Diego Ostuni / libNDEF

Fork for the GitHub

lib_NDEF_Wifi.cpp@0:de13951f30f6, 2019-11-14 (annotated)

Committer:
DiegoOstuni
Date:
Thu Nov 14 10:34:11 2019 +0000
Revision:
0:de13951f30f6
Add files

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DiegoOstuni 0:de13951f30f6 1 /**
DiegoOstuni 0:de13951f30f6 2 ******************************************************************************
DiegoOstuni 0:de13951f30f6 3 * @file lib_NDEF_Wifi.c
DiegoOstuni 0:de13951f30f6 4 * @author Central LAB
DiegoOstuni 0:de13951f30f6 5 * @version V1.0.0
DiegoOstuni 0:de13951f30f6 6 * @date 7-October-2015
DiegoOstuni 0:de13951f30f6 7 * @ingroup LibNDEF_Wifi
DiegoOstuni 0:de13951f30f6 8 * @brief This file helps to manage a NDEF message representing a Wifi Token.
DiegoOstuni 0:de13951f30f6 9 ******************************************************************************
DiegoOstuni 0:de13951f30f6 10 * @attention
DiegoOstuni 0:de13951f30f6 11 *
DiegoOstuni 0:de13951f30f6 12 * <h2><center>&copy; COPYRIGHT 2016 STMicroelectronics</center></h2>
DiegoOstuni 0:de13951f30f6 13 *
DiegoOstuni 0:de13951f30f6 14 * Licensed under ST MYLIBERTY SOFTWARE LICENSE AGREEMENT (the "License");
DiegoOstuni 0:de13951f30f6 15 * You may not use this file except in compliance with the License.
DiegoOstuni 0:de13951f30f6 16 * You may obtain a copy of the License at:
DiegoOstuni 0:de13951f30f6 17 *
DiegoOstuni 0:de13951f30f6 18 * http://www.st.com/myliberty
DiegoOstuni 0:de13951f30f6 19 *
DiegoOstuni 0:de13951f30f6 20 * Unless required by applicable law or agreed to in writing, software
DiegoOstuni 0:de13951f30f6 21 * distributed under the License is distributed on an "AS IS" BASIS,
DiegoOstuni 0:de13951f30f6 22 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
DiegoOstuni 0:de13951f30f6 23 * AND SPECIFICALLY DISCLAIMING THE IMPLIED WARRANTIES OF MERCHANTABILITY,
DiegoOstuni 0:de13951f30f6 24 * FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
DiegoOstuni 0:de13951f30f6 25 * See the License for the specific language governing permissions and
DiegoOstuni 0:de13951f30f6 26 * limitations under the License.
DiegoOstuni 0:de13951f30f6 27 *
DiegoOstuni 0:de13951f30f6 28 ******************************************************************************
DiegoOstuni 0:de13951f30f6 29 */
DiegoOstuni 0:de13951f30f6 30
DiegoOstuni 0:de13951f30f6 31 /* Includes ------------------------------------------------------------------*/
DiegoOstuni 0:de13951f30f6 32 #include "lib_NDEF_Wifi.h"
DiegoOstuni 0:de13951f30f6 33 #define ATTRIBUTE_ID_SSID_LSB 0X10
DiegoOstuni 0:de13951f30f6 34 #define ATTRIBUTE_ID_SSID_MSB 0X45
DiegoOstuni 0:de13951f30f6 35
DiegoOstuni 0:de13951f30f6 36
DiegoOstuni 0:de13951f30f6 37 #define ATTRIBUTE_ID_NETWORK_LSB 0X10
DiegoOstuni 0:de13951f30f6 38 #define ATTRIBUTE_ID_NETWORK_MSB 0X27
DiegoOstuni 0:de13951f30f6 39
DiegoOstuni 0:de13951f30f6 40
DiegoOstuni 0:de13951f30f6 41 /** @addtogroup lib_NDEF_Wifi Wifi OOB library (WPS)
DiegoOstuni 0:de13951f30f6 42 * @ingroup libNDEF
DiegoOstuni 0:de13951f30f6 43 * @brief This module is used to manage a Wifi Out-Of-Band NDEF message, to start a communication based on Wifi.
DiegoOstuni 0:de13951f30f6 44 * @details The Wifi OOB format is described by the Wifi Protected Setup specification.
