def go():
if len(sys.argv) <= 1:
print "You must enter a test mode!"
printUsage()
sys.exit()
funcs = {
'radio' : audioTest,
'status' : testDeviceStatusQueries,
'raw-pipe' : testRawPipeMode,
'callback' : testCallback,
'traces' : testSweeps,
'int-traces' : interruptedSweeping,
'gps' : testGpsSweeps,
'reset' : resetDevice,
'iq' : testIqStreaming
}
if sys.argv[1] in funcs:
logSetup.initLogging()
sh = SignalHound()
# sh.preset()
# testDeviceStatusQueries(sh)
# testRawPipeMode(sh)
if len(sys.argv) == 2:
funcs[sys.argv[1]](sh)
if len(sys.argv) == 3:
funcs[sys.argv[1]](sh, float(sys.argv[2]))
# testCallback(sh)
sh.closeDevice()
else:
print "Error! You must enter a valid test-mode!"
printUsage()
def callbackTestFunc(bufPtr, bufLen): global START_TIME #hacking about for determining callback interval times. I shouldn't be using global, but fukkit. now = time.time() print "Callback!", bufPtr, bufLen print bufPtr[0] arr = SignalHound.decodeRawSweep(bufPtr, bufLen) print "NP Array = ", arr.shape, arr print "Elapsed Time = ", now-START_TIME START_TIME = now
def callbackTestFunc(bufPtr, bufLen):
global START_TIME #hacking about for determining callback interval times. I shouldn't be using global, but fukkit.
now = time.time()
print "Callback!", bufPtr, bufLen
print bufPtr[0]
arr = SignalHound.decodeRawSweep(bufPtr, bufLen)
print "NP Array = ", arr.shape, arr
print "Elapsed Time = ", now - START_TIME
START_TIME = now
def process(self):
ret = self.rawDataRingBuf.getOldest()
if ret != False:
rawDataBuf, retreiveLock = ret
# this immediate lock release is *probably* a bad idea, but as long as the buffer doesn't get almost entirely full, it should be OK.
# It will also prevent blockages in the output buffer from propigating back to the input buffer.
retreiveLock.release()
# seqNum, dataDict = tmp["data"]
# samples, triggers = dataDict["data"], dataDict["triggers"]
# print(len(samples))
# samples = fft.fft(samples)
# print "Doing FFT", seqNum
samples = SignalHound.fastDecodeArray(rawDataBuf,
SignalHound.rawSweepArrSize,
np.short)
for x in range(self.chunksPerAcq * self.overlap - 1):
# Create byte-aligned array for efficent FFT, and copy the data we're interested into it.
rets = pyfftw.n_byte_align_empty(self.outputSize,
16,
dtype=np.complex64)
dat = samples[x * (self.fftChunkSize / self.overlap):
(x * (self.fftChunkSize / self.overlap)) +
self.fftChunkSize] * self.window
self.fftFunc(dat, rets)
fftArr = self.fftFunc.get_output_array()
# # log.warning("Buf = %s, arrSize = %s, dtype=%s, as floats = %s", processedDataBuf, fftArr.shape, fftArr.dtype, fftArr.view(dtype=np.float32).shape)
# try:
# processedDataBuf, addLock = self.fftDataRingBuf.getAddArray()
# processedDataBuf[:] = fftArr.view(dtype=np.float32)
# finally:
# addLock.release()
x += 1
return 1
return 0
def process(self):
ret = self.rawDataRingBuf.getOldest()
if ret != False:
rawDataBuf, retreiveLock = ret
# this immediate lock release is *probably* a bad idea, but as long as the buffer doesn't get almost entirely full, it should be OK.
# It will also prevent blockages in the output buffer from propigating back to the input buffer.
retreiveLock.release()
# seqNum, dataDict = tmp["data"]
# samples, triggers = dataDict["data"], dataDict["triggers"]
# print(len(samples))
# samples = fft.fft(samples)
# print "Doing FFT", seqNum
samples = SignalHound.fastDecodeArray(rawDataBuf, SignalHound.rawSweepArrSize, np.short)
for x in range(self.chunksPerAcq*self.overlap-1):
# Create byte-aligned array for efficent FFT, and copy the data we're interested into it.
rets = pyfftw.n_byte_align_empty(self.outputSize, 16, dtype=np.complex64)
dat = samples[x*(self.fftChunkSize/self.overlap):(x*(self.fftChunkSize/self.overlap))+self.fftChunkSize] * self.window
self.fftFunc(dat, rets)
fftArr = self.fftFunc.get_output_array()
# # log.warning("Buf = %s, arrSize = %s, dtype=%s, as floats = %s", processedDataBuf, fftArr.shape, fftArr.dtype, fftArr.view(dtype=np.float32).shape)
# try:
# processedDataBuf, addLock = self.fftDataRingBuf.getAddArray()
# processedDataBuf[:] = fftArr.view(dtype=np.float32)
# finally:
# addLock.release()
x += 1
return 1
return 0
def sweepSource(statusMessageQueue, ctrlNs, printQueue, ringBuf):
from SignalHound import SignalHound
logSetup.initLogging(printQ = printQueue)
loop_timer = time.time()
print "Starting sweep-logger!"
