diff options
Diffstat (limited to 'lab_control')
| -rw-r--r-- | lab_control/frequency_response.py | 14 | ||||
| -rw-r--r-- | lab_control/function_generator.py | 3 | ||||
| -rw-r--r-- | lab_control/measurement.py | 6 | ||||
| -rw-r--r-- | lab_control/oscilloscope.py | 3 | ||||
| -rw-r--r-- | lab_control/test/frequency_response_measurement_test.py | 25 | ||||
| -rw-r--r-- | lab_control/test/mock_lab.py | 17 |
6 files changed, 41 insertions, 27 deletions
diff --git a/lab_control/frequency_response.py b/lab_control/frequency_response.py index ca2002e..af399b1 100644 --- a/lab_control/frequency_response.py +++ b/lab_control/frequency_response.py @@ -1,13 +1,14 @@ from lab_control.function_generator import FunctionGenerator from lab_control.oscilloscope import Oscilloscope +from lab_control.measurement import Measurement -class FrequencyResponseMeasurement: +class FrequencyResponseMeasurement(Measurement): def __init__(self): - self.minFrequency = None - self.maxFrequency = None - self.steps = None - self.functionGeneratorChannel = None - self.oscilloscopeChannel = None + self.minFrequency = 20e0 + self.maxFrequency = 16e3 + self.steps = 50 + self.functionGeneratorChannel = 1 + self.oscilloscopeChannel = 1 self.measurementDone = False self.data = None @@ -22,4 +23,3 @@ class FrequencyResponseMeasurement: self.data.append((frequency, response)) self.measurementDone = True - diff --git a/lab_control/function_generator.py b/lab_control/function_generator.py index a403784..20f1b8c 100644 --- a/lab_control/function_generator.py +++ b/lab_control/function_generator.py @@ -5,9 +5,6 @@ class FunctionGenerator: This interface specifies the common API for all supported function generator devices. """ - def __init__(self): - pass - def setOn(self, channel: int) -> None: """ Enable channel. """ diff --git a/lab_control/measurement.py b/lab_control/measurement.py new file mode 100644 index 0000000..78f393e --- /dev/null +++ b/lab_control/measurement.py @@ -0,0 +1,6 @@ +from lab_control.function_generator import FunctionGenerator +from lab_control.oscilloscope import Oscilloscope + +class Measurement: + def measure(self, osc: Oscilloscope, fg: FunctionGenerator) -> None: + pass diff --git a/lab_control/oscilloscope.py b/lab_control/oscilloscope.py index e4b5a89..167879c 100644 --- a/lab_control/oscilloscope.py +++ b/lab_control/oscilloscope.py @@ -5,9 +5,6 @@ class Oscilloscope: This interface specifies the common API for all supported oscilloscope devices. """ - def __init__(self): - pass - def measureAmplitude(self, channel: int) -> float: """ Return amplitude measurement on specific channel. """ diff --git a/lab_control/test/frequency_response_measurement_test.py b/lab_control/test/frequency_response_measurement_test.py index caea62a..5a73b3e 100644 --- a/lab_control/test/frequency_response_measurement_test.py +++ b/lab_control/test/frequency_response_measurement_test.py @@ -11,6 +11,13 @@ def mockLab(): def uut(mockLab): return FrequencyResponseMeasurement() +def test_frequencyResponseDefaults(uut): + assert uut.minFrequency == 20e0 + assert uut.maxFrequency == 16e3 + assert uut.steps == 50 + assert uut.functionGeneratorChannel == 1 + assert uut.oscilloscopeChannel == 1 + def test_frequencyResponseRamp(mockLab, uut): uut.minFrequency = 100.0 uut.maxFrequency = 200.0 @@ -18,18 +25,22 @@ def test_frequencyResponseRamp(mockLab, uut): uut.functionGeneratorChannel = 1 uut.oscilloscopeChannel = 1 - # Expect a ramp response from 0 to 2 V - minAmplitude = 0.0 - maxAmplitude = 2.0 + # Expect a ramp response from 0.5 to 1.5 * input amplitude + inputAmplitude = 1.0 + minScale = 0.5 + maxScale = 1.5 - def amplitudeFunction(f: float) -> float: + def testFunction(f: float) -> float: assert f >= uut.minFrequency and f <= uut.maxFrequency frequencyPu = (f - uut.minFrequency) / (uut.maxFrequency - uut.minFrequency) - return minAmplitude + maxAmplitude * frequencyPu + return minScale + maxScale * frequencyPu mockLab.connectChannels(uut.functionGeneratorChannel, uut.oscilloscopeChannel) - mockLab.setAmplitudeFunction(uut.oscilloscopeChannel, amplitudeFunction) - expectedData = [(f, amplitudeFunction(f)) for f in [100.0, 110.0, 120.0, 130.0, 140.0, 150.0, 160.0, 170.0, 180.0, 190.0, 200.0]] + mockLab.setTestFunction(uut.oscilloscopeChannel, testFunction) + mockLab.setAmplitude(uut.functionGeneratorChannel, inputAmplitude) + mockLab.setOn(uut.functionGeneratorChannel) + + expectedData = [(f, testFunction(f) * inputAmplitude) for f in [100.0, 110.0, 120.0, 130.0, 140.0, 150.0, 160.0, 170.0, 180.0, 190.0, 200.0]] assert not uut.measurementDone assert uut.data == None diff --git a/lab_control/test/mock_lab.py b/lab_control/test/mock_lab.py index 718f319..40893ca 100644 --- a/lab_control/test/mock_lab.py +++ b/lab_control/test/mock_lab.py @@ -12,8 +12,8 @@ class MockLab(FunctionGenerator, Oscilloscope): class OscChannelState: def __init__(self): - self.amplitudeFunction = None - self.fgChannel = None + self.testFunction = None + self.connectedChannel = None def __init__(self): self.fgChannels = [MockLab.FGChannelState() for i in range(0, 2)] @@ -35,8 +35,11 @@ class MockLab(FunctionGenerator, Oscilloscope): pass def measureAmplitude(self, channel: int) -> float: - fgChannel = self.oscChannels[channel - 1].fgChannel - return self.oscChannels[channel - 1].amplitudeFunction(self.fgChannels[fgChannel].frequency) + fgChannel = self.oscChannels[channel - 1].connectedChannel + frequency = fgChannel.frequency if fgChannel.on else 0.0 + amplitude = fgChannel.amplitude if fgChannel.on else 0.0 + + return self.oscChannels[channel - 1].testFunction(frequency) * amplitude def measurePeakToPeak(self, channel: int) -> float: pass @@ -47,8 +50,8 @@ class MockLab(FunctionGenerator, Oscilloscope): def measureFrequency(self, channel: int) -> float: pass - def setAmplitudeFunction(self, channel: int, f: Callable[[float], float]) -> None: - self.oscChannels[channel - 1].amplitudeFunction = f + def setTestFunction(self, channel: int, f: Callable[[float], float]) -> None: + self.oscChannels[channel - 1].testFunction = f def connectChannels(self, fg: int, osc: int) -> None: - self.oscChannels[osc - 1].fgChannel = fg - 1 + self.oscChannels[osc - 1].connectedChannel = self.fgChannels[fg - 1] |