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module_reset_mbed.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 from __future__ import print_function 00018 00019 from .host_test_plugins import HostTestPluginBase 00020 00021 00022 class HostTestPluginResetMethod_Mbed(HostTestPluginBase): 00023 00024 def safe_sendBreak(self, serial): 00025 """ Wraps serial.sendBreak() to avoid serial::serialposix.py exception on Linux 00026 Traceback (most recent call last): 00027 File "make.py", line 189, in <module> 00028 serial.sendBreak() 00029 File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 511, in sendBreak 00030 termios.tcsendbreak(self.fd, int(duration/0.25)) 00031 error: (32, 'Broken pipe') 00032 """ 00033 result = True 00034 try: 00035 serial.sendBreak() 00036 except: 00037 # In linux a termios.error is raised in sendBreak and in setBreak. 00038 # The following setBreak() is needed to release the reset signal on the target mcu. 00039 try: 00040 serial.setBreak(False) 00041 except: 00042 result = False 00043 return result 00044 00045 # Plugin interface 00046 name = 'HostTestPluginResetMethod_Mbed' 00047 type = 'ResetMethod' 00048 stable = True 00049 capabilities = ['default'] 00050 required_parameters = ['serial'] 00051 00052 def setup(self, *args, **kwargs): 00053 """ Configure plugin, this function should be called before plugin execute() method is used. 00054 """ 00055 return True 00056 00057 def execute(self, capabilitity, *args, **kwargs): 00058 """ Executes capability by name. 00059 Each capability may directly just call some command line 00060 program or execute building pythonic function 00061 """ 00062 result = False 00063 if self.check_parameters(capabilitity, *args, **kwargs) is True: 00064 if capabilitity == 'default': 00065 serial = kwargs['serial'] 00066 result = self.safe_sendBreak(serial) 00067 return result 00068 00069 00070 def load_plugin (): 00071 """ Returns plugin available in this module 00072 """ 00073 return HostTestPluginResetMethod_Mbed()
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