mirror of https://github.com/ARMmbed/mbed-os.git
60 lines
2.0 KiB
Python
60 lines
2.0 KiB
Python
"""
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mbed SDK
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Copyright (c) 2011-2013 ARM Limited
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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"""
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import sys
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import uuid
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from sys import stdout
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class EchoTest():
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# Test parameters
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TEST_SERIAL_BAUDRATE = 115200
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TEST_LOOP_COUNT = 50
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def test(self, selftest):
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""" This host test will use mbed serial port with
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baudrate 115200 to perform echo test on that port.
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"""
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# Custom initialization for echo test
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selftest.mbed.init_serial_params(serial_baud=self.TEST_SERIAL_BAUDRATE)
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selftest.mbed.init_serial()
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# Test function, return True or False to get standard test notification on stdout
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selftest.mbed.flush()
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selftest.notify("HOST: Starting the ECHO test")
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result = True
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""" This ensures that there are no parasites left in the serial buffer.
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"""
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for i in range(0, 2):
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selftest.mbed.serial_write("\n")
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c = selftest.mbed.serial_readline()
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for i in range(0, self.TEST_LOOP_COUNT):
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TEST_STRING = str(uuid.uuid4()) + "\n"
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selftest.mbed.serial_write(TEST_STRING)
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c = selftest.mbed.serial_readline()
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if c is None:
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return selftest.RESULT_IO_SERIAL
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if c.strip() != TEST_STRING.strip():
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selftest.notify('HOST: "%s" != "%s"'% (c, TEST_STRING))
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result = False
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else:
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sys.stdout.write('.')
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stdout.flush()
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return selftest.RESULT_SUCCESS if result else selftest.RESULT_FAILURE
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