+/*\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
+/** \file\r
+ *\r
+ * Ultra lightweight ring buffer, for fast insertion/deletion.\r
+ */\r
+ \r
+#ifndef _ULW_RING_BUFF_H_\r
+#define _ULW_RING_BUFF_H_\r
+\r
+ /* Includes: */\r
+ #include <stdint.h>\r
+ #include <stdbool.h>\r
+\r
+ /* Defines: */\r
+ /** Size of each ring buffer, in bytes */\r
+ #define BUFFER_SIZE 128\r
+ \r
+ /** Type of data to store into the buffer */\r
+ #define RingBuff_Data_t uint8_t\r
+\r
+ /* Type Defines: */\r
+ typedef struct\r
+ {\r
+ RingBuff_Data_t Buffer[BUFFER_SIZE];\r
+ RingBuff_Data_t* In;\r
+ RingBuff_Data_t* Out;\r
+ } RingBuff_t;\r
+ \r
+ /* Inline Functions: */\r
+ static inline void RingBuffer_InitBuffer(RingBuff_t* const Buffer)\r
+ {\r
+ Buffer->In = Buffer->Buffer;\r
+ Buffer->Out = Buffer->Buffer; \r
+ }\r
+ \r
+ static inline void RingBuffer_Insert(RingBuff_t* const Buffer, RingBuff_Data_t Data)\r
+ {\r
+ *Buffer->In = Data;\r
+ \r
+ if (++Buffer->In == &Buffer->Buffer[BUFFER_SIZE])\r
+ Buffer->In = Buffer->Buffer;\r
+ }\r
+\r
+ static inline RingBuff_Data_t RingBuffer_Remove(RingBuff_t* const Buffer)\r
+ {\r
+ RingBuff_Data_t Data = *Buffer->Out;\r
+ \r
+ if (++Buffer->Out == &Buffer->Buffer[BUFFER_SIZE])\r
+ Buffer->Out = Buffer->Buffer;\r
+ \r
+ return Data;\r
+ }\r
+\r
+ static inline bool RingBuffer_Empty(RingBuff_t* const Buffer)\r
+ {\r
+ return (Buffer->In == Buffer->Out);\r
+ }\r
+\r
+#endif\r
+
\ No newline at end of file
projects / pub / USBasp.git / commitdiff