Import Mbed OS hard-float snapshot

targets/TARGET_ARM_SSG/TARGET_CM3DS_MPS2/sleep_api.c

@@ -0,0 +1,50 @@
+
+/** \addtogroup hal */
+/** @{*/
+/* mbed Microcontroller Library
+ * Copyright (c) 2018 Arm Limited
+ *
+ * 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.
+ */
+
+#include "platform_devices.h"
+#include "sleep_api.h"
+#include "timer_cmsdk_drv.h"
+
+#if DEVICE_SLEEP
+
+void hal_sleep(void)
+{
+    __WFI();
+}
+
+/* Since there is no power management implemented in CM3DS, Deep Sleep could be
+ * supported only by additional software components, registering and managing
+ * the currently configured IPs. This would also mean a huge implementation
+ * overhead, that is not intended to be added. Therefore, Deep Sleep is almost
+ * identical to Sleep, representing a "Waiting For Interrupt" state, and
+ * disabling the Microsec ticker in addition */
+void hal_deepsleep(void)
+{
+#if DEVICE_USTICKER
+    timer_cmsdk_disable(&USEC_TIMER_DEV);
+#endif
+    __WFI();
+#if DEVICE_USTICKER
+    timer_cmsdk_enable(&USEC_TIMER_DEV);
+#endif
+}
+
+#endif
+
+/**@}*/