long eDAC(HANDLE Handle, ue9CalibrationInfo *CalibrationInfo, long Channel, double Voltage, long Binary, long Reserved1, long Reserved2)
{
uint8 IOType, channel;
uint16 bytesVoltage;
if( isCalibrationInfoValid(CalibrationInfo) == 0 )
{
printf("eDAC error: calibration information is required");
return -1;
}
if( getDacBinVoltCalibrated(CalibrationInfo, (uint8)Channel, Voltage, &bytesVoltage) < 0 )
return -1;
return ehSingleIO(Handle, 5, (uint8)Channel, (uint8)( bytesVoltage & (0x00FF) ), (uint8)(( bytesVoltage /256 ) + 192), 0, &IOType, &channel, NULL, NULL, NULL);
}
//Sends 1000 Feedback low-level commands to read digital IO and analog inputs.
//On the first send, the following are set: DAC0 to 2.5 volts, DAC1 to 3.5
//volts, and digital IOs to inputs.
int allIO(HANDLE hDevice, ue9CalibrationInfo *caliInfo)
{
uint8 sendBuff[34], recBuff[64], settlingTime;
uint8 numChannels; //Number of AIN channels, 0-16.
uint16 checksumTotal, bytesVoltage, ainMask;
int sendChars, recChars, i, j;
int initialize; //boolean to init. DAC and digital IO settings
int numIterations, valueDIPort;
long time, ainResolution;
double valueAIN[16];
numIterations = 1000;
initialize = 1;
time = 0;
numChannels = 8;
ainResolution = 12;
for( i = 0; i < 16; i++ )
valueAIN[i] = 9999.0;
settlingTime = 0;
ainMask = pow(2.0, numChannels) - 1;
sendBuff[1] = (uint8)(0xF8); //Command byte
sendBuff[2] = (uint8)(0x0E); //Number of data words
sendBuff[3] = (uint8)(0x00); //Extended command number
sendBuff[6] = 255; //FIOMask : setting the mask of all FIOs
sendBuff[7] = 0; //FIODir : setting all FIO directions to input
sendBuff[8] = 0; //FIOState : all FIO directions are input, so
// state writes do not apply
sendBuff[9] = 255; //EIOMask : setting the mask of all EIOs
sendBuff[10] = 0; //EIODir : setting all EIO directions to input
sendBuff[11] = 0; //EIOState : all EIO directions are input, so
// state writes do not apply
sendBuff[12] = 15; //CIOMask : setting the mask of all CIOs
sendBuff[13] = 0; //CIODirState : setting all CIO directions to input,
// state writes do not apply
sendBuff[14] = 7; //MIOMask : setting the mask of all MIOs
sendBuff[15] = 0; //MIODirState : setting all MIO directions to input,
// state writes do not apply
//Getting binary DAC0 value of 2.5 volts
if( getDacBinVoltCalibrated(caliInfo, 0, 2.500, &bytesVoltage) < 0 )
return -1;
//Setting the voltage of DAC0 to 2.5
sendBuff[16] = (uint8)(bytesVoltage & 255); //low bits of DAC0
sendBuff[17] = (uint8)(bytesVoltage/256) + 192; //high bits of DAC0
//(bit 7 : Enable,
// bit 6: Update)
//Getting binary DAC1 value of 3.5 volts
if( getDacBinVoltCalibrated(caliInfo, 1, 3.500, &bytesVoltage) < 0 )
return -1;
//Setting the voltage of DAC1 to 3.5 volts
sendBuff[18] = (uint8)(bytesVoltage & 255); //low bits of DAC1
sendBuff[19] = (uint8)(bytesVoltage/256) + 192; //high bits of DAC1
//(bit 7 : Enable,
// bit 6: Update)
//AINMask - reading the number of AINs specified by numChannels
sendBuff[20] = ainMask & 255; //AINMask (low byte)
sendBuff[21] = ainMask/256; //AINMask (high byte)
sendBuff[22] = 14; //AIN14ChannelNumber : setting to channel 14
