_cmd_str(uint8_t cmd_id) {
switch (cmd_id) {
case RW_T3T_CMD_DETECT_NDEF:
return "RW_T3T_CMD_DETECT_NDEF";
case RW_T3T_CMD_CHECK_NDEF:
return "RW_T3T_CMD_CHECK_NDEF";
case RW_T3T_CMD_UPDATE_NDEF:
return "RW_T3T_CMD_UPDATE_NDEF";
case RW_T3T_CMD_CHECK:
return "RW_T3T_CMD_CHECK";
case RW_T3T_CMD_UPDATE:
return "RW_T3T_CMD_UPDATE";
case RW_T3T_CMD_SEND_RAW_FRAME:
return "RW_T3T_CMD_SEND_RAW_FRAME";
case RW_T3T_CMD_GET_SYSTEM_CODES:
return "RW_T3T_CMD_GET_SYSTEM_CODES";
default:
return "Unknown";
}
}
/*******************************************************************************
**
** Function rw_t3t_state_str
**
** Description Converts state_id to command string for logging
**
** Returns command string
**
*******************************************************************************/
static std::string rw_t3t_state_str(uint8_t state_id) {
switch (state_id) {
case RW_T3T_STATE_NOT_ACTIVATED:
return "RW_T3T_STATE_NOT_ACTIVATED";
case RW_T3T_STATE_IDLE:
return "RW_T3T_STATE_IDLE";
case RW_T3T_STATE_COMMAND_PENDING:
return "RW_T3T_STATE_COMMAND_PENDING";
default:
return "Unknown";
}
}
/*****************************************************************************
** Type3 Tag API Functions
*****************************************************************************/
/*****************************************************************************
**
** Function RW_T3tDetectNDef
**
** Description
** This function is used to perform NDEF detection on a Type 3 tag, and
** retrieve the tag's NDEF attribute information (block 0).
**
** Before using this API, the application must call RW_SelectTagType to
** indicate that a Type 3 tag has been activated, and to provide the
** tag's Manufacture ID (IDm) .
**
** Returns
** NFC_STATUS_OK: ndef detection procedure started
** NFC_STATUS_NO_BUFFERS: unable to allocate a buffer for this operation
** NFC_STATUS_FAILED: other error
**
*****************************************************************************/
tNFC_STATUS RW_T3tDetectNDef(void) {
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
tNFC_STATUS retval = NFC_STATUS_OK;
DLOG_IF(INFO, nfc_debug_enabled) << __func__;
/* Check if we are in valid state to handle this API */
if (p_cb->rw_state != RW_T3T_STATE_IDLE) {
LOG(ERROR) << StringPrintf("Error: invalid state to handle API (0x%x)",
p_cb->rw_state);
return (NFC_STATUS_FAILED);
}
retval = (tNFC_STATUS)nci_snd_t3t_polling(T3T_SYSTEM_CODE_NDEF, 0, 0);
if (retval == NCI_STATUS_OK) {
p_cb->cur_cmd = RW_T3T_CMD_DETECT_NDEF;
p_cb->cur_tout = RW_T3T_DEFAULT_CMD_TIMEOUT_TICKS;
p_cb->cur_poll_rc = 0;
p_cb->rw_state = RW_T3T_STATE_COMMAND_PENDING;
p_cb->flags |= RW_T3T_FL_W4_NDEF_DETECT_POLL_RSP;
/* start timer for waiting for responses */
rw_t3t_start_poll_timer(p_cb);
}
return (retval);
