From da46a8fab285649c0ea21c63c897680da867daef Mon Sep 17 00:00:00 2001
From: Marko Car <Marko Car>
Date: Wed, 24 May 2017 13:36:16 +0200
Subject: [PATCH 1/2] fixed usage of atomic operation lib for armcc compiler,
 added conditional compilation

---
 .../driver/include/uavcan_stm32/thread.hpp     | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/libuavcan_drivers/stm32/driver/include/uavcan_stm32/thread.hpp b/libuavcan_drivers/stm32/driver/include/uavcan_stm32/thread.hpp
index fe74e50357..6557cfee13 100644
--- a/libuavcan_drivers/stm32/driver/include/uavcan_stm32/thread.hpp
+++ b/libuavcan_drivers/stm32/driver/include/uavcan_stm32/thread.hpp
@@ -142,17 +142,29 @@ public:
     {
         (void)duration;
         bool lready = ready;
-        return __atomic_exchange_n (&lready, false, __ATOMIC_SEQ_CST);
+				#if defined ( __CC_ARM   )
+						return __sync_lock_test_and_set(&lready, false);
+				#elif defined   (  __GNUC__  )
+						return __atomic_exchange_n (&lready, false, __ATOMIC_SEQ_CST);
+				#endif
     }
 
     void signal()
     {
-        __atomic_store_n (&ready, true, __ATOMIC_SEQ_CST);
+				#if defined ( __CC_ARM   )
+						__sync_lock_release(&ready);
+				#elif defined   (  __GNUC__  )
+						__atomic_store_n (&ready, true, __ATOMIC_SEQ_CST);
+				#endif
     }
 
     void signalFromInterrupt()
     {
-        __atomic_store_n (&ready, true, __ATOMIC_SEQ_CST);
+				#if defined ( __CC_ARM   )
+						__sync_lock_release(&ready);
+				#elif defined   (  __GNUC__  )
+						__atomic_store_n (&ready, true, __ATOMIC_SEQ_CST);
+				#endif
     }
 };
 

From fab231d5dbdccb8b74e31f4e2e9b6c1a8493a87f Mon Sep 17 00:00:00 2001
From: Marko Car <Marko Car>
Date: Wed, 24 May 2017 17:01:49 +0200
Subject: [PATCH 2/2] changed tabs into spaces, added error if compiler is not
 supported

---
 .../driver/include/uavcan_stm32/thread.hpp    | 36 +++++++++++--------
 1 file changed, 21 insertions(+), 15 deletions(-)

diff --git a/libuavcan_drivers/stm32/driver/include/uavcan_stm32/thread.hpp b/libuavcan_drivers/stm32/driver/include/uavcan_stm32/thread.hpp
index 6557cfee13..b2eac2a65c 100644
--- a/libuavcan_drivers/stm32/driver/include/uavcan_stm32/thread.hpp
+++ b/libuavcan_drivers/stm32/driver/include/uavcan_stm32/thread.hpp
@@ -142,29 +142,35 @@ public:
     {
         (void)duration;
         bool lready = ready;
-				#if defined ( __CC_ARM   )
-						return __sync_lock_test_and_set(&lready, false);
-				#elif defined   (  __GNUC__  )
-						return __atomic_exchange_n (&lready, false, __ATOMIC_SEQ_CST);
-				#endif
+        #if defined ( __CC_ARM   )
+            return __sync_lock_test_and_set(&lready, false);
+        #elif defined   (  __GNUC__  )
+            return __atomic_exchange_n (&lready, false, __ATOMIC_SEQ_CST);
+        #else
+        # error "This compiler is not supported"
+        #endif
     }
 
     void signal()
     {
-				#if defined ( __CC_ARM   )
-						__sync_lock_release(&ready);
-				#elif defined   (  __GNUC__  )
-						__atomic_store_n (&ready, true, __ATOMIC_SEQ_CST);
-				#endif
+        #if defined ( __CC_ARM   )
+            __sync_lock_release(&ready);
+        #elif defined   (  __GNUC__  )
+            __atomic_store_n (&ready, true, __ATOMIC_SEQ_CST);
+        #else
+        # error "This compiler is not supported"
+        #endif
     }
 
     void signalFromInterrupt()
     {
-				#if defined ( __CC_ARM   )
-						__sync_lock_release(&ready);
-				#elif defined   (  __GNUC__  )
-						__atomic_store_n (&ready, true, __ATOMIC_SEQ_CST);
-				#endif
+        #if defined ( __CC_ARM   )
+            __sync_lock_release(&ready);
+        #elif defined   (  __GNUC__  )
+            __atomic_store_n (&ready, true, __ATOMIC_SEQ_CST);
+        #else
+        # error "This compiler is not supported"
+        #endif
     }
 };