sendBuff[23] = 15; //AIN15ChannelNumber : setting to channel 15
sendBuff[24] = ainResolution; //Resolution : Resolution specified by
// ainResolution
sendBuff[25] = settlingTime; //SettlingTime
//Setting all BipGains (Gain = 1, Bipolar = 1)
for( i = 26; i < 34; i++ )
sendBuff[i] = (uint8)(0x00);
extendedChecksum(sendBuff, 34);
time = getTickCount();
for( i = 0; i < numIterations; i++ )
{
//Sending command to UE9
sendChars = LJUSB_Write(hDevice, sendBuff, 34);
if( sendChars < 34 )
{
if( sendChars == 0 )
printf("Feedback error (Iteration %d) : write failed\n", i);
else
printf("Feedback error (Iteration %d) : did not write all of the buffer\n", i);
return -1;
}
//Reading response from UE9
recChars = LJUSB_Read(hDevice, recBuff, 64);
if( recChars < 64 )
{
if( recChars == 0 )
printf("Feedback error (Iteration %d) : read failed\n", i);
else
printf("Feedback error (Iteration %d) : did not read all of the buffer\n", i);
return -1;
}
checksumTotal = extendedChecksum16(recBuff, 64);
if( (uint8)((checksumTotal / 256) & 0xff) != recBuff[5] )
{
printf("Feedback error (Iteration %d) : read buffer has bad checksum16(MSB)\n", i);
return -1;
}
if( (uint8)(checksumTotal & 255) != recBuff[4] )
{
printf("Feedback error (Iteration %d) : read buffer has bad checksum16(LSB)\n", i);
return -1;
}
if( extendedChecksum8(recBuff) != recBuff[0] )
{
printf("Feedback error (Iteration %d) : read buffer has bad checksum8\n", i);
return -1;
}
if( recBuff[1] != (uint8)(0xF8) || recBuff[2] != (uint8)(0x1D) || recBuff[3] != (uint8)(0x00) )
{
printf("Feedback error (Iteration %d) : read buffer has wrong command bytes\n", i);
return -1;
}
for( j = 0; j < numChannels && j < 16; j++ )
getAinVoltCalibrated(caliInfo, 0x00, (uint8)ainResolution, recBuff[12 + j*2] + recBuff[13 + j*2]*256, &valueAIN[j]);
valueDIPort = recBuff[7] + recBuff[9]*256 + (recBuff[10] & 15)*65536 + (recBuff[11] & 7)*1048576;
if( initialize == 1 )
{
//Unsetting digital IO bit masks since we only want to read states now
sendBuff[6] = 0; //FIOMask
sendBuff[9] = 0; //EIOMask
sendBuff[12] = 0; //CIOMask
sendBuff[14] = 0; //MIOMask
//Turning off Update bit of DACs
sendBuff[17] = sendBuff[17] - 64; //high bits of DAC0
sendBuff[19] = sendBuff[19] - 64; //high bits of DAC1
extendedChecksum(sendBuff, 34);
initialize = 0;
}
}
time = getTickCount() - time;
printf("Milleseconds per iteration = %.3f\n", (double)time / (double)numIterations);
printf("\nDigital Input (FIO0-7, EIO0-7, CIO0-3, MIO0-2) = %d\n",valueDIPort);
printf("\nAIN readings from last iteration:\n");
for( j = 0; j < numChannels; j++ )
printf("%.3f\n", valueAIN[j]);
return 0;
}
long getDacBinVoltUncalibrated(int dacNumber, double analogVolt, uint8 *bytesVolt)
{
U3_CALIBRATION_INFO_DEFAULT.hardwareVersion = 1.20;
U3_CALIBRATION_INFO_DEFAULT.highVoltage = 0;
return getDacBinVoltCalibrated(&U3_CALIBRATION_INFO_DEFAULT, dacNumber, analogVolt, bytesVolt);
}
long getDacBinVoltUncalibrated(int dacNumber, double analogVolt, uint16 *bytesVolt)
{
return getDacBinVoltCalibrated(&UE9_CALIBRATION_INFO_DEFAULT, dacNumber, analogVolt, bytesVolt);
}
//Sends a Feedback low-level command to set DAC0, DAC1, read FIO0-FIO3 and
//AI0-AI3.