}
/*****************************************************************************
**
** Function RW_T3tCheckNDef
**
** Description
** Retrieve NDEF contents from a Type3 tag.
**
** The RW_T3T_CHECK_EVT event is used to notify the application for each
** segment of NDEF data received. The RW_T3T_CHECK_CPLT_EVT event is used
** to notify the application all segments have been received.
**
** Before using this API, the RW_T3tDetectNDef function must be called to
** verify that the tag contains NDEF data, and to retrieve the NDEF
** attributes.
**
** Internally, this command will be separated into multiple Tag 3 Check
** commands (if necessary) - depending on the tag's Nbr (max number of
** blocks per read) attribute.
**
** Returns
** NFC_STATUS_OK: check command started
** NFC_STATUS_NO_BUFFERS: unable to allocate a buffer for this operation
** NFC_STATUS_FAILED: other error
**
*****************************************************************************/
tNFC_STATUS RW_T3tCheckNDef(void) {
tNFC_STATUS retval = NFC_STATUS_OK;
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
DLOG_IF(INFO, nfc_debug_enabled) << __func__;
/* Check if we are in valid state to handle this API */
if (p_cb->rw_state != RW_T3T_STATE_IDLE) {
LOG(ERROR) << StringPrintf("Error: invalid state to handle API (0x%x)",
p_cb->rw_state);
return (NFC_STATUS_FAILED);
} else if (p_cb->ndef_attrib.status !=
NFC_STATUS_OK) /* NDEF detection not performed yet? */
{
LOG(ERROR) << StringPrintf("Error: NDEF detection not performed yet");
return (NFC_STATUS_NOT_INITIALIZED);
} else if (p_cb->ndef_attrib.ln == 0) {
LOG(ERROR) << StringPrintf("Type 3 tag contains empty NDEF message");
return (NFC_STATUS_FAILED);
}
/* Check number of blocks needed for this update */
p_cb->flags &= ~RW_T3T_FL_IS_FINAL_NDEF_SEGMENT;
p_cb->ndef_rx_offset = 0;
retval = rw_t3t_send_next_ndef_check_cmd(p_cb);
return (retval);
}
/*****************************************************************************
**
** Function RW_T3tUpdateNDef
**
** Description
** Write NDEF contents to a Type3 tag.
**
** The RW_T3T_UPDATE_CPLT_EVT callback event will be used to notify the
** application of the response.
**
** Before using this API, the RW_T3tDetectNDef function must be called to
** verify that the tag contains NDEF data, and to retrieve the NDEF
** attributes.
**
** Internally, this command will be separated into multiple Tag 3 Update
** commands (if necessary) - depending on the tag's Nbw (max number of
** blocks per write) attribute.
**
** Returns
** NFC_STATUS_OK: check command started
** NFC_STATUS_NO_BUFFERS: unable to allocate a buffer for this operation
** NFC_STATUS_REFUSED: tag is read-only
** NFC_STATUS_BUFFER_FULL: len exceeds tag's maximum size
** NFC_STATUS_FAILED: other error
**
*****************************************************************************/
tNFC_STATUS RW_T3tUpdateNDef(uint32_t len, uint8_t* p_data) {
tNFC_STATUS retval = NFC_STATUS_OK;
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("RW_T3tUpdateNDef (len=%i)", len);
/* Check if we are in valid state to handle this API */
if (p_cb->rw_state != RW_T3T_STATE_IDLE) {
LOG(ERROR) << StringPrintf("Error: invalid state to handle API (0x%x)",
p_cb->rw_state);
return (NFC_STATUS_FAILED);
} else if (p_cb->ndef_attrib.status !=
NFC_STATUS_OK) /* NDEF detection not performed yet? */
{
LOG(ERROR) << StringPrintf("Error: NDEF detection not performed yet");
return (NFC_STATUS_NOT_INITIALIZED);
} else if (len > (((uint32_t)p_cb->ndef_attrib.nmaxb) *
16)) /* Len exceed's tag's NDEF memory? */
{
return (NFC_STATUS_BUFFER_FULL);
} else if (p_cb->ndef_attrib.rwflag ==
T3T_MSG_NDEF_RWFLAG_RO) /* Tag's NDEF memory is read-only? */
{
return (NFC_STATUS_REFUSED);
}
/* Check number of blocks needed for this update */
p_cb->flags &= ~RW_T3T_FL_IS_FINAL_NDEF_SEGMENT;
p_cb->ndef_msg_bytes_sent = 0;
p_cb->ndef_msg_len = len;
p_cb->ndef_msg = p_data;
/* Send initial UPDATE command for NDEF Attribute Info */
retval = rw_t3t_send_update_ndef_attribute_cmd(p_cb, true);
return (retval);
}
/*****************************************************************************
**
** Function RW_T3tCheck
**
** Description
** Read (non-NDEF) contents from a Type3 tag.
**
** The RW_READ_EVT event is used to notify the application for each
** segment of NDEF data received. The RW_READ_CPLT_EVT event is used to
** notify the application all segments have been received.
**
** Before using this API, the application must call RW_SelectTagType to
** indicate that a Type 3 tag has been activated, and to provide the
** tag's Manufacture ID (IDm) .
**
** Returns
** NFC_STATUS_OK: check command started
** NFC_STATUS_NO_BUFFERS: unable to allocate a buffer for this operation
** NFC_STATUS_FAILED: other error
**
*****************************************************************************/
tNFC_STATUS RW_T3tCheck(uint8_t num_blocks, tT3T_BLOCK_DESC* t3t_blocks) {
tNFC_STATUS retval = NFC_STATUS_OK;
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("RW_T3tCheck (num_blocks = %i)", num_blocks);
/* Check if we are in valid state to handle this API */
if (p_cb->rw_state != RW_T3T_STATE_IDLE) {
LOG(ERROR) << StringPrintf("Error: invalid state to handle API (0x%x)",
p_cb->rw_state);
return (NFC_STATUS_FAILED);
}
/* Send the CHECK command */
retval = rw_t3t_send_check_cmd(p_cb, num_blocks, t3t_blocks);
return (retval);
