Diff: lib_NDEF_AAR.c

Revision:

0:3b093bd0819e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib_NDEF_AAR.c	Mon Dec 15 19:41:36 2014 +0000
@@ -0,0 +1,179 @@
+/**
+  ******************************************************************************
+  * @file    lib_NDEF_AAR.c
+  * @author  MMY Application Team
+  * @version V1.0.0
+  * @date    20-November-2013
+  * @brief   This file help to add AAR to NDEF file.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
+  *
+  * Licensed under MMY-ST Liberty SW License Agreement V2, (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.st.com/software_license_agreement_liberty_v2
+  *
+  * 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.
+  *
+  ******************************************************************************
+  */
+/* Includes ------------------------------------------------------------------*/
+#include "lib_NDEF_AAR.h"
+
+/** @addtogroup NFC_libraries
+ * 	@{
+ *	@brief  <b>This is the library used to manage the content of the TAG (data)
+ *          But also the specific feature of the tag, for instance
+ *          password, gpo... </b>
+ */
+
+
+/** @addtogroup libNFC_FORUM
+  * @{
+	*	@brief  This part of the library manage data which follow NFC forum organisation.
+  */
+
+/**
+ * @brief  This buffer contains the data send/received by TAG
+ */
+extern uint8_t NDEF_Buffer [NDEF_MAX_SIZE];
+
+/** @defgroup libAAR_Private_Functions
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** @defgroup libAAR_Public_Functions
+  * @{
+	*	@brief  This file is used to manage AAR (stored or loaded in tag)
+  */ 
+
+
+	/**
+  * @brief  This fonction add AAR (Android Application Record) in the tag
+	* @param	pAARStruct : pointer on structure that contain AAR information
+  * @retval SUCCESS : AAR added
+	* @retval ERROR : Not able to add AAR
+  */
+uint16_t NDEF_AddAAR ( sAARInfo *pAARStruct )
+{
+	uint16_t status = ERROR;
+	uint16_t DataSize;
+	uint16_t Offset=0;
+	uint32_t AAROffset = 0;
+	uint16_t NDEF_Size = 0;
+	uint8_t RecordFlag=0;
+	uint8_t AARRecordFlag;
+	
+  /* AAR: External Type Record Header */
+  /************************************/	
+  /*	7 |  6 |  5 |  4 |  3 | 2  1  0 */
+  /*----------------------------------*/	
+  /* MB   ME   CF   SR   IL    TNF    */  /* <---- IL=0, CF=0 and SR=1 TNF=4 NFC Forum external type*/
+  /*----------------------------------*/	
+  /*					TYPE LENGTH 						*/
+  /*----------------------------------*/
+  /*				PAYLOAD LENGTH 3 					*/  /* <---- Not Used  */
+  /*----------------------------------*/
+  /*			  PAYLOAD LENGTH 2 					*/  /* <---- Not Used  */
+  /*----------------------------------*/
+  /*				PAYLOAD LENGTH 1 					*/  /* <---- Not Used  */ 
+  /*----------------------------------*/	
+  /*				PAYLOAD LENGTH 0 					*/  
+  /*----------------------------------*/
+  /*					ID LENGTH 							*/  /* <---- Not Used  */
+  /*----------------------------------*/
+  /*							TYPE 								*/  /* android.com:pkg */
+  /*----------------------------------*/
+  /*							 ID                 */  /* <---- Not Used  */ 
+  /************************************/
+	
+	/* Do we have to add AAR to an existing NDEF message */	
+	/* retrieve current NDEF size and current record flag*/
+	status = ForceReadData( 0 , 3 , NDEF_Buffer);
+	
+	if( status == NDEF_ACTION_COMPLETED)
+	{
+		NDEF_Size = (uint16_t) (NDEF_Buffer[0] << 8);
+		NDEF_Size = NDEF_Size | (uint16_t) (NDEF_Buffer[1]);
+		RecordFlag = NDEF_Buffer[2];
+	}
+	
+	if( NDEF_Size != 0)
+	{
+		AAROffset = NDEF_Size +2;
+		RecordFlag &= 0xBF; /* remove ME flag on NDEF */
+		AARRecordFlag = 0x54; /* don't put MB flag */
+	}
+	else
+	{
+		AAROffset = 2;
+		AARRecordFlag = 0xD4; /* put MB and ME flag */
+	}
+  
+	/* fill AAR record header */
+	Offset = 0;
+	NDEF_Buffer[Offset++] = AARRecordFlag;   /* Record Flag */
+	NDEF_Buffer[Offset++] = AAR_TYPE_STRING_LENGTH;
+	NDEF_Buffer[Offset++] = 0x00; /* Will be filled at the end when payload size is known */
+  
+	memcpy(&NDEF_Buffer[Offset], AAR_TYPE_STRING, AAR_TYPE_STRING_LENGTH);
+  
+	/* fill AAR payload */
+	memcpy( &NDEF_Buffer[Offset + AAR_TYPE_STRING_LENGTH], pAARStruct->PakageName,strlen(pAARStruct->PakageName));
+	
+	NDEF_Buffer[2] = strlen(pAARStruct->PakageName);
+	
+	DataSize = Offset + AAR_TYPE_STRING_LENGTH + strlen(pAARStruct->PakageName);
+	
+	/* Write NDEF */
+	status = WriteData ( AAROffset , DataSize , NDEF_Buffer);
+	
+	/* Write NDEF size to complete*/
+	if( status == NDEF_ACTION_COMPLETED)
+	{
+		DataSize = NDEF_Size + DataSize; /* Must add to the NDEF size the size of the AAR record*/
+		NDEF_Buffer[0] = (DataSize & 0xFF00)>>8;
+		NDEF_Buffer[1] = (DataSize & 0x00FF);
+		if( NDEF_Size != 0)
+		{
+			NDEF_Buffer[2] = RecordFlag;
+			status = WriteData ( 0x00 , 3 , NDEF_Buffer);
+		}
+		else
+			status = WriteData ( 0x00 , 2 , NDEF_Buffer);
+	}
+	
+  
+	if( status == NDEF_ACTION_COMPLETED)
+		return SUCCESS;
+	else
+		return ERROR;
+}
+
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/******************* (C) COPYRIGHT 2013 STMicroelectronics *****END OF FILE****/
+
+