int feedback_example(HANDLE hDevice, ue9CalibrationInfo *caliInfo)
{
uint8 sendBuff[34], recBuff[64], ainResolution, gainBip;
uint16 checksumTotal, bytesVoltage;
uint32 tempDir, tempState;
int sendChars, recChars, i;
double voltage;
ainResolution = 12;
//ainResolution = 18; //high-res mode for UE9 Pro only
gainBip = 0; //(Gain = 1, Bipolar = 0)
sendBuff[1] = (uint8)(0xF8); //Command byte
sendBuff[2] = (uint8)(0x0E); //Number of data words
sendBuff[3] = (uint8)(0x00); //Extended command number
//All these bytes are set to zero since we are not changing the FIO, EIO, CIO
//and MIO directions and states
for( i = 6; i <= 15; i++ )
sendBuff[i] = (uint8)(0x00);
if( getDacBinVoltCalibrated(caliInfo, 0, 2.500, &bytesVoltage) < 0 )
return -1;
//setting the voltage of DAC0
sendBuff[16] = (uint8)( bytesVoltage & (0x00FF) ); //low bits of DAC0
sendBuff[17] = (uint8)( bytesVoltage / 256 ) + 192; //high bits of DAC0
//(bit 7 : Enable,
// bit 6: Update)
if( getDacBinVoltCalibrated(caliInfo, 1, 3.500, &bytesVoltage) < 0 )
return -1;
//setting the voltage of DAC1
sendBuff[18] = (uint8)( bytesVoltage & (0x00FF) ); //low bits of DAC1
sendBuff[19] = (uint8)( bytesVoltage / 256 ) + 192; //high bits of DAC1
//(bit 7 : Enable,
// bit 6: Update)
sendBuff[20] = (uint8)(0x0f); //AINMask - reading AIN0-AIN3, not AIN4-AIN7
sendBuff[21] = (uint8)(0x00); //AINMask - not reading AIN8-AIN15
sendBuff[22] = (uint8)(0x00); //AIN14ChannelNumber - not using
sendBuff[23] = (uint8)(0x00); //AIN15ChannelNumber - not using
sendBuff[24] = ainResolution; //Resolution = 12
//Setting BipGains
for( i = 25; i < 34; i++ )
sendBuff[i] = gainBip;
extendedChecksum(sendBuff, 34);
//Sending command to UE9
sendChars = LJUSB_Write(hDevice, sendBuff, 34);
if( sendChars < 34 )
{
if( sendChars == 0 )
printf("Error : write failed\n");
else
printf("Error : did not write all of the buffer\n");
return -1;
}
//Reading response from UE9
recChars = LJUSB_Read(hDevice, recBuff, 64);
if( recChars < 64 )
{
if( recChars == 0 )
printf("Error : read failed\n");
else
printf("Error : did not read all of the buffer\n");
return -1;
}
checksumTotal = extendedChecksum16(recBuff, 64);
if( (uint8)((checksumTotal / 256) & 0xff) != recBuff[5] )
{
printf("Error : read buffer has bad checksum16(MSB)\n");
return -1;
}
if( (uint8)(checksumTotal & 0xff) != recBuff[4])
{
printf("Error : read buffer has bad checksum16(LSB)\n");
return -1;
}
if( extendedChecksum8(recBuff) != recBuff[0] )
{
printf("Error : read buffer has bad checksum8\n");
return -1;
}
if( recBuff[1] != (uint8)(0xF8) || recBuff[2] != (uint8)(0x1D) || recBuff[3] != (uint8)(0x00) )
{
printf("Error : read buffer has wrong command bytes \n");
return -1;
}
printf("Set DAC0 to 2.500 volts and DAC1 to 3.500 volts.\n\n");
printf("Flexible digital I/O directions and states (FIO0 - FIO3):\n");
for( i = 0; i < 4; i++ )
{
tempDir = ( (uint32)(recBuff[6] / pow(2, i)) & (0x01) );
tempState = ( (uint32)(recBuff[7] / pow(2, i)) & (0x01) );
printf(" FI%d: %u and %u\n", i, tempDir, tempState);
}
printf("\nAnalog Inputs (AI0 - AI3):\n");
for( i = 0; i < 4; i++ )
{
bytesVoltage = recBuff[12 + 2*i] + recBuff[13 + 2*i]*256;
//getting analog voltage
if( getAinVoltCalibrated(caliInfo, gainBip, ainResolution, bytesVoltage, &voltage) < 0 )
return -1;
printf(" AI%d: %.4f V\n", i, voltage);
}
printf("\n");
return 0;
}
