#
# RTEMS Tools Project (http://www.rtems.org/)
# Copyright 2013-2014 Chris Johns (chrisj@rtems.org)
# All rights reserved.
#
# This file is part of the RTEMS Tools package in 'rtems-tools'.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
#
# RTEMS Testing Consoles
#
from __future__ import print_function
import errno
import os
import threading
import time
#
# Not available on Windows. Not sure what this means.
#
if os.name != 'nt':
import fcntl
from . import stty
else:
fcntl = None
stty = None
def save():
if stty is not None:
return stty.save()
return None
def restore(attributes):
if attributes is not None and stty is not None:
stty.restore(attributes)
class console(object):
'''RTEMS Testing console base.'''
def __init__(self, name, trace):
self.name = name
self.trace = trace
def __del__(self):
pass
def _tracing(self):
return self.trace
def open(self):
pass
def close(self):
pass
class stdio(console):
'''STDIO console.'''
def __init__(self, trace = False):
super(stdio, self).__init__('stdio', trace)
class tty(console):
'''TTY console connects to serial ports.'''
raw = 'B115200,~BRKINT,IGNBRK,IGNCR,~ICANON,~ISIG,~IEXTEN,~ECHO,CLOCAL,~CRTSCTS'
def __init__(self, dev, output, setup = None, trace = False):
self.tty = None
self.read_thread = None
self.dev = dev
self.output = output
if setup is None:
self.setup = raw
else:
self.setup = setup
super(tty, self).__init__(dev, trace)
def __del__(self):
super(tty, self).__del__()
if self._tracing():
print(':: tty close', self.dev)
if fcntl is not None:
fcntl.fcntl(me.tty.fd, fcntl.F_SETFL,
fcntl.fcntl(me.tty.fd, fcntl.F_GETFL) & ~os.O_NONBLOCK)
self.close()
def open(self):
def _readthread(me, x):
if self._tracing():
print(':: tty runner started', self.dev)
if fcntl is not None:
fcntl.fcntl(me.tty.fd, fcntl.F_SETFL,
fcntl.fcntl(me.tty.fd, fcntl.F_GETFL) | os.O_NONBLOCK)
line = ''
while me.running:
time.sleep(0.05)
try:
data = me.tty.fd.read()
except IOError as ioe:
if ioe.errno == errno.EAGAIN:
continue
raise
except:
raise
for c in data:
if len(c) == 0:
continue
if c != chr(0):
line += c
if c == '\n':
me.output(line)
line = ''
if self._tracing():
print(':: tty runner finished', self.dev)
if self._tracing():
print(':: tty open', self.dev)
self.tty = stty.tty(self.dev)
self.tty.set(self.setup)
self.tty.on()
self.read_thread = threading.Thread(target = _readthread,
name = 'tty[%s]' % (self.dev),
args = (self, 0))
self.read_thread.daemon = True
self.running = True
self.read_thread.start()
def close(self):
if self.tty:
time.sleep(1)
if self.read_thread:
self.running = False
self.read_thread.join(1)
self.tty = None
