def ad_open_device_out_in():
dwf_ao_handler, dwf_ai_handler = None, None
if ad_print_devices_info():
print("Configuring device")
dwf_ao_handler = dwf.DwfAnalogOut()
dwf_ai_handler = dwf.DwfAnalogIn(dwf_ao_handler)
return dwf_ao_handler, dwf_ai_handler
def __init__(self, channel, amplituide, sampl_freq, buff_size):
gr.sync_block.__init__(self,
name="AD2_AnalogOut_Custom_f",
in_sig=[numpy.float32],
out_sig=None)
self.rgdSamples = [0] * buff_size
self.CHANNEL = channel
self.dwf_ao = dwf.DwfAnalogOut()
self.dwf_ao.nodeEnableSet(self.CHANNEL, self.dwf_ao.NODE.CARRIER, True)
self.dwf_ao.nodeFunctionSet(self.CHANNEL, self.dwf_ao.NODE.CARRIER, self.dwf_ao.FUNC.CUSTOM)
self.dwf_ao.nodeFrequencySet(self.CHANNEL, self.dwf_ao.NODE.CARRIER, int(frequency/buff_size))
self.dwf_ao.nodeAmplitudeSet(self.CHANNEL, self.dwf_ao.NODE.CARRIER, amplituide)
self.dwf_ao.nodeDataSet(self.CHANNEL, self.dwf_ao.NODE.CARRIER, self.rgdSamples)
self.dwf_ao.configure(self.CHANNEL, True)
self.done = 0
def __init__(self, channel, amplituide, offset):
gr.sync_block.__init__(self,
name="AnalogOut_Sine_i",
in_sig=[numpy.int32],
out_sig=None)
self.CHANNEL = channel
self.freqHz = 0
self.dwf_ao = dwf.DwfAnalogOut()
self.dwf_ao.nodeEnableSet(self.CHANNEL, self.dwf_ao.NODE.CARRIER, True)
self.dwf_ao.nodeFunctionSet(self.CHANNEL, self.dwf_ao.NODE.CARRIER,
self.dwf_ao.FUNC.SINE)
self.dwf_ao.nodeFrequencySet(self.CHANNEL, self.dwf_ao.NODE.CARRIER,
int(self.freqHz))
self.dwf_ao.nodeAmplitudeSet(self.CHANNEL, self.dwf_ao.NODE.CARRIER,
amplituide)
self.dwf_ao.nodeOffsetSet(self.CHANNEL, self.dwf_ao.NODE.CARRIER,
offset)
self.dwf_ao.configure(self.CHANNEL, True)
def __init__(self, device_number=0, config=0):
"""
Connect to device with optional configuration.
It connects to device with device_number as listed by the enumerate_devices() function of this module.
Note that the default value of 0 will simply connect to the first device found.
The possible configurations are also returned by enumerate_devices(). Note that enumerate devices is run at time
of module import and stored in the variable devices. Note that the information returned by enumerate_devices()
(or stored in the variable devices) can be diplayed in more readable form with the function print_device_list()
of this module.
:param device_number: the device number (default: 0)
:type device_number: int
:param config: configuration number (default: 0)
:type config: int
"""
self.logger = logging.getLogger(__name__)
super().__init__(device_number, config)
self.AnalogIn = dwf.DwfAnalogIn(self)
self.AnalogOut = dwf.DwfAnalogOut(self)
self.DigitalIn = dwf.DwfDigitalIn(self)
self.DigitalOut = dwf.DwfDigitalOut(self)
# Not sure yet what these do:
self.AnalogIO = dwf.DwfAnalogIO(self)
self.DigitalIO = dwf.DwfDigitalIO(self)
# create short name references
self.ai = self.AnalogIn
self.ao = self.AnalogOut
self.di = self.DigitalIn
self.do = self.DigitalOut
self.basic_analog_return_std = False # will be overwritten by preset_basic_analog()
self._read_timeout = 1 # will be overwritten by preset_basic_analog()
self._last_ao0 = 0 # will be overwritten by write_analog()
self._last_ao1 = 0 # will be overwritten by write_analog()
self._time_stabilized = time.time(
) # will be overwritten by write_analog()
self.preset_basic_analog()
self.logger.debug('DfwController object created')
def start_recording():
#print DWF version
print("DWF Version: " + dwf.FDwfGetVersion())
#constants
HZ_ACQ = 20e3
N_SAMPLES = 100000
#open device
print("Opening first device")
dwf_ao = dwf.DwfAnalogOut()
print("Preparing to read sample...")
