From 9d3a9c20a86676f8edb57777bdb1d024ddca252a Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Wed, 7 Jan 2015 08:09:29 +1100
Subject: [PATCH] HAL_VRBrain: use common RingBuffer.h

---
 libraries/AP_HAL_VRBRAIN/UARTDriver.cpp | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/libraries/AP_HAL_VRBRAIN/UARTDriver.cpp b/libraries/AP_HAL_VRBRAIN/UARTDriver.cpp
index 4b9cfcff9e..86df7c1cb7 100644
--- a/libraries/AP_HAL_VRBRAIN/UARTDriver.cpp
+++ b/libraries/AP_HAL_VRBRAIN/UARTDriver.cpp
@@ -16,6 +16,7 @@
 #include <termios.h>
 #include <drivers/drv_hrt.h>
 #include <assert.h>
+#include "../AP_HAL/utility/RingBuffer.h"
 
 using namespace VRBRAIN;
 
@@ -234,15 +235,6 @@ void VRBRAINUARTDriver::set_blocking_writes(bool blocking)
 
 bool VRBRAINUARTDriver::tx_pending() { return false; }
 
-/*
-  buffer handling macros
- */
-#define BUF_AVAILABLE(buf) ((buf##_head > (_tail=buf##_tail))? (buf##_size - buf##_head) + _tail: _tail - buf##_head)
-#define BUF_SPACE(buf) (((_head=buf##_head) > buf##_tail)?(_head - buf##_tail) - 1:((buf##_size - buf##_tail) + _head) - 1)
-#define BUF_EMPTY(buf) (buf##_head == buf##_tail)
-#define BUF_ADVANCETAIL(buf, n) buf##_tail = (buf##_tail + n) % buf##_size
-#define BUF_ADVANCEHEAD(buf, n) buf##_head = (buf##_head + n) % buf##_size
-
 /*
   return number of bytes available to be read from the buffer
  */