def test_WriteTenPointsThenWriteSinglePointInBankB_ReturnExpectedReadBack(self):
AO0 = AnalogOutput({'bank': Bank.B, 'channel': AOChannel.AO0})
AI0 = AnalogInput({'bank': Bank.B, 'channel': AIChannel.AI0})
def __multipleWriteAndRead():
sample_rate = 1000
input_value = [7,7,7,7,7,7,7,5,5,10]
expected_value = '7,7,7,7,7,7,7,5,5,10'
irq_thread = threading.Thread(target=self.__reading_thread, args=(AI0, len(input_value), sample_rate, expected_value))
self.__start_thread(irq_thread)
AO0.write(input_value, sample_rate)
self.__close_thread(irq_thread)
def __singleWriteAndRead():
input_value = 3.2
AO0.write(input_value)
value = AI0.read()[0]
self.assertEqual(value, pytest.approx(input_value, 0.1))
__multipleWriteAndRead()
__singleWriteAndRead()
AO0.close()
AI0.close()
def setUp(self):
self.AO_single_channel = AnalogOutput({
'bank': bank,
'channel': AOChannel.AO0
})
self.AI_single_channel = AnalogInput({
'bank': bank,
'channel': AIChannel.AI0
})
class Test_AnalogInput_StartAssertion(unittest.TestCase):
@classmethod
def setUpClass(self):
self.expectedInput = [[0, 1]]
self.expectedSampleRate = 1000
self.expectedTimeout = -1
def setUp(self):
self.AO_single_channel = AnalogOutput({
'bank': bank,
'channel': AOChannel.AO0
})
self.AO_multiple_channels = AnalogOutput(
{
'bank': bank,
'channel': AOChannel.AO0
}, {
'bank': bank,
'channel': AOChannel.AO1
})
def tearDown(self):
self.AO_single_channel.close()
self.AO_multiple_channels.close()
def test_PassInvalidInputValues_ShowAssertion(self):
wrong_values = [0, [], [[]]]
for wrong_value in wrong_values:
with self.assertRaises(AssertionError):
self.AO_single_channel.start_continuous_mode(
wrong_value, self.expectedSampleRate, self.expectedTimeout)
def test_PassInvalidNumberOfInputValues_ShowAssertion(self):
wrong_values = [[1], [[1]], [[1], ['a']]]
for wrong_value in wrong_values:
with self.assertRaises(AssertionError):
self.AO_multiple_channels.start_continuous_mode(
wrong_value, self.expectedSampleRate, self.expectedTimeout)
def test_PassInvalidSampleRateToSingleChannel_ShowAssertion(self):
limits = {'SampleRate': {'min': 1000, 'max': 1600000}}
wrong_sample_rates = [
limits['SampleRate']['min'] - 1, limits['SampleRate']['max'] + 1
]
for wrong_sample_rate in wrong_sample_rates:
with self.assertRaises(AssertionError):
self.AO_single_channel.start_continuous_mode(
self.expectedInput, wrong_sample_rate,
self.expectedTimeout)
def setUp(self):
self.AO_single_channel = AnalogOutput({
'bank': bank,
'channel': AOChannel.AO0
})
self.AO_multiple_channels = AnalogOutput(
{
'bank': bank,
'channel': AOChannel.AO0
}, {
'bank': bank,
'channel': AOChannel.AO1
})
class Test_AnalogOutput_WriteSingleChannel(unittest.TestCase):
def setUp(self):
self.AO_single_channel = AnalogOutput({
'bank': bank,
'channel': AOChannel.AO0
})
self.AI_single_channel = AnalogInput({
'bank': bank,
'channel': AIChannel.AI0
})
def tearDown(self):
self.AO_single_channel.close()
self.AI_single_channel.close()
def test_OpeWriteMultiplePointsCloseRepeatedly_DoesnotShowAnyError(self):
sample_rate = 1000
input_value = [1.1, 2.2]
AO0_in_bank_A = AnalogOutput({
'bank': Bank.A,
'channel': AOChannel.AO0
})
AO0_in_bank_B = AnalogOutput({
'bank': Bank.B,
'channel': AOChannel.AO0
})
AO0_in_bank_A.write(input_value, sample_rate)
AO0_in_bank_B.write(input_value, sample_rate)
AO0_in_bank_B.close()
AO0_in_bank_A.write(input_value, sample_rate)
AO0_in_bank_A.close()
def test_WriteLargeNumberOfValuesWithTenThousandSampleRate_DoesnotShowAnyError(
self):
sample_rate = 10000
input_value = [3.3 for i in range(55555)]
self.AO_single_channel.write(input_value, sample_rate)
def writeWaveformToAO(p_waveform, p_sampleRate, p_channelRef=None):
bank = Bank.B
channel = AOChannel.AO0
isNewChannel = p_channelRef is None
if isNewChannel:
p_channelRef = AnalogOutput({
'bank': bank,
'channel': channel
})
