/
cooling.py
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/
cooling.py
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# Copyright 2014-2015 ARM Limited
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
from devlib.module import Module
from devlib.utils.serial_port import open_serial_connection
class MbedFanActiveCoolingModule(Module):
name = 'mbed-fan'
timeout = 30
@staticmethod
def probe(target):
return True
def __init__(self, target, port='/dev/ttyACM0', baud=115200, fan_pin=0):
super(MbedFanActiveCoolingModule, self).__init__(target)
self.port = port
self.baud = baud
self.fan_pin = fan_pin
def start(self):
with open_serial_connection(timeout=self.timeout,
port=self.port,
baudrate=self.baud) as target:
# pylint: disable=no-member
target.sendline('motor_{}_1'.format(self.fan_pin))
def stop(self):
with open_serial_connection(timeout=self.timeout,
port=self.port,
baudrate=self.baud) as target:
# pylint: disable=no-member
target.sendline('motor_{}_0'.format(self.fan_pin))
class OdroidXU3ctiveCoolingModule(Module):
name = 'odroidxu3-fan'
@staticmethod
def probe(target):
return target.file_exists('/sys/devices/odroid_fan.15/fan_mode')
def start(self):
self.target.write_value('/sys/devices/odroid_fan.15/fan_mode', 0, verify=False)
self.target.write_value('/sys/devices/odroid_fan.15/pwm_duty', 255, verify=False)
def stop(self):
self.target.write_value('/sys/devices/odroid_fan.15/fan_mode', 0, verify=False)
self.target.write_value('/sys/devices/odroid_fan.15/pwm_duty', 1, verify=False)