log = logging.getLogger("Main.AcqProcess")
loop_timer = time.time()
seq_num = 0
sh = SignalHound()
startAcquisition(sh, statusMessageQueue)
temperature = sh.getDeviceDiagnostics()["temperature"]
while ctrlNs.run:
bufPtr, lock = ringBuf.getAddPointer()
try:
sh.fetchRaw_s(ctDataBufPtr=bufPtr)
except Exception:
log.error("IOError in Acquisition Thread!")
log.error(traceback.format_exc())
statusMessageQueue.put({"status" : (time.time(), "Error: Device interface crashed. Reinitializing")})
log.error("Resetting hardware!")
# sh.preset()
sh.forceClose()
try:
while 1:
log.warning("Freeing python device handle")
del(sh)
except UnboundLocalError:
pass
log.error("Hardware shut down, completely re-initializing device interface!")
# sys.exit()
sh = SignalHound()
startAcquisition(sh, statusMessageQueue)
finally:
lock.release()
if seq_num % PRINT_LOOP_CNT == 0:
now = time.time()
delta = now-loop_timer
updateInterval = delta / PRINT_LOOP_CNT
freq = 1 / updateInterval
log.info("Elapsed Time = %0.5f, Frequency = %s. Items in buffer = %s", delta, freq, ringBuf.getItemsNum())
loop_timer = now
# print
if seq_num % CAL_CHK_LOOP_CNT == 0:
diags = sh.getDeviceDiagnostics()
statusMessageQueue.put({"status" : (time.time(), diags)})
temptmp = diags["temperature"]
if abs(temperature - temptmp) > 2.0: # Temperature deviations of > 2° cause IF shifts. Therefore, we do a re-cal if they're detected
statusMessageQueue.put({"status" : (time.time(), "Recalibrating IF due to temperature change")})
sh.selfCal()
startAcquisition(sh, statusMessageQueue)
log.warning("Temperature changed > 2.0 C. Delta is %f. Recalibrated!", abs(temperature - temptmp))
temperature = temptmp
else:
log.info("Temperature deviation = %f. Not doing recal, since drift < 2C", abs(temperature - temptmp))
seq_num += 1
sh.abort()
sh.closeDevice()
del(sh)
ctrlNs.acqRunning = False
log.info("Acquisition-thread exiting!")
def sweepSource(dataQueues, ctrlNs, printQueue):
dataQueue, plotQueue = dataQueues
from SignalHound import SignalHound
logSetup.initLogging(printQ = printQueue)
loop_timer = time.time()
print "Starting sweep-logger!"
log = logging.getLogger("Main.AcqProcess")
loop_timer = time.time()
loops = 0
sh = SignalHound()
startAcquisition(sh, dataQueue, plotQueue)
# Send the trace size to the acq thread so I can properly set up the data-log file
numPoints = sh.queryTraceInfo()["arr-size"]
dataQueue.put({"arrSize" : numPoints})
temperature = sh.getDeviceDiagnostics()["temperature"]
runningSum = np.array(())
runningSumItems = 0
startFreq = 0
while 1:
try:
trace = sh.fetchTrace()
traceInfo = sh.queryTraceInfo()
dataDict = {
"info": traceInfo,
"data": trace
}
acqInfo = dataDict["info"]
if runningSum.shape != dataDict["data"]["max"].shape:
runningSum = np.zeros_like(dataDict["data"]["max"])
runningSumItems = 0
startFreq = acqInfo["ret-start-freq"]
binSize = acqInfo["arr-bin-size"]
log.info("Running average array size changed! Either the system just started, or something is seriously wrong!")
changed = False
if startFreq != acqInfo["ret-start-freq"]:
changed = True
else:
runningSum += dataDict["data"]["max"]
runningSumItems += 1
# if we've reached the number of average items per output array, or the frequency has changed, requiring an early dump of the specra data.
