mirror of https://github.com/ARMmbed/mbed-os.git
277 lines
8.7 KiB
Python
277 lines
8.7 KiB
Python
"""
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mbed SDK
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Copyright (c) 2011-2013 ARM Limited
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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"""
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# Check if 'serial' module is installed
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try:
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from serial import Serial
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except ImportError, e:
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print "Error: Can't import 'serial' module: %s"% e
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exit(-1)
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import os
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from sys import stdout
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from time import sleep, time
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from optparse import OptionParser
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import host_tests_plugins
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# This is a little tricky. We need to add upper directory to path so
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# we can find packages we want from the same level as other files do
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import sys
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sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '../..')))
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class Mbed:
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""" Base class for a host driven test
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"""
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def __init__(self):
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parser = OptionParser()
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parser.add_option("-m", "--micro",
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dest="micro",
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help="The target microcontroller",
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metavar="MICRO")
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parser.add_option("-p", "--port",
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dest="port",
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help="The serial port of the target mbed (ie: COM3)",
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metavar="PORT")
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parser.add_option("-d", "--disk",
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dest="disk",
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help="The target disk path",
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metavar="DISK_PATH")
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parser.add_option("-t", "--timeout",
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dest="timeout",
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help="Timeout",
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metavar="TIMEOUT")
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parser.add_option("-e", "--extra",
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dest="extra",
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help="Extra serial port (used by some tests)",
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metavar="EXTRA")
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parser.add_option("-r", "--reset",
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dest="forced_reset_type",
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help="Forces different type of reset")
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parser.add_option("-R", "--reset-timeout",
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dest="forced_reset_timeout",
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metavar="NUMBER",
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type="int",
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help="When forcing a reset using option -r you can set up after reset timeout in seconds")
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(self.options, _) = parser.parse_args()
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self.DEFAULT_RESET_TOUT = 0
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self.DEFAULT_TOUT = 10
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if self.options.port is None:
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raise Exception("The serial port of the target mbed have to be provided as command line arguments")
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self.port = self.options.port
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self.disk = self.options.disk
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self.extra_port = self.options.extra
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self.extra_serial = None
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self.serial = None
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self.timeout = self.DEFAULT_TOUT if self.options.timeout is None else self.options.timeout
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print 'Host test instrumentation on port: "%s" and disk: "%s"' % (self.port, self.disk)
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def init_serial(self, baud=9600, extra_baud=9600):
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""" Initialize serial port. Function will return error is port can't be opened or initialized
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"""
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result = True
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try:
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self.serial = Serial(self.port, timeout=1)
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except Exception as e:
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result = False
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# Port can be opened
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if result:
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self.serial.setBaudrate(baud)
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if self.extra_port:
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self.extra_serial = Serial(self.extra_port, timeout = 1)
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self.extra_serial.setBaudrate(extra_baud)
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self.flush()
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return result
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def serial_timeout(self, timeout):
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""" Wraps self.mbed.serial object timeout property
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"""
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result = None
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if self.serial:
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self.serial.timeout = timeout
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result = True
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return result
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def serial_read(self, count=1):
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""" Wraps self.mbed.serial object read method
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"""
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result = None
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if self.serial:
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try:
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result = self.serial.read(count)
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except:
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result = None
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return result
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def serial_readline(self, timeout=5):
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""" Wraps self.mbed.serial object read method to read one line from serial port
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"""
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result = ''
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start = time()
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while (time() - start) < timeout:
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if self.serial:
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try:
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c = self.serial.read(1)
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result += c
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except:
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result = None
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break
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if c == '\n':
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break
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return result
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def serial_write(self, write_buffer):
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""" Wraps self.mbed.serial object write method
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"""
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result = None
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if self.serial:
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try:
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result = self.serial.write(write_buffer)
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except:
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result = None
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return result
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def touch_file(self, path):
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""" Touch file and set timestamp to items
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"""
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with open(path, 'a'):
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os.utime(path, None)
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def reset_timeout(self, timeout):
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""" Timeout executed just after reset command is issued
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"""
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for n in range(0, timeout):
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sleep(1)
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def reset(self):
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""" Calls proper reset plugin to do the job.
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Please refer to host_test_plugins functionality
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"""
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# Flush serials to get only input after reset
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self.flush()
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if self.options.forced_reset_type:
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host_tests_plugins.call_plugin('ResetMethod', self.options.forced_reset_type, disk=self.disk)
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else:
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host_tests_plugins.call_plugin('ResetMethod', 'default', serial=self.serial)
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# Give time to wait for the image loading
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reset_tout_s = self.options.forced_reset_timeout if self.options.forced_reset_timeout is not None else self.DEFAULT_RESET_TOUT
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self.reset_timeout(reset_tout_s)
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def flush(self):
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""" Flush serial ports
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"""
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if self.serial:
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self.serial.flushInput()
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self.serial.flushOutput()
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if self.extra_serial:
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self.extra_serial.flushInput()
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self.extra_serial.flushOutput()
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class TestResults:
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""" Test results set by host tests
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"""
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def __init__(self):
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self.RESULT_SUCCESS = 'success'
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self.RESULT_FAILURE = 'failure'
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self.RESULT_ERROR = 'error'
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self.RESULT_IO_SERIAL = 'ioerr_serial'
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class Test(TestResults):
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""" Base class for host test's test runner
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"""
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def __init__(self):
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self.mbed = Mbed()
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def run(self):
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""" Test runner for host test. This function will start executing
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test and forward test result via serial port to test suite
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"""
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try:
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result = self.test()
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self.print_result(self.RESULT_SUCCESS if result else self.RESULT_FAILURE)
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except Exception, e:
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print str(e)
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self.print_result(self.RESULT_ERROR)
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def setup(self):
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""" Setup and check if configuration for test is correct. E.g. if serial port can be opened
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"""
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result = True
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if not self.mbed.serial:
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result = False
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self.print_result(self.RESULT_IO_SERIAL)
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return result
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def notify(self, message):
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""" On screen notification function
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"""
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print message
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stdout.flush()
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def print_result(self, result):
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""" Test result unified printing function
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"""
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self.notify("\n{{%s}}\n{{end}}" % result)
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class DefaultTest(Test):
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""" Test class with serial port initialization
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"""
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def __init__(self):
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TestResults.__init__(self)
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Test.__init__(self)
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serial_init_res = self.mbed.init_serial()
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if not serial_init_res:
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self.print_result(self.RESULT_IO_SERIAL)
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self.mbed.reset()
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class Simple(DefaultTest):
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""" Simple, basic host test's test runner waiting for serial port
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output from MUT, no supervision over test running in MUT is executed.
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Just waiting for result
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"""
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def run(self):
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try:
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while True:
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c = self.mbed.serial_read(512)
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if c is None:
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self.print_result(self.RESULT_IO_SERIAL)
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break
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stdout.write(c)
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stdout.flush()
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except KeyboardInterrupt, _:
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self.notify("\r\n[CTRL+C] exit")
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if __name__ == '__main__':
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Simple().run()
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