From 7e5a5fa85c943651a40b51534982a5660400df1b Mon Sep 17 00:00:00 2001
From: Rene Hopf <renehopf@mac.com>
Date: Thu, 7 Jul 2016 14:45:23 +0200
Subject: [PATCH] pderiv volatile mems

---
 src/comps/pderiv.comp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/comps/pderiv.comp b/src/comps/pderiv.comp
index 6bc4bd1e..55553dd2 100644
--- a/src/comps/pderiv.comp
+++ b/src/comps/pderiv.comp
@@ -8,9 +8,9 @@ HAL_PIN(diff_pos) = 0.0;
 
 #define vel_buf_size  20
 
-MEM(float buf[vel_buf_size]);
-MEM(unsigned int ptr) = 0;
-MEM(float frt_period) = 0.00005;
+MEM(volatile float buf[vel_buf_size]);
+MEM(volatile unsigned int ptr) = 0;
+MEM(volatile float frt_period) = 0.00005;
 
 INIT(
    for(int i = 0; i < vel_buf_size; i++){