Merge pull request #32 from The-42/fix-xmega-usb-prescaler

[pub/USBasp.git] / Projects / Magstripe / Lib / CircularBitBuffer.c

diff --git a/Projects/Magstripe/Lib/CircularBitBuffer.c b/Projects/Magstripe/Lib/CircularBitBuffer.c
index 8be527b..fbd511b 100644 (file)
--- a/Projects/Magstripe/Lib/CircularBitBuffer.c
+++ b/Projects/Magstripe/Lib/CircularBitBuffer.c
@@ -1,25 +1,25 @@
 /*
              LUFA Library
 /*
              LUFA Library

-     Copyright (C) Dean Camera, 2010.
-              
+     Copyright (C) Dean Camera, 2014.
+

   dean [at] fourwalledcubicle [dot] com
   dean [at] fourwalledcubicle [dot] com

-      www.fourwalledcubicle.com
+           www.lufa-lib.org

 */
 
 /*
   Copyright 2010  Denver Gingerich (denver [at] ossguy [dot] com)
 */
 
 /*
   Copyright 2010  Denver Gingerich (denver [at] ossguy [dot] com)

-  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2014  Dean Camera (dean [at] fourwalledcubicle [dot] com)

 
 

-  Permission to use, copy, modify, distribute, and sell this 
+  Permission to use, copy, modify, distribute, and sell this

   software and its documentation for any purpose is hereby granted
   software and its documentation for any purpose is hereby granted

-  without fee, provided that the above copyright notice appear in 
+  without fee, provided that the above copyright notice appear in

   all copies and that both that the copyright notice and this
   all copies and that both that the copyright notice and this

-  permission notice and warranty disclaimer appear in supporting 
-  documentation, and that the name of the author not be used in 
-  advertising or publicity pertaining to distribution of the 
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the

   software without specific, written prior permission.
 
   software without specific, written prior permission.
 

-  The author disclaim all warranties with regard to this
+  The author disclaims all warranties with regard to this

   software, including all implied warranties of merchantability
   and fitness.  In no event shall the author be liable for any
   special, indirect or consequential damages or any damages
   software, including all implied warranties of merchantability
   and fitness.  In no event shall the author be liable for any
   special, indirect or consequential damages or any damages


@@ -41,7 +41,7 @@ void BitBuffer_Init(BitBuffer_t* const Buffer)
 {
        /* Reset the number of stored bits in the buffer */
        Buffer->Elements        = 0;
 {
        /* Reset the number of stored bits in the buffer */
        Buffer->Elements        = 0;

-       
+

        /* Reset the data in and out pointer structures in the buffer to the first buffer bit */
        Buffer->In.CurrentByte  = Buffer->Data;
        Buffer->In.ByteMask     = (1 << 0);
        /* Reset the data in and out pointer structures in the buffer to the first buffer bit */
        Buffer->In.CurrentByte  = Buffer->Data;
        Buffer->In.ByteMask     = (1 << 0);


@@ -50,15 +50,16 @@ void BitBuffer_Init(BitBuffer_t* const Buffer)
 }
 
 /** Function to store the given bit into the given bit buffer. */
 }
 
 /** Function to store the given bit into the given bit buffer. */

-void BitBuffer_StoreNextBit(BitBuffer_t* const Buffer, const bool Bit)
+void BitBuffer_StoreNextBit(BitBuffer_t* const Buffer,
+                            const bool Bit)

 {
        /* If the bit to store is true, set the next bit in the buffer */
        if (Bit)
          *Buffer->In.CurrentByte |= Buffer->In.ByteMask;
 {
        /* If the bit to store is true, set the next bit in the buffer */
        if (Bit)
          *Buffer->In.CurrentByte |= Buffer->In.ByteMask;

-       
+

        /* Increment the number of stored bits in the buffer counter */
        Buffer->Elements++;
        /* Increment the number of stored bits in the buffer counter */
        Buffer->Elements++;

-       
+

        /* Check if the current buffer byte is full of stored bits */
        if (Buffer->In.ByteMask == (1 << 7))
        {
        /* Check if the current buffer byte is full of stored bits */
        if (Buffer->In.ByteMask == (1 << 7))
        {


@@ -67,8 +68,8 @@ void BitBuffer_StoreNextBit(BitBuffer_t* const Buffer, const bool Bit)
                  Buffer->In.CurrentByte++;
                else
                  Buffer->In.CurrentByte = Buffer->Data;
                  Buffer->In.CurrentByte++;
                else
                  Buffer->In.CurrentByte = Buffer->Data;

-                 
-               /* Reset the storage bit mask in the current buffer byte to the first bit */            
+
+               /* Reset the storage bit mask in the current buffer byte to the first bit */

                Buffer->In.ByteMask = (1 << 0);
        }
        else
                Buffer->In.ByteMask = (1 << 0);
        }
        else


@@ -80,7 +81,7 @@ void BitBuffer_StoreNextBit(BitBuffer_t* const Buffer, const bool Bit)
 
 /** Function to retrieve the next bit stored in the given bit buffer. */
 bool BitBuffer_GetNextBit(BitBuffer_t* const Buffer)
 
 /** Function to retrieve the next bit stored in the given bit buffer. */
 bool BitBuffer_GetNextBit(BitBuffer_t* const Buffer)

-{      
+{

        /* Retrieve the value of the next bit stored in the buffer */
        bool Bit = ((*Buffer->Out.CurrentByte & Buffer->Out.ByteMask) != 0);
 
        /* Retrieve the value of the next bit stored in the buffer */
        bool Bit = ((*Buffer->Out.CurrentByte & Buffer->Out.ByteMask) != 0);
 


@@ -89,17 +90,17 @@ bool BitBuffer_GetNextBit(BitBuffer_t* const Buffer)
 
        /* Decrement the number of stored bits in the buffer counter */
        Buffer->Elements--;
 
        /* Decrement the number of stored bits in the buffer counter */
        Buffer->Elements--;

-       
-       /* Check if the current buffer byte is empty of stored bits */  
+
+       /* Check if the current buffer byte is empty of stored bits */

        if (Buffer->Out.ByteMask == (1 << 7))
        {
                /* Check if the end of the buffer has been reached, if so reset to start of buffer, otherwise advance to next bit */
                if (Buffer->Out.CurrentByte != &Buffer->Data[sizeof(Buffer->Data) - 1])
                  Buffer->Out.CurrentByte++;
                else
        if (Buffer->Out.ByteMask == (1 << 7))
        {
                /* Check if the end of the buffer has been reached, if so reset to start of buffer, otherwise advance to next bit */
                if (Buffer->Out.CurrentByte != &Buffer->Data[sizeof(Buffer->Data) - 1])
                  Buffer->Out.CurrentByte++;
                else

-                 Buffer->Out.CurrentByte = Buffer->Data;               
-               
-               /* Reset the retrieval bit mask in the current buffer byte to the first bit */          
+                 Buffer->Out.CurrentByte = Buffer->Data;
+
+               /* Reset the retrieval bit mask in the current buffer byte to the first bit */

                Buffer->Out.ByteMask = (1 << 0);
        }
        else
                Buffer->Out.ByteMask = (1 << 0);
        }
        else


@@ -111,3 +112,4 @@ bool BitBuffer_GetNextBit(BitBuffer_t* const Buffer)
        /* Return the retrieved bit from the buffer */
        return Bit;
 }
        /* Return the retrieved bit from the buffer */
        return Bit;
 }

+