if runningSumItems == NUM_AVERAGE or changed:
# Divide down to the average
arr = runningSum / runningSumItems
# Build array to write out.
saveTime = time.time()
# log.info("Saving data record with timestamp %f", saveTime)
# Only write out to the file if we actually have data
if runningSumItems != 0:
dataQueue.put({"row" : (saveTime, startFreq, binSize, runningSumItems, arr)})
if plotQueue:
plotQueue.put({"row" : (saveTime, startFreq, binSize, runningSumItems, arr)})
del(trace)
runningSum = np.zeros_like(runningSum)
log.info("Estimated items in processing queue %s", dataQueue.qsize())
log.info("Running sum shape = %s, items = %s", runningSum.shape, runningSumItems)
runningSumItems = 0
# now = time.time()
# delta = now-loop_timer
# freq = 1 / (delta)
# log.info("Elapsed Time = %0.5f, Frequency = %s", delta, freq)
# loop_timer = now
# If we wrote the output because the current spectra has changed, we need to update the running acq info variables with the new frequencies.
if changed:
log.info("Retuned! Old freq = %s, new freq = %s", startFreq, acqInfo["ret-start-freq"])
runningSum += dataDict["data"]["max"]
startFreq = acqInfo["ret-start-freq"]
binSize = acqInfo["arr-bin-size"]
runningSumItems = 1
except Exception:
log.error("IOError in Acquisition Thread!")
log.error(traceback.format_exc())
dataQueue.put({"status" : "Error: Device interface crashed. Reinitializing"})
log.error("Resetting hardware!")
# sh.preset()
sh.forceClose()
try:
while 1:
log.warning("Freeing python device handle")
del(sh)
except UnboundLocalError:
pass
log.error("Hardware shut down, completely re-initializing device interface!")
# sys.exit()
sh = SignalHound()
startAcquisition(sh, dataQueue, plotQueue)
if loops % PRINT_LOOP_CNT == 0:
now = time.time()
delta = now-loop_timer
freq = 1 / (delta / PRINT_LOOP_CNT)
# log.info("Elapsed Time = %0.5f, Frequency = %s", delta, freq)
loop_timer = now
if loops % CAL_CHK_LOOP_CNT == 0:
diags = sh.getDeviceDiagnostics()
dataQueue.put({"status" : diags})
temptmp = diags["temperature"]
if abs(temperature - temptmp) > 2.0: # Temperature deviations of > 2° cause IF shifts. Therefore, we do a re-cal if they're detected
dataQueue.put({"status" : "Recalibrating IF"})
sh.selfCal()
startAcquisition(sh, dataQueue, plotQueue)
log.warning("Temperature changed > 2.0 C. Delta is %f. Recalibrated!", abs(temperature - temptmp))
temperature = temptmp
else:
log.info("Temperature deviation = %f. Not doing recal, since drift < 2C", abs(temperature - temptmp))
loops += 1
if ctrlNs.run == False:
log.info("Stopping Acq-thread!")
break
sh.abort()
sh.closeDevice()
del(sh)
log.info("Acq-thread closing dataQueue!")
dataQueue.close()
dataQueue.join_thread()
if plotQueue:
plotQueue.close()
plotQueue.cancel_join_thread()
ctrlNs.acqRunning = False
log.info("Acq-thread exiting!")
printQueue.close()
printQueue.join_thread()
def go():
print("startup")
statusMessageQueue = mp.Queue()
fftDataQueue = mp.Queue()
printQueue = mp.Queue()
ctrlManager = mp.Manager()
logSetup.initLogging(printQ = printQueue)
log = logging.getLogger("Main.Main")
ctrlNs = ctrlManager.Namespace()
ctrlNs.run = True
ctrlNs.acqRunning = True
ctrlNs.procRunning = True
ctrlNs.logRunning = True
ctrlNs.printerRun = True
ctrlNs.stopped = False
# A separate process for printing, which allows nice easy non-blocking printing.
printProc = mp.Process(target=printThread.printer, name="PrintFormatterThread", args=(printQueue, ctrlNs))
printProc.daemon = True
printProc.start()
rawDataRingBuf = sharedMemRingBuf.SharedMemRingBuf(2000, *SignalHound.getRawSweep_s_size())
# 32769 =fftChunkSize//2 + 1 (fftChunkSize = 2**16). Values are a complex64, which is really 2 32 bit floats
fftDataRingBuf = sharedMemRingBuf.SharedMemRingBuf(1000, ct.c_float, 32769*2)
print(rawDataRingBuf)
fftWorkerPool = mp.Pool(processes=s.NUM_FFT_PROESSES, initializer=fftWorker.FFTWorker, initargs=(ctrlNs, printQueue, rawDataRingBuf, fftDataRingBuf))
acqProc = mp.Process(target=spectraAcqThread.sweepSource, name="SweepThread", args=(statusMessageQueue, ctrlNs, printQueue, rawDataRingBuf))
logProc = mp.Process(target=spectraLogThread.logSweeps, name="LogThread", args=(statusMessageQueue, fftDataRingBuf, ctrlNs, printQueue))
log.info("Waiting while worker-processes perform initialization")
time.sleep(5)
acqProc.start()
logProc.start()
try:
while 1:
inStr = raw_input()
print inStr
if inStr == "q":
break
except KeyboardInterrupt:
pass
log.info("Stopping Processes!")
