def test_dwf_enumeration(param):
with unittest.mock.patch.object(dwf.api, '_l') as low_level_patch:
with unittest.mock.patch.object(dwf.api, 'DwfDevice') as dev_patch:
low_level_patch.FDwfEnum.return_value = 1
value = dwf.DwfEnumeration(param)
# Was FDwfEnum called with `param`
low_level_patch.FDwfEnum.assert_called_once_with(param)
# Was DwfDevice instantiated with the correct index
dev_patch.assert_called_once_with(0)
def ad_print_devices_info():
"""
Print device info and get number of connected devices.
:return: int: number of devices
"""
devices = dwf.DwfEnumeration()
print("Number of Devices: " + str(len(devices)))
for i, device in enumerate(devices):
print("------------------------------")
print("Device " + str(i) + " : ")
print("\t" + device.deviceName())
print("\t" + device.SN())
return len(devices)
def enumerate_devices():
"""
List connected devices and their possible configurations.
Note: Use print_device_list() to easily display the result in readable form.
:return: list of dictionaries containing information about the devices found
:rtype: list
"""
devices = []
try:
last_err_msg = dwf.FDwfGetLastErrorMsg()
if last_err_msg:
logging.getLogger(__name__).warning(last_err_msg)
# enumerate devices
devs = dwf.DwfEnumeration()
ch = lambda n=0, b=0: {'ch': n, 'buf': b}
for i, device in enumerate(devs):
dev_dict = {'info': {}, 'configs': []}
dev_dict['info']['SN'] = device.SN()
dev_dict['info']['deviceName'] = device.deviceName()
dev_dict['info']['userName'] = device.userName()
dev_dict['dev'] = device
if device.isOpened():
logging.getLogger(__name__).warning(
f"Can't connect to device {i} ({dev_dict['info']['SN']}), a connection is already open.\n"
"Note that the list was stored in " + __name__ +
".devices at the moment of import.")
dev_dict[
'configs'] = "Couldn't connect to device for further information"
else:
dwf_ai = dwf.DwfAnalogIn(device)
channel = dwf_ai.channelCount()
_, hzFreq = dwf_ai.frequencyInfo()
dev_dict['info']['maxAIfreq'] = hzFreq
dwf_ai.close()
n_configs = dwf.FDwfEnumConfig(i)
for iCfg in range(0, n_configs):
aic = dwf.FDwfEnumConfigInfo(
iCfg, dwf.DECIAnalogInChannelCount) # 1
aib = dwf.FDwfEnumConfigInfo(
iCfg, dwf.DECIAnalogInBufferSize) # 7
aoc = dwf.FDwfEnumConfigInfo(
iCfg, dwf.DECIAnalogOutChannelCount) # 2
aob = dwf.FDwfEnumConfigInfo(
iCfg, dwf.DECIAnalogOutBufferSize) # 8
dic = dwf.FDwfEnumConfigInfo(
iCfg, dwf.DECIDigitalInChannelCount) # 4
dib = dwf.FDwfEnumConfigInfo(
iCfg, dwf.DECIDigitalInBufferSize) # 9
doc = dwf.FDwfEnumConfigInfo(
iCfg, dwf.DECIDigitalOutChannelCount) # 5
dob = dwf.FDwfEnumConfigInfo(
iCfg, dwf.DECIDigitalOutBufferSize) # 10
dev_dict['configs'].append({
'ai': ch(aic, aib),
'ao': ch(aoc, aob),
'di': ch(dic, dib),
'do': ch(doc, dob)
})
dwf_ai.close()
devices.append(dev_dict)
except:
from sys import exc_info
logging.getLogger(__name__).warning(
"Exception occured while enumerating devices:\n",
exc_info()[0])
return devices
Requires:
Python 2.7, 3.3 or later
"""
import dwf
import sys
#check library loading errors, like: Adept Runtime not found
print(dwf.FDwfGetLastErrorMsg())
#print DWF version
print("DWF Version: " + dwf.FDwfGetVersion())
#enumerate and print device information
devs = dwf.DwfEnumeration()
print("Number of Devices: " + str(len(devs)))
for i, device in enumerate(devs):
print("------------------------------")
print("Device " + str(i) + " : ")
print("\t" + device.deviceName())
print("\t" + device.SN())
if not device.isOpened():
dwf_ai = dwf.DwfAnalogIn(device)
channel = dwf_ai.channelCount()
_, hzFreq = dwf_ai.frequencyInfo()
print("\tAnalog input channels: " + str(channel))
print("\tMax freq: " + str(hzFreq))
dwf_ai.close()
def hdwf():
"""Get a handle for the device to test with."""
device = dwf.DwfEnumeration()[0]
hdwf = dwf.Dwf(device)
yield hdwf
hdwf.close()
import pytest
import dwf
from hardware.signal_generator import AnalogDiscovery2SignalGenerator
from hardware.oscilloscope import AnalogDiscovery2Oscilloscope
if not dwf.DwfEnumeration():
pytest.skip("skipping AnalogDiscovery2 tests, no device present",
allow_module_level=True)
@pytest.fixture
def hdwf():
"""Get a handle for the device to test with."""
device = dwf.DwfEnumeration()[0]
hdwf = dwf.Dwf(device)
yield hdwf
hdwf.close()
def test_pass(hdwf):
ado = AnalogDiscovery2Oscilloscope(hdwf)
adsg = AnalogDiscovery2SignalGenerator(hdwf)
# assert ado
def test_2(hdwf):
ado = AnalogDiscovery2Oscilloscope(hdwf)
adsg = AnalogDiscovery2SignalGenerator(hdwf)
cho = ado.get_channel(0)
chsg = adsg.get_channel((0, 'carrier'))
Modified by: MURAMATSU Atsushi <*****@*****.**>
Revised: 2016-04-21
Original Author: Digilent, Inc.
Original Revision: 10/17/2013
Requires:
Python 2.7, 3.3 or later
"""
import dwf
import time
import matplotlib.pyplot as plt
print("Version: " + dwf.FDwfGetVersion())
cdevices = dwf.DwfEnumeration()
print("Number of Devices: " + str(len(cdevices)))
if len(cdevices) == 0:
print("no device detected")
quit()
print("Opening first device")
hdwf = dwf.Dwf()
print("Configure and start first analog out channel")
dwf_ao = dwf.DwfAnalogOut(hdwf)
dwf_ao.nodeEnableSet(0, dwf_ao.NODE.CARRIER, True)
print("1 = Sine wave")
dwf_ao.nodeFunctionSet(0, dwf_ao.NODE.CARRIER, dwf_ao.FUNC.SINE)
dwf_ao.nodeFrequencySet(0, dwf_ao.NODE.CARRIER, 3000.0)
