Adding usbserial and usbdfu firmwares (and combined compiled .hex files).

1 files changed, 197 insertions, 0 deletions

diff --git a/firmwares/arduino-usbserial/Lib/LightweightRingBuff.h b/firmwares/arduino-usbserial/Lib/LightweightRingBuff.h
new file mode 100755
index 0000000..fb48c1f
--- /dev/null
+++ b/firmwares/arduino-usbserial/Lib/LightweightRingBuff.h
@@ -0,0 +1,197 @@
+/*

+             LUFA Library

+     Copyright (C) Dean Camera, 2010.

+              

+  dean [at] fourwalledcubicle [dot] com

+      www.fourwalledcubicle.com

+*/

+

+/*

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

+

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

+  software and its documentation for any purpose is hereby granted

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

+  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 

+  software without specific, written prior permission.

+

+  The author disclaim 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

+  whatsoever resulting from loss of use, data or profits, whether

+  in an action of contract, negligence or other tortious action,

+  arising out of or in connection with the use or performance of

+  this software.

+*/

+

+/** \file

+ *

+ *  Ultra lightweight ring buffer, for fast insertion/deletion.

+ */

+ 

+#ifndef _ULW_RING_BUFF_H_

+#define _ULW_RING_BUFF_H_

+

+	/* Includes: */

+		#include <util/atomic.h>

+	

+		#include <stdint.h>

+		#include <stdbool.h>

+

+	/* Defines: */

+		/** Size of each ring buffer, in data elements - must be between 1 and 255. */

+		#define BUFFER_SIZE         128

+		

+		/** Maximum number of data elements to buffer before forcing a flush. 

+		 *  Must be less than BUFFER_SIZE

+		 */

+		#define BUFFER_NEARLY_FULL	96

+		

+		/** Type of data to store into the buffer. */

+		#define RingBuff_Data_t     uint8_t

+

+		/** Datatype which may be used to store the count of data stored in a buffer, retrieved

+		 *  via a call to \ref RingBuffer_GetCount().

+		 */

+		#if (BUFFER_SIZE <= 0xFF)

+			#define RingBuff_Count_t   uint8_t

+		#else

+			#define RingBuff_Count_t   uint16_t

+		#endif

+

+	/* Type Defines: */

+		/** Type define for a new ring buffer object. Buffers should be initialized via a call to

+		 *  \ref RingBuffer_InitBuffer() before use.

+		 */

+		typedef struct

+		{

+			RingBuff_Data_t  Buffer[BUFFER_SIZE]; /**< Internal ring buffer data, referenced by the buffer pointers. */

+			RingBuff_Data_t* In; /**< Current storage location in the circular buffer */

+			RingBuff_Data_t* Out; /**< Current retrieval location in the circular buffer */

+			RingBuff_Count_t Count;

+		} RingBuff_t;

+	

+	/* Inline Functions: */

+		/** Initializes a ring buffer ready for use. Buffers must be initialized via this function

+		 *  before any operations are called upon them. Already initialized buffers may be reset

+		 *  by re-initializing them using this function.

+		 *

+		 *  \param[out] Buffer  Pointer to a ring buffer structure to initialize

+		 */

+		static inline void RingBuffer_InitBuffer(RingBuff_t* const Buffer)

+		{

+			ATOMIC_BLOCK(ATOMIC_RESTORESTATE)

+			{

+				Buffer->In  = Buffer->Buffer;

+				Buffer->Out = Buffer->Buffer;

+			}

+		}

+		

+		/** Retrieves the minimum number of bytes stored in a particular buffer. This value is computed

+		 *  by entering an atomic lock on the buffer while the IN and OUT locations are fetched, so that

+		 *  the buffer cannot be modified while the computation takes place. This value should be cached

+		 *  when reading out the contents of the buffer, so that as small a time as possible is spent

+		 *  in an atomic lock.