ctrlNs.run = False
# fftWorkerPool.terminate()
fftWorkerPool.close()
# Sometimes the last few queue items take a little while to trickle in.
# therefore, we both poll the queue for items, and try to join() the thread. That way
# as soon as the queue is *actually* empty, we exit immediately
# - - -
# this was a f*****g nightmare to track down.
log.info("Waiting for acquisition thread to halt.")
acqProc.join()
log.info("Acquisition thread halted.")
log.info("Stopping worker thread pool.")
ctrlNs.procRunning = False
fftWorkerPool.join()
log.info("Threadpool Halted.")
log.info("Waiting for log-thread to halt.")
while logProc.is_alive():
if not fftDataQueue.empty():
fftDataQueue.get()
logProc.join()
log.info("Logging thread halted.")
log.info("stopping printing service")
ctrlNs.printerRun = False
if not printQueue.empty():
printQueue.get()
printProc.join()
print("Threads stopped.")
print("Stopping Shared Memory Manager!")
ctrlManager.shutdown()
print("Shutdown complete. Exiting.")
sys.exit()
class InternalSweepAcqThread(object):
log = logging.getLogger("Main.AcqProcess")
def __init__(self, printQueue):
self.printQueue = printQueue
logSetup.initLogging(printQ=printQueue)
self.calcScanBands()
if ACQ_TYPE != "real-time-sweeping":
raise ValueError("internalSweep module only supports 'real-time-sweeping' mode! Configured mode = {mode}".format(mode=ACQ_TYPE))
def calcScanBands(self):
if ACQ_SPAN < IF_WIDTH:
raise ValueError("Scan width is smaller then the IF bandwidth!")
if ACQ_SPAN == IF_WIDTH:
raise ValueError("Scan width is exactly the IF bandwith. Maybe use the real-time mode instead?")
sweepWidth = IF_WIDTH * (1-ACQ_OVERLAP)
bins = ACQ_SPAN/sweepWidth
sweepSteps = int(bins+0.5)
effectiveScanWidth = sweepWidth*sweepSteps
self.binFreqs = []
baseFreq = ACQ_FREQ - (effectiveScanWidth/2 + sweepWidth/2)
for x in xrange(1, sweepSteps+1):
self.binFreqs.append(baseFreq+x*sweepWidth)
self.binFreqIndice = 0
def retune(self):
self.sh.configureCenterSpan(center = self.binFreqs[self.binFreqIndice], span = IF_WIDTH)
self.binFreqIndice = (self.binFreqIndice + 1) % len(self.binFreqs)
def startAcquisition(self, dataQueue, plotQueue):
self.sh.configureAcquisition(ACQ_MODE, ACQ_Y_SCALE)
self.retune()
self.sh.configureLevel(ref = ACQ_REF_LEVEL_DB, atten = ACQ_ATTENUATION_DB)
self.sh.configureGain(gain = ACQ_GAIN_SETTING)
self.sh.configureSweepCoupling(rbw = ACQ_RBW, vbw = ACQ_VBW, sweepTime = ACQ_SWEEP_TIME_SECONDS, rbwType = "native", rejection = "no-spur-reject")
self.sh.configureWindow(window = ACQ_WINDOW_TYPE)
self.sh.configureProcUnits(units = ACQ_UNITS)
self.sh.configureTrigger(trigType = "none", edge = "rising-edge", level = 0, timeout = 5)
self.sh.initiate(mode = "real-time", flag = "ignored")
dataQueue.put({"settings" : self.sh.getCurrentAcquisitionSettings()})
plotQueue.put({"settings" : self.sh.getCurrentAcquisitionSettings()})
def sweepSource(self, dataQueues, ctrlNs):
dataQueue, plotQueue = dataQueues
from SignalHound import SignalHound
loop_timer = time.time()
print "Starting sweep-logger!"
