1 files changed, 127 insertions, 0 deletions
diff --git a/cc3200/util/fifo.c b/cc3200/util/fifo.c
new file mode 100644
index 000000000..73b2b7161
--- /dev/null
+++ b/cc3200/util/fifo.c
@@ -0,0 +1,127 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015 Daniel Campora
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "std.h"
+#include "fifo.h"
+
+
+/******************************************************************************
+ DEFINE PUBLIC FUNCTIONS
+ ******************************************************************************/
+void FIFO_Init (FIFO_t *fifo, unsigned int uiElementsMax,
+                void (*pfElmentPush)(void * const pvFifo, const void * const pvElement),
+                void (*pfElementPop)(void * const pvFifo, void * const pvElement)) {
+    if (fifo) {
+        fifo->uiFirst = 0;
+        fifo->uiLast = uiElementsMax - 1;
+        fifo->uiElementCount = 0;
+        fifo->uiElementsMax = uiElementsMax;
+        fifo->pfElementPush = pfElmentPush;
+        fifo->pfElementPop = pfElementPop;
+    }
+}
+
+bool FIFO_bPushElement (FIFO_t *fifo, const void * const pvElement) {
+    if (!fifo) {
+        return false;
+    }
+    // Check if the queue is full
+    if (true == FIFO_IsFull (fifo)) {
+        return false;
+    }
+
+    // Increment the element count
+    if (fifo->uiElementsMax > fifo->uiElementCount) {
+        fifo->uiElementCount++;
+    }
+    fifo->uiLast++;
+    if (fifo->uiLast == fifo->uiElementsMax) {
+        fifo->uiLast = 0;
+    }
+    // Insert the element into the queue
+    fifo->pfElementPush(fifo, pvElement);
+    return true;
+}
+
+bool FIFO_bPopElement (FIFO_t *fifo, void * const pvElement) {
+    if (!fifo) {
+        return false;
+    }
+    // Check if the queue is empty
+    if (true == FIFO_IsEmpty (fifo)) {
+        return false;
+    }
+
+    // Get the element from the queue
+    fifo->pfElementPop(fifo, pvElement);
+    // Decrement the element count
+    if (fifo->uiElementCount > 0) {
+        fifo->uiElementCount--;
+    }
+    fifo->uiFirst++;
+    if (fifo->uiFirst == fifo->uiElementsMax) {
+        fifo->uiFirst = 0;
+    }
+    return true;
+}
+
+bool FIFO_bPeekElement (FIFO_t *fifo, void * const pvElement) {
+    if (!fifo) {
+        return false;
+    }
+    // Check if the queue is empty
+    if (true == FIFO_IsEmpty (fifo)) {
+        return false;
+    }
+    // Get the element from the queue
+    fifo->pfElementPop(fifo, pvElement);
+    return true;
+}
+
+bool FIFO_IsEmpty (FIFO_t *fifo) {
+    if (fifo) {
+        return ((fifo->uiElementCount == 0) ? true : false);
+    }
+    return false;
+}
+
+bool FIFO_IsFull (FIFO_t *fifo) {
+    if (fifo) {
+        return ((fifo->uiElementCount < fifo->uiElementsMax) ? false : true);
+    }
+    return false;
+}
+
+void FIFO_Flush (FIFO_t *fifo) {
+    if (fifo) {
+        fifo->uiElementCount = 0;
+        fifo->uiFirst = 0;
+        fifo->uiLast = fifo->uiElementsMax - 1;
+    }
+}