1 /*
2 * Copyright (C) 2010 NXP Semiconductors
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 /*!
18 * \file phLlcNfc_StateMachine.c
19 * \brief Llc state machine implemenatation.
20 *
21 * Project: NFC-FRI-1.1
22 *
23 * $Date: Fri Apr 17 09:17:48 2009 $
24 * $Author: ing02260 $
25 * $Revision: 1.8 $
26 * $Aliases: NFC_FRI1.1_WK916_R23_1,NFC_FRI1.1_WK918_R24_1,NFC_FRI1.1_WK920_PREP1,NFC_FRI1.1_WK920_R25_1,NFC_FRI1.1_WK922_PREP1,NFC_FRI1.1_WK922_R26_1,NFC_FRI1.1_WK924_PREP1,NFC_FRI1.1_WK924_R27_1,NFC_FRI1.1_WK926_R28_1,NFC_FRI1.1_WK926_R28_2,NFC_FRI1.1_WK926_R28_3,NFC_FRI1.1_WK928_R29_1,NFC_FRI1.1_WK930_R30_1,NFC_FRI1.1_WK934_PREP_1,NFC_FRI1.1_WK934_R31_1,NFC_FRI1.1_WK941_PREP1,NFC_FRI1.1_WK941_PREP2,NFC_FRI1.1_WK941_1,NFC_FRI1.1_WK943_R32_1,NFC_FRI1.1_WK949_PREP1,NFC_FRI1.1_WK943_R32_10,NFC_FRI1.1_WK943_R32_13,NFC_FRI1.1_WK943_R32_14,NFC_FRI1.1_WK1007_R33_1,NFC_FRI1.1_WK1007_R33_4,NFC_FRI1.1_WK1017_PREP1,NFC_FRI1.1_WK1017_R34_1,NFC_FRI1.1_WK1017_R34_2,NFC_FRI1.1_WK1023_R35_1 $
27 *
28 */
29
30 /*************************** Includes *******************************/
31 #include <phNfcTypes.h>
32 #include <phNfcStatus.h>
33 #include <phOsalNfc.h>
34 #include <phNfcInterface.h>
35 #include <phLlcNfc_DataTypes.h>
36 #include <phLlcNfc_Frame.h>
37
38 /*********************** End of includes ****************************/
39
40 /***************************** Macros *******************************/
41
42 /************************ End of macros *****************************/
43
44 /*********************** Local functions ****************************/
45
46 /******************** End of Local functions ************************/
47
48 /********************** Global variables ****************************/
49
50 /******************** End of Global Variables ***********************/
51
52 NFCSTATUS
phLlcNfc_H_ChangeState(phLlcNfc_Context_t * psLlcCtxt,phLlcNfc_State_t changeStateTo)53 phLlcNfc_H_ChangeState(
54 phLlcNfc_Context_t *psLlcCtxt,
55 phLlcNfc_State_t changeStateTo
56 )
57 {
58 NFCSTATUS result = PHNFCSTVAL(CID_NFC_LLC,
59 NFCSTATUS_INVALID_STATE);
60 if ((NULL != psLlcCtxt) &&
61 (changeStateTo != phLlcNfc_Uninitialise_State))
62 {
63 switch(psLlcCtxt->state)
64 {
65 case phLlcNfc_Uninitialise_State:
66 {
67 if (phLlcNfc_Initialising_State == changeStateTo)
68 {
69 result = NFCSTATUS_SUCCESS;
70 psLlcCtxt->state = changeStateTo;
71 }
72 break;
73 }
74 case phLlcNfc_Initialising_State:
75 {
76 if (phLlcNfc_Initialised_State == changeStateTo)
77 {
78 result = NFCSTATUS_SUCCESS;
79 psLlcCtxt->state = changeStateTo;
80 }
81 break;
82 }
83 case phLlcNfc_Initialised_State:
84 {
85 if (changeStateTo > phLlcNfc_Initialising_State)
86 {
87 result = NFCSTATUS_SUCCESS;
88 psLlcCtxt->state = changeStateTo;
89 }
90 break;
91 }
92 case phLlcNfc_ReceiveWait_State:
93 {
94 if (changeStateTo >= phLlcNfc_Initialised_State)
95 {
96 result = NFCSTATUS_SUCCESS;
97 psLlcCtxt->state = changeStateTo;
98 }
99 break;
100 }
101 case phLlcNfc_Sending_State:
102 {
103 if ((phLlcNfc_Initialised_State == changeStateTo) ||
104 (phLlcNfc_Sending_State == changeStateTo))
105 {
106 result = NFCSTATUS_SUCCESS;
107 psLlcCtxt->state = changeStateTo;
108 }
109 break;
110 }
111 case phLlcNfc_Receiving_State:
112 {
113 if ((phLlcNfc_Initialised_State == changeStateTo) ||
114 (phLlcNfc_Sending_State == changeStateTo))
115 {
116 result = NFCSTATUS_SUCCESS;
117 psLlcCtxt->state = changeStateTo;
118 }
119 break;
120 }
121 case phLlcNfc_Resend_State:
122 {
123 if (phLlcNfc_Initialised_State == changeStateTo)
124 {
125 result = NFCSTATUS_SUCCESS;
126 psLlcCtxt->state = changeStateTo;
127 }
128 if (phLlcNfc_Sending_State == changeStateTo)
129 {
130 result = NFCSTATUS_SUCCESS;
131 if (0 != psLlcCtxt->s_frameinfo.s_send_store.winsize_cnt)
132 {
133 psLlcCtxt->state = changeStateTo;
134 }
135 }
136 break;
137 }
138 default:
139 {
140 /* Error scenario: There cant be any change in the state,
141 while LLC is in these states */
142 result = PHNFCSTVAL(CID_NFC_LLC,
143 NFCSTATUS_INVALID_FORMAT);
144 break;
145 }
146 }
147 }
148 if ((NULL != psLlcCtxt) &&
149 (phLlcNfc_Uninitialise_State == changeStateTo))
150 {
151 psLlcCtxt->state = changeStateTo;
152 }
153 return result;
154 }
155