# printString('朗读歌名...')
timeout = -1
MAX_SINGLE_WRITE = 200000
totalSize = len(p_waveform)
# limit the waveform length of single write
numberOfChunks = math.ceil(totalSize / MAX_SINGLE_WRITE)
for i in range(numberOfChunks):
startOffset = i * MAX_SINGLE_WRITE
endOffset = min(totalSize, (i + 1) * MAX_SINGLE_WRITE - 1)
#print('[DBG] write range: %d:%d' % (startOffset, endOffset))
toWrite = [p_waveform[startOffset:endOffset]]
if i == 0:
p_channelRef.start_continuous_mode(toWrite, p_sampleRate, timeout)
p_channelRef.write(toWrite, p_sampleRate)
time.sleep(5)
# printString('结束播放')
p_channelRef.stop_continuous_mode()
if isNewChannel:
p_channelRef.close()
def test_GivenBankAAI0AI1AndBankBAI0AI1_Write_ReturnExpectedReadBack(self):
def __read(number_of_times_to_read, read_object, number_of_samples_to_read, timeout, expected_value):
title = {'A': 'Bank A AI0 - AO0 and AI1 - AO3', 'B': 'Bank B AI0 - AO1 and AI0 - AO3'}
result = {'A': [[],[]], 'B': [[],[]]}
for i in range(0, number_of_times_to_read):
value_array = read_object.read(number_of_samples_to_read, timeout)
# print(value_array)
bank_A_values = value_array[0]
bank_B_values = value_array[1]
result['A'][0].append(bank_A_values[0])
result['A'][1].append(bank_A_values[1])
result['B'][0].append(bank_B_values[0])
result['B'][1].append(bank_B_values[1])
def __print(bank):
print(title[bank])
for index, channel in enumerate(result[bank]):
for values_per_channel in channel:
values = [ round(value) for value in values_per_channel ]
print('continuous: %s should almost equal to %s and continuous from the last read' % (values, expected_value[bank][index]))
__print(Bank.A.value)
__print(Bank.B.value)
AO = AnalogOutput({'bank': Bank.B, 'channel': AOChannel.AO0},
{'bank': Bank.B, 'channel': AOChannel.AO1},
{'bank': bank, 'channel': AOChannel.AO0},
{'bank': bank, 'channel': AOChannel.AO1})
AI = AnalogInput({'bank': Bank.B, 'channel': AIChannel.AI0},
{'bank': Bank.B, 'channel': AIChannel.AI3},
{'bank': bank, 'channel': AIChannel.AI0},
{'bank': bank, 'channel': AIChannel.AI3})
timeout = -1
sample_rate = 1000
input_value = [[1,2,3,4,5,6,7,8,9,10], [10,9,8,7,6,5,4,3,2,1], [2,3,4,5,6,2,3,4,5,6], [7,6,5,4,3,7,6,5,4,3]]
number_of_samples_to_read = 5
expected_value = {
'A': [self.__convert_list_to_string(input_value[2]), self.__convert_list_to_string(input_value[3])],
'B': [self.__convert_list_to_string(input_value[0]), self.__convert_list_to_string(input_value[1])]
}
irq_thread = threading.Thread(target=self.__writing_thread, args=(AO, input_value, timeout))
AO.start_continuous_mode(input_value, sample_rate, timeout)
self.__start_thread(irq_thread)
AI.start_continuous_mode(sample_rate)
__read(2, AI, number_of_samples_to_read, timeout, expected_value)
self.__close_thread(irq_thread)
AO.close()
AI.close()
def test_GivenBankAAI0AI1AndBankBAI0_WriteWithDifferentValuesLength_ReturnExpectedReadBack(self):
def __read(number_of_times_to_read, read_object, number_of_samples_to_read, timeout, expected_value):
# result = [A: [AO0, AO1], B: [AO0]]
result = [[[],[]], [[],[]]]
for i in range(0, number_of_times_to_read):
value_array = read_object.read(number_of_samples_to_read, timeout)
bank_A_values = value_array[0]
bank_B_values = value_array[1]
result[0][0].append(bank_A_values[0])
result[0][1].append(bank_A_values[1])
result[1][0].append(bank_B_values[0])
def __print(channels, bank):
for channel in channels:
for index, values_per_channel in enumerate(channel):
