def __init__(self, ipcon, uid, version):
PluginBase.__init__(self, ipcon, uid, 'Rotary Poti Bricklet', version)
self.rp = BrickletRotaryPoti(uid, ipcon)
self.qtcb_position.connect(self.cb_position)
self.rp.register_callback(self.rp.CALLBACK_POSITION,
self.qtcb_position.emit)
self.position_knob = Qwt.QwtKnob(self)
self.position_knob.setTotalAngle(300)
self.position_knob.setScale(-150, 150, 30)
self.position_knob.setRange(-150, 150)
self.position_knob.setReadOnly(True)
self.position_knob.setFocusPolicy(Qt.NoFocus)
self.position_knob.setKnobWidth(40)
self.position_label = PositionLabel('Position: ')
self.current_value = None
plot_list = [['', Qt.red, self.get_current_value]]
self.plot_widget = PlotWidget('Position', plot_list)
layout_h1 = QHBoxLayout()
layout_h1.addStretch()
layout_h1.addWidget(self.position_label)
layout_h1.addStretch()
layout_h2 = QHBoxLayout()
layout_h2.addStretch()
layout_h2.addWidget(self.position_knob)
layout_h2.addStretch()
layout = QVBoxLayout(self)
layout.addLayout(layout_h1)
layout.addLayout(layout_h2)
layout.addWidget(self.plot_widget)
class RotaryPoti(PluginBase):
qtcb_position = pyqtSignal(int)
def __init__(self, ipcon, uid, version):
PluginBase.__init__(self, ipcon, uid, 'Rotary Poti Bricklet', version)
self.rp = BrickletRotaryPoti(uid, ipcon)
self.qtcb_position.connect(self.cb_position)
self.rp.register_callback(self.rp.CALLBACK_POSITION,
self.qtcb_position.emit)
self.position_knob = Qwt.QwtKnob(self)
self.position_knob.setTotalAngle(300)
self.position_knob.setScale(-150, 150, 30)
self.position_knob.setRange(-150, 150)
self.position_knob.setReadOnly(True)
self.position_knob.setFocusPolicy(Qt.NoFocus)
self.position_knob.setKnobWidth(40)
self.position_label = PositionLabel('Position: ')
self.current_value = None
plot_list = [['', Qt.red, self.get_current_value]]
self.plot_widget = PlotWidget('Position', plot_list)
layout_h1 = QHBoxLayout()
layout_h1.addStretch()
layout_h1.addWidget(self.position_label)
layout_h1.addStretch()
layout_h2 = QHBoxLayout()
layout_h2.addStretch()
layout_h2.addWidget(self.position_knob)
layout_h2.addStretch()
layout = QVBoxLayout(self)
layout.addLayout(layout_h1)
layout.addLayout(layout_h2)
layout.addWidget(self.plot_widget)
def start(self):
async_call(self.rp.get_position, None, self.cb_position, self.increase_error_count)
async_call(self.rp.set_position_callback_period, 20, None, self.increase_error_count)
self.plot_widget.stop = False
def stop(self):
async_call(self.rp.set_position_callback_period, 0, None, self.increase_error_count)
self.plot_widget.stop = True
def get_url_part(self):
return 'rotary_poti'
@staticmethod
def has_device_identifier(device_identifier):
return device_identifier == BrickletRotaryPoti.DEVICE_IDENTIFIER
def get_current_value(self):
return self.current_value
def cb_position(self, position):
self.current_value = position
self.position_knob.setValue(position)
self.position_label.setText(str(position))