Program Listing for File ArduinoDAQ.cpp

↰ Return to documentation for file (AD7766_Arduino/ArduinoDAQ.cpp)

#include "ArduinoDAQ.h"
#include "Arduino.h"
#include <Vrekrer_scpi_parser.h>

int ArduinoDAQ::adcPin;
uint8_t ArduinoDAQ::adcData[MAX_NUMBER_MEASUREMENTS];
uint8_t ArduinoDAQ::operationRegister;
uint8_t ArduinoDAQ::questionableStatusRegister;
uint8_t ArduinoDAQ::errorEventQueue;
int ArduinoDAQ::numberADCMeasurements;

ArduinoDAQ::ArduinoDAQ(const int adcPin) {

  pinMode(ArduinoDAQ::adcPin, INPUT);
  ArduinoDAQ::numberADCMeasurements = 1;
  ArduinoDAQ::operationRegister = 0;
  ArduinoDAQ::questionableStatusRegister = 0;
  ArduinoDAQ::errorEventQueue = 0;

  this->myInstrument = SCPI_Parser();
  this->myInstrument.RegisterCommand(F("*IDN?"), &ArduinoDAQ::Identify);
  this->myInstrument.RegisterCommand(F("*RST"), &Reset);
  this->myInstrument.RegisterCommand(F("*CLS"), &Clear);

  this->myInstrument.SetCommandTreeBase("");
  this->myInstrument.RegisterCommand("MEASure?", &measureADCData);
  this->myInstrument.RegisterCommand("CONFigure", &configureADC);
  this->myInstrument.RegisterCommand("FETCh?", &fetchADCData);
}

void ArduinoDAQ::ProcessInput(Stream &interface, char* terminationCharacters) {
  this->myInstrument.ProcessInput(interface, terminationCharacters);
}

void ArduinoDAQ::Identify(SCPI_Commands commands, SCPI_Parameters parameters, Stream& interface) {
  interface.println(F("Vrekrer,Arduino SCPI Dimmer,#00,v0.4"));
}

void ArduinoDAQ::Reset(SCPI_Commands commands, SCPI_Parameters parameters, Stream& interface) {
  for(int i = 0; i < MAX_NUMBER_MEASUREMENTS; i++) {
    ArduinoDAQ::adcData[i] = 0;
  }
  ArduinoDAQ::numberADCMeasurements = 1;
  ArduinoDAQ::operationRegister = 0;
  ArduinoDAQ::questionableStatusRegister = 0;
  ArduinoDAQ::errorEventQueue = 0;
}

void ArduinoDAQ::Clear(SCPI_Commands commands, SCPI_Parameters parameters, Stream& interface) {
  operationRegister = 0;
  questionableStatusRegister = 0;
  errorEventQueue = 0;
}

/* Configures the number of ADC measurements we want to take */
void ArduinoDAQ::configureADC(SCPI_Commands commands, SCPI_Parameters parameters, Stream& interface) {
  ArduinoDAQ::numberADCMeasurements = constrain(String(parameters[0]).toInt(), 1, MAX_NUMBER_MEASUREMENTS);
}

/* Iniates ADC measurements and returns the data over the specified interface */
void ArduinoDAQ::measureADCData(SCPI_Commands commands, SCPI_Parameters parameters, Stream& interface) {
  interface.write('#');
  for(int i=0; i < numberADCMeasurements; i++) {
    adcData[i] = analogRead(adcPin);
    interface.write(adcData[i]);
  }
}

/* Fetches previously-measured ADC data stored in the internal buffer */
void ArduinoDAQ::fetchADCData(SCPI_Commands commands, SCPI_Parameters parameters, Stream& interface) {
  interface.write('#');
  for(int i=0; i < numberADCMeasurements; i++) {
    interface.write(adcData[i]);
  }
}