DiegoOstuni 0:de13951f30f6 45 * It consists in a list of data elements formated as type-length-value.
DiegoOstuni 0:de13951f30f6 46 * This module allows to build, write & read such data embedded in a NDEF message.
DiegoOstuni 0:de13951f30f6 47 * @section Wifi_Library_Usage Wifi NDEF library usage
DiegoOstuni 0:de13951f30f6 48 * @subsection Write_Wifi_OOB How to write a Wifi OOB
DiegoOstuni 0:de13951f30f6 49 * The Wifi OOB written in a NDEF record by this module has the following structure:
DiegoOstuni 0:de13951f30f6 50 * - Version
DiegoOstuni 0:de13951f30f6 51 * - Credential
DiegoOstuni 0:de13951f30f6 52 - Network index
DiegoOstuni 0:de13951f30f6 53 - SSID
DiegoOstuni 0:de13951f30f6 54 - Authentication Type
DiegoOstuni 0:de13951f30f6 55 - Encryption Type
DiegoOstuni 0:de13951f30f6 56 - Network Key
DiegoOstuni 0:de13951f30f6 57 - MAC Address
DiegoOstuni 0:de13951f30f6 58 - Vendor Extension
DiegoOstuni 0:de13951f30f6 59 - Network Key Shareable
DiegoOstuni 0:de13951f30f6 60 - Vendor Extension
DiegoOstuni 0:de13951f30f6 61 - Version2
DiegoOstuni 0:de13951f30f6 62
DiegoOstuni 0:de13951f30f6 63 To write a Wifi OOB, the user must:
DiegoOstuni 0:de13951f30f6 64 1. Instanciate & initialize a `sWifiTokenInfo` structure, such as:
DiegoOstuni 0:de13951f30f6 65
DiegoOstuni 0:de13951f30f6 66 sWifiTokenInfo wps_oob = {.NetworkSSID = "MY_SSID",
DiegoOstuni 0:de13951f30f6 67 .AuthenticationType = NDEF_WIFI_AUTHENTICATION_NONE,
DiegoOstuni 0:de13951f30f6 68 .EncryptionType = NDEF_WIFI_ENCRYPTION_NONE,
DiegoOstuni 0:de13951f30f6 69 .NetworkKey = "01234567"};
DiegoOstuni 0:de13951f30f6 70 @note
DiegoOstuni 0:de13951f30f6 71 1. `AuthenticationType` & `EncryptionType` fields must respectively be values from enums: `Ndef_Wifi_Authentication_t` & `Ndef_Wifi_Encryption_t`.
DiegoOstuni 0:de13951f30f6 72 2. If the `Network key` is set to an empty string, the library sets it to `00000000`.\n
DiegoOstuni 0:de13951f30f6 73 Even if 0-length Network Key is supposed to be supported, smartphones dont necessarily accept it.
DiegoOstuni 0:de13951f30f6 74
DiegoOstuni 0:de13951f30f6 75 2. Call the `NDEF_WriteWifiToken` function on a pointer on the previous struct instance:
DiegoOstuni 0:de13951f30f6 76
DiegoOstuni 0:de13951f30f6 77 NDEF_WriteWifiToken(&wps_oob);
DiegoOstuni 0:de13951f30f6 78 * @subsection Read_Wifi_OOB How to read a Wifi OOB
DiegoOstuni 0:de13951f30f6 79 * 1. Read the 1st record of the NDEF message:
DiegoOstuni 0:de13951f30f6 80 *
DiegoOstuni 0:de13951f30f6 81 * sRecordInfo_t rRecord;
DiegoOstuni 0:de13951f30f6 82 * NDEF_ReadNDEF(NDEF_Buffer);
DiegoOstuni 0:de13951f30f6 83 * NDEF_IdentifyBuffer(rRecord,NDEF_Buffer);
DiegoOstuni 0:de13951f30f6 84 * 2. Decode the Wifi OOB:
DiegoOstuni 0:de13951f30f6 85 *
DiegoOstuni 0:de13951f30f6 86 * sWifiTokenInfo wps;
DiegoOstuni 0:de13951f30f6 87 * NDEF_ReadWifiToken(&record, &wps);
DiegoOstuni 0:de13951f30f6 88 * @note
DiegoOstuni 0:de13951f30f6 89 * Only the `NetworkSSID` & `NetworkKey` are extracted from the Wifi OOB, other fields of the `sWifiTokenInfo` structure are left un-initialized.