print("Generating sine wave...")
dwf_ao.nodeEnableSet(0, dwf_ao.NODE.CARRIER, True)
dwf_ao.nodeFunctionSet(0, dwf_ao.NODE.CARRIER, dwf_ao.FUNC.SINE)
dwf_ao.nodeFrequencySet(0, dwf_ao.NODE.CARRIER, 1.0)
dwf_ao.nodeAmplitudeSet(0, dwf_ao.NODE.CARRIER, 2.0)
dwf_ao.configure(0, True)
#set up acquisition
dwf_ai = dwf.DwfAnalogIn(dwf_ao)
dwf_ai.channelEnableSet(0, True)
dwf_ai.channelRangeSet(0, 5.0)
dwf_ai.acquisitionModeSet(dwf_ai.ACQMODE.RECORD)
dwf_ai.frequencySet(HZ_ACQ)
dwf_ai.recordLengthSet(5)
#wait at least 2 seconds for the offset to stabilize
time.sleep(2)
#begin acquisition
dwf_ai.configure(False, True)
print(" waiting to finish")
rgdSamples = []
cSamples = 0
fLost = False
fCorrupted = False
while cSamples < N_SAMPLES:
sts = dwf_ai.status(True)
if cSamples == 0 and sts in (dwf_ai.STATE.CONFIG, dwf_ai.STATE.PREFILL,
dwf_ai.STATE.ARMED):
# Acquisition not yet started.
continue
cAvailable, cLost, cCorrupted = dwf_ai.statusRecord()
cSamples += cLost
if cLost > 0:
fLost = True
if cCorrupted > 0:
fCorrupted = True
if cAvailable == 0:
continue
if cSamples + cAvailable > N_SAMPLES:
cAvailable = N_SAMPLES - cSamples
# get samples
rgdSamples.extend(dwf_ai.statusData(0, cAvailable))
cSamples += cAvailable
print("Recording finished")
if fLost:
print("Samples were lost! Reduce frequency")
if cCorrupted:
print("Samples could be corrupted! Reduce frequency")
with open("record.csv", "w") as f:
for v in rgdSamples:
f.write("%s\n" % v)
plt.plot(rgdSamples)
plt.savefig('test.png', bbox_inches='tight')
scaled = np.int16(rgdSamples / np.max(np.abs(rgdSamples)) * 32767)
write('test.wav', 20000, scaled)
"""plt.show()"""
update_pic()
Original Author: Digilent, Inc.
Original Revision: 10/17/2013
Requires:
Python 2.7, 3.3 or later
"""
import dwf
import time
#print DWF version
print("DWF Version: " + dwf.FDwfGetVersion())
#open device
print("Opening first device...")
dwf_ao = dwf.DwfAnalogOut()
print("Generating sine wave...")
# enable two channels
dwf_ao.nodeEnableSet(0, dwf_ao.NODE.CARRIER, True)
dwf_ao.nodeEnableSet(1, dwf_ao.NODE.CARRIER, True)
# for second channel set master the first channel
dwf_ao.masterSet(1, 0)
# slave channel is controlled by the master channel
# it is enough to set trigger, wait, run and repeat paramters for master channel
# configure enabled channels
dwf_ao.nodeFunctionSet(-1, dwf_ao.NODE.CARRIER, dwf_ao.FUNC.SINE)
dwf_ao.nodeFrequencySet(-1, dwf_ao.NODE.CARRIER, 1000.0)
dwf_ao.nodeAmplitudeSet(-1, dwf_ao.NODE.CARRIER, 1.0)
def plot(self):
''' plot some random stuff '''
# random data
#print DWF version
print("DWF Version: " + dwf.FDwfGetVersion())
#open device
print("Opening first device")
dwf_ao = dwf.DwfAnalogOut()
print("Preparing to read sample...")
