serial_nc_tx_auto.py

00001 """
00002 mbed SDK
00003 Copyright (c) 2011-2013 ARM Limited
00004 
00005 Licensed under the Apache License, Version 2.0 (the "License");
00006 you may not use this file except in compliance with the License.
00007 You may obtain a copy of the License at
00008 
00009     http://www.apache.org/licenses/LICENSE-2.0
00010 
00011 Unless required by applicable law or agreed to in writing, software
00012 distributed under the License is distributed on an "AS IS" BASIS,
00013 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014 See the License for the specific language governing permissions and
00015 limitations under the License.
00016 """
00017 
00018 import sys
00019 import uuid
00020 import time
00021 import string
00022 from sys import stdout
00023 
00024 class SerialNCTXTest():
00025 
00026     def test(self, selftest):
00027         selftest.mbed.flush();
00028         # Wait 0.5 seconds to ensure mbed is listening
00029         time.sleep(0.5)
00030 
00031         selftest.mbed.serial_write("S");
00032 
00033         strip_chars = string.whitespace + "\0"
00034 
00035         out_str = selftest.mbed.serial_readline()
00036         selftest.notify("HOST: " + out_str)
00037 
00038         if not out_str:
00039             selftest.notify("HOST: No output detected")
00040             return selftest.RESULT_IO_SERIAL
00041 
00042         out_str_stripped = out_str.strip(strip_chars)
00043 
00044         if out_str_stripped != "TX OK - Expected":
00045             selftest.notify("HOST: Unexpected output. Expected 'TX OK - Expected' but received '%s'" % out_str_stripped)
00046             return selftest.RESULT_FAILURE
00047 
00048         out_str = selftest.mbed.serial_readline()
00049 
00050         # If no characters received, pass the test
00051         if not out_str:
00052             selftest.notify("HOST: No further output detected")
00053             return selftest.RESULT_SUCCESS
00054         else:
00055             out_str_stripped = out_str.strip(strip_chars)
00056 
00057             if out_str_stripped == "TX OK - Unexpected":
00058                 selftest.notify("HOST: Unexpected output returned indicating TX still functioning")
00059             else:
00060                 selftest.notify("HOST: Extraneous output '%s' detected indicating unknown error" % out_str_stripped)
00061 
00062             return selftest.RESULT_FAILURE