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- """
- 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
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