-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2010.\r
- \r
- dean [at] fourwalledcubicle [dot] com\r
- www.fourwalledcubicle.com\r
-*/\r
-\r
-/*\r
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
- Permission to use, copy, modify, distribute, and sell this \r
- software and its documentation for any purpose is hereby granted\r
- without fee, provided that the above copyright notice appear in \r
- all copies and that both that the copyright notice and this\r
- permission notice and warranty disclaimer appear in supporting \r
- documentation, and that the name of the author not be used in \r
- advertising or publicity pertaining to distribution of the \r
- software without specific, written prior permission.\r
-\r
- The author disclaim all warranties with regard to this\r
- software, including all implied warranties of merchantability\r
- and fitness. In no event shall the author be liable for any\r
- special, indirect or consequential damages or any damages\r
- whatsoever resulting from loss of use, data or profits, whether\r
- in an action of contract, negligence or other tortious action,\r
- arising out of or in connection with the use or performance of\r
- this software.\r
-*/\r
-\r
-#include "RingBuff.h"\r
-\r
-void Buffer_Initialize(RingBuff_t* const Buffer)\r
-{\r
- BUFF_ATOMIC_BLOCK\r
- {\r
- Buffer->InPtr = (RingBuff_Data_t*)&Buffer->Buffer;\r
- Buffer->OutPtr = (RingBuff_Data_t*)&Buffer->Buffer;\r
- Buffer->Elements = 0;\r
- }\r
-}\r
-\r
-void Buffer_StoreElement(RingBuff_t* const Buffer, RingBuff_Data_t Data)\r
-{\r
- BUFF_ATOMIC_BLOCK\r
- {\r
- #if defined(BUFF_DROPOLD)\r
- if (Buffer->Elements == BUFF_LENGTH)\r
- {\r
- Buffer->OutPtr++;\r
- \r
- if (Buffer->OutPtr == &Buffer->Buffer[BUFF_LENGTH])\r
- Buffer->OutPtr = (RingBuff_Data_t*)&Buffer->Buffer;\r
- }\r
- else\r
- {\r
- Buffer->Elements++;\r
- }\r
- #elif defined(BUFF_DROPNEW)\r
- if (Buffer->Elements == BUFF_LENGTH)\r
- return;\r
- \r
- Buffer->Elements++;\r
- #elif defined(BUFF_NODROPCHECK)\r
- Buffer->Elements++;\r
- #endif\r
- \r
- *(Buffer->InPtr) = Data;\r
- Buffer->InPtr++;\r
- \r
- if (Buffer->InPtr == &Buffer->Buffer[BUFF_LENGTH])\r
- Buffer->InPtr = (RingBuff_Data_t*)&Buffer->Buffer;\r
- }\r
-}\r
-\r
-RingBuff_Data_t Buffer_GetElement(RingBuff_t* const Buffer)\r
-{\r
- RingBuff_Data_t BuffData;\r
- \r
- BUFF_ATOMIC_BLOCK\r
- {\r
-#if defined(BUFF_EMPTYRETURNSZERO)\r
- if (!(Buffer->Elements))\r
- return 0;\r
-#elif !defined(BUFF_NOEMPTYCHECK)\r
- #error No empty buffer check behavior specified.\r
-#endif\r
-\r
- BuffData = *(Buffer->OutPtr);\r
- \r
- Buffer->OutPtr++;\r
- Buffer->Elements--;\r
- \r
- if (Buffer->OutPtr == &Buffer->Buffer[BUFF_LENGTH])\r
- Buffer->OutPtr = (RingBuff_Data_t*)&Buffer->Buffer;\r
- }\r
- \r
- return BuffData;\r
-}\r
-\r
-#if defined(BUFF_USEPEEK)\r
-RingBuff_Data_t Buffer_PeekElement(const RingBuff_t* const Buffer)\r
-{\r
- RingBuff_Data_t BuffData;\r
-\r
- BUFF_ATOMIC_BLOCK\r
- {\r
-#if defined(BUFF_EMPTYRETURNSZERO)\r
- if (!(Buffer->Elements))\r
- return 0;\r
-#elif !defined(BUFF_NOEMPTYCHECK)\r
- #error No empty buffer check behavior specified.\r
-#endif\r
-\r
- BuffData = *(Buffer->OutPtr);\r
- }\r
-\r
- return BuffData;\r
-}\r
-#endif\r
+/*
+ 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.
+*/
+
+#include "RingBuff.h"
+
+void Buffer_Initialize(RingBuff_t* const Buffer)
+{
+ BUFF_ATOMIC_BLOCK
+ {
+ Buffer->InPtr = (RingBuff_Data_t*)&Buffer->Buffer;
+ Buffer->OutPtr = (RingBuff_Data_t*)&Buffer->Buffer;
+ Buffer->Elements = 0;
+ }
+}
+
+void Buffer_StoreElement(RingBuff_t* const Buffer, RingBuff_Data_t Data)
+{
+ BUFF_ATOMIC_BLOCK
+ {
+ #if defined(BUFF_DROPOLD)
+ if (Buffer->Elements == BUFF_LENGTH)
+ {
+ Buffer->OutPtr++;
+
+ if (Buffer->OutPtr == &Buffer->Buffer[BUFF_LENGTH])
+ Buffer->OutPtr = (RingBuff_Data_t*)&Buffer->Buffer;
+ }
+ else
+ {
+ Buffer->Elements++;
+ }
+ #elif defined(BUFF_DROPNEW)
+ if (Buffer->Elements == BUFF_LENGTH)
+ return;
+
+ Buffer->Elements++;
+ #elif defined(BUFF_NODROPCHECK)
+ Buffer->Elements++;
+ #endif
+
+ *(Buffer->InPtr) = Data;
+ Buffer->InPtr++;
+
+ if (Buffer->InPtr == &Buffer->Buffer[BUFF_LENGTH])
+ Buffer->InPtr = (RingBuff_Data_t*)&Buffer->Buffer;
+ }
+}
+
+RingBuff_Data_t Buffer_GetElement(RingBuff_t* const Buffer)
+{
+ RingBuff_Data_t BuffData;
+
+ BUFF_ATOMIC_BLOCK
+ {
+#if defined(BUFF_EMPTYRETURNSZERO)
+ if (!(Buffer->Elements))
+ return 0;
+#elif !defined(BUFF_NOEMPTYCHECK)
+ #error No empty buffer check behavior specified.
+#endif
+
+ BuffData = *(Buffer->OutPtr);
+
+ Buffer->OutPtr++;
+ Buffer->Elements--;
+
+ if (Buffer->OutPtr == &Buffer->Buffer[BUFF_LENGTH])
+ Buffer->OutPtr = (RingBuff_Data_t*)&Buffer->Buffer;
+ }
+
+ return BuffData;
+}
+
+#if defined(BUFF_USEPEEK)
+RingBuff_Data_t Buffer_PeekElement(const RingBuff_t* const Buffer)
+{
+ RingBuff_Data_t BuffData;
+
+ BUFF_ATOMIC_BLOCK
+ {
+#if defined(BUFF_EMPTYRETURNSZERO)
+ if (!(Buffer->Elements))
+ return 0;
+#elif !defined(BUFF_NOEMPTYCHECK)
+ #error No empty buffer check behavior specified.
+#endif
+
+ BuffData = *(Buffer->OutPtr);
+ }
+
+ return BuffData;
+}
+#endif
projects / pub / USBasp.git / blobdiff