loop_timer = time.time()
loops = 0
self.sh = SignalHound()
self.startAcquisition(dataQueue, plotQueue)
# Send the trace size to the acq thread so I can properly set up the data-log file
numPoints = self.sh.queryTraceInfo()["arr-size"]
dataQueue.put({"arrSize" : numPoints})
temperature = self.sh.getDeviceDiagnostics()["temperature"]
runningSum = np.array(())
runningSumItems = 0
startFreq = 0
while 1:
try:
trace = self.sh.fetchTrace()
traceInfo = self.sh.queryTraceInfo()
dataDict = {
"info": traceInfo,
"data": trace
}
acqInfo = dataDict["info"]
if runningSum.shape != dataDict["data"]["max"].shape:
runningSum = np.zeros_like(dataDict["data"]["max"])
runningSumItems = 0
startFreq = acqInfo["ret-start-freq"]
binSize = acqInfo["arr-bin-size"]
self.log.info("Running average array size changed! Either the system just started, or something is seriously wrong!")
changed = False
if startFreq != acqInfo["ret-start-freq"]:
changed = True
else:
runningSum += dataDict["data"]["max"]
runningSumItems += 1
# if we've reached the number of average items per output array, or the frequency has changed, requiring an early dump of the specra data.
if runningSumItems == NUM_AVERAGE or changed:
self.log.info("Running sum shape = %s, items = %s", runningSum.shape, runningSumItems)
# Divide down to the average
arr = runningSum / runningSumItems
# Build array to write out.
saveTime = time.time()
# self.log.info("Saving data record with timestamp %f", saveTime)
# Only write out to the file if we actually have data
if runningSumItems != 0:
dataQueue.put({"row" : (saveTime, startFreq, binSize, runningSumItems, arr)})
if plotQueue:
plotQueue.put({"row" : (saveTime, startFreq, binSize, runningSumItems, arr)})
runningSum = np.zeros_like(runningSum)
self.log.info("Estimated items in processing queue %s", dataQueue.qsize())
self.log.info("Running sum shape = %s, items = %s", runningSum.shape, runningSumItems)
runningSumItems = 0
# now = time.time()
# delta = now-loop_timer
# freq = 1 / (delta)
# self.log.info("Elapsed Time = %0.5f, Frequency = %s", delta, freq)
# loop_timer = now
# If we wrote the output because the current spectra has changed, we need to update the running acq info variables with the new frequencies.
if changed:
self.log.info("Retuned! Old freq = %s, new freq = %s", startFreq, acqInfo["ret-start-freq"])
runningSum += dataDict["data"]["max"]
startFreq = acqInfo["ret-start-freq"]
binSize = acqInfo["arr-bin-size"]
runningSumItems = 1
del(trace)
except Exception:
self.log.error("IOError in Acquisition Thread!")
self.log.error(traceback.format_exc())
dataQueue.put({"status" : "Error: Device interface craself.shed. Reinitializing"})
self.log.error("Resetting hardware!")
# self.sh.preset()
self.sh.forceClose()
try:
while 1:
self.log.warning("Trying to free python device handle")
del(self.sh)
except UnboundLocalError:
self.log.info("Handle freed?")
except AttributeError:
self.log.info("Handle freed?")
self.log.error("Hardware shut down, completely re-initializing device interface!")
# sys.exit()
self.log.info("Preparing to reset device.")
self.sh = SignalHound()
self.log.info("Performing hardware reset")
self.sh.preset()
self.log.info("Reset triggered. Waiting 5 seconds for device to restart.")
time.sleep(5)
self.log.info("Hardware reset. Reopening device.")
self.sh = SignalHound()
self.startAcquisition(dataQueue, dataQueue)
loops += 1
if loops % ACQ_BIN_SAMPLES == 0:
print("Should retune frontend!")
self.sh.abort()
self.startAcquisition(dataQueue, dataQueue)
# print("Current acq mode = ", self.sh.queryTraceInfo())
if loops % PRINT_LOOP_CNT == 0:
now = time.time()
delta = now-loop_timer
freq = 1 / (delta / PRINT_LOOP_CNT)
# self.log.info("Elapsed Time = %0.5f, Frequency = %s", delta, freq)
loop_timer = now
if loops % CAL_CHK_LOOP_CNT == 0:
diags = self.sh.getDeviceDiagnostics()
dataQueue.put({"status" : diags})
temptmp = diags["temperature"]
if abs(temperature - temptmp) > 2.0: # Temperature deviations of > 2° cause IF self.shifts. Therefore, we do a re-cal if they're detected
dataQueue.put({"status" : "Recalibrating IF"})
self.sh.selfCal()
self.startAcquisition(dataQueue, dataQueue)
self.log.warning("Temperature changed > 2.0 C. Delta is %f. Recalibrated!", abs(temperature - temptmp))
temperature = temptmp
else:
self.log.info("Temperature deviation = %f. Not doing recal, since drift < 2C", abs(temperature - temptmp))
if ctrlNs.run == False:
self.log.info("Stopping Acq-thread!")