values = [ round(value) for value in values_per_channel ]
if bank == Bank.A.value:
print('continuous: %s should almost equal to %s and continuous from the last read' % (values, expected_value[index]))
else:
print('continuous: %s should almost equal to %s and continuous from the last read' % (values, expected_value[2]))
print('Bank A AI0 - AO0 and AI1 - AO3')
__print(result[0], Bank.A.value)
print('Bank B AI0 - AO0')
__print(result[1], Bank.B.value)
AO = AnalogOutput({'bank': Bank.B, 'channel': AOChannel.AO0},
{'bank': bank, 'channel': AOChannel.AO0},
{'bank': bank, 'channel': AOChannel.AO1})
AI = AnalogInput({'bank': Bank.B, 'channel': AIChannel.AI0},
{'bank': bank, 'channel': AIChannel.AI0},
{'bank': bank, 'channel': AIChannel.AI3})
timeout = -1
sample_rate = 1000
input_value = [[0,1,2,3,4,5,0,1,2,3,4,5], [7,8,9,10,7,8,9,10,7,8,9,10], [1,2,3,4,5,1,2,3,4,5]]
number_of_samples_to_read = 4
expected_value = [self.__convert_list_to_string(input_value[1]), self.__convert_list_to_string(input_value[2]), self.__convert_list_to_string(input_value[0])]
irq_thread = threading.Thread(target=self.__writing_thread, args=(AO, input_value, timeout))
AO.start_continuous_mode(input_value, sample_rate, timeout)
self.__start_thread(irq_thread)
AI.start_continuous_mode(sample_rate)
__read(2, AI, number_of_samples_to_read, timeout, expected_value)
self.__close_thread(irq_thread)
AO.close()
AI.close()
class Test_AnalogInputAndOutput_WriteTwoChannels(unittest.TestCase):
def setUp(self):
self.AO_multiple_channels = AnalogOutput({'bank': bank, 'channel': AOChannel.AO0},
{'bank': bank, 'channel': AOChannel.AO1})
self.AI_multiple_channels = AnalogInput({'bank': bank, 'channel': AIChannel.AI0},
{'bank': bank, 'channel': AIChannel.AI3})
def tearDown(self):
self.AO_multiple_channels.close()
self.AI_multiple_channels.close()
def __start_thread(self, irq_thread):
irq_thread.start()
self.run = True
def __close_thread(self, irq_thread):
self.run = False
irq_thread.join()
def __reading_thread(self, number_of_samples, sample_rate, expected_value):
value_array = None
while self.run:
value_array = self.AI_multiple_channels.read(number_of_samples, sample_rate)
value_array_in_bank_A = value_array[0]
AI1_array = value_array_in_bank_A[0]
AI3_array = value_array_in_bank_A[1]
AI1_values = [ round(value) for value in AI1_array ]
AI3_values = [ round(value) for value in AI3_array ]
print('AO0 %s should almost equal to %s' % (AI1_values, expected_value))
print('AO3 %s should almost equal to %s' % (AI3_values, expected_value))
def test_WriteSinglePoint_ReturnExpectedReadBack(self):
input_value = 3.5
self.AO_multiple_channels.write(input_value)
value_array = self.AI_multiple_channels.read()
for value in value_array:
self.assertEqual(value, pytest.approx(input_value, 0.1))
def test_WriteSixteenPointsWithOneThousandSampleRate_ReturnExpectedReadBack(self):
sample_rate = 1000
input_value = [9,9,9,9,9,9,9,9,9,9,5,5,5,2,2,2]
expected_value = '9,9,9,9,9,9,9,9,9,9,5,5,5,2,2,2'
irq_thread = threading.Thread(target=self.__reading_thread, args=(len(input_value), sample_rate, expected_value))
self.__start_thread(irq_thread)
self.AO_multiple_channels.write(input_value, sample_rate)
self.__close_thread(irq_thread)
def test_WriteSinglePoint_ReturnDifferentValueFromEachChannel(self):
AO_multiple_channels = AnalogOutput({'bank': bank, 'channel': AOChannel.AO0},
{'bank': bank, 'channel': AOChannel.AO1})
AI_multiple_channels = AnalogInput({'bank': bank, 'channel': AIChannel.AI0},