+		 *

+		 *  \note The value returned by this function is guaranteed to only be the minimum number of bytes

+		 *        stored in the given buffer; this value may change as other threads write new data and so

+		 *        the returned number should be used only to determine how many successive reads may safely

+		 *        be performed on the buffer.

+		 *

+		 *  \param[in] Buffer  Pointer to a ring buffer structure whose count is to be computed

+		 */

+		static inline RingBuff_Count_t RingBuffer_GetCount(RingBuff_t* const Buffer)

+		{

+			RingBuff_Count_t Count;

+			

+			ATOMIC_BLOCK(ATOMIC_RESTORESTATE)

+			{

+				Count = Buffer->Count;

+			}

+			

+			return Count;

+		}

+		

+		/** Atomically determines if the specified ring buffer contains any free space. This should

+		 *  be tested before storing data to the buffer, to ensure that no data is lost due to a

+		 *  buffer overrun.

+		 *

+		 *  \param[in,out] Buffer  Pointer to a ring buffer structure to insert into

+		 *

+		 *  \return Boolean true if the buffer contains no free space, false otherwise

+		 */		 

+		static inline bool RingBuffer_IsFull(RingBuff_t* const Buffer)

+		{

+			return (RingBuffer_GetCount(Buffer) == BUFFER_SIZE);

+		}

+

+		/** Atomically determines if the specified ring buffer contains any data. This should

+		 *  be tested before removing data from the buffer, to ensure that the buffer does not

+		 *  underflow.

+		 *

+		 *  If the data is to be removed in a loop, store the total number of bytes stored in the

+		 *  buffer (via a call to the \ref RingBuffer_GetCount() function) in a temporary variable

+		 *  to reduce the time spent in atomicity locks.

+		 *

+		 *  \param[in,out] Buffer  Pointer to a ring buffer structure to insert into

+		 *

+		 *  \return Boolean true if the buffer contains no free space, false otherwise

+		 */		 

+		static inline bool RingBuffer_IsEmpty(RingBuff_t* const Buffer)

+		{

+			return (RingBuffer_GetCount(Buffer) == 0);

+		}

+

+		/** Inserts an element into the ring buffer.

+		 *

+		 *  \note Only one execution thread (main program thread or an ISR) may insert into a single buffer

+		 *        otherwise data corruption may occur. Insertion and removal may occur from different execution

+		 *        threads.

+		 *

+		 *  \param[in,out] Buffer  Pointer to a ring buffer structure to insert into

+		 *  \param[in]     Data    Data element to insert into the buffer

+		 */

+		static inline void RingBuffer_Insert(RingBuff_t* const Buffer,

+		                                     const RingBuff_Data_t Data)

+		{

+			*Buffer->In = Data;

+			

+			if (++Buffer->In == &Buffer->Buffer[BUFFER_SIZE])

+			  Buffer->In = Buffer->Buffer;

+

+			ATOMIC_BLOCK(ATOMIC_RESTORESTATE)

+			{

+				Buffer->Count++;

+			}

+		}

+

+		/** Removes an element from the ring buffer.

+		 *

+		 *  \note Only one execution thread (main program thread or an ISR) may remove from a single buffer

+		 *        otherwise data corruption may occur. Insertion and removal may occur from different execution

+		 *        threads.

+		 *

+		 *  \param[in,out] Buffer  Pointer to a ring buffer structure to retrieve from

+		 *

+		 *  \return Next data element stored in the buffer

+		 */

+		static inline RingBuff_Data_t RingBuffer_Remove(RingBuff_t* const Buffer)

+		{

+			RingBuff_Data_t Data = *Buffer->Out;

+			

+			if (++Buffer->Out == &Buffer->Buffer[BUFFER_SIZE])

+			  Buffer->Out = Buffer->Buffer;

+

+			ATOMIC_BLOCK(ATOMIC_RESTORESTATE)

+			{

+				Buffer->Count--;

+			}

+			

+			return Data;

+		}

+

+#endif