Diff: scpi/fifo.h

Revision:

0:d8aca47812e0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scpi/fifo.h	Fri Nov 14 01:07:59 2014 +0000
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 2012-2013 Jan Breuer,
+ *
+ * All Rights Reserved
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file   scpi_fifo.h
+ * @date   Thu Nov 15 10:58:45 UTC 2012
+ * 
+ * @brief  basic FIFO implementation
+ * 
+ * 
+ */
+
+#ifndef SCPI_FIFO_H
+#define	SCPI_FIFO_H
+
+#include "scpi/types.h"
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+
+#define FIFO_SIZE 16
+
+    struct _fifo_t {
+        int16_t wr;
+        int16_t rd;
+        int16_t size;
+        int16_t data[FIFO_SIZE];
+    };
+    typedef struct _fifo_t fifo_t;
+
+    void fifo_init(fifo_t * fifo);
+    void fifo_clear(fifo_t * fifo);
+    scpi_bool_t fifo_add(fifo_t * fifo, int16_t value);
+    scpi_bool_t fifo_remove(fifo_t * fifo, int16_t * value);
+    scpi_bool_t fifo_count(fifo_t * fifo, int16_t * value);
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* SCPI_FIFO_H */