{'bank': bank, 'channel': AIChannel.AI3})
input_value_for_single_channels = 2.5
input_value_for_multiple_channels = 3.3
AO_multiple_channels.write(input_value_for_multiple_channels)
self.AO_single_channel.write(input_value_for_single_channels)
value_array = AI_multiple_channels.read()
for index, value in enumerate(value_array):
if index == 0:
self.assertEqual(value, pytest.approx(input_value_for_single_channels, 0.1))
else:
self.assertEqual(value, pytest.approx(input_value_for_multiple_channels, 0.1))
AO_multiple_channels.close()
AI_multiple_channels.close()
def test_GivenBankBAI0AndBankAAI1_Write_ReturnExpectedReadBack(self):
def __read(number_of_times_to_read, read_object, number_of_samples_to_read, timeout, expected_value_for_bank_A, expected_value_for_bank_B):
result = [[], []]
for i in range(0, number_of_times_to_read):
value_array = read_object.read(number_of_samples_to_read, timeout)
result[0].append(value_array[0])
result[1].append(value_array[1])
def __print(channels, expected_value):
for channel in channels:
for values_per_channel in channel:
values = [ round(value) for value in values_per_channel ]
print('continuous: %s should almost equal to %s and continuous from the last read' % (values, expected_value))
print('Bank A AI3 - AO1')
__print(result[0], expected_value_for_bank_A)
print('Bank B AI0 - AO0')
__print(result[1], expected_value_for_bank_B)
AO = AnalogOutput({'bank': Bank.B, 'channel': AOChannel.AO0},
{'bank': bank, 'channel': AOChannel.AO1})
AI = AnalogInput({'bank': Bank.B, 'channel': AIChannel.AI0},
{'bank': bank, 'channel': AIChannel.AI3})
timeout = -1
sample_rate = 1000
input_value = [[1,2,3,4,5,6,7,8,9,10], [10,9,8,7,6,5,4,3,2,1]]
number_of_samples_to_read = 5
expected_value_for_bank_B = self.__convert_list_to_string(input_value[0])
expected_value_for_bank_A = self.__convert_list_to_string(input_value[1])
irq_thread = threading.Thread(target=self.__writing_thread, args=(AO, input_value, timeout))
AO.start_continuous_mode(input_value, sample_rate, timeout)
self.__start_thread(irq_thread)
AI.start_continuous_mode(sample_rate)
__read(2, AI, number_of_samples_to_read, timeout, expected_value_for_bank_A, expected_value_for_bank_B)
self.__close_thread(irq_thread)
AO.close()
AI.close()
def __write_and_read(input_value):
AO_single_channel = AnalogOutput({'bank': Bank.B, 'channel': AOChannel.AO0})
AI_single_channel = AnalogInput({'bank': Bank.B, 'channel': AIChannel.AI0})
timeout = -1
sample_rate = 1000
number_of_samples_to_read = 10
expected_value = self.__convert_list_to_string(input_value)
irq_thread = threading.Thread(target=self.__writing_thread, args=(AO_single_channel, input_value, timeout))
AO_single_channel.start_continuous_mode(input_value, sample_rate, timeout)
self.__start_thread(irq_thread)
AI_single_channel.start_continuous_mode(sample_rate)
self.__read(2, AI_single_channel, number_of_samples_to_read, timeout, expected_value)
self.__close_thread(irq_thread)
AO_single_channel.close()
AI_single_channel.close()
def test_Given7PointsWith1000SampleRateOnBankA_WriteThenCloseWithoutStop_ReturnExpectedReadBack(self):
AO_single_channel = AnalogOutput({'bank': bank, 'channel': AOChannel.AO0})
AI_single_channel = AnalogInput({'bank': bank, 'channel': AIChannel.AI0})
timeout = -1
sample_rate = 2000
input_value = [[9,8,7,6,5,4,3,2,1,0,9,8,7,6,5,4,3,2,1,0]]
number_of_samples_to_read = 7
expected_value = self.__convert_list_to_string(input_value)
