Diff: lib_NDEF_Text.cpp

Revision:

0:de13951f30f6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib_NDEF_Text.cpp	Thu Nov 14 10:34:11 2019 +0000
@@ -0,0 +1,175 @@
+/**
+  ******************************************************************************
+  * @file    lib_NDEF_Text.h
+  * @author  MMY Application Team
+  * @version $Revision: 3210 $
+  * @date    $Date: 2016-12-05 15:37:48 +0100 (Mon, 05 Dec 2016) $
+  * @brief   This file help to manage Text NDEF file.
+   ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2015 STMicroelectronics</center></h2>
+  *
+  * Licensed under ST MYLIBERTY SOFTWARE LICENSE AGREEMENT (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/myliberty  
+  *
+  * 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,
+  * AND SPECIFICALLY DISCLAIMING THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "lib_NDEF_Text.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 [];
+
+/**
+  * @}
+  */
+
+/** @defgroup libEmail_Public_Functions
+  * @{
+  * @brief  This file is used to manage Email (stored or loaded in tag)
+  */ 
+
+/**
+  * @brief  This function write the text in the TAG.
+  * @param  text : text to write.
+  * @retval NDEF_OK : NDEF file data written in the tag.
+  * @retval NDEF_ERROR : not able to store NDEF in tag.
+  * @retval NDEF_ERROR_MEMORY_INTERNAL : Cannot write to tag.
+  * @retval NDEF_ERROR_NOT_FORMATED : CCFile data not supported or not present.
+  * @retval NDEF_ERROR_MEMORY_TAG : Size not compatible with memory.
+  * @retval NDEF_ERROR_LOCKED : Tag locked, cannot be write.
+  */
+uint16_t NDEF_WriteText( char *text, I2C * mi2cChannel )
+{
+  uint16_t status = NDEF_ERROR;
+  uint32_t textSize, Offset = 0;
+
+ 
+  /* TEXT : 1+en+message */
+  textSize = 3 + strlen(text);
+
+  /* TEXT header */
+  NDEF_Buffer[Offset] = 0xD1;
+  if( textSize < 256 ) NDEF_Buffer[Offset] |= 0x10;                   // Set the SR bit
+  Offset++;
+
+  NDEF_Buffer[Offset++] = TEXT_TYPE_STRING_LENGTH;
+  if( textSize > 255 )
+  {
+    NDEF_Buffer[Offset++] = (textSize & 0xFF000000) >> 24;
+    NDEF_Buffer[Offset++] = (textSize & 0x00FF0000) >> 16;
+    NDEF_Buffer[Offset++] = (textSize & 0x0000FF00) >> 8;
+    NDEF_Buffer[Offset++] = textSize & 0x000000FF;
+  }
+  else
+  {
+    NDEF_Buffer[Offset++] = (uint8_t)textSize;
+  }
+  memcpy( &NDEF_Buffer[Offset], TEXT_TYPE_STRING, TEXT_TYPE_STRING_LENGTH );
+  Offset += TEXT_TYPE_STRING_LENGTH;
+
+  /* TEXT payload */
+  NDEF_Buffer[Offset++] = ISO_ENGLISH_CODE_STRING_LENGTH;
+  memcpy( &NDEF_Buffer[Offset], ISO_ENGLISH_CODE_STRING, ISO_ENGLISH_CODE_STRING_LENGTH );
+  Offset += ISO_ENGLISH_CODE_STRING_LENGTH;
+
+  memcpy( &NDEF_Buffer[Offset], text, strlen(text) );
+  Offset += strlen(text);
+
+  status = NfcTag_WriteNDEF( Offset , NDEF_Buffer, mi2cChannel );
+
+  return status;
+}
+
+
+/**
+  * @brief  This function the Text information in a record if any.
+  * @param  pRecordStruct Pointer on a NDEF record structure.
+  * @param  pText A pointer on a text information structure, used to return the text & its metadata.
+  * @retval NDEF_OK                    Text information has been retrieved.
+  * @retval NDEF_ERROR                 The record is not a Text record.
+  * @retval NDEF_ERROR_MEMORY_INTERNAL Language code or Text length is too big for the buffers.
+  */
+uint16_t NDEF_ReadText( sRecordInfo_t *pRecordStruct, NDEF_Text_info_t *pText )
+{
+  uint16_t status = NDEF_ERROR;
+
+  if( pRecordStruct->NDEF_Type == TEXT_TYPE )
+  {
+    /* Get the text metadata (status byte (encoding & language code length) + language code) */
+    NDEF_Text_metadata_t *text_record_info = (NDEF_Text_metadata_t *)pRecordStruct->PayloadBufferAdd;
+        
+    uint32_t text_length = pRecordStruct->PayloadLength           /* record length */
+                           - text_record_info->language_length    /* minus language code length */
+                           - sizeof(uint8_t);                     /* minus the status byte length */
+    
+    if((text_record_info->language_length >= NDEF_TEXT_LANGUAGE_CODE_MAX_LENGTH) || 
+        (text_length >= NDEF_TEXT_MAX_LENGTH))
+    {
+      /* One of the text info structure buffer is too small */
+      return NDEF_ERROR_MEMORY_INTERNAL;
+    }
+    
+    /* Retrieve the encoding */
+    pText->encoding =  (NDEF_Text_encoding_t)text_record_info->encoding;
+
+    /* Save the language code string (adding null char at the end) */
+    memcpy(&pText->language_code,text_record_info->language,text_record_info->language_length);
+    pText->language_code[text_record_info->language_length] = '\0';
+    
+    /* Copy the text string itself (adding null char at the end) */
+    memcpy(&pText->text, text_record_info->language + text_record_info->language_length,text_length);
+    pText->text[text_length] = '\0';
+    
+    status = NDEF_OK;
+  }
+  else 
+  {
+    /* Not a text record, exit in error */
+    status = NDEF_ERROR;
+  }
+
+  return status;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/******************* (C) COPYRIGHT 2015 STMicroelectronics *****END OF FILE****/