break
self.sh.abort()
self.sh.closeDevice()
del(self.sh)
self.log.info("Acq-thread closing dataQueue!")
dataQueue.close()
dataQueue.join_thread()
plotQueue.close()
plotQueue.cancel_join_thread()
ctrlNs.acqRunning = False
self.log.info("Acq-thread exiting!")
self.printQueue.close()
self.printQueue.join_thread()
def sweepSource(dataQueues, ctrlNs, printQueue):
dataQueue, plotQueue = dataQueues
from SignalHound import SignalHound
logSetup.initLogging(printQ=printQueue)
loop_timer = time.time()
print "Starting sweep-logger!"
log = logging.getLogger("Main.AcqProcess")
loop_timer = time.time()
loops = 0
sh = SignalHound()
startAcquisition(sh, dataQueue, plotQueue)
# Send the trace size to the acq thread so I can properly set up the data-log file
numPoints = sh.queryTraceInfo()["arr-size"]
dataQueue.put({"arrSize": numPoints})
temperature = sh.getDeviceDiagnostics()["temperature"]
runningSum = np.array(())
runningSumItems = 0
startFreq = 0
while 1:
try:
trace = sh.fetchTrace()
traceInfo = sh.queryTraceInfo()
dataDict = {"info": traceInfo, "data": trace}
acqInfo = dataDict["info"]
if runningSum.shape != dataDict["data"]["max"].shape:
runningSum = np.zeros_like(dataDict["data"]["max"])
runningSumItems = 0
startFreq = acqInfo["ret-start-freq"]
binSize = acqInfo["arr-bin-size"]
log.info(
"Running average array size changed! Either the system just started, or something is seriously wrong!"
)
changed = False
if startFreq != acqInfo["ret-start-freq"]:
changed = True
else:
runningSum += dataDict["data"]["max"]
runningSumItems += 1
# if we've reached the number of average items per output array, or the frequency has changed, requiring an early dump of the specra data.
if runningSumItems == NUM_AVERAGE or changed:
# Divide down to the average
arr = runningSum / runningSumItems
# Build array to write out.
saveTime = time.time()
# log.info("Saving data record with timestamp %f", saveTime)
# Only write out to the file if we actually have data
if runningSumItems != 0:
dataQueue.put({
"row":
(saveTime, startFreq, binSize, runningSumItems, arr)
})
if plotQueue:
plotQueue.put({
"row": (saveTime, startFreq, binSize,
runningSumItems, arr)
})
del (trace)
runningSum = np.zeros_like(runningSum)
log.info("Estimated items in processing queue %s",
dataQueue.qsize())
log.info("Running sum shape = %s, items = %s",
runningSum.shape, runningSumItems)
runningSumItems = 0
# now = time.time()
# delta = now-loop_timer
# freq = 1 / (delta)
# log.info("Elapsed Time = %0.5f, Frequency = %s", delta, freq)
# loop_timer = now
# If we wrote the output because the current spectra has changed, we need to update the running acq info variables with the new frequencies.
if changed:
log.info("Retuned! Old freq = %s, new freq = %s",
startFreq, acqInfo["ret-start-freq"])
runningSum += dataDict["data"]["max"]
startFreq = acqInfo["ret-start-freq"]
binSize = acqInfo["arr-bin-size"]
runningSumItems = 1
except Exception:
log.error("IOError in Acquisition Thread!")
log.error(traceback.format_exc())
dataQueue.put(
{"status": "Error: Device interface crashed. Reinitializing"})
log.error("Resetting hardware!")
# sh.preset()
sh.forceClose()
try:
while 1:
log.warning("Freeing python device handle")
del (sh)
except UnboundLocalError:
pass
log.error(
"Hardware shut down, completely re-initializing device interface!"