DiegoOstuni 0:de13951f30f6 90 * @{
DiegoOstuni 0:de13951f30f6 91 */
DiegoOstuni 0:de13951f30f6 92
DiegoOstuni 0:de13951f30f6 93 /* This buffer contains the data send/received by the TAG */
DiegoOstuni 0:de13951f30f6 94 extern uint8_t NDEF_Buffer [NDEF_MAX_SIZE];
DiegoOstuni 0:de13951f30f6 95
DiegoOstuni 0:de13951f30f6 96
DiegoOstuni 0:de13951f30f6 97 static void NDEF_FillWifiTokenStruct( uint8_t* pPayload, uint32_t PayloadSize, sWifiTokenInfo *pWifiTokenStruct);
DiegoOstuni 0:de13951f30f6 98 static void NDEF_Read_WifiToken ( struct sRecordInfo *pRecordStruct, sWifiTokenInfo *pWifiTokenStruct );
DiegoOstuni 0:de13951f30f6 99
DiegoOstuni 0:de13951f30f6 100 /**
DiegoOstuni 0:de13951f30f6 101 * @brief This function fills a WifiToken structure with information from the NDEF message.
DiegoOstuni 0:de13951f30f6 102 * @param pPayload Pointer on the payload data of the NDEF message.
DiegoOstuni 0:de13951f30f6 103 * @param PayloadSize number of data in the payload.
DiegoOstuni 0:de13951f30f6 104 * @param pWifiTokenStruct pointer on the structure to fill.
DiegoOstuni 0:de13951f30f6 105 * @retval NONE
DiegoOstuni 0:de13951f30f6 106 */
DiegoOstuni 0:de13951f30f6 107 static void NDEF_FillWifiTokenStruct( uint8_t* pPayload, uint32_t PayloadSize, sWifiTokenInfo *pWifiTokenStruct)
DiegoOstuni 0:de13951f30f6 108 {
DiegoOstuni 0:de13951f30f6 109 uint8_t* pLastByteAdd,data1,data2,*temp,*temp_br ;
DiegoOstuni 0:de13951f30f6 110 uint16_t SSIDLen,NetWorkKeyLen;
DiegoOstuni 0:de13951f30f6 111 uint8_t *dbg,dbg1;
DiegoOstuni 0:de13951f30f6 112
DiegoOstuni 0:de13951f30f6 113
DiegoOstuni 0:de13951f30f6 114 pLastByteAdd = (uint8_t*)(pPayload + PayloadSize);
DiegoOstuni 0:de13951f30f6 115 pPayload--;
DiegoOstuni 0:de13951f30f6 116
DiegoOstuni 0:de13951f30f6 117 while(pPayload++ != pLastByteAdd)
DiegoOstuni 0:de13951f30f6 118 {
DiegoOstuni 0:de13951f30f6 119 uint8_t attribute = *pPayload;
DiegoOstuni 0:de13951f30f6 120 temp_br = pPayload;
DiegoOstuni 0:de13951f30f6 121 switch(attribute)
DiegoOstuni 0:de13951f30f6 122 {
DiegoOstuni 0:de13951f30f6 123
DiegoOstuni 0:de13951f30f6 124 case ATTRIBUTE_ID_SSID_LSB:
DiegoOstuni 0:de13951f30f6 125 temp = pPayload;
DiegoOstuni 0:de13951f30f6 126 dbg = temp;
DiegoOstuni 0:de13951f30f6 127 dbg1 = *++dbg;
DiegoOstuni 0:de13951f30f6 128 if(dbg1 == ATTRIBUTE_ID_SSID_MSB )
DiegoOstuni 0:de13951f30f6 129 {
DiegoOstuni 0:de13951f30f6 130 data1 = *++dbg;
DiegoOstuni 0:de13951f30f6 131 data2 = *++dbg;
DiegoOstuni 0:de13951f30f6 132 SSIDLen = data1;
DiegoOstuni 0:de13951f30f6 133 SSIDLen = SSIDLen << 8;
DiegoOstuni 0:de13951f30f6 134 SSIDLen |= data2;
DiegoOstuni 0:de13951f30f6 135 pPayload += 4;
DiegoOstuni 0:de13951f30f6 136 memcpy( pWifiTokenStruct->NetworkSSID, pPayload, SSIDLen);
DiegoOstuni 0:de13951f30f6 137 /* add end of string charactere */