# print("Generating sine wave...")
# dwf_ao.nodeEnableSet(0, dwf_ao.NODE.CARRIER, True)
# dwf_ao.nodeFunctionSet(0, dwf_ao.NODE.CARRIER, dwf_ao.FUNC.SINE)
# dwf_ao.nodeFrequencySet(0, dwf_ao.NODE.CARRIER, 1.0)
# dwf_ao.nodeAmplitudeSet(0, dwf_ao.NODE.CARRIER, 2.0)
# dwf_ao.configure(0, True)
#set up acquisition
dwf_ai = dwf.DwfAnalogIn(dwf_ao)
dwf_ai.channelEnableSet(0, True)
dwf_ai.channelRangeSet(0, 5.0)
dwf_ai.acquisitionModeSet(dwf_ai.ACQMODE.RECORD)
dwf_ai.frequencySet(HZ_ACQ)
dwf_ai.recordLengthSet(N_SAMPLES / HZ_ACQ)
#wait at least 2 seconds for the offset to stabilize
time.sleep(1)
#begin acquisition
dwf_ai.configure(False, True)
print(" waiting to finish")
self.rgdSamples = []
cSamples = 0
fLost = False
fCorrupted = False
while cSamples < N_SAMPLES:
sts = dwf_ai.status(True)
if cSamples == 0 and sts in (dwf_ai.STATE.CONFIG,
dwf_ai.STATE.PREFILL,
dwf_ai.STATE.ARMED):
# Acquisition not yet started.
continue
cAvailable, cLost, cCorrupted = dwf_ai.statusRecord()
cSamples += cLost
if cLost > 0:
fLost = True
if cCorrupted > 0:
fCorrupted = True
if cAvailable == 0:
continue
if cSamples + cAvailable > N_SAMPLES:
cAvailable = N_SAMPLES - cSamples
# get samples
self.rgdSamples.extend(dwf_ai.statusData(0, cAvailable))
cSamples += cAvailable
print("Recording finished")
if fLost:
print("Samples were lost! Reduce frequency")
if cCorrupted:
print("Samples could be corrupted! Reduce frequency")
with open("record.csv", "w") as f:
for v in self.rgdSamples:
f.write("%s\n" % v)
"""plt.show()"""
scaled = np.int16(self.rgdSamples / np.max(np.abs(self.rgdSamples)) *
32767)
here = sys.path[0]
sound_path = os.path.join(here, "test.wav")
write(sound_path, 20000, scaled)
# create an axis
self.ax = self.figure.add_subplot(2, 1, 1)
# discards the old graph
self.ax.clear()
# plot data
sample_time = np.arange(len(self.rgdSamples)) / HZ_ACQ
self.new_rgdSamples = [i * 1000 for i in self.rgdSamples]
self.ax.plot(sample_time, self.new_rgdSamples)
self.ax.set_xlabel('Time (s)')
self.ax.set_ylabel('Voltage (mV)')
samplingFrequency, signalData = wavfile.read('test.wav')
self.bx = self.figure.add_subplot(2, 1, 2)
self.bx.specgram(signalData,
NFFT=512,
noverlap=256,
Fs=samplingFrequency,
cmap=plt.cm.get_cmap("jet"))
self.bx.set_xlabel('Time (s)')
self.bx.set_ylabel('Frequency (Hz)')
self.figure.subplots_adjust(hspace=0.5)
# refreshs canvas
self.canvas.draw()
def __init__(self, device_handle=-1):
super().__init__(2, has_sync=False)
self.device = dwf.DwfAnalogOut(device_handle)
self.device.autoConfigureSet(3) # turn on dynamic settings