irq_thread = threading.Thread(target=self.__writing_thread, args=(AO_single_channel, input_value, timeout))
AO_single_channel.start_continuous_mode(input_value, sample_rate, timeout)
self.__start_thread(irq_thread)
AI_single_channel.start_continuous_mode(sample_rate)
self.__read(3, AI_single_channel, number_of_samples_to_read, timeout, expected_value)
self.__close_thread(irq_thread)
AO_single_channel.close()
AI_single_channel.close()
def setUp(self):
self.AO = AnalogOutput({'bank': Bank.A, 'channel': AOChannel.AO0})
self.success = False
class Test_AIIRQ(unittest.TestCase):
def setUp(self):
self.AO = AnalogOutput({'bank': Bank.A, 'channel': AOChannel.AO0})
self.success = False
def tearDown(self):
self.AO.close()
@classmethod
def setUpClass(self):
self.rising_array = [0, 1, 2, 3, 4]
self.falling_array = [4, 3, 2, 1, 0]
def __irq_handler(self):
self.success = True
def __reading_thread(self, value_to_write):
# wait for the irq to be ready
time.sleep(0.7)
self.AO.write(value_to_write, 1000)
def test_OpenWithRisingEdgeAndWaitForInterrupt_IrqNumberWasAsserted(self):
irq_type = AIIRQType.RISING
irq_thread = threading.Thread(target=self.__reading_thread,
args=(self.rising_array, ))
with AIIRQ(AIIRQChannel.AI0, self.__irq_handler, irq_number, timeout,
threshold, hysteresis, irq_type) as AI_IRQ:
irq_thread.start()
AI_IRQ.wait()
irq_thread.join()
self.assertTrue(self.success)
def test_OpenWithRisingEdgeAndWaitForInterrupt_IrqNumberWasNotAsserted(
self):
irq_type = AIIRQType.RISING
irq_thread = threading.Thread(target=self.__reading_thread,
args=(self.falling_array, ))
with AIIRQ(AIIRQChannel.AI0, self.__irq_handler, irq_number, timeout,
threshold, hysteresis, irq_type) as AI_IRQ:
irq_thread.start()
AI_IRQ.wait()
irq_thread.join()
self.assertFalse(self.success)
def test_OpenWithFallingEdgeAndWaitForInterrupt_IrqNumberWasAsserted(self):
irq_type = AIIRQType.FALLING
irq_thread = threading.Thread(target=self.__reading_thread,
args=(self.falling_array, ))
with AIIRQ(AIIRQChannel.AI0, self.__irq_handler, irq_number, timeout,
threshold, hysteresis, irq_type) as AI_IRQ:
irq_thread.start()
AI_IRQ.wait()
irq_thread.join()
self.assertTrue(self.success)
def test_OpenWithFallingEdgeAndWaitForInterrupt_IrqNumberWasNotAsserted(
self):
irq_type = AIIRQType.FALLING
irq_thread = threading.Thread(target=self.__reading_thread,
args=(self.rising_array, ))
with AIIRQ(AIIRQChannel.AI0, self.__irq_handler, irq_number, timeout,
threshold, hysteresis, irq_type) as AI_IRQ:
irq_thread.start()
AI_IRQ.wait()
irq_thread.join()
self.assertFalse(self.success)
def setUpClass(self):
self.AO = AnalogOutput({'bank': bank, 'channel': AOChannel.AO0})
class Test_AnalogOutput_WriteAssertion(unittest.TestCase):
@classmethod
def setUpClass(self):
self.AO = AnalogOutput({'bank': bank, 'channel': AOChannel.AO0})
@classmethod
def tearDownClass(self):
self.AO.close()
def test_WriteWithInvalidNumberOfArguments_ShowAssertion(self):
with self.assertRaises(TypeError):
self.AO.write()
with self.assertRaises(TypeError):
self.AO.write(1000, 1000, 1000)
def test_WriteOneSampleWithInvalidValue_ShowAssertion(self):
testcases = [
'a',
'',
[],
]
for testcase in testcases:
with self.assertRaises(AssertionError):
self.AO.write(testcase)
def test_WriteNSampleWithInvalidValues_ShowAssertion(self):
sample_rate = 1000
testcases = [
[3.5, 'a'],
[3.5, []],
'',
5,
]
for testcase in testcases:
with self.assertRaises(AssertionError):
self.AO.write(testcase, sample_rate)
def test_WriteNSampleWithInvalidSampleRate_ShowAssertion(self):
