int set_dac_volts(int chan, double voltage) {
lsampl_t data;
int retval;
DAC_ERROR = FALSE;
data = comedi_from_phys(voltage, da_range, maxdata_ao);
retval = comedi_data_write(it, subdev_ao, chan, range_ao, aref_ao, data);
if (retval < 0) {
comedi_perror("comedi_data_write in set_dac_volts");
DAC_ERROR = TRUE;
}
return retval;
}
/**
* @brief Directly set the DAC voltage
*
* @param Volts
*/
void MainWindow::setCommandVoltage(double Volts)
{
if (Ini_CmdO==NULL) return;
lsampl_t CurrentOutputValue=comedi_from_phys(Volts, Ini_CmdO->range,Ini_CmdO->maxdata);
int ret=comedi_data_write(it, Ini_CmdO->subdevice, Ini_CmdO->Channel, Ini_CmdO->rangeN, 0, CurrentOutputValue);
if (ret < 0)
{
//Message=(QString("comedi_data_write failed with cmd %1 (%2 V)\n").arg(CurrentOutputValue).arg(Volts));
}
else
{
//Message=(QString("Debug: command set cmd %1 (%2 V)\n").arg(CurrentOutputValue).arg(Volts));
};
}
void ComediAnalogOutputHardCal::write(double data)
{
lsampl_t sample = comedi_from_phys(data*m_outputConversionFactor, m_dataRange, m_maxData);
comedi_data_write(m_device, m_subdevice, m_channels[0], m_range, m_aref, sample);
}
/* -------------------------------------------------------------------- */
static long dsetWrite_devAoSyncComedi(aoRecord *pao) {
CONTEXT *p_myContext;
COMEDIDEV_AO *p_myAnalogOutput;
double myMinimumVoltage;
double myMaximumVoltage;
char p_myWarmstartFilename[BUFLEN];
FILE *p_myFileHandle;
dsetLog(3,__FILE__ "[%d] -> %s(%s)\n", __LINE__, __func__,pao->name);
pao->pact=TRUE;
p_myContext=(CONTEXT *)pao->dpvt;
p_myAnalogOutput=p_myContext->p_analogOutput;
myMaximumVoltage=p_myContext->maximumVoltage;
myMinimumVoltage=p_myContext->minimumVoltage;
if (pao->val>pao->drvh) pao->val=pao->drvh;
if (pao->val<pao->drvl) pao->val=pao->drvl;
umask(0000);
sprintf(p_myWarmstartFilename, WARMSTART_FILE_PREFIX "/%s", pao->name);
p_myFileHandle=fopen(p_myWarmstartFilename,"w");
if (p_myFileHandle==NULL) {
dsetLog(1, __FILE__ "[%d] Error: %s\n", __LINE__, pao->name);
dsetLog(1, __FILE__ "[%d] Error: Couldn't open file >%s<\n",
__LINE__, p_myWarmstartFilename);
sleep(SLEEPTIME_ERROR);
return(ERROR);
}
fprintf(p_myFileHandle,"%lg",pao->val);
fclose(p_myFileHandle);
if (pao->drvh!=myMaximumVoltage || pao->drvl!=myMinimumVoltage) {
p_myAnalogOutput->range=getOptimalOperatingRange(pao);
p_myAnalogOutput->c_range=comedi_get_range(p_myAnalogOutput->device,
p_myAnalogOutput->subdevice,
p_myAnalogOutput->channel,
p_myAnalogOutput->range);
}
p_myAnalogOutput->data=comedi_from_phys(
pao->val,
p_myAnalogOutput->c_range,
p_myAnalogOutput->maxdata);
dsetLog(7, __FILE__ "[%d] Synchronous write of a single value\n", __LINE__);
if( comedi_data_write(
p_myAnalogOutput->device,
p_myAnalogOutput->subdevice,
p_myAnalogOutput->channel,
p_myAnalogOutput->range,
p_myAnalogOutput->aref,
p_myAnalogOutput->data) <= ERROR ) {
comedi_perror(p_myAnalogOutput->p_deviceFilename);
sleep(SLEEPTIME_ERROR);
return(ERROR);
}
dsetLog(2,__FILE__ "[%d] %s -> %lg\n", __LINE__, pao->name, pao->val);
pao->pact=FALSE;
dsetLog(3, __FILE__ "[%d] <- %s\n", __LINE__, __func__ );
/* CONVERT according to calibration settings */
return(CONVERT);
}
