def main(period):
taskHandle = daqmx.TaskHandle()
daqmx.CreateTask("", taskHandle)
physicalChannel = "Dev1/ao0"
t = np.linspace(0, 2 * pi / period, 1000)
data = 2 * np.sin(t)
daqmx.CreateAOVoltageChan(taskHandle, physicalChannel, "", -10.0, 10.0,
daqmx.Val_Volts, None)
daqmx.CfgSampClkTiming(taskHandle, "", 1000.0, daqmx.Val_Rising,
daqmx.Val_ContSamps, 1000)
daqmx.WriteAnalogF64(taskHandle, 1000, 0, 10.0, daqmx.Val_GroupByChannel,
data)
daqmx.StartTask(taskHandle)
for n in range(100):
time.sleep(0.3)
daqmx.StopTask(taskHandle)
daqmx.ClearTask(taskHandle)
def stop_DAQmx(self):
daqmx.StopTask(self.AOtask)
daqmx.StopTask(self.AItask)
daqmx.ClearTask(self.AItask)
daqmx.ClearTask(self.AOtask)
def stop(self):
daqmx.StopTask(self.handle)
if self.autolog:
self.autolog_file_object.close()
daqmx.CreateAOVoltageChan(AOtaskHandle, "Dev1/ao0", "", -10.0, 10.0,
daqmx.Val_Volts, None)
daqmx.CfgSampClkTiming(AOtaskHandle, "", sr, daqmx.Val_Rising,
daqmx.Val_ContSamps, 1000)
daqmx.CreateAIVoltageChan(AItaskHandle, "Dev1/ai1", "", daqmx.Val_Diff, -10.0,
10.0, daqmx.Val_Volts, None)
daqmx.CfgSampClkTiming(AItaskHandle, "", sr, daqmx.Val_Rising,
daqmx.Val_ContSamps, 1000)
written = daqmx.WriteAnalogF64(AOtaskHandle, 1000, 0, 10.0,
daqmx.Val_GroupByChannel, data)
dataread, nread = daqmx.ReadAnalogF64(AItaskHandle, 1000, 10.0,
daqmx.Val_GroupByChannel, 1000, 1)
daqmx.StartTask(AOtaskHandle)
daqmx.StartTask(AItaskHandle)
print written, "samples written"
print nread, "samples read"
plt.plot(dataread)
daqmx.StopTask(AItaskHandle)
daqmx.ClearTask(AItaskHandle)
daqmx.StopTask(AOtaskHandle)
daqmx.ClearTask(AOtaskHandle)
def stopdaq(self):
daqmx.StopTask(self.analogtask)
daqmx.StopTask(self.carpostask)
daqmx.StopTask(self.turbangtask)
diTaskHandle = daqmx.TaskHandle()
daqmx.CreateTask("", aiTaskHandle)
daqmx.CreateAIVoltageChan(aiTaskHandle, "Dev1/ai0", "", daqmx.Val_Diff, 0.0,
10.0, daqmx.Val_Volts)
daqmx.CfgSampClkTiming(aiTaskHandle, "", 100.0, daqmx.Val_Rising,
daqmx.Val_ContSamps, 1000)
trigname = daqmx.GetTerminalNameWithDevPrefix(aiTaskHandle, "ai/SampleClock")
daqmx.CreateTask("", diTaskHandle)
daqmx.CreateDIChan(diTaskHandle, "Dev1/port0", "", daqmx.Val_ChanForAllLines)
daqmx.CfgSampClkTiming(diTaskHandle, trigname, 100.0, daqmx.Val_Rising,
daqmx.Val_ContSamps, 1000)
daqmx.StartTask(diTaskHandle)
daqmx.StartTask(aiTaskHandle)
adata = daqmx.ReadAnalogF64(aiTaskHandle, 1000, 10.0, daqmx.Val_GroupByChannel,
1000, 1)
ddata = daqmx.ReadDigitalU32(diTaskHandle, 1000, 10.0,
daqmx.Val_GroupByChannel, 1000, 1)
print adata
print ddata
daqmx.StopTask(diTaskHandle)
daqmx.StopTask(aiTaskHandle)
daqmx.ClearTask(diTaskHandle)
daqmx.ClearTask(aiTaskHandle)