diff options
Diffstat (limited to 'labjackStreamTest.py')
| -rw-r--r-- | labjackStreamTest.py | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/labjackStreamTest.py b/labjackStreamTest.py deleted file mode 100644 index c5368ea..0000000 --- a/labjackStreamTest.py +++ /dev/null @@ -1,167 +0,0 @@ -import sys -import traceback -import time # For sleep, clock, time and perf_counter -from datetime import datetime - -import u3 -import u6 -import ue9 - -dacAddress = 5000 # DAC Modbus address - -# MAX_REQUESTS is the number of packets to be read. -MAX_REQUESTS = 75 -# SCAN_FREQUENCY is the scan frequency of stream mode in Hz -SCAN_FREQUENCY = 1000 - -d = None - -############################################################################### -# U3 -# Uncomment these lines to stream from a U3 -############################################################################### -''' -# At high frequencies ( >5 kHz), the number of samples will be MAX_REQUESTS -# times 48 (packets per request) times 25 (samples per packet). -d = u3.U3() - -# To learn the if the U3 is an HV -d.configU3() - -# For applying the proper calibration to readings. -d.getCalibrationData() - -# Set the FIO0 and FIO1 to Analog (d3 = b00000011) -d.configIO(FIOAnalog=3) - -print("Configuring U3 stream") -d.streamConfig(NumChannels=2, PChannels=[0, 1], NChannels=[31, 31], Resolution=3, ScanFrequency=SCAN_FREQUENCY) -''' - -############################################################################### -# U6 -# Uncomment these lines to stream from a U6 -############################################################################### -''' -# At high frequencies ( >5 kHz), the number of samples will be MAX_REQUESTS -# times 48 (packets per request) times 25 (samples per packet). -d = u6.U6() - -# For applying the proper calibration to readings. -d.getCalibrationData() - -print("Configuring U6 stream") - -d.streamConfig(NumChannels=2, ChannelNumbers=[0, 1], ChannelOptions=[0, 0], SettlingFactor=1, ResolutionIndex=1, ScanFrequency=SCAN_FREQUENCY) -''' - -############################################################################### -# UE9 -# Uncomment these lines to stream from a UE9 -############################################################################### -# At 96 Hz or higher frequencies, the number of samples will be MAX_REQUESTS -# times 8 (packets per request) times 16 (samples per packet). -# Currently over ethernet packets per request is 1. -d = ue9.UE9() -#d = ue9.UE9(ethernet=True, ipAddress="192.168.1.209") # Over TCP/ethernet connect to UE9 with IP address 192.168.1.209 - -# For applying the proper calibration to readings. -c=d.getCalibrationData() - -# by evmik -# fixing missing slope for gain '0' -c['AINSlopes']['0']= 0.0000775030 - - -print("Configuring UE9 stream") - -d.streamConfig(NumChannels=4, ChannelNumbers=[0, 1, 2, 3], ChannelOptions=[0, 0, 0, 0], SettlingTime=0, Resolution=12, ScanFrequency=SCAN_FREQUENCY) -''' -''' - -if d is None: - print("""Configure a device first. -Please open streamTest.py in a text editor and uncomment the lines for your device. - -Exiting...""") - sys.exit(0) - -try: - print("Start stream") - d.writeRegister(dacAddress, 2.05) - # d.singleIO(IOType=5, Channel=0, DAC=0) - dacNumber=0 - bits = d.voltageToDACBits(1.4, dacNumber = dacNumber) - out=d.singleIO(IOType=5, Channel=dacNumber, DAC=bits) - print(out) - - d.streamStart() - start = datetime.now() - print("Start time is %s" % start) - - missed = 0 - dataCount = 0 - packetCount = 0 - v=0.1 - - for r in d.streamData(): - # d.writeRegister(dacAddress, 0.05*dataCount) - v=v+0.1 - print(v) - bits = d.voltageToDACBits(v, dacNumber = dacNumber) - out=d.singleIO(IOType=5, Channel=dacNumber, DAC=bits) - if r is not None: - # Our stop condition - if dataCount >= MAX_REQUESTS: - break - - if r["errors"] != 0: - print("Errors counted: %s ; %s" % (r["errors"], datetime.now())) - - if r["numPackets"] != d.packetsPerRequest: - print("----- UNDERFLOW : %s ; %s" % - (r["numPackets"], datetime.now())) - - if r["missed"] != 0: - missed += r['missed'] - print("+++ Missed %s" % r["missed"]) - - if r["firstPacket"] != packetCount % 256: - print("----- Overflow skipping packets : expected %s got %s ; %s" % - (packetCount, r["firstPacket"], datetime.now())) - - # Comment out these prints and do something with r - print("Average of %s AIN0, %s AIN1 readings: %s, %s" % - (len(r["AIN0"]), len(r["AIN1"]), sum(r["AIN0"])/len(r["AIN0"]), sum(r["AIN1"])/len(r["AIN1"]))) - - dataCount += 1 - packetCount += r['numPackets'] - else: - # Got no data back from our read. - # This only happens if your stream isn't faster than the USB read - # timeout, ~1 sec. - print("No data ; %s" % datetime.now()) -except: - print("".join(i for i in traceback.format_exc())) -finally: - stop = datetime.now() - d.streamStop() - print("Stream stopped.\n") - d.close() - - sampleTotal = packetCount * d.streamSamplesPerPacket - - scanTotal = sampleTotal / 2 # sampleTotal / NumChannels - print("%s requests with %s packets per request with %s samples per packet = %s samples total." % - (dataCount, (float(packetCount)/dataCount), d.streamSamplesPerPacket, sampleTotal)) - print("%s samples were lost due to errors." % missed) - sampleTotal -= missed - print("Adjusted number of samples = %s" % sampleTotal) - - runTime = (stop-start).seconds + float((stop-start).microseconds)/1000000 - print("The experiment took %s seconds." % runTime) - print("Actual Scan Rate = %s Hz" % SCAN_FREQUENCY) - print("Timed Scan Rate = %s scans / %s seconds = %s Hz" % - (scanTotal, runTime, float(scanTotal)/runTime)) - print("Timed Sample Rate = %s samples / %s seconds = %s Hz" % - (sampleTotal, runTime, float(sampleTotal)/runTime)) |