Diff: PIMA15740/PIMAString.h

Revision:

2:67753d738eb8

Parent:

1:71c0e9dc153d

Child:

3:1fcb46ab18df

--- a/PIMA15740/PIMAString.h	Fri Aug 23 19:34:59 2013 +0000
+++ b/PIMA15740/PIMAString.h	Fri Aug 23 20:02:44 2013 +0000
@@ -1,18 +1,38 @@
-/* mbed USBHostPTP Library(PIMA15740 definitions)
- * Copyright (c) 2013 Dwayne Dilbeck
- * This software is distributed under the terms of the GNU Lesser General Public License
- */
+/**
+*  @file PIMAString.h
+*  @brief PIMA String class definition
+*  @author Dwayne Dilbeck
+*  @date 8/23/2013
+* 
+* mbed USBHostPTP Library(PIMA15740 definitions)
+* Copyright (c) 2013 Dwayne Dilbeck
+* This software is distributed under the terms of the GNU Lesser General Public License
+*/
 
-
+/**
+*  Class PIMA String
+*
+*  The PIMA15740 standard defines a string as an 8bit length followed by a list
+*   of 16bit unicode characters
+*
+*/
 class PIMAString {
 public:
 
+  /**
+  * Constructor
+  * By default the pointers are set to NULL and length set to ZERO.
+  */
   PIMAString() {
      length=0;
      StringChars=NULL;
      vals=NULL;
   };
   
+  /**
+  * Desctructor
+  * Free the Memory allocated for cahracter storage
+  */
   ~PIMAString() {
      if( StringChars !=NULL)
          free(StringChars);
@@ -20,13 +40,24 @@
          free(vals);
    };
 
+  /**
+   *
+   *  @param currentPtr a unit8_t pointer to a buffer location where a PIMAString shoudl be read
+   *  
+   *  @return The number of bytes used to from the buffer to create the PIMA string.
+   */
  int FillString(uint8_t *currentPtr) {
      setLength(*currentPtr);
      setStringChars((uint16_t *)(currentPtr+1));
      return 2*length +1;
  };
 
-
+  /**
+  *  Truncate the unicode characters to make a string for printf.
+  *
+  *  @param none
+  *  @return pointer to an array of characters that is null terminated.
+  */
   char * getString() {
      if(vals!=NULL)
         free(vals);  
@@ -37,11 +68,23 @@
      return vals;
   }
 
+  /**
+  * Get the number of characters stored in the PIMA String
+  *
+  * @param none
+  * @return uint8_t value that is the number of chracters notstored in the PIMA String
+  */
   uint8_t getLength() {
      return this->length;
   }
  
  private:
+ /**
+ * Function to allocate unicode cahracter storage space and set the length value
+ *
+ * @param uint8_t The number of characters to create storage space for.
+ * @return none
+ */
  void setLength(uint8_t length) {
      if(length > this->length) {
          if( StringChars !=NULL)
@@ -49,18 +92,22 @@
          StringChars = (uint16_t *) malloc(sizeof(uint16_t)*length);
      }
      this->length=length;
-
  };
  
+ /**
+ * Function to read unicode charcaters form a uint8t buffer and store them.
+ * @param pointer to a uint8_t buffer
+ */
  void setStringChars(uint16_t *buffer){
      if(buffer!=NULL && StringChars !=NULL)
        for(int i=0;i<this->length;i++)
            StringChars[i]=buffer[i];
  };
  
-  
+  ///number of stored characters
   uint8_t length;
+  ///Pointer to the character storage
   uint16_t *StringChars;
+  ///Pointer to Character storge that are truncated unicode values.
   char *vals;
-    
 };
\ No newline at end of file