Import Mbed OS hard-float snapshot

drivers/source/PortIn.cpp

@@ -0,0 +1,43 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2019 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 "drivers/PortIn.h"
+
+
+#if DEVICE_PORTIN
+
+#include "platform/mbed_critical.h"
+
+namespace mbed {
+
+PortIn::PortIn(PortName port, int mask)
+{
+    core_util_critical_section_enter();
+    port_init(&_port, port, mask, PIN_INPUT);
+    core_util_critical_section_exit();
+}
+
+void PortIn::mode(PinMode mode)
+{
+    core_util_critical_section_enter();
+    port_mode(&_port, mode);
+    core_util_critical_section_exit();
+}
+
+} // namespace mbed
+
+#endif // #if DEVICE_PORTIN