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OScNIDAQDevice.c
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OScNIDAQDevice.c
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/* Generic operation on NI DAQ properties */
/* that are not tied to specific DAQ devices or NIDAQmx functions */
#include "OScNIDAQ.h"
#include "OScNIDAQDevicePrivate.h"
#include <NIDAQmx.h>
#include <string.h>
#include <Windows.h>
// Forward declaration
static OScDev_DeviceImpl DeviceImpl;
static OScDev_Error NIDAQGetModelName(const char **name) {
*name = "OpenScan-NIDAQ";
return OScDev_OK;
}
static OScDev_Error NIDAQEnumerateInstances(OScDev_PtrArray **devices) {
OScDev_RichError *err = EnumerateInstances(devices, &DeviceImpl);
return OScDev_Error_ReturnAsCode(err);
}
static OScDev_Error NIDAQReleaseInstance(OScDev_Device *device) {
ss8_destroy(&GetData(device)->deviceName);
ss8_destroy(&GetData(device)->aiPhysChans);
free(GetData(device));
return OScDev_OK;
}
static OScDev_Error NIDAQGetName(OScDev_Device *device, char *name) {
ss8_copy_to_cstr(&GetData(device)->deviceName, name, OScDev_MAX_STR_SIZE);
return OScDev_OK;
}
static OScDev_Error NIDAQOpen(OScDev_Device *device) {
int32 nierr = DAQmxResetDevice(
ss8_cstr(&GetData(device)->deviceName)); // TODO wrong function
if (nierr) {
OScDev_RichError *err = CreateDAQmxError(nierr);
ss8str msg;
ss8_init_copy_cstr(&msg, "Cannot reset NI DAQ card ");
ss8_cat(&msg, &GetData(device)->deviceName);
OScDev_RichError *rerr = OScDev_Error_Wrap(err, ss8_cstr(&msg));
ss8_destroy(&msg);
return OScDev_Error_ReturnAsCode(rerr);
}
return OScDev_OK;
}
static OScDev_Error NIDAQClose(OScDev_Device *device) {
StopAcquisitionAndWait(device);
return OScDev_OK;
}
static OScDev_Error NIDAQHasClock(OScDev_Device *device, bool *hasClock) {
*hasClock = true;
return OScDev_OK;
}
static OScDev_Error NIDAQHasScanner(OScDev_Device *device, bool *hasScanner) {
*hasScanner = true;
return OScDev_OK;
}
static OScDev_Error NIDAQHasDetector(OScDev_Device *device,
bool *hasDetector) {
*hasDetector = true;
return OScDev_OK;
}
static OScDev_Error NIDAQGetPixelRates(OScDev_Device *device,
OScDev_NumRange **pixelRatesHz) {
static const double ratesMHz[] = {
0.0500, 0.1000, 0.1250, 0.2000, 0.2500,
0.4000, 0.5000, 0.6250, 1.0000, 1.2500,
0.0 // End mark
};
*pixelRatesHz = OScDev_NumRange_CreateDiscrete();
for (size_t i = 0; ratesMHz[i] != 0.0; ++i) {
OScDev_NumRange_AppendDiscrete(*pixelRatesHz, 1e6 * ratesMHz[i]);
}
return OScDev_OK;
}
static OScDev_Error NIDAQGetResolutions(OScDev_Device *device,
OScDev_NumRange **resolutions) {
*resolutions = OScDev_NumRange_CreateDiscrete();
OScDev_NumRange_AppendDiscrete(*resolutions, 256);
OScDev_NumRange_AppendDiscrete(*resolutions, 512);
OScDev_NumRange_AppendDiscrete(*resolutions, 1024);
OScDev_NumRange_AppendDiscrete(*resolutions, 2048);
return OScDev_OK;
}
static OScDev_Error NIDAQGetZoomFactors(OScDev_Device *device,
OScDev_NumRange **zooms) {
*zooms = OScDev_NumRange_CreateContinuous(0.2, 20.0);
return OScDev_OK;
}
static OScDev_Error NIDAQIsROIScanSupported(OScDev_Device *device,
bool *supported) {
*supported = true;
return OScDev_OK;
}
// Same as OpenScanDAQ::GetNumberOfChannels()
static OScDev_Error NIDAQGetNumberOfChannels(OScDev_Device *device,
uint32_t *nChannels) {
*nChannels = GetNumberOfEnabledChannels(device);
return OScDev_OK;
}
static OScDev_Error NIDAQGetBytesPerSample(OScDev_Device *device,
uint32_t *bytesPerSample) {
*bytesPerSample = 2;
return OScDev_OK;
}
static OScDev_Error NIDAQArm(OScDev_Device *device, OScDev_Acquisition *acq) {
bool useClock, useScanner, useDetector;
OScDev_Acquisition_IsClockRequested(acq, &useClock);
OScDev_Acquisition_IsScannerRequested(acq, &useScanner);
OScDev_Acquisition_IsDetectorRequested(acq, &useDetector);
// assume scanner is always enabled
if (!useClock || !useScanner)
return OScDev_Error_ReturnAsCode(
OScDev_Error_Create("Unsupported Operation"));
OScDev_TriggerSource clockStartTriggerSource;
OScDev_Acquisition_GetClockStartTriggerSource(acq,
&clockStartTriggerSource);
if (clockStartTriggerSource != OScDev_TriggerSource_Software)
return OScDev_Error_ReturnAsCode(
OScDev_Error_Create("Unsupported Operation"));
OScDev_ClockSource clockSource;
OScDev_Acquisition_GetClockSource(acq, &clockSource);
if (clockSource != OScDev_ClockSource_Internal)
return OScDev_Error_ReturnAsCode(
OScDev_Error_Create("Unsupported Operation"));
// what if we use external line clock to trigger acquisition?
