def CCDTrig_open(freq, data):
taskHandle = tp.TaskHandle()
taskCounter = tp.TaskHandle()
nsamples = len(data)
idata = data.astype(tp.uInt32)
startdata = N.array((5,5),dtype=tp.uInt32)
try:
daq.DAQmxCreateTask("",taskCounter)
daq.DAQmxCreateCOPulseChanFreq(taskCounter,"Dev1/ctr0","",daq.DAQmx_Val_Hz,daq.DAQmx_Val_Low,0.0,freq,0.50)
daq.DAQmxCfgImplicitTiming(taskCounter,daq.DAQmx_Val_ContSamps,1000)
# print "taskCounter Value", taskCounter.value
## Create Digital Channel
daq.DAQmxCreateTask("",taskHandle)
# print "taskHandle Value", taskHandle.value
daq.DAQmxCreateDOChan(taskHandle,"Dev1/port0/line0:7","",daq.DAQmx_Val_ChanForAllLines)
daq.DAQmxCfgSampClkTiming(taskHandle,"Ctr0InternalOutput",freq,daq.DAQmx_Val_Rising,daq.DAQmx_Val_FiniteSamps,nsamples)
## Register done events (error checking)
# q = daq.DAQmxRegisterDoneEvent(taskHandle,0,None,None)
# print q,'c'
# q = daq.DAQmxRegisterDoneEvent(taskCounter,0,None,None)
# print q,'d'
## write startup values
daq.DAQmxWriteDigitalU32(taskHandle,2,0,10.0,cnst.DAQmx_Val_GroupByChannel,startdata,None,None)
daq.DAQmxStartTask(taskHandle)
daq.DAQmxStopTask(taskHandle)
## load trigger sequence
daq.DAQmxWriteDigitalU32(taskHandle,nsamples,0,10.0,cnst.DAQmx_Val_GroupByChannel,idata,None,None)
print("Data Written\n")
## start counter
daq.DAQmxStartTask(taskCounter)
return taskHandle,taskCounter
except:
errBuff=tp.create_string_buffer(b"",2048)
daq.DAQmxGetExtendedErrorInfo(errBuff,2048)
print(errBuff.value)
def setVoltage_2(val):
try:
taskHandle = tp.TaskHandle()
daq.DAQmxCreateTask("",taskHandle)
# print "taskHandle Value", taskHandle.value
daq.DAQmxCreateAOVoltageChan(taskHandle,"Dev1/ao1","",0.0,10.0,cnst.DAQmx_Val_Volts,"")
daq.DAQmxStartTask(taskHandle)
daq.DAQmxWriteAnalogScalarF64(taskHandle,1,5.0,tp.float64(val),None)
if not taskHandle == 0 :
# print "Stopping Tasks\n"
daq.DAQmxStopTask(taskHandle)
daq.DAQmxClearTask(taskHandle)
return 0
except:
errBuff=tp.create_string_buffer(b"",2048)
daq.DAQmxGetExtendedErrorInfo(errBuff,2048)
print(errBuff.value)
def getVoltage():
try:
taskHandle = tp.TaskHandle()
daq.DAQmxCreateTask("",taskHandle)
# print "taskHandle Value", taskHandle.value
val = tp.float64()
daq.DAQmxCreateAIVoltageChan(taskHandle,"Dev1/ai0","",cnst.DAQmx_Val_RSE,0.0,10.0,cnst.DAQmx_Val_Volts,"")
daq.DAQmxStartTask(taskHandle)
daq.DAQmxReadAnalogScalarF64(taskHandle,5.0,daq.byref(val),None)
if not taskHandle == 0 :
# print "Stopping Tasks\n"
daq.DAQmxStopTask(taskHandle)
daq.DAQmxClearTask(taskHandle)
return val.value
except:
errBuff=tp.create_string_buffer(b"",2048)
daq.DAQmxGetExtendedErrorInfo(errBuff,2048)
print(errBuff.value)