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#!/usr/bin/env python
#Copyright (c) 2011 Walter Bender
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import os
from gettext import gettext as _
from plugins.plugin import Plugin
from TurtleArt.tapalette import make_palette
from TurtleArt.talogo import primitive_dictionary
from TurtleArt.tautils import debug_output
import logging
_logger = logging.getLogger('turtleart-activity accelerometer plugin')
ACCELEROMETER_DEVICE = '/sys/devices/platform/lis3lv02d/position'
class Accelerometer(Plugin):
def __init__(self, parent):
self._parent = parent
if os.path.exists(ACCELEROMETER_DEVICE):
self._status = True
else:
self._status = False
self.running_sugar = self._parent.running_sugar
def setup(self):
# set up accelerometer specific blocks
palette = make_palette('sensor',
colors=["#FF6060", "#A06060"],
help_string=_('Palette of sensor blocks'))
primitive_dictionary['xyz'] = self.prim_xyz
if self._status:
palette.add_block('xyz',
style='basic-style-extended-vertical',
label=_('acceleration'),
help_string=\
_('push acceleration in x, y, z to heap'),
prim_name='xyz')
else:
palette.add_block('xyz',
style='basic-style-extended-vertical',
label=_('acceleration'),
help_string=\
_('push acceleration in x, y, z to heap'),
hidden=True,
prim_name='xyz')
self._parent.lc.def_prim(
'xyz', 0, lambda self: primitive_dictionary['xyz']())
def _status_report(self):
debug_output('Reporting accelerator status: %s' % (str(self._status)))
return self._status
# Block primitives used in talogo
def prim_xyz(self):
''' push accelerometer xyz to stack '''
if not self._status:
self._parent.lc.heap.append(0)
self._parent.lc.heap.append(0)
self._parent.lc.heap.append(0)
else:
fh = open(ACCELEROMETER_DEVICE)
string = fh.read()
xyz = string[1:-2].split(',')
self._parent.lc.heap.append(float(xyz[2]) / 18)
self._parent.lc.heap.append(float(xyz[1]) / 18)
self._parent.lc.heap.append(float(xyz[0]) / 18)
fh.close()
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