From f6616d570865fce92ae7a669611e495038e9c111 Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Thu, 17 Dec 2015 16:11:31 +0000
Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@8616
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 os/hal/src/hal_buffers.c | 86 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 os/hal/src/hal_buffers.c

(limited to 'os/hal/src')

diff --git a/os/hal/src/hal_buffers.c b/os/hal/src/hal_buffers.c
new file mode 100644
index 000000000..62d1dbbb4
--- /dev/null
+++ b/os/hal/src/hal_buffers.c
@@ -0,0 +1,86 @@
+/*
+    ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/**
+ * @file    hal_buffers.c
+ * @brief   I/O Buffers code.
+ *
+ * @addtogroup HAL_BUFFERS
+ * @{
+ */
+
+#include "hal.h"
+
+/*===========================================================================*/
+/* Driver local definitions.                                                 */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   Initializes an I/O buffer object.
+ *
+ * @param[out] iobp     pointer to the @p input_double_buffer_t object
+ * @param[in] bp        pointer to a memory area allocated as buffer
+ * @param[in] size      size of the buffers
+ *
+ * @init
+ */
+void iobInit(io_buffer_t *iobp, uint8_t *bp, size_t size) {
+
+  iobp->buffer = bp;
+  iobp->limit  = bp;
+  iobp->top    = bp + size;
+}
+
+/**
+ * @brief   Initializes an input double buffer object.
+ *
+ * @param[out] idbp     pointer to the @p input_double_buffer_t object
+ * @param[in] b1p       pointer to a memory area allocated as buffer 1
+ * @param[in] b2p       pointer to a memory area allocated as buffer 2
+ * @param[in] size      size of the buffers
+ *
+ * @init
+ */
+void idbObjectInit(input_double_buffer_t *idbp,
+                   uint8_t *b1p, uint8_t *b2p, size_t size,
+                   dbnotify_t infy, void *link) {
+
+  iobInit(&idbp->buffers[0], b1p, size);
+  iobInit(&idbp->buffers[1], b2p, size);
+  idbp->counter = 0;
+  idbp->brdptr  = &idbp->buffers[0];
+  idbp->bwrptr  = &idbp->buffers[0];
+  idbp->notify  = infy;
+  idbp->link    = link;
+}
+
+/** @} */
-- 
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