}
/*****************************************************************************
**
** Function RW_T3tUpdate
**
** Description
** Write (non-NDEF) contents to a Type3 tag.
**
** The RW_WRITE_CPLT_EVT event is used to notify the application all
** segments have been received.
**
** Before using this API, the application must call RW_SelectTagType to
** indicate that a Type 3 tag has been activated, and to provide the tag's
** Manufacture ID (IDm) .
**
** Returns
** NFC_STATUS_OK: check command started
** NFC_STATUS_NO_BUFFERS: unable to allocate a buffer for this operation
** NFC_STATUS_FAILED: other error
**
*****************************************************************************/
tNFC_STATUS RW_T3tUpdate(uint8_t num_blocks, tT3T_BLOCK_DESC* t3t_blocks,
uint8_t* p_data) {
tNFC_STATUS retval = NFC_STATUS_OK;
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("RW_T3tUpdate (num_blocks = %i)", num_blocks);
/* Check if we are in valid state to handle this API */
if (p_cb->rw_state != RW_T3T_STATE_IDLE) {
LOG(ERROR) << StringPrintf("Error: invalid state to handle API (0x%x)",
p_cb->rw_state);
return (NFC_STATUS_FAILED);
}
/* Send the UPDATE command */
retval = rw_t3t_send_update_cmd(p_cb, num_blocks, t3t_blocks, p_data);
return (retval);
}
/*****************************************************************************
**
** Function RW_T3tPresenceCheck
**
** Description
** Check if the tag is still in the field.
**
** The RW_T3T_PRESENCE_CHECK_EVT w/ status is used to indicate presence
** or non-presence.
**
** Returns
** NFC_STATUS_OK, if raw data frame sent
** NFC_STATUS_NO_BUFFERS: unable to allocate a buffer for this operation
** NFC_STATUS_FAILED: other error
**
*****************************************************************************/
tNFC_STATUS RW_T3tPresenceCheck(void) {
tNFC_STATUS retval = NFC_STATUS_OK;
tRW_DATA evt_data;
tRW_CB* p_rw_cb = &rw_cb;
DLOG_IF(INFO, nfc_debug_enabled) << __func__;
/* If RW_SelectTagType was not called (no conn_callback) return failure */
if (!(p_rw_cb->p_cback)) {
retval = NFC_STATUS_FAILED;
}
/* If we are not activated, then RW_T3T_PRESENCE_CHECK_EVT status=FAIL */
else if (p_rw_cb->tcb.t3t.rw_state == RW_T3T_STATE_NOT_ACTIVATED) {
evt_data.status = NFC_STATUS_FAILED;
(*p_rw_cb->p_cback)(RW_T3T_PRESENCE_CHECK_EVT, &evt_data);
}
/* If command is pending */
else if (p_rw_cb->tcb.t3t.rw_state == RW_T3T_STATE_COMMAND_PENDING) {
/* If already performing presence check, return error */
if (p_rw_cb->tcb.t3t.flags & RW_T3T_FL_W4_PRESENCE_CHECK_POLL_RSP) {
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("RW_T3tPresenceCheck already in progress");
retval = NFC_STATUS_FAILED;
}
/* If busy with any other command, assume that the tag is present */
else {
evt_data.status = NFC_STATUS_OK;
(*p_rw_cb->p_cback)(RW_T3T_PRESENCE_CHECK_EVT, &evt_data);
}
} else {
/* IDLE state: send POLL command */
retval = (tNFC_STATUS)nci_snd_t3t_polling(0xFFFF, T3T_POLL_RC_SC, 0);
if (retval == NCI_STATUS_OK) {
p_rw_cb->tcb.t3t.flags |= RW_T3T_FL_W4_PRESENCE_CHECK_POLL_RSP;
p_rw_cb->tcb.t3t.rw_state = RW_T3T_STATE_COMMAND_PENDING;
p_rw_cb->tcb.t3t.cur_poll_rc = 0;
/* start timer for waiting for responses */
rw_t3t_start_poll_timer(&p_rw_cb->tcb.t3t);
} else {
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"RW_T3tPresenceCheck error sending NCI_RF_T3T_POLLING cmd (status = "
"0x%0x)",
retval);
}
}
return (retval);
}
/*****************************************************************************