if (useDetector) {
// arm scanner, detector, and clock
GetData(device)->scannerOnly = false;
} else {
// arm scanner and clock
GetData(device)->scannerOnly = true;
}
OScDev_RichError *err;
CRITICAL_SECTION *mutex = &GetData(device)->acquisition.mutex;
EnterCriticalSection(mutex);
{
if (GetData(device)->acquisition.running) {
// TODO Error should be "already armed"
LeaveCriticalSection(mutex);
return OScDev_Error_ReturnAsCode(
OScDev_Error_Create("Device already armed"));
}
GetData(device)->acquisition.acquisition = acq;
GetData(device)->acquisition.stopRequested = false;
GetData(device)->acquisition.running = true;
GetData(device)->acquisition.armed = false;
GetData(device)->acquisition.started = false;
}
LeaveCriticalSection(mutex);
err = ReconfigDAQ(device, acq);
if (err)
goto error;
EnterCriticalSection(&(GetData(device)->acquisition.mutex));
{ GetData(device)->acquisition.armed = true; }
LeaveCriticalSection(&(GetData(device)->acquisition.mutex));
return OScDev_OK;
error:
EnterCriticalSection(mutex);
{
GetData(device)->acquisition.running = false;
GetData(device)->acquisition.acquisition = NULL;
}
LeaveCriticalSection(mutex);
return OScDev_Error_ReturnAsCode(err);
}
static OScDev_Error NIDAQStart(OScDev_Device *device) {
EnterCriticalSection(&(GetData(device)->acquisition.mutex));
{
if (!GetData(device)->acquisition.running ||
!GetData(device)->acquisition.armed) {
LeaveCriticalSection(&(GetData(device)->acquisition.mutex));
return OScDev_Error_Not_Armed;
}
if (GetData(device)->acquisition.started) {
LeaveCriticalSection(&(GetData(device)->acquisition.mutex));
return OScDev_Error_Acquisition_Running;
}
GetData(device)->acquisition.started = true;
}
LeaveCriticalSection(&(GetData(device)->acquisition.mutex));
return OScDev_Error_ReturnAsCode(RunAcquisitionLoop(device));
}
static OScDev_Error NIDAQStop(OScDev_Device *device) {
return OScDev_Error_ReturnAsCode(StopAcquisitionAndWait(device));
}
static OScDev_Error NIDAQIsRunning(OScDev_Device *device, bool *isRunning) {
return OScDev_Error_ReturnAsCode(IsAcquisitionRunning(device, isRunning));
}
static OScDev_Error NIDAQWait(OScDev_Device *device) {
return OScDev_Error_ReturnAsCode(WaitForAcquisitionToFinish(device));
}
static OScDev_DeviceImpl DeviceImpl = {
.GetModelName = NIDAQGetModelName,
.EnumerateInstances = NIDAQEnumerateInstances,
.ReleaseInstance = NIDAQReleaseInstance,
.GetName = NIDAQGetName,
.Open = NIDAQOpen,
.Close = NIDAQClose,
.HasClock = NIDAQHasClock,
.HasScanner = NIDAQHasScanner,
.HasDetector = NIDAQHasDetector,
.MakeSettings = NIDAQMakeSettings,
.GetPixelRates = NIDAQGetPixelRates,
.GetResolutions = NIDAQGetResolutions,
.GetZoomFactors = NIDAQGetZoomFactors,
.IsROIScanSupported = NIDAQIsROIScanSupported,
.GetNumberOfChannels = NIDAQGetNumberOfChannels,
.GetBytesPerSample = NIDAQGetBytesPerSample,
.Arm = NIDAQArm,
.Start = NIDAQStart,
.Stop = NIDAQStop,
.IsRunning = NIDAQIsRunning,
.Wait = NIDAQWait,
};
static OScDev_Error GetDeviceImpls(OScDev_PtrArray **impls) {
*impls = OScDev_PtrArray_Create();
OScDev_PtrArray_Append(*impls, &DeviceImpl);
return OScDev_OK;
}
OScDev_MODULE_IMPL = {
.displayName = "OpenScan NI-DAQ",
.GetDeviceImpls = GetDeviceImpls,
.supportsRichErrors = true,
};