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 #include "bt_types.h"
28 #include "nfc_target.h"
29
30 #include "ce_api.h"
31 #include "ce_int.h"
32 #include "gki.h"
33 #include "nci_hmsgs.h"
34 #include "nfc_api.h"
35
36 tCE_CB ce_cb;
37
38 /*******************************************************************************
39 *******************************************************************************/
ce_init(void)40 void ce_init(void) {
41 memset(&ce_cb, 0, sizeof(tCE_CB));
42 ce_cb.trace_level = NFC_INITIAL_TRACE_LEVEL;
43
44 /* Initialize tag-specific fields of ce control block */
45 ce_t3t_init();
46 }
47
48 /*******************************************************************************
49 **
50 ** Function CE_SendRawFrame
51 **
52 ** Description This function sends a raw frame to the peer device.
53 **
54 ** Returns tNFC_STATUS
55 **
56 *******************************************************************************/
CE_SendRawFrame(uint8_t * p_raw_data,uint16_t data_len)57 tNFC_STATUS CE_SendRawFrame(uint8_t* p_raw_data, uint16_t data_len) {
58 tNFC_STATUS status = NFC_STATUS_FAILED;
59 NFC_HDR* p_data;
60 uint8_t* p;
61
62 if (ce_cb.p_cback) {
63 /* a valid opcode for RW */
64 p_data = (NFC_HDR*)GKI_getpoolbuf(NFC_RW_POOL_ID);
65 if (p_data) {
66 p_data->offset = NCI_MSG_OFFSET_SIZE + NCI_DATA_HDR_SIZE;
67 p = (uint8_t*)(p_data + 1) + p_data->offset;
68 memcpy(p, p_raw_data, data_len);
69 p_data->len = data_len;
70 CE_TRACE_EVENT1("CE SENT raw frame (0x%x)", data_len);
71 status = NFC_SendData(NFC_RF_CONN_ID, p_data);
72 }
73 }
74 return status;
75 }
76
77 /*******************************************************************************
78 **
79 ** Function CE_SetActivatedTagType
80 **
81 ** Description This function selects the tag type for CE mode.
82 **
83 ** Returns tNFC_STATUS
84 **
85 *******************************************************************************/
CE_SetActivatedTagType(tNFC_ACTIVATE_DEVT * p_activate_params,uint16_t t3t_system_code,tCE_CBACK * p_cback)86 tNFC_STATUS CE_SetActivatedTagType(tNFC_ACTIVATE_DEVT* p_activate_params,
87 uint16_t t3t_system_code,
88 tCE_CBACK* p_cback) {
89 tNFC_STATUS status = NFC_STATUS_FAILED;
90 tNFC_PROTOCOL protocol = p_activate_params->protocol;
91
92 CE_TRACE_API1("CE_SetActivatedTagType protocol:%d", protocol);
93
94 switch (protocol) {
95 case NFC_PROTOCOL_T1T:
96 case NFC_PROTOCOL_T2T:
97 return NFC_STATUS_FAILED;
98
99 case NFC_PROTOCOL_T3T: /* Type3Tag - NFC-F */
100 /* store callback function before NFC_SetStaticRfCback () */
101 ce_cb.p_cback = p_cback;
102 status = ce_select_t3t(t3t_system_code,
103 p_activate_params->rf_tech_param.param.lf.nfcid2);
104 break;
105
106 case NFC_PROTOCOL_ISO_DEP: /* ISODEP/4A,4B- NFC-A or NFC-B */
107 /* store callback function before NFC_SetStaticRfCback () */
108 ce_cb.p_cback = p_cback;
109 status = ce_select_t4t();
110 break;
111
112 default:
113 CE_TRACE_ERROR0("CE_SetActivatedTagType Invalid protocol");
114 return NFC_STATUS_FAILED;
115 }
116
117 if (status != NFC_STATUS_OK) {
118 NFC_SetStaticRfCback(NULL);
119 ce_cb.p_cback = NULL;
120 }
121 return status;
122 }
123
124 /*******************************************************************************
125 **
126 ** Function CE_SetTraceLevel
127 **
128 ** Description This function sets the trace level for Card Emulation mode.
129 ** If called with a value of 0xFF,
130 ** it simply returns the current trace level.
131 **
132 ** Returns The new or current trace level
133 **
134 *******************************************************************************/
CE_SetTraceLevel(uint8_t new_level)135 uint8_t CE_SetTraceLevel(uint8_t new_level) {
136 if (new_level != 0xFF) ce_cb.trace_level = new_level;
137
138 return (ce_cb.trace_level);
139 }
140