**
** Function RW_T3tPoll
**
** Description
** Send POLL command
**
** Returns
** NFC_STATUS_OK, if raw data frame sent
** NFC_STATUS_NO_BUFFERS: unable to allocate a buffer for this operation
** NFC_STATUS_FAILED: other error
**
*****************************************************************************/
tNFC_STATUS RW_T3tPoll(uint16_t system_code, tT3T_POLL_RC rc, uint8_t tsn) {
tNFC_STATUS retval = NFC_STATUS_OK;
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
DLOG_IF(INFO, nfc_debug_enabled) << __func__;
/* Check if we are in valid state to handle this API */
if (p_cb->rw_state != RW_T3T_STATE_IDLE) {
LOG(ERROR) << StringPrintf("Error: invalid state to handle API (0x%x)",
p_cb->rw_state);
return (NFC_STATUS_FAILED);
}
retval = (tNFC_STATUS)nci_snd_t3t_polling(system_code, (uint8_t)rc, tsn);
if (retval == NCI_STATUS_OK) {
/* start timer for waiting for responses */
p_cb->cur_poll_rc = rc;
p_cb->rw_state = RW_T3T_STATE_COMMAND_PENDING;
rw_t3t_start_poll_timer(p_cb);
}
return (retval);
}
/*****************************************************************************
**
** Function RW_T3tSendRawFrame
**
** Description
** This function is called to send a raw data frame to the peer device.
** When type 3 tag receives response from peer, the callback function
** will be called with a RW_T3T_RAW_FRAME_EVT [Table 6].
**
** Before using this API, the application must call RW_SelectTagType to
** indicate that a Type 3 tag has been activated.
**
** The raw frame should be a properly formatted Type 3 tag message.
**
** Returns
** NFC_STATUS_OK, if raw data frame sent
** NFC_STATUS_NO_BUFFERS: unable to allocate a buffer for this operation
** NFC_STATUS_FAILED: other error
**
*****************************************************************************/
tNFC_STATUS RW_T3tSendRawFrame(uint16_t len, uint8_t* p_data) {
tNFC_STATUS retval = NFC_STATUS_OK;
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("RW_T3tSendRawFrame (len = %i)", len);
/* Check if we are in valid state to handle this API */
if (p_cb->rw_state != RW_T3T_STATE_IDLE) {
LOG(ERROR) << StringPrintf("Error: invalid state to handle API (0x%x)",
p_cb->rw_state);
return (NFC_STATUS_FAILED);
}
/* Send the UPDATE command */
retval = rw_t3t_send_raw_frame(p_cb, len, p_data);
return (retval);
}
/*****************************************************************************
**
** Function RW_T3tGetSystemCodes
**
** Description
** Get systems codes supported by the activated tag:
** Poll for wildcard (FFFF, RC=1):
**
** Before using this API, the application must call RW_SelectTagType to
** indicate that a Type 3 tag has been activated.
**
** Returns
** NFC_STATUS_OK, if raw data frame sent
** NFC_STATUS_NO_BUFFERS: unable to allocate a buffer for this operation
** NFC_STATUS_FAILED: other error
**
*****************************************************************************/
tNFC_STATUS RW_T3tGetSystemCodes(void) {
tNFC_STATUS retval = NFC_STATUS_OK;
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
DLOG_IF(INFO, nfc_debug_enabled) << __func__;
/* Check if we are in valid state to handle this API */
if (p_cb->rw_state != RW_T3T_STATE_IDLE) {
LOG(ERROR) << StringPrintf("Error: invalid state to handle API (0x%x)",
p_cb->rw_state);
return (NFC_STATUS_FAILED);
} else {
retval = (tNFC_STATUS)nci_snd_t3t_polling(0xFFFF, T3T_POLL_RC_SC, 0);
if (retval == NCI_STATUS_OK) {
p_cb->cur_cmd = RW_T3T_CMD_GET_SYSTEM_CODES;
p_cb->cur_tout = RW_T3T_DEFAULT_CMD_TIMEOUT_TICKS;
p_cb->cur_poll_rc = T3T_POLL_RC_SC;
p_cb->rw_state = RW_T3T_STATE_COMMAND_PENDING;
p_cb->flags |= RW_T3T_FL_W4_GET_SC_POLL_RSP;
p_cb->num_system_codes = 0;
/* start timer for waiting for responses */
rw_t3t_start_poll_timer(p_cb);
}
}
return (retval);
