Mirrors/VILLASnode
1
0
Fork 0
mirror of https://git.rwth-aachen.de/acs/public/villas/node/ synced 2025-03-09 00:00:00 +01:00
Code Issues Releases Wiki Activity

nodetype:uldaq started integration for example

Browse source
This commit is contained in:
Manuel Pitz 2018-09-24 22:30:40 +02:00
parent 4703aaebc5
commit c1b4aad00d
1 changed files with 41 additions and 24 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

65
lib/nodes/uldaq.c
View file

@ -32,6 +32,31 @@ int uldaq_start(struct node *n)
{
int ret;
Range ranges[MAX_RANGE_COUNT];
DaqDeviceDescriptor devDescriptors[MAX_DEV_COUNT];
DaqDeviceInterface interfaceType = ANY_IFC;
DaqDeviceHandle daqDeviceHandle = 0;
int numRanges = 0;
int descriptorIndex = 0;
unsigned int numDevs = MAX_DEV_COUNT;
UlError err = ERR_NO_ERROR;
AiInputMode inputMode = AI_SINGLE_ENDED;
int samplesPerChannel = 10000;
int chanCount = 1;//change this to use more than one channel
ScanOption scanOptions = (ScanOption) (SO_DEFAULTIO | SO_CONTINUOUS);
AInScanFlag flags = AINSCAN_FF_DEFAULT;
int index = 0;
AiQueueElement queueArray[MAX_QUEUE_SIZE];
// allocate a buffer to receive the data
double *buffer = (double*) malloc(chanCount * samplesPerChannel * sizeof(double));
if(buffer == 0)
{
//printf("\nOut of memory, unable to create scan buffer\n");
ret = -1;
}
// Get descriptors for all of the available DAQ devices
err = ulGetDaqDeviceInventory(interfaceType, devDescriptors, &numDevs);
@ -54,12 +79,15 @@ int uldaq_start(struct node *n)
ret = -1;
}
// get the analog input ranges
err = getAiInfoRanges(daqDeviceHandle, inputMode, &numRanges, ranges);
err = ulConnectDaqDevice(daqDeviceHandle);
if (err != ERR_NO_ERROR)
ret = -1;
int chanCount = 0;//change this to use more than one channel
AiQueueElement queueArray[MAX_QUEUE_SIZE];
for (i=0; i<chanCount; i++)
{
queueArray[i].channel = i;
@ -72,7 +100,6 @@ int uldaq_start(struct node *n)
ret = -1;
AiInputMode inputMode;//will be ignored when in queue mode
Range range;//will be ignored when in queue mode
int lowChan,highChan;//will be ignored when in queue mode
// start the acquisition
@ -90,19 +117,6 @@ int uldaq_start(struct node *n)
// get the initial status of the acquisition
ulAInScanStatus(daqDeviceHandle, &status, &transferStatus);
while(status == SS_RUNNING && err == ERR_NO_ERROR && !enter_press())
{
// get the current status of the acquisition
err = ulAInScanStatus(daqDeviceHandle, &status, &transferStatus);
if(err == ERR_NO_ERROR)
{
}
}
}
@ -137,16 +151,19 @@ int uldaq_read(struct node *n, struct sample *smps[], unsigned cnt, unsigned *re
{
int avail;
struct loopback *l = (struct loopback *) n->_vd;
struct sample *cpys[cnt];
if(status == SS_RUNNING && err == ERR_NO_ERROR)
{
// get the current status of the acquisition
err = ulAInScanStatus(daqDeviceHandle, &status, &transferStatus);
avail = queue_signalled_pull_many(&l->queue, (void **) cpys, cnt);
for (int i = 0; i < avail; i++) {
sample_copy(smps[i], cpys[i]);
sample_decref(cpys[i]);
}
if(err == ERR_NO_ERROR)
{
index = transferStatus.currentIndex;
int i=0;//we only read one channel
double currentVal = buffer[index + i];
}
}
return avail;
}