Analog Output (DAC Digital to Analog Conversion) Functions

1. GetDAC
2. GetDACPercent
3. GetDACRangeFromIndex
4. GetIndexFromDACRange
5. SetDACFloat
6. SetDACOutputRange
7. SetDACPercent
8. SetDACReg
9. SetDACTrackGrossNet
10. SetDACTrackScale
11. StopDACTrackScale

Example - Application manually setting DAC output voltage

const int nDAC = 1;  // First DAC card

// Application should call this when starting up to initialize the DAC output
void SetupDAC(void)
{
    // Setup DAC to not track gross or net weight but be controlled manually
   if(SetDACTrackScale(nDAC, 0, dacTrackGross, WAIT_ACK) != OK)
       printf("\n\nSetDACTrackScale error\r\n");

   DACOutputRange outputrange = dacOutput0to10V;
   if(SetDACReg(nDAC, dacAD5422Control, 0x3FF0 | (uint16)outputrange, WAIT_ACK) != OK)
       printf("\n\nSetDACOutputRange error\r\n");

   float fMaxOutput = 10.0; // Maximum output 10 volts
   if(SetDACFloat(nDAC, dacMaxOutput, fMaxOutput, WAIT_ACK) != OK)
       printf("\n\nSetDACFloat max output error\r\n");
}

// Application may call this any time change in voltage output is desired
void SetDACVoltage(float voltage)
{
   // The DAC output is controlled by a 16 bit register so we multiply the maximum 16-bit value 0xFFFF times output percentage/100 desired. 
   // For example maximum 10 V would be 0xFFFF * (10.0 / 10.0) = 0xFFFF * 1.0 = 0xFFFF, 5V would be 0xFFFF * (5.0 / 10.0) = 0xFFFF * 0.5 = 0x8000
     uint16 value = (uint16)(0xFFFF * (voltage / 10.0));
     SetDACReg(nDAC, dacAD5422Data, value, WAIT_ACK);
}