DiegoOstuni 0:de13951f30f6 138 pWifiTokenStruct->NetworkSSID[SSIDLen] = '\0';
DiegoOstuni 0:de13951f30f6 139 pPayload += SSIDLen - 1;
DiegoOstuni 0:de13951f30f6 140 }
DiegoOstuni 0:de13951f30f6 141 else if(dbg1 == ATTRIBUTE_ID_NETWORK_MSB )
DiegoOstuni 0:de13951f30f6 142 {
DiegoOstuni 0:de13951f30f6 143 data1 = *++dbg;
DiegoOstuni 0:de13951f30f6 144 data2 = *++dbg;
DiegoOstuni 0:de13951f30f6 145 NetWorkKeyLen = data1;
DiegoOstuni 0:de13951f30f6 146 NetWorkKeyLen = NetWorkKeyLen << 8;
DiegoOstuni 0:de13951f30f6 147 NetWorkKeyLen |= data2;
DiegoOstuni 0:de13951f30f6 148 pPayload += 4;
DiegoOstuni 0:de13951f30f6 149 memcpy( pWifiTokenStruct->NetworkKey, pPayload, NetWorkKeyLen);
DiegoOstuni 0:de13951f30f6 150 /* add end of string charactere */
DiegoOstuni 0:de13951f30f6 151 pWifiTokenStruct->NetworkKey[NetWorkKeyLen] = '\0';
DiegoOstuni 0:de13951f30f6 152 pPayload += NetWorkKeyLen -1;
DiegoOstuni 0:de13951f30f6 153 }
DiegoOstuni 0:de13951f30f6 154 else
DiegoOstuni 0:de13951f30f6 155 {
DiegoOstuni 0:de13951f30f6 156 pPayload = temp_br;
DiegoOstuni 0:de13951f30f6 157 }
DiegoOstuni 0:de13951f30f6 158
DiegoOstuni 0:de13951f30f6 159 break;
DiegoOstuni 0:de13951f30f6 160
DiegoOstuni 0:de13951f30f6 161 default :
DiegoOstuni 0:de13951f30f6 162 ;
DiegoOstuni 0:de13951f30f6 163 }
DiegoOstuni 0:de13951f30f6 164 }
DiegoOstuni 0:de13951f30f6 165
DiegoOstuni 0:de13951f30f6 166 }
DiegoOstuni 0:de13951f30f6 167
DiegoOstuni 0:de13951f30f6 168 /**
DiegoOstuni 0:de13951f30f6 169 * @brief This fonction reads the WifiToken and store data in a structure.
DiegoOstuni 0:de13951f30f6 170 * @param pRecordStruct Pointer on the record structure.
DiegoOstuni 0:de13951f30f6 171 * @param pWifiTokenStruct Pointer on the structure to fill.
DiegoOstuni 0:de13951f30f6 172 * @retval NONE
DiegoOstuni 0:de13951f30f6 173 */
DiegoOstuni 0:de13951f30f6 174 static void NDEF_Read_WifiToken ( struct sRecordInfo *pRecordStruct, sWifiTokenInfo *pWifiTokenStruct )
DiegoOstuni 0:de13951f30f6 175 {
DiegoOstuni 0:de13951f30f6 176 uint8_t* pPayload;
DiegoOstuni 0:de13951f30f6 177 uint32_t PayloadSize;
DiegoOstuni 0:de13951f30f6 178
DiegoOstuni 0:de13951f30f6 179 PayloadSize = pRecordStruct->PayloadLength;
DiegoOstuni 0:de13951f30f6 180
DiegoOstuni 0:de13951f30f6 181 /* Read record header */
DiegoOstuni 0:de13951f30f6 182 pPayload = (uint8_t*)(pRecordStruct->PayloadBufferAdd);
DiegoOstuni 0:de13951f30f6 183
DiegoOstuni 0:de13951f30f6 184 if( pRecordStruct->NDEF_Type == URI_WIFITOKEN_TYPE)
DiegoOstuni 0:de13951f30f6 185 NDEF_FillWifiTokenStruct(pPayload , PayloadSize, pWifiTokenStruct);
DiegoOstuni 0:de13951f30f6 186
DiegoOstuni 0:de13951f30f6 187 }
DiegoOstuni 0:de13951f30f6 188
DiegoOstuni 0:de13951f30f6 189
DiegoOstuni 0:de13951f30f6 190 /**
DiegoOstuni 0:de13951f30f6 191 * @brief This fonction reads a NDEF record and retrieves a WifiToken information if any.
