def GetAO(NoDev, NoSubDev, NoChannel):
#Using range 0
(iUnit, dMin, dMax, iMaxData) = meDriver.meQueryRangeInfo(NoDev, NoSubDev, 0)
#Read from sub-device
SingleDict = {
'Device': NoDev,
'Subdevice': NoSubDev,
'Channel': NoChannel,
'Dir': meDriver.ME_DIR_INPUT,
'Value': 0,
'TimeOut': meDriver.ME_VALUE_NOT_USED,
'Flags': meDriver.ME_IO_SINGLE_TYPE_NO_FLAGS,
'Errno': 0
}
SingleList = [SingleDict]
meDriver.meIOSingle(SingleList, meDriver.ME_IO_SINGLE_NO_FLAGS)
print "Device [%d:%d/%d] GET:%f(0x%x)" % (NoDev, NoSubDev, NoChannel, meDriver.meUtilityDigitalToPhysical(dMin, dMax, iMaxData, SingleList[0]['Value'], meDriver.ME_MODULE_TYPE_MULTISIG_NONE, 0), SingleList[0]['Value'])
def GetStreamAI(NoDev, NoSubDev):
DataBlockSize = 0x10000
DataReadSize = 0x1000
AIBufSize = 0x400
#Preaparing trigger list
TrigList = {'AcqStartTrigType' : meDriver.ME_TRIG_TYPE_SW,
'AcqStartTrigEdge' : meDriver.ME_TRIG_EDGE_NONE,
'AcqStartTrigChan' : meDriver.ME_TRIG_CHAN_DEFAULT,
'AcqStartTicks' : long(66),
'ScanStartTrigType' : meDriver.ME_TRIG_TYPE_TIMER,
'ScanStartTicks' : long(66),
'ConvStartTrigType' : meDriver.ME_TRIG_TYPE_TIMER,
'ConvStartTicks' : long(33000), #1kHz
'ScanStopTrigType' : meDriver.ME_TRIG_TYPE_NONE,
'ScanStopCount' : 0,
'AcqStopTrigType' : meDriver.ME_TRIG_TYPE_COUNT,
'AcqStopCount' : DataBlockSize,
'Flags' : meDriver.ME_IO_STREAM_TRIGGER_TYPE_NO_FLAGS}
#Preaparing config list
ConfList = []
ConfEntry = {'Channel': 0,
'StreamConfig': 0,
'Ref': meDriver.ME_REF_AI_GROUND,
'Flags': meDriver.ME_IO_STREAM_CONFIG_TYPE_NO_FLAGS}
ConfList.append(ConfEntry)
#Preaparing start list
StartList = []
StartEntry = {'Device': NoDev,
'Subdevice': NoSubDev,
'StartMode': meDriver.ME_START_MODE_BLOCKING, #This is returning when stream STARTS!
'TimeOut': 0,
'Flags': meDriver.ME_IO_STREAM_START_TYPE_NO_FLAGS,
'Errno': 0}
StartList.append(StartEntry)
#Preaparing stop list
StopList = []
StopEntry = {'Device': NoDev,
'Subdevice': NoSubDev,
'StopMode': meDriver.ME_STOP_MODE_IMMEDIATE,
'Flags': meDriver.ME_IO_STREAM_STOP_TYPE_NO_FLAGS,
'Errno': 0}
StopList.append(StopEntry)
#Using range 0
(iUnit, dMin, dMax, iMaxData) = meDriver.meQueryRangeInfo(NoDev, NoSubDev, 0)
meDriver.meIOResetSubdevice(NoDev, NoSubDev, meDriver.ME_VALUE_NOT_USED)
#Configure
print "Configure AI"
meDriver.meIOStreamConfig(NoDev, NoSubDev, ConfList, TrigList, AIBufSize, meDriver.ME_IO_STREAM_CONFIG_NO_FLAGS)
print "Start AI"
meDriver.meIOStreamStart(StartList, meDriver.ME_IO_STREAM_START_NO_FLAGS)
print "Work"
totalCount = 0
while (totalCount<DataBlockSize):
#Read data (blocking mode)
AIBufferCount=AIBufSize
AIBuffer = meDriver.meIOStreamRead(NoDev, NoSubDev, meDriver.ME_READ_MODE_BLOCKING, AIBufferCount, meDriver.ME_IO_STREAM_READ_NO_FLAGS)
#Show some samples
print "\tSample 0x%x => %f" % (totalCount, meDriver.meUtilityDigitalToPhysical( dMin, dMax, iMaxData, AIBuffer[0], meDriver.ME_MODULE_TYPE_MULTISIG_NONE, 0))
totalCount = totalCount + len(AIBuffer)
print "Stop AI"
meDriver.meIOStreamStop(StopList, meDriver.ME_IO_STREAM_STOP_NO_FLAGS)
print "AI stopped."
