Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

tools/host_tests/echo.py@0:f269e3021894, 2016-10-23 (annotated)

Committer:
elessair
Date:
Sun Oct 23 15:10:02 2016 +0000
Revision:
0:f269e3021894
Initial commit

Who changed what in which revision?

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elessair 0:f269e3021894 1 """
elessair 0:f269e3021894 2 mbed SDK
elessair 0:f269e3021894 3 Copyright (c) 2011-2013 ARM Limited
elessair 0:f269e3021894 4
elessair 0:f269e3021894 5 Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:f269e3021894 6 you may not use this file except in compliance with the License.
elessair 0:f269e3021894 7 You may obtain a copy of the License at
elessair 0:f269e3021894 8
elessair 0:f269e3021894 9 http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 10
elessair 0:f269e3021894 11 Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 12 distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:f269e3021894 13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 14 See the License for the specific language governing permissions and
elessair 0:f269e3021894 15 limitations under the License.
elessair 0:f269e3021894 16 """
elessair 0:f269e3021894 17
elessair 0:f269e3021894 18 import sys
elessair 0:f269e3021894 19 import uuid
elessair 0:f269e3021894 20 from sys import stdout
elessair 0:f269e3021894 21
elessair 0:f269e3021894 22 class EchoTest():
elessair 0:f269e3021894 23
elessair 0:f269e3021894 24 # Test parameters
elessair 0:f269e3021894 25 TEST_SERIAL_BAUDRATE = 115200
elessair 0:f269e3021894 26 TEST_LOOP_COUNT = 50
elessair 0:f269e3021894 27
elessair 0:f269e3021894 28 def test(self, selftest):
elessair 0:f269e3021894 29 """ This host test will use mbed serial port with
elessair 0:f269e3021894 30 baudrate 115200 to perform echo test on that port.
elessair 0:f269e3021894 31 """
elessair 0:f269e3021894 32 # Custom initialization for echo test
elessair 0:f269e3021894 33 selftest.mbed.init_serial_params(serial_baud=self.TEST_SERIAL_BAUDRATE)
elessair 0:f269e3021894 34 selftest.mbed.init_serial()
elessair 0:f269e3021894 35
elessair 0:f269e3021894 36 # Test function, return True or False to get standard test notification on stdout
elessair 0:f269e3021894 37 selftest.mbed.flush()
elessair 0:f269e3021894 38 selftest.notify("HOST: Starting the ECHO test")
elessair 0:f269e3021894 39 result = True
elessair 0:f269e3021894 40
elessair 0:f269e3021894 41 """ This ensures that there are no parasites left in the serial buffer.
elessair 0:f269e3021894 42 """
elessair 0:f269e3021894 43 for i in range(0, 2):
elessair 0:f269e3021894 44 selftest.mbed.serial_write("\n")
elessair 0:f269e3021894 45 c = selftest.mbed.serial_readline()
elessair 0:f269e3021894 46
elessair 0:f269e3021894 47 for i in range(0, self.TEST_LOOP_COUNT):
elessair 0:f269e3021894 48 TEST_STRING = str(uuid.uuid4()) + "\n"
elessair 0:f269e3021894 49 selftest.mbed.serial_write(TEST_STRING)
elessair 0:f269e3021894 50 c = selftest.mbed.serial_readline()
elessair 0:f269e3021894 51 if c is None:
elessair 0:f269e3021894 52 return selftest.RESULT_IO_SERIAL
elessair 0:f269e3021894 53 if c.strip() != TEST_STRING.strip():
elessair 0:f269e3021894 54 selftest.notify('HOST: "%s" != "%s"'% (c, TEST_STRING))
elessair 0:f269e3021894 55 result = False
elessair 0:f269e3021894 56 else:
elessair 0:f269e3021894 57 sys.stdout.write('.')
elessair 0:f269e3021894 58 stdout.flush()
elessair 0:f269e3021894 59 return selftest.RESULT_SUCCESS if result else selftest.RESULT_FAILURE