)
# sys.exit()
sh = SignalHound()
startAcquisition(sh, dataQueue, plotQueue)
if loops % PRINT_LOOP_CNT == 0:
now = time.time()
delta = now - loop_timer
freq = 1 / (delta / PRINT_LOOP_CNT)
# log.info("Elapsed Time = %0.5f, Frequency = %s", delta, freq)
loop_timer = now
if loops % CAL_CHK_LOOP_CNT == 0:
diags = sh.getDeviceDiagnostics()
dataQueue.put({"status": diags})
temptmp = diags["temperature"]
if abs(
temperature - temptmp
) > 2.0: # Temperature deviations of > 2° cause IF shifts. Therefore, we do a re-cal if they're detected
dataQueue.put({"status": "Recalibrating IF"})
sh.selfCal()
startAcquisition(sh, dataQueue, plotQueue)
log.warning(
"Temperature changed > 2.0 C. Delta is %f. Recalibrated!",
abs(temperature - temptmp))
temperature = temptmp
else:
log.info(
"Temperature deviation = %f. Not doing recal, since drift < 2C",
abs(temperature - temptmp))
loops += 1
if ctrlNs.run == False:
log.info("Stopping Acq-thread!")
break
sh.abort()
sh.closeDevice()
del (sh)
log.info("Acq-thread closing dataQueue!")
dataQueue.close()
dataQueue.join_thread()
if plotQueue:
plotQueue.close()
plotQueue.cancel_join_thread()
ctrlNs.acqRunning = False
log.info("Acq-thread exiting!")
printQueue.close()
printQueue.join_thread()
class InternalSweepAcqThread(object):
log = logging.getLogger("Main.AcqProcess")
def __init__(self, printQueue):
self.printQueue = printQueue
logSetup.initLogging(printQ=printQueue)
self.calcScanBands()
if ACQ_TYPE != "real-time-sweeping":
raise ValueError(
"internalSweep module only supports 'real-time-sweeping' mode! Configured mode = {mode}"
.format(mode=ACQ_TYPE))
def calcScanBands(self):
if ACQ_SPAN < IF_WIDTH:
raise ValueError("Scan width is smaller then the IF bandwidth!")
if ACQ_SPAN == IF_WIDTH:
raise ValueError(
"Scan width is exactly the IF bandwith. Maybe use the real-time mode instead?"
)
sweepWidth = IF_WIDTH * (1 - ACQ_OVERLAP)
bins = ACQ_SPAN / sweepWidth
sweepSteps = int(bins + 0.5)
effectiveScanWidth = sweepWidth * sweepSteps
self.binFreqs = []
baseFreq = ACQ_FREQ - (effectiveScanWidth / 2 + sweepWidth / 2)
for x in xrange(1, sweepSteps + 1):
self.binFreqs.append(baseFreq + x * sweepWidth)
self.binFreqIndice = 0
def retune(self):
self.sh.configureCenterSpan(center=self.binFreqs[self.binFreqIndice],
span=IF_WIDTH)
self.binFreqIndice = (self.binFreqIndice + 1) % len(self.binFreqs)
def startAcquisition(self, dataQueue, plotQueue):
self.sh.configureAcquisition(ACQ_MODE, ACQ_Y_SCALE)
self.retune()
self.sh.configureLevel(ref=ACQ_REF_LEVEL_DB, atten=ACQ_ATTENUATION_DB)
self.sh.configureGain(gain=ACQ_GAIN_SETTING)
self.sh.configureSweepCoupling(rbw=ACQ_RBW,
vbw=ACQ_VBW,
sweepTime=ACQ_SWEEP_TIME_SECONDS,
rbwType="native",
rejection="no-spur-reject")
self.sh.configureWindow(window=ACQ_WINDOW_TYPE)
self.sh.configureProcUnits(units=ACQ_UNITS)
self.sh.configureTrigger(trigType="none",
edge="rising-edge",
level=0,
timeout=5)
self.sh.initiate(mode="real-time", flag="ignored")
dataQueue.put({"settings": self.sh.getCurrentAcquisitionSettings()})
plotQueue.put({"settings": self.sh.getCurrentAcquisitionSettings()})
def sweepSource(self, dataQueues, ctrlNs):
dataQueue, plotQueue = dataQueues
from SignalHound import SignalHound
loop_timer = time.time()
print "Starting sweep-logger!"
loop_timer = time.time()
loops = 0
self.sh = SignalHound()
self.startAcquisition(dataQueue, plotQueue)
# Send the trace size to the acq thread so I can properly set up the data-log file
numPoints = self.sh.queryTraceInfo()["arr-size"]
dataQueue.put({"arrSize": numPoints})
temperature = self.sh.getDeviceDiagnostics()["temperature"]
runningSum = np.array(())
runningSumItems = 0
startFreq = 0
while 1:
try:
trace = self.sh.fetchTrace()
traceInfo = self.sh.queryTraceInfo()
dataDict = {"info": traceInfo, "data": trace}
acqInfo = dataDict["info"]
if runningSum.shape != dataDict["data"]["max"].shape:
runningSum = np.zeros_like(dataDict["data"]["max"])
runningSumItems = 0
startFreq = acqInfo["ret-start-freq"]
binSize = acqInfo["arr-bin-size"]
self.log.info(
"Running average array size changed! Either the system just started, or something is seriously wrong!"
