module_reset_mps2.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 import os
00020 from time import sleep
00021 from .host_test_plugins import HostTestPluginBase
00022 
00023 # Note: This plugin is not fully functional, needs improvements
00024 
00025 class HostTestPluginResetMethod_MPS2 (HostTestPluginBase):
00026     """ Plugin used to reset ARM_MPS2 platform
00027     Supports:
00028          reboot.txt   - startup from standby state, reboots when in run mode.
00029          shutdown.txt - shutdown from run mode.
00030          reset.txt    - reset FPGA during run mode.
00031     """
00032     def touch_file (self, file):
00033         """ Touch file and set timestamp to items
00034         """
00035         tfile = file+'.tmp'
00036         fhandle = open(tfile, 'a')
00037         try:
00038             fhandle.close()
00039         finally:
00040             os.rename(tfile, file)
00041             return True
00042 
00043     # Plugin interface
00044     name = 'HostTestPluginResetMethod_MPS2'
00045     type = 'ResetMethod'
00046     capabilities = ['mps2-reboot', 'mps2-reset']
00047     required_parameters = ['disk']
00048 
00049     def setup (self, *args, **kwargs):
00050         """ Prepare / configure plugin to work.
00051             This method can receive plugin specific parameters by kwargs and
00052             ignore other parameters which may affect other plugins.
00053         """
00054         return True
00055 
00056     def execute (self, capabilitity, *args, **kwargs):
00057         """ Executes capability by name.
00058             Each capability may directly just call some command line
00059             program or execute building pythonic function
00060         """
00061         return True
00062         result = False
00063         if self.check_parameters(capabilitity, *args, **kwargs) is True:
00064             disk = kwargs['disk']
00065             
00066             if capabilitity == 'mps2-reboot' and self.touch_file (disk + 'reboot.txt'):
00067                 sleep(20)
00068                 result = True
00069 
00070             elif capabilitity == 'mps2-reset' and self.touch_file (disk + 'reboot.txt'):
00071                 sleep(20)
00072                 result = True
00073 
00074         return result
00075 
00076 def load_plugin ():
00077     """ Returns plugin available in this module
00078     """
00079     return HostTestPluginResetMethod_MPS2()