STM32: Added basic OS abstraction (ChibiOS event), test app for this, minor changes in Makefile

libuavcan_drivers/stm32/driver/src/uc_stm32_thread.cpp

@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2014 Pavel Kirienko <pavel.kirienko@gmail.com>
+ */
+
+#include <uavcan_stm32/thread.hpp>
+
+namespace uavcan_stm32
+{
+
+#if UAVCAN_STM32_CHIBIOS
+
+bool Event::wait(uavcan::MonotonicDuration duration)
+{
+    msg_t ret = msg_t();
+    if (duration.isZero())
+    {
+        sem_.waitTimeout(TIME_IMMEDIATE);
+    }
+    else
+    {
+        sem_.waitTimeout(US2ST(duration.toUSec()));
+    }
+    return ret == RDY_OK;
+}
+
+void Event::signal()
+{
+    sem_.signal();
+}
+
+void Event::signalFromInterrupt()
+{
+    sem_.signalI();
+}
+
+#endif
+
+}