Import Mbed OS hard-float snapshot

TESTS/host_tests/serial_comms.py

@@ -0,0 +1,38 @@
+"""
+Copyright (c) 2019 Arm Limited and affiliates.
+
+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.
+"""
+
+from mbed_host_tests import BaseHostTest
+
+
+MSG_KEY_ECHO_MESSAGE = "echo_message"
+
+
+class SerialComms(BaseHostTest):
+    """Host side test that handles messages sent using serial classes."""
+
+    def __init__(self):
+        """Initialize an object."""
+        super(SerialComms, self).__init__()
+
+    def setup(self):
+        """Register call backs to handle message from the target."""
+        self.register_callback(MSG_KEY_ECHO_MESSAGE, self.cb_echo_message)
+
+    def cb_echo_message(self, key, value, timestamp):
+        """Send back the key and value received."""
+        self.send_kv(key, value)