[RDY] Topic/onewire

.travis.yml

@@ -2,6 +2,9 @@ language: python
 python:
   - "3.4"
   - "3.5"
+before_install:
+  - sudo apt-get -qq update
+  - sudo apt-get install -y libow-dev
 install:
   - pip install --upgrade pytest pytest-mock pytest-cov coveralls
   - pip install -r dev-requirements.txt

dev-requirements.txt

@@ -11,6 +11,7 @@ pytest-isort
 pytest-mock
 pytest-pylint
 pytest-runner
+onewire
 pyudev
 yapf
 requests

labgrid/driver/__init__.py

@@ -5,7 +5,7 @@
 from .sshdriver import SSHDriver
 from .externalconsoledriver import ExternalConsoleDriver
 from .exception import CleanUpError, ExecutionError
-from .powerdriver import ManualPowerDriver, ExternalPowerDriver
+from .powerdriver import ManualPowerDriver, ExternalPowerDriver, DigitalOutputPowerDriver
 from .usbloader import MXSUSBDriver, IMXUSBDriver
 from .usbstorage import USBStorageDriver
 from .infodriver import InfoDriver

labgrid/driver/onewiredriver.py

@@ -0,0 +1,29 @@
+import logging
+import onewire
+
+import attr
+
+from ..factory import target_factory
+from ..resource import OneWirePIO
+from ..protocol import DigitalOutputProtocol
+from .common import Driver
+
+@target_factory.reg_driver
+@attr.s
+class OneWirePIODriver(Driver, DigitalOutputProtocol):
+
+    bindings = {"port": OneWirePIO, }
+
+    def __attrs_post_init__(self):
+        super().__attrs_post_init__()
+        self.onewire = onewire.Onewire(self.port.host)
+
+    def set(self, status):
+        if status == True:
+            self.onewire.set(self.port.path, '1')
+        else:
+            self.onewire.set(self.port.path, '0')
+
+    def get(self):
+        status = self.onewire.get(self.port.path)
+        return status == '1'

labgrid/driver/powerdriver.py

@@ -5,9 +5,10 @@
 import attr
 
 from ..factory import target_factory
-from ..protocol import PowerProtocol
+from ..protocol import PowerProtocol, DigitalOutputProtocol
 from ..resource import NetworkPowerPort
 from .common import Driver
+from .onewiredriver import OneWirePIODriver
 
 
 @target_factory.reg_driver
@@ -93,3 +94,29 @@ def fallback():
     def get(self):
         return self.backend.get(self.port.host, self.port.index)
 
+@target_factory.reg_driver
+@attr.s
+class DigitalOutputPowerDriver(Driver, PowerProtocol):
+    """DigitalOutputPowerDriver - Driver using a DigitalOutput to reset the target and
+    subprocesses to turn it on and off"""
+    bindings = {"output": DigitalOutputProtocol, }
+    cmd_on = attr.ib(validator=attr.validators.instance_of(str))
+    cmd_off = attr.ib(validator=attr.validators.instance_of(str))
+    delay = attr.ib(default=1.0, validator=attr.validators.instance_of(float))
+
+    def __attrs_post_init__(self):
+        super().__attrs_post_init__()
+
+    def on(self):
+        subprocess.check_call(self.cmd_on)
+
+    def off(self):
+        subprocess.check_call(self.cmd_off)
+
+    def cycle(self):
+        self.output.set(True)
+        time.sleep(self.delay)
+        self.output.set(False)
+
+    def get(self):
+        return True

labgrid/protocol/__init__.py

@@ -5,3 +5,4 @@
 from .powerprotocol import PowerProtocol
 from .filetransferprotocol import FileTransferProtocol
 from .infoprotocol import InfoProtocol
+from .digitaloutputprotocol import DigitalOutputProtocol

labgrid/protocol/digitaloutputprotocol.py

@@ -0,0 +1,15 @@
+import abc
+
+
+class DigitalOutputProtocol(abc.ABC):
+    """Abstract class providing the OneWireProtocol interface"""
+
+    @abc.abstractmethod
+    def get(self):
+        """Implementations should return the status of the OneWirePort."""
+        raise NotImplementedError
+
+    @abc.abstractmethod
+    def set(self, status):
+        """Implementations should set the status of the OneWirePort"""
+        raise NotImplementedError

labgrid/resource/__init__.py

@@ -1,6 +1,7 @@
 from .base import SerialPort
 from .serialport import RawSerialPort
 from .networkservice import NetworkService
+from .onewireport import OneWirePIO
 from .power import NetworkPowerPort
 from .udev import USBSerialPort
 from .common import Resource, ResourceManager, ManagedResource

labgrid/resource/onewireport.py

@@ -0,0 +1,16 @@
+import attr
+
+from ..factory import target_factory
+from .common import Resource
+
+
+@target_factory.reg_resource
+@attr.s
+class OneWirePIO(Resource):
+    """This resource describes a Onewire PIO Port.
+
+    Arguments:
+    host - The hostname of the owserver e.g. localhost:4304
+    path - Path to the port on the owserver e.g. 29.7D6913000000/PIO.0"""
+    host = attr.ib(validator=attr.validators.instance_of(str))
+    path = attr.ib(validator=attr.validators.instance_of(str))

setup.py

@@ -21,6 +21,7 @@
         'pytest',
         'pyyaml',
         'pyudev',
+        'onewire',
         'requests',
     ],
     packages=[