Diff: Circular_buffer.cpp

Revision:

0:4e9c66d8d35b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Circular_buffer.cpp	Sun Jan 23 04:56:27 2022 +0000
@@ -0,0 +1,68 @@
+#include "Circular_buffer.h"
+
+
+// // Función que resetea el buffer
+int circ_buf_rst(circ_buf_t * cbuf) 
+{
+    int r = -1;
+
+    if(cbuf)
+    {
+        cbuf->head = 0;
+        cbuf->tail = 0;
+        r = 0;
+    }
+
+    return r;
+}
+
+// Función para verificar si el buffer está vacío
+bool circ_buf_empty(circ_buf_t cbuf) // le entra la estructura, no el puntero
+{
+    return (cbuf.head == cbuf.tail); // cabeza igual a cola 
+}
+
+
+// Función para verificar si el buffer está lleno
+bool circ_buf_full(circ_buf_t cbuf)
+{
+    return ((cbuf.head + 1) % cbuf.size) == cbuf.tail;
+}
+
+// Función para agregar datos al buffer circular
+int circ_buf_put(circ_buf_t * cbuf, uint8_t data)
+{
+    int r = -1;
+
+    if(cbuf)
+    {
+        cbuf->buffer[cbuf->head] = data;
+        cbuf->head = (cbuf->head + 1) % cbuf->size;
+
+        if(cbuf->head == cbuf->tail)
+        {
+            cbuf->tail = (cbuf->tail + 1) % cbuf->size;
+        }
+
+        r = 0;
+    }
+
+    return r;
+}
+
+// Función para obtener datos del buffer
+int circ_buf_get(circ_buf_t * cbuf, uint8_t * data)
+{
+    int r = -1;
+
+    if(cbuf && data && !circ_buf_empty(*cbuf))
+    {
+        *data = cbuf->buffer[cbuf->tail];
+        cbuf->tail = (cbuf->tail + 1) % cbuf->size;
+
+        r = 0;
+    }
+
+    return r;
+}
+