values = [3.5]
testcases = [
'',
[],
]
for testcase in testcases:
with self.assertRaises(AssertionError):
self.AO.write(values, testcase)
def test_PassSampleRateThatIsGreaterThanMax_ShowAssertion(self):
values = [3.5]
with self.assertRaises(AssertionError):
self.AO.write(values, limits['sampleRate']['max'] + 1)
def test_PassSampleRateThatIsLessThanMin_ShowAssertion(self):
values = [3.5]
with self.assertRaises(AssertionError):
self.AO.write(values, limits['sampleRate']['min'] - 1)
def test_OpenWithoutChannel_ShowAssertion(self):
with self.assertRaises(AssertionError):
AnalogOutput({'bank': bank})
def test_OpenWithoutBank_ShowAssertion(self):
with self.assertRaises(AssertionError):
AnalogOutput({'channel': AOChannel.AO0})
# specify the bank and channels for the AO session
bank = Bank.A
channel0 = AOChannel.AO0
channel1 = AOChannel.AO1
##############################################################################
# Section 1: Single Point (1 Sample)
# Use the write function to write a single point of data to the channels.
# The hardware generates one sample for a channel.
##############################################################################
# configure the AO channels
with AnalogOutput(
{
'bank': bank, # define first channel: AO0
'channel': channel0
},
{
'bank': bank, # define second channel: AO1
'channel': channel1
}) as AO_multiple_channels:
# write to the AO channels 20 times
for i in range(0, 20):
# define the value as a floating-point number
input_value = 3.5
# write 3.5 to both AO0 and AO1 on bank A
AO_multiple_channels.write(input_value)
# add a short delay before writing the next data point
time.sleep(0.001)
##############################################################################
def test_OpeWriteMultiplePointsCloseRepeatedly_DoesnotShowAnyError(self):
sample_rate = 1000
input_value = [1.1, 2.2]
AO0_in_bank_A = AnalogOutput({
'bank': Bank.A,
'channel': AOChannel.AO0
})
AO0_in_bank_B = AnalogOutput({
'bank': Bank.B,
'channel': AOChannel.AO0
})
AO0_in_bank_A.write(input_value, sample_rate)
AO0_in_bank_B.write(input_value, sample_rate)
AO0_in_bank_B.close()
AO0_in_bank_A.write(input_value, sample_rate)
AO0_in_bank_A.close()
class Test_AnalogInputAndOutput_WriteSingleChannel(unittest.TestCase):
def setUp(self):
self.AO_single_channel = AnalogOutput({'bank': bank, 'channel': AOChannel.AO0})
self.AI_single_channel = AnalogInput({'bank': bank, 'channel': AIChannel.AI0})
def tearDown(self):
self.AO_single_channel.close()
self.AI_single_channel.close()
def __start_thread(self, irq_thread):
irq_thread.start()
self.run = True
def __close_thread(self, irq_thread):
self.run = False
irq_thread.join()
def __reading_thread(self, read_object, number_of_samples, sample_rate, expected_value):
value_array = None
while self.run:
value_array = read_object.read(number_of_samples, sample_rate)[0][0]
values = [ round(value) for value in value_array ]
print('%s should almost equal to %s' % (values, expected_value))
def test_WriteSinglePoint_ReturnExpectedReadBack(self):
input_value = 2.0
self.AO_single_channel.write(input_value)
value_array = self.AI_single_channel.read()
for value in value_array:
self.assertEqual(value, pytest.approx(input_value, 0.1))
def test_WriteSinglePoint_ReturnDifferentValueFromEachChannel(self):
AO_multiple_channels = AnalogOutput({'bank': bank, 'channel': AOChannel.AO0},
{'bank': bank, 'channel': AOChannel.AO1})
AI_multiple_channels = AnalogInput({'bank': bank, 'channel': AIChannel.AI0},
