From 990090a4cc9070837d31e66b58d40f0c3d038741 Mon Sep 17 00:00:00 2001
From: Yuval Adam <yuv.adm@gmail.com>
Date: Sun, 16 Mar 2014 14:41:11 +0200
Subject: Add usblib and utils

---
 utils/ringbuf.h | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 utils/ringbuf.h

(limited to 'utils/ringbuf.h')

diff --git a/utils/ringbuf.h b/utils/ringbuf.h
new file mode 100644
index 0000000..9b1ff56
--- /dev/null
+++ b/utils/ringbuf.h
@@ -0,0 +1,105 @@
+//*****************************************************************************
+//
+// ringbuf.h - Defines and Macros for the ring buffer utilities.
+//
+// Copyright (c) 2008-2014 Texas Instruments Incorporated.  All rights reserved.
+// Software License Agreement
+// 
+// Texas Instruments (TI) is supplying this software for use solely and
+// exclusively on TI's microcontroller products. The software is owned by
+// TI and/or its suppliers, and is protected under applicable copyright
+// laws. You may not combine this software with "viral" open-source
+// software in order to form a larger program.
+// 
+// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
+// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
+// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
+// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
+// DAMAGES, FOR ANY REASON WHATSOEVER.
+// 
+// This is part of revision 2.1.0.12573 of the Tiva Utility Library.
+//
+//*****************************************************************************
+
+#ifndef __RINGBUF_H__
+#define __RINGBUF_H__
+
+//*****************************************************************************
+//
+// If building with a C++ compiler, make all of the definitions in this header
+// have a C binding.
+//
+//*****************************************************************************
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+//*****************************************************************************
+//
+// The structure used for encapsulating all the items associated with a
+// ring buffer.
+//
+//*****************************************************************************
+typedef struct
+{
+    //
+    // The ring buffer size.
+    //
+    uint32_t ui32Size;
+
+    //
+    // The ring buffer write index.
+    //
+    volatile uint32_t ui32WriteIndex;
+
+    //
+    // The ring buffer read index.
+    //
+    volatile uint32_t ui32ReadIndex;
+
+    //
+    // The ring buffer.
+    //
+    uint8_t *pui8Buf;
+
+}
+tRingBufObject;
+
+//*****************************************************************************
+//
+// API Function prototypes
+//
+//*****************************************************************************
+extern bool RingBufFull(tRingBufObject *psRingBuf);
+extern bool RingBufEmpty(tRingBufObject *psRingBuf);
+extern void RingBufFlush(tRingBufObject *psRingBuf);
+extern uint32_t RingBufUsed(tRingBufObject *psRingBuf);
+extern uint32_t RingBufFree(tRingBufObject *psRingBuf);
+extern uint32_t RingBufContigUsed(tRingBufObject *psRingBuf);
+extern uint32_t RingBufContigFree(tRingBufObject *psRingBuf);
+extern uint32_t RingBufSize(tRingBufObject *psRingBuf);
+extern uint8_t RingBufReadOne(tRingBufObject *psRingBuf);
+extern void RingBufRead(tRingBufObject *psRingBuf, uint8_t *pui8Data,
+                        uint32_t ui32Length);
+extern void RingBufWriteOne(tRingBufObject *psRingBuf, uint8_t ui8Data);
+extern void RingBufWrite(tRingBufObject *psRingBuf, uint8_t *pui8Data,
+                         uint32_t ui32Length);
+extern void RingBufAdvanceWrite(tRingBufObject *psRingBuf,
+                                uint32_t ui32NumBytes);
+extern void RingBufAdvanceRead(tRingBufObject *psRingBuf,
+                                uint32_t ui32NumBytes);
+extern void RingBufInit(tRingBufObject *psRingBuf, uint8_t *pui8Buf,
+                        uint32_t ui32Size);
+
+//*****************************************************************************
+//
+// Mark the end of the C bindings section for C++ compilers.
+//
+//*****************************************************************************
+#ifdef __cplusplus
+}
+#endif
+
+#endif //  __RINGBUF_H__
-- 
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