)
changed = False
if startFreq != acqInfo["ret-start-freq"]:
changed = True
else:
runningSum += dataDict["data"]["max"]
runningSumItems += 1
# if we've reached the number of average items per output array, or the frequency has changed, requiring an early dump of the specra data.
if runningSumItems == NUM_AVERAGE or changed:
self.log.info("Running sum shape = %s, items = %s",
runningSum.shape, runningSumItems)
# Divide down to the average
arr = runningSum / runningSumItems
# Build array to write out.
saveTime = time.time()
# self.log.info("Saving data record with timestamp %f", saveTime)
# Only write out to the file if we actually have data
if runningSumItems != 0:
dataQueue.put({
"row": (saveTime, startFreq, binSize,
runningSumItems, arr)
})
if plotQueue:
plotQueue.put({
"row": (saveTime, startFreq, binSize,
runningSumItems, arr)
})
runningSum = np.zeros_like(runningSum)
self.log.info("Estimated items in processing queue %s",
dataQueue.qsize())
self.log.info("Running sum shape = %s, items = %s",
runningSum.shape, runningSumItems)
runningSumItems = 0
# now = time.time()
# delta = now-loop_timer
# freq = 1 / (delta)
# self.log.info("Elapsed Time = %0.5f, Frequency = %s", delta, freq)
# loop_timer = now
# If we wrote the output because the current spectra has changed, we need to update the running acq info variables with the new frequencies.
if changed:
self.log.info("Retuned! Old freq = %s, new freq = %s",
startFreq, acqInfo["ret-start-freq"])
runningSum += dataDict["data"]["max"]
startFreq = acqInfo["ret-start-freq"]
binSize = acqInfo["arr-bin-size"]
runningSumItems = 1
del (trace)
except Exception:
self.log.error("IOError in Acquisition Thread!")
self.log.error(traceback.format_exc())
dataQueue.put({
"status":
"Error: Device interface craself.shed. Reinitializing"
})
self.log.error("Resetting hardware!")
# self.sh.preset()
self.sh.forceClose()
try:
while 1:
self.log.warning("Trying to free python device handle")
del (self.sh)
except UnboundLocalError:
self.log.info("Handle freed?")
except AttributeError:
self.log.info("Handle freed?")
self.log.error(
"Hardware shut down, completely re-initializing device interface!"
)
# sys.exit()
self.log.info("Preparing to reset device.")
self.sh = SignalHound()
self.log.info("Performing hardware reset")
self.sh.preset()
self.log.info(
"Reset triggered. Waiting 5 seconds for device to restart."
)
time.sleep(5)
self.log.info("Hardware reset. Reopening device.")
self.sh = SignalHound()
self.startAcquisition(dataQueue, dataQueue)
loops += 1
if loops % ACQ_BIN_SAMPLES == 0:
print("Should retune frontend!")
self.sh.abort()
self.startAcquisition(dataQueue, dataQueue)
# print("Current acq mode = ", self.sh.queryTraceInfo())
if loops % PRINT_LOOP_CNT == 0:
now = time.time()
delta = now - loop_timer
freq = 1 / (delta / PRINT_LOOP_CNT)
# self.log.info("Elapsed Time = %0.5f, Frequency = %s", delta, freq)
loop_timer = now
if loops % CAL_CHK_LOOP_CNT == 0:
diags = self.sh.getDeviceDiagnostics()
dataQueue.put({"status": diags})
temptmp = diags["temperature"]
if abs(
temperature - temptmp
) > 2.0: # Temperature deviations of > 2° cause IF self.shifts. Therefore, we do a re-cal if they're detected
dataQueue.put({"status": "Recalibrating IF"})
self.sh.selfCal()
self.startAcquisition(dataQueue, dataQueue)
self.log.warning(
"Temperature changed > 2.0 C. Delta is %f. Recalibrated!",
abs(temperature - temptmp))
temperature = temptmp
else:
self.log.info(
"Temperature deviation = %f. Not doing recal, since drift < 2C",
abs(temperature - temptmp))
if ctrlNs.run == False:
self.log.info("Stopping Acq-thread!")
break
self.sh.abort()
self.sh.closeDevice()
del (self.sh)
self.log.info("Acq-thread closing dataQueue!")
dataQueue.close()
dataQueue.join_thread()
plotQueue.close()
plotQueue.cancel_join_thread()
ctrlNs.acqRunning = False
self.log.info("Acq-thread exiting!")
self.printQueue.close()
self.printQueue.join_thread()