{'bank': bank, 'channel': AIChannel.AI3})
input_value_for_single_channels = 2.5
input_value_for_multiple_channels = 3.3
AO_multiple_channels.write(input_value_for_multiple_channels)
self.AO_single_channel.write(input_value_for_single_channels)
value_array = AI_multiple_channels.read()
for index, value in enumerate(value_array):
if index == 0:
self.assertEqual(value, pytest.approx(input_value_for_single_channels, 0.1))
else:
self.assertEqual(value, pytest.approx(input_value_for_multiple_channels, 0.1))
AO_multiple_channels.close()
AI_multiple_channels.close()
def test_WriteTensPointWithOneThousandSampleRate_ReturnExpectedReadBack(self):
sample_rate = 1000
input_value = [1,1,2,2,3,3,4,4,5,5]
expected_value = '1,1,2,2,3,3,4,4,5,5'
irq_thread = threading.Thread(target=self.__reading_thread, args=(self.AI_single_channel, len(input_value), sample_rate, expected_value))
self.__start_thread(irq_thread)
self.AO_single_channel.write(input_value, sample_rate)
self.__close_thread(irq_thread)
def test_WriteTenPointsThenWriteSinglePointInBankB_ReturnExpectedReadBack(self):
AO0 = AnalogOutput({'bank': Bank.B, 'channel': AOChannel.AO0})
AI0 = AnalogInput({'bank': Bank.B, 'channel': AIChannel.AI0})
def __multipleWriteAndRead():
sample_rate = 1000
input_value = [7,7,7,7,7,7,7,5,5,10]
expected_value = '7,7,7,7,7,7,7,5,5,10'
irq_thread = threading.Thread(target=self.__reading_thread, args=(AI0, len(input_value), sample_rate, expected_value))
self.__start_thread(irq_thread)
AO0.write(input_value, sample_rate)
self.__close_thread(irq_thread)
def __singleWriteAndRead():
input_value = 3.2
AO0.write(input_value)
value = AI0.read()[0]
self.assertEqual(value, pytest.approx(input_value, 0.1))
__multipleWriteAndRead()
__singleWriteAndRead()
AO0.close()
AI0.close()
def setUp(self):
self.AO_multiple_channels = AnalogOutput({'bank': bank, 'channel': AOChannel.AO0},
{'bank': bank, 'channel': AOChannel.AO1})
self.AI_multiple_channels = AnalogInput({'bank': bank, 'channel': AIChannel.AI0},
{'bank': bank, 'channel': AIChannel.AI3})
The program writes values to AO0 on bank A.
"""
import time
from nielvis import AnalogOutput, Bank, AOChannel
# specify the bank and channel for the AO session
bank = Bank.A
channel = AOChannel.AO0
##############################################################################
# Section 1: Single Point (1 Sample)
# Use the write function to write a single point of data to the channel.
# The hardware generates one sample for a channel.
##############################################################################
# configure the AO channel
with AnalogOutput({'bank': bank, 'channel': channel}) as AO_single_channel:
# write to the AO channel 20 times
for i in range(0, 20):
# define the value as a floating-point number
input_value = 2.0
# write 2.0 to AO0 on bank A
AO_single_channel.write(input_value)
# add a short delay before writing the next data point
time.sleep(0.001)
##############################################################################
# Section 2: Multiple Points (n samples)
# Use the write function to write multiple points of data to the channel. The
# hardware generates a finite number of samples for a channel.
def test_OpenWithInvalidBank_ShowAssertion(self):
with self.assertRaises(AssertionError):
AnalogOutput({'bank': 'C', 'channel': AOChannel.AO0})
def test_OpenWithInvalidChannel_ShowAssertion(self):
with self.assertRaises(AssertionError):
AnalogOutput({'bank': bank, 'channel': 2})