1 /******************************************************************************
2 *
3 * Copyright (C) 2009-2014 Broadcom Corporation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 ******************************************************************************/
18
19 /******************************************************************************
20 *
21 * This file contains functions that interface with the NFC NCI transport.
22 * On the receive side, it routes events to the appropriate handler
23 * (callback). On the transmit side, it manages the command transmission.
24 *
25 ******************************************************************************/
26 #include <string.h>
27
28 #include <android-base/stringprintf.h>
29 #include <base/logging.h>
30
31 #include "nfc_target.h"
32
33 #include "bt_types.h"
34 #include "ce_api.h"
35 #include "ce_int.h"
36
37 using android::base::StringPrintf;
38
39 extern bool nfc_debug_enabled;
40
41 tCE_CB ce_cb;
42
43 /*******************************************************************************
44 *******************************************************************************/
ce_init(void)45 void ce_init(void) {
46 memset(&ce_cb, 0, sizeof(tCE_CB));
47
48 /* Initialize tag-specific fields of ce control block */
49 ce_t3t_init();
50 }
51
52 /*******************************************************************************
53 **
54 ** Function CE_SendRawFrame
55 **
56 ** Description This function sends a raw frame to the peer device.
57 **
58 ** Returns tNFC_STATUS
59 **
60 *******************************************************************************/
CE_SendRawFrame(uint8_t * p_raw_data,uint16_t data_len)61 tNFC_STATUS CE_SendRawFrame(uint8_t* p_raw_data, uint16_t data_len) {
62 tNFC_STATUS status = NFC_STATUS_FAILED;
63 NFC_HDR* p_data;
64 uint8_t* p;
65
66 if (ce_cb.p_cback) {
67 /* a valid opcode for RW */
68 p_data = (NFC_HDR*)GKI_getpoolbuf(NFC_RW_POOL_ID);
69 if (p_data) {
70 p_data->offset = NCI_MSG_OFFSET_SIZE + NCI_DATA_HDR_SIZE;
71 p = (uint8_t*)(p_data + 1) + p_data->offset;
72 memcpy(p, p_raw_data, data_len);
73 p_data->len = data_len;
74 DLOG_IF(INFO, nfc_debug_enabled)
75 << StringPrintf("CE SENT raw frame (0x%x)", data_len);
76 status = NFC_SendData(NFC_RF_CONN_ID, p_data);
77 }
78 }
79 return status;
80 }
81
82 /*******************************************************************************
83 **
84 ** Function CE_SetActivatedTagType
85 **
86 ** Description This function selects the tag type for CE mode.
87 **
88 ** Returns tNFC_STATUS
89 **
90 *******************************************************************************/
CE_SetActivatedTagType(tNFC_ACTIVATE_DEVT * p_activate_params,uint16_t t3t_system_code,tCE_CBACK * p_cback)91 tNFC_STATUS CE_SetActivatedTagType(tNFC_ACTIVATE_DEVT* p_activate_params,
92 uint16_t t3t_system_code,
93 tCE_CBACK* p_cback) {
94 tNFC_STATUS status = NFC_STATUS_FAILED;
95 tNFC_PROTOCOL protocol = p_activate_params->protocol;
96
97 DLOG_IF(INFO, nfc_debug_enabled)
98 << StringPrintf("CE_SetActivatedTagType protocol:%d", protocol);
99
100 switch (protocol) {
101 case NFC_PROTOCOL_T1T:
102 case NFC_PROTOCOL_T2T:
103 return NFC_STATUS_FAILED;
104
105 case NFC_PROTOCOL_T3T: /* Type3Tag - NFC-F */
106 /* store callback function before NFC_SetStaticRfCback () */
107 ce_cb.p_cback = p_cback;
108 status = ce_select_t3t(t3t_system_code,
109 p_activate_params->rf_tech_param.param.lf.nfcid2);
110 break;
111
112 case NFC_PROTOCOL_ISO_DEP: /* ISODEP/4A,4B- NFC-A or NFC-B */
113 /* store callback function before NFC_SetStaticRfCback () */
114 ce_cb.p_cback = p_cback;
115 status = ce_select_t4t();
116 break;
117
118 default:
119 LOG(ERROR) << StringPrintf("CE_SetActivatedTagType Invalid protocol");
120 return NFC_STATUS_FAILED;
121 }
122
123 if (status != NFC_STATUS_OK) {
124 NFC_SetStaticRfCback(nullptr);
125 ce_cb.p_cback = nullptr;
126 }
127 return status;
128 }
129