}
/*****************************************************************************
**
** Function RW_T3tFormatNDef
**
** Description
** Format a type-3 tag for NDEF.
**
** Only Felica-Lite tags are supported by this API. The
** RW_T3T_FORMAT_CPLT_EVT is used to notify the status of the operation.
**
** Returns
** NFC_STATUS_OK: ndef detection procedure started
** NFC_STATUS_NO_BUFFERS: unable to allocate a buffer for this operation
** NFC_STATUS_FAILED: other error
**
*****************************************************************************/
tNFC_STATUS RW_T3tFormatNDef(void) {
tNFC_STATUS retval = NFC_STATUS_OK;
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
DLOG_IF(INFO, nfc_debug_enabled) << __func__;
/* Check if we are in valid state to handle this API */
if (p_cb->rw_state != RW_T3T_STATE_IDLE) {
LOG(ERROR) << StringPrintf("Error: invalid state to handle API (0x%x)",
p_cb->rw_state);
return (NFC_STATUS_FAILED);
} else {
/* Poll tag, to see if Felica-Lite system is supported */
retval = (tNFC_STATUS)nci_snd_t3t_polling(T3T_SYSTEM_CODE_FELICA_LITE,
T3T_POLL_RC_SC, 0);
if (retval == NCI_STATUS_OK) {
p_cb->cur_cmd = RW_T3T_CMD_FORMAT;
p_cb->cur_tout = RW_T3T_DEFAULT_CMD_TIMEOUT_TICKS;
p_cb->cur_poll_rc = T3T_POLL_RC_SC;
p_cb->rw_state = RW_T3T_STATE_COMMAND_PENDING;
p_cb->rw_substate = RW_T3T_FMT_SST_POLL_FELICA_LITE;
p_cb->flags |= RW_T3T_FL_W4_FMT_FELICA_LITE_POLL_RSP;
/* start timer for waiting for responses */
rw_t3t_start_poll_timer(p_cb);
}
}
return (retval);
}
/*****************************************************************************
**
** Function RW_T3tSetReadOnly
**
** Description This function performs NDEF read-only procedure
** Note: Only Felica-Lite tags are supported by this API.
** RW_T3tDetectNDef() must be called before using this
**
** The RW_T3T_SET_READ_ONLY_CPLT_EVT event will be returned.
**
** Returns NFC_STATUS_OK if success
** NFC_STATUS_FAILED if T3T is busy or other error
**
*****************************************************************************/
tNFC_STATUS RW_T3tSetReadOnly(bool b_hard_lock) {
tNFC_STATUS retval = NFC_STATUS_OK;
tRW_T3T_CB* p_cb = &rw_cb.tcb.t3t;
tRW_DATA evt_data;
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("b_hard_lock=%d", b_hard_lock);
/* Check if we are in valid state to handle this API */
if (p_cb->rw_state != RW_T3T_STATE_IDLE) {
LOG(ERROR) << StringPrintf("Error: invalid state to handle API (0x%x)",
p_cb->rw_state);
return (NFC_STATUS_FAILED);
}
if (p_cb->ndef_attrib.status !=
NFC_STATUS_OK) /* NDEF detection not performed yet? */
{
LOG(ERROR) << StringPrintf("Error: NDEF detection not performed yet");
return (NFC_STATUS_NOT_INITIALIZED);
}
if ((!b_hard_lock) &&
(p_cb->ndef_attrib.rwflag ==
T3T_MSG_NDEF_RWFLAG_RO)) /* Tag's NDEF memory is read-only already */
{
evt_data.status = NFC_STATUS_OK;
(*(rw_cb.p_cback))(RW_T3T_SET_READ_ONLY_CPLT_EVT, &evt_data);
return (retval);
} else {
/* Poll tag, to see if Felica-Lite system is supported */
retval = (tNFC_STATUS)nci_snd_t3t_polling(T3T_SYSTEM_CODE_FELICA_LITE,
T3T_POLL_RC_SC, 0);
if (retval == NCI_STATUS_OK) {
if (b_hard_lock)
p_cb->cur_cmd = RW_T3T_CMD_SET_READ_ONLY_HARD;
else
p_cb->cur_cmd = RW_T3T_CMD_SET_READ_ONLY_SOFT;
p_cb->cur_tout = RW_T3T_DEFAULT_CMD_TIMEOUT_TICKS;
p_cb->cur_poll_rc = T3T_POLL_RC_SC;
p_cb->rw_state = RW_T3T_STATE_COMMAND_PENDING;
p_cb->rw_substate = RW_T3T_SRO_SST_POLL_FELICA_LITE;
p_cb->flags |= RW_T3T_FL_W4_SRO_FELICA_LITE_POLL_RSP;
/* start timer for waiting for responses */
rw_t3t_start_poll_timer(p_cb);
}
}
return (retval);
}