Brian Daniels / mbed-tools

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Fork of mbed-tools by Morpheus

host_tests/echo.py@0:4a2e5f0422d6, 2016-03-30 (annotated)

Committer:
screamer
Date:
Wed Mar 30 16:23:44 2016 +0000
Revision:
0:4a2e5f0422d6
Initial revision

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:4a2e5f0422d6 1 """
screamer 0:4a2e5f0422d6 2 mbed SDK
screamer 0:4a2e5f0422d6 3 Copyright (c) 2011-2013 ARM Limited
screamer 0:4a2e5f0422d6 4
screamer 0:4a2e5f0422d6 5 Licensed under the Apache License, Version 2.0 (the "License");
screamer 0:4a2e5f0422d6 6 you may not use this file except in compliance with the License.
screamer 0:4a2e5f0422d6 7 You may obtain a copy of the License at
screamer 0:4a2e5f0422d6 8
screamer 0:4a2e5f0422d6 9 http://www.apache.org/licenses/LICENSE-2.0
screamer 0:4a2e5f0422d6 10
screamer 0:4a2e5f0422d6 11 Unless required by applicable law or agreed to in writing, software
screamer 0:4a2e5f0422d6 12 distributed under the License is distributed on an "AS IS" BASIS,
screamer 0:4a2e5f0422d6 13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
screamer 0:4a2e5f0422d6 14 See the License for the specific language governing permissions and
screamer 0:4a2e5f0422d6 15 limitations under the License.
screamer 0:4a2e5f0422d6 16 """
screamer 0:4a2e5f0422d6 17
screamer 0:4a2e5f0422d6 18 import sys
screamer 0:4a2e5f0422d6 19 import uuid
screamer 0:4a2e5f0422d6 20 from sys import stdout
screamer 0:4a2e5f0422d6 21
screamer 0:4a2e5f0422d6 22 class EchoTest():
screamer 0:4a2e5f0422d6 23
screamer 0:4a2e5f0422d6 24 # Test parameters
screamer 0:4a2e5f0422d6 25 TEST_SERIAL_BAUDRATE = 115200
screamer 0:4a2e5f0422d6 26 TEST_LOOP_COUNT = 50
screamer 0:4a2e5f0422d6 27
screamer 0:4a2e5f0422d6 28 def test(self, selftest):
screamer 0:4a2e5f0422d6 29 """ This host test will use mbed serial port with
screamer 0:4a2e5f0422d6 30 baudrate 115200 to perform echo test on that port.
screamer 0:4a2e5f0422d6 31 """
screamer 0:4a2e5f0422d6 32 # Custom initialization for echo test
screamer 0:4a2e5f0422d6 33 selftest.mbed.init_serial_params(serial_baud=self.TEST_SERIAL_BAUDRATE)
screamer 0:4a2e5f0422d6 34 selftest.mbed.init_serial()
screamer 0:4a2e5f0422d6 35
screamer 0:4a2e5f0422d6 36 # Test function, return True or False to get standard test notification on stdout
screamer 0:4a2e5f0422d6 37 selftest.mbed.flush()
screamer 0:4a2e5f0422d6 38 selftest.notify("HOST: Starting the ECHO test")
screamer 0:4a2e5f0422d6 39 result = True
screamer 0:4a2e5f0422d6 40
screamer 0:4a2e5f0422d6 41 """ This ensures that there are no parasites left in the serial buffer.
screamer 0:4a2e5f0422d6 42 """
screamer 0:4a2e5f0422d6 43 for i in range(0, 2):
screamer 0:4a2e5f0422d6 44 selftest.mbed.serial_write("\n")
screamer 0:4a2e5f0422d6 45 c = selftest.mbed.serial_readline()
screamer 0:4a2e5f0422d6 46
screamer 0:4a2e5f0422d6 47 for i in range(0, self.TEST_LOOP_COUNT):
screamer 0:4a2e5f0422d6 48 TEST_STRING = str(uuid.uuid4()) + "\n"
screamer 0:4a2e5f0422d6 49 selftest.mbed.serial_write(TEST_STRING)
screamer 0:4a2e5f0422d6 50 c = selftest.mbed.serial_readline()
screamer 0:4a2e5f0422d6 51 if c is None:
screamer 0:4a2e5f0422d6 52 return selftest.RESULT_IO_SERIAL
screamer 0:4a2e5f0422d6 53 if c.strip() != TEST_STRING.strip():
screamer 0:4a2e5f0422d6 54 selftest.notify('HOST: "%s" != "%s"'% (c, TEST_STRING))
screamer 0:4a2e5f0422d6 55 result = False
screamer 0:4a2e5f0422d6 56 else:
screamer 0:4a2e5f0422d6 57 sys.stdout.write('.')
screamer 0:4a2e5f0422d6 58 stdout.flush()
screamer 0:4a2e5f0422d6 59 return selftest.RESULT_SUCCESS if result else selftest.RESULT_FAILURE