DiegoOstuni 0:de13951f30f6 192 * @param pRecordStruct Pointer on the record structure.
DiegoOstuni 0:de13951f30f6 193 * @param pWifiTokenStruct Pointer on a `sWifiTokenInfo` structure to fill with the WifiToken information.
DiegoOstuni 0:de13951f30f6 194 * @retval NDEF_OK WifiToken information from NDEF have been retrieved.
DiegoOstuni 0:de13951f30f6 195 * @retval NDEF_ERROR Not able to retrieve the WifiToken information.
DiegoOstuni 0:de13951f30f6 196 */
DiegoOstuni 0:de13951f30f6 197 uint16_t NDEF_ReadWifiToken(struct sRecordInfo *pRecordStruct, sWifiTokenInfo *pWifiTokenStruct)
DiegoOstuni 0:de13951f30f6 198 {
DiegoOstuni 0:de13951f30f6 199 uint16_t status = NDEF_ERROR;
DiegoOstuni 0:de13951f30f6 200
DiegoOstuni 0:de13951f30f6 201 if( pRecordStruct->NDEF_Type == URI_WIFITOKEN_TYPE )
DiegoOstuni 0:de13951f30f6 202 {
DiegoOstuni 0:de13951f30f6 203 NDEF_Read_WifiToken(pRecordStruct, pWifiTokenStruct );
DiegoOstuni 0:de13951f30f6 204 status = NDEF_OK;
DiegoOstuni 0:de13951f30f6 205 }
DiegoOstuni 0:de13951f30f6 206
DiegoOstuni 0:de13951f30f6 207 return status;
DiegoOstuni 0:de13951f30f6 208 }
DiegoOstuni 0:de13951f30f6 209
DiegoOstuni 0:de13951f30f6 210
DiegoOstuni 0:de13951f30f6 211 /**
DiegoOstuni 0:de13951f30f6 212 * @brief This fonction writes a NDEF message built with the WifiToken data given in the structure.
DiegoOstuni 0:de13951f30f6 213 * @param pWifiTokenStruct Pointer on the structure containing the WifiToken information.
DiegoOstuni 0:de13951f30f6 214 * @retval NDEF_OK The NDEF message has been successfully written.
DiegoOstuni 0:de13951f30f6 215 * @retval NDEF_ERROR Not able to store the NDEF message inside the tag.
DiegoOstuni 0:de13951f30f6 216 */
DiegoOstuni 0:de13951f30f6 217 uint16_t NDEF_WriteWifiToken ( sWifiTokenInfo *pWifiTokenStruct, I2C* mi2cChannel )
DiegoOstuni 0:de13951f30f6 218 {
DiegoOstuni 0:de13951f30f6 219 uint16_t status = NDEF_ERROR;
DiegoOstuni 0:de13951f30f6 220 uint8_t* pPayload,initStage = 0;
DiegoOstuni 0:de13951f30f6 221 uint16_t DataSize;
DiegoOstuni 0:de13951f30f6 222 uint32_t PayloadSize,SSIDSize,SSIDKeySize;
DiegoOstuni 0:de13951f30f6 223
DiegoOstuni 0:de13951f30f6 224 if(pWifiTokenStruct->NetworkKey[0] == '\0')
DiegoOstuni 0:de13951f30f6 225 {
DiegoOstuni 0:de13951f30f6 226 /* Empty network key is not supported by Phones */
DiegoOstuni 0:de13951f30f6 227 strcpy(pWifiTokenStruct->NetworkKey, NDEF_WIFI_DEFAULT_NETWORK_KEY);
DiegoOstuni 0:de13951f30f6 228 }
DiegoOstuni 0:de13951f30f6 229
DiegoOstuni 0:de13951f30f6 230 uint8_t configToken1[] = {0x10,0x4A, /* Attribute ID : Version*/
DiegoOstuni 0:de13951f30f6 231 0x00,0x01, /* Attribute ID Length*/
DiegoOstuni 0:de13951f30f6 232 0x10, /* Version 1.0*/
DiegoOstuni 0:de13951f30f6 233 0x10,0x0E, /* Attribute ID Credential*/
