Diff: mbed-os/tools/host_tests/echo.py

Revision:

0:fbdae7e6d805

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os/tools/host_tests/echo.py	Mon May 14 11:29:06 2018 +0000
@@ -0,0 +1,59 @@
+"""
+mbed SDK
+Copyright (c) 2011-2013 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.
+"""
+
+import sys
+import uuid
+from sys import stdout
+
+class EchoTest():
+
+    # Test parameters
+    TEST_SERIAL_BAUDRATE = 115200
+    TEST_LOOP_COUNT = 50
+
+    def test(self, selftest):
+        """ This host test will use mbed serial port with
+            baudrate 115200 to perform echo test on that port.
+        """
+        # Custom initialization for echo test
+        selftest.mbed.init_serial_params(serial_baud=self.TEST_SERIAL_BAUDRATE)
+        selftest.mbed.init_serial()
+
+        # Test function, return True or False to get standard test notification on stdout
+        selftest.mbed.flush()
+        selftest.notify("HOST: Starting the ECHO test")
+        result = True
+        
+        """ This ensures that there are no parasites left in the serial buffer.
+        """
+        for i in range(0, 2):
+            selftest.mbed.serial_write("\n")
+            c = selftest.mbed.serial_readline()
+            
+        for i in range(0, self.TEST_LOOP_COUNT):
+            TEST_STRING = str(uuid.uuid4()) + "\n"
+            selftest.mbed.serial_write(TEST_STRING)
+            c = selftest.mbed.serial_readline()
+            if c is None:
+                return selftest.RESULT_IO_SERIAL
+            if c.strip() != TEST_STRING.strip():
+                selftest.notify('HOST: "%s" != "%s"'% (c, TEST_STRING))
+                result = False
+            else:
+                sys.stdout.write('.')
+                stdout.flush()
+        return selftest.RESULT_SUCCESS if result else selftest.RESULT_FAILURE