DiegoOstuni 0:de13951f30f6 234 0x00,0x48, /* Attribute ID Length*/
DiegoOstuni 0:de13951f30f6 235 0x10,0x26, /* Attribute ID : Network Index*/
DiegoOstuni 0:de13951f30f6 236 0x00,0x01, /* Attribute Length*/
DiegoOstuni 0:de13951f30f6 237 0x01, /* Index */
DiegoOstuni 0:de13951f30f6 238 0x10,0x45, /* Attribute ID :SSID*/
DiegoOstuni 0:de13951f30f6 239
DiegoOstuni 0:de13951f30f6 240 };
DiegoOstuni 0:de13951f30f6 241
DiegoOstuni 0:de13951f30f6 242 /* Fill SSID length + SSID between configToken1 and configToken3*/
DiegoOstuni 0:de13951f30f6 243
DiegoOstuni 0:de13951f30f6 244 uint8_t configToken3[] = {0x10,0x03, /* Attribute ID :Authentication Type*/
DiegoOstuni 0:de13951f30f6 245 0x00,0x02, /* Attribute Length*/
DiegoOstuni 0:de13951f30f6 246 0x00,0x01, /* Attribute Type : Open*/
DiegoOstuni 0:de13951f30f6 247 0x10,0x0F, /* Attribute ID : Encryption Type*/
DiegoOstuni 0:de13951f30f6 248 0x00,0x02, /* Attribute Length*/
DiegoOstuni 0:de13951f30f6 249 0x00,0x01, /* Encryption Type : None*/
DiegoOstuni 0:de13951f30f6 250 0x10,0x27}; /* Attribute ID : Network Key */
DiegoOstuni 0:de13951f30f6 251
DiegoOstuni 0:de13951f30f6 252
DiegoOstuni 0:de13951f30f6 253 /*Fill SSID KEY Length and SSID Key between configToken3 and configToken5*/
DiegoOstuni 0:de13951f30f6 254
DiegoOstuni 0:de13951f30f6 255 uint8_t configToken5[] = {0x10,0x20, /* Attribute ID : MAC Address */
DiegoOstuni 0:de13951f30f6 256 0x00,0x06, /* Attribute Length*/
DiegoOstuni 0:de13951f30f6 257 0, /*MAC-ADDRESS*/
DiegoOstuni 0:de13951f30f6 258 0, /*MAC-ADDRESS*/
DiegoOstuni 0:de13951f30f6 259 0, /*MAC-ADDRESS*/
DiegoOstuni 0:de13951f30f6 260 0, /*MAC-ADDRESS*/
DiegoOstuni 0:de13951f30f6 261 0, /*MAC-ADDRESS*/
DiegoOstuni 0:de13951f30f6 262 0, /*MAC-ADDRESS*/
DiegoOstuni 0:de13951f30f6 263 0x10,0x49, /* Attribute ID : Vendor Extension */
DiegoOstuni 0:de13951f30f6 264 0x00,0x06, /* Attribute Length*/
DiegoOstuni 0:de13951f30f6 265 0x00,0x37,0x2A, /* Vendor ID:WFA*/
DiegoOstuni 0:de13951f30f6 266 0x02, /* Subelement ID:Network Key Shareable*/
DiegoOstuni 0:de13951f30f6 267 0x01, /* Subelement Length*/
DiegoOstuni 0:de13951f30f6 268 0x01, /*Network Key Shareable : TRUE*/
DiegoOstuni 0:de13951f30f6 269 0x10,0x49, /* Attribute ID : Vendor Extension */
DiegoOstuni 0:de13951f30f6 270 0x00,0x06,/* Attribute Length*/
DiegoOstuni 0:de13951f30f6 271 0x00,0x37,0x2A,/* Vendor ID:WFA*/
DiegoOstuni 0:de13951f30f6 272 0x00, /* Subelement ID:Version2*/
DiegoOstuni 0:de13951f30f6 273 0x01, /* Subelement Length:1*/
DiegoOstuni 0:de13951f30f6 274 0x20 /* Version2*/
DiegoOstuni 0:de13951f30f6 275 };
DiegoOstuni 0:de13951f30f6 276
DiegoOstuni 0:de13951f30f6 277
DiegoOstuni 0:de13951f30f6 278 /* Set size of the tokens */
DiegoOstuni 0:de13951f30f6 279 const uint32_t CONFIG_TOKEN_1 = sizeof(configToken1);
DiegoOstuni 0:de13951f30f6 280 const uint32_t CONFIG_TOKEN_3 = sizeof(configToken3);
DiegoOstuni 0:de13951f30f6 281 const uint32_t CONFIG_TOKEN_5 = sizeof(configToken5);
DiegoOstuni 0:de13951f30f6 282
DiegoOstuni 0:de13951f30f6 283 /* Update Token3 for Autentication & Encryption Types, their default value is coded in token3 */
DiegoOstuni 0:de13951f30f6 284 configToken3[CONFIG_TOKEN_3_AUTHENTICATION_TYPE_INDEX] = pWifiTokenStruct->AuthenticationType & 0xFF;
DiegoOstuni 0:de13951f30f6 285 configToken3[CONFIG_TOKEN_3_ENCRYPTION_TYPE_INDEX] = pWifiTokenStruct->EncryptionType & 0xFF;
DiegoOstuni 0:de13951f30f6 286
DiegoOstuni 0:de13951f30f6 287 /* fill Wifi record header */
DiegoOstuni 0:de13951f30f6 288 NDEF_Buffer[FIRST_RECORD_OFFSET] = 0xD2; /* Record Flag */
DiegoOstuni 0:de13951f30f6 289 NDEF_Buffer[FIRST_RECORD_OFFSET+1] = WIFITOKEN_TYPE_STRING_LENGTH;
DiegoOstuni 0:de13951f30f6 290 NDEF_Buffer[FIRST_RECORD_OFFSET+2] = 76; /* needs to be autocalculated - done at the end */
DiegoOstuni 0:de13951f30f6 291
DiegoOstuni 0:de13951f30f6 292 memcpy(&NDEF_Buffer[FIRST_RECORD_OFFSET+3], WIFITOKEN_TYPE_STRING, WIFITOKEN_TYPE_STRING_LENGTH);
DiegoOstuni 0:de13951f30f6 293
DiegoOstuni 0:de13951f30f6 294 pPayload = &NDEF_Buffer[FIRST_RECORD_OFFSET+3+WIFITOKEN_TYPE_STRING_LENGTH];
DiegoOstuni 0:de13951f30f6 295 PayloadSize = 0;
DiegoOstuni 0:de13951f30f6 296
DiegoOstuni 0:de13951f30f6 297 /* Compute credential length */
DiegoOstuni 0:de13951f30f6 298
DiegoOstuni 0:de13951f30f6 299 uint16_t credential_length = 5 + // Network index
DiegoOstuni 0:de13951f30f6 300 4 + // SSID type + length
DiegoOstuni 0:de13951f30f6 301 strlen(pWifiTokenStruct->NetworkSSID) + // SSID
DiegoOstuni 0:de13951f30f6 302 CONFIG_TOKEN_3 +
DiegoOstuni 0:de13951f30f6 303 2 + // Network key length
DiegoOstuni 0:de13951f30f6 304 strlen(pWifiTokenStruct->NetworkKey) + // Network KEY
DiegoOstuni 0:de13951f30f6 305 CONFIG_TOKEN_5;
DiegoOstuni 0:de13951f30f6 306
DiegoOstuni 0:de13951f30f6 307 /* update credential length */
DiegoOstuni 0:de13951f30f6 308 configToken1[CONFIG_TOKEN_1_CREDENTIAL_LENGTH_INDEX + 1] = credential_length & 0xff;
DiegoOstuni 0:de13951f30f6 309 configToken1[CONFIG_TOKEN_1_CREDENTIAL_LENGTH_INDEX] = credential_length>>8;
DiegoOstuni 0:de13951f30f6 310
DiegoOstuni 0:de13951f30f6 311
DiegoOstuni 0:de13951f30f6 312 for(initStage=0;initStage<CONFIG_TOKEN_1;initStage++)
DiegoOstuni 0:de13951f30f6 313 {
DiegoOstuni 0:de13951f30f6 314 *pPayload =configToken1[initStage];
DiegoOstuni 0:de13951f30f6 315 pPayload++;
DiegoOstuni 0:de13951f30f6 316 }
DiegoOstuni 0:de13951f30f6 317
DiegoOstuni 0:de13951f30f6 318 /*Fill SSID length and SSID value*/
DiegoOstuni 0:de13951f30f6 319 SSIDSize = strlen(pWifiTokenStruct->NetworkSSID);
DiegoOstuni 0:de13951f30f6 320 *pPayload = 0x00; pPayload++;
DiegoOstuni 0:de13951f30f6 321 *pPayload = SSIDSize & 0x000000FF; pPayload++;
DiegoOstuni 0:de13951f30f6 322
DiegoOstuni 0:de13951f30f6 323 strcpy((char*)pPayload,pWifiTokenStruct->NetworkSSID);
DiegoOstuni 0:de13951f30f6 324 pPayload = pPayload + strlen(pWifiTokenStruct->NetworkSSID);
DiegoOstuni 0:de13951f30f6 325
DiegoOstuni 0:de13951f30f6 326 for(initStage=0;initStage<CONFIG_TOKEN_3;initStage++)
DiegoOstuni 0:de13951f30f6 327 {
DiegoOstuni 0:de13951f30f6 328 *pPayload =configToken3[initStage];
DiegoOstuni 0:de13951f30f6 329 pPayload++;
DiegoOstuni 0:de13951f30f6 330 }
DiegoOstuni 0:de13951f30f6 331
DiegoOstuni 0:de13951f30f6 332 /* Fill the SSIDKey length and SSIDKey value */
DiegoOstuni 0:de13951f30f6 333 SSIDKeySize = strlen(pWifiTokenStruct->NetworkKey);
DiegoOstuni 0:de13951f30f6 334 *pPayload = 0x00; pPayload++;
DiegoOstuni 0:de13951f30f6 335 *pPayload = SSIDKeySize & 0x000000FF; pPayload++;
DiegoOstuni 0:de13951f30f6 336
DiegoOstuni 0:de13951f30f6 337 memcpy((char*)pPayload,pWifiTokenStruct->NetworkKey,SSIDKeySize);
DiegoOstuni 0:de13951f30f6 338 pPayload = pPayload + SSIDKeySize;
DiegoOstuni 0:de13951f30f6 339
DiegoOstuni 0:de13951f30f6 340 for(initStage=0;initStage<CONFIG_TOKEN_5;initStage++)
DiegoOstuni 0:de13951f30f6 341 {
DiegoOstuni 0:de13951f30f6 342 *pPayload =configToken5[initStage];
DiegoOstuni 0:de13951f30f6 343 pPayload++;
DiegoOstuni 0:de13951f30f6 344 }
DiegoOstuni 0:de13951f30f6 345
DiegoOstuni 0:de13951f30f6 346 PayloadSize += CONFIG_TOKEN_1 + CONFIG_TOKEN_3 + CONFIG_TOKEN_5 + SSIDSize + SSIDKeySize + 4 ; // +4 is for SSID & Key length fields
DiegoOstuni 0:de13951f30f6 347
DiegoOstuni 0:de13951f30f6 348 NDEF_Buffer[FIRST_RECORD_OFFSET+2] = (PayloadSize & 0x000000FF);
DiegoOstuni 0:de13951f30f6 349
DiegoOstuni 0:de13951f30f6 350 DataSize = PayloadSize + 3 + WIFITOKEN_TYPE_STRING_LENGTH;
DiegoOstuni 0:de13951f30f6 351
DiegoOstuni 0:de13951f30f6 352 /* Write NDEF */
DiegoOstuni 0:de13951f30f6 353 status = NDEF_WriteNDEF(DataSize , NDEF_Buffer, mi2cChannel);
DiegoOstuni 0:de13951f30f6 354
DiegoOstuni 0:de13951f30f6 355 return status;
DiegoOstuni 0:de13951f30f6 356 }
DiegoOstuni 0:de13951f30f6 357
DiegoOstuni 0:de13951f30f6 358
DiegoOstuni 0:de13951f30f6 359 /**
DiegoOstuni 0:de13951f30f6 360 * @}
DiegoOstuni 0:de13951f30f6 361 */
DiegoOstuni 0:de13951f30f6 362
DiegoOstuni 0:de13951f30f6 363
DiegoOstuni 0:de13951f30f6 364
DiegoOstuni 0:de13951f30f6 365 /******************* (C) COPYRIGHT 2016 STMicroelectronics *****END OF FILE****/
DiegoOstuni 0:de13951f30f6 366
DiegoOstuni 0:de13951f30f6 367