Problem using ADC library

[hugh]

Hi,

I have a Teensy 3.2 program that is used for driving a battery powered stepper motor. As part of the code, it uses the ADC library to send the battery voltage to a serial monitor. The hardware is actually running and working fine, including measuring and reporting the battery voltage. However, when I tried to modify my code today I can no longer verify the code in Arduino. I am inputting same code that is working but now I get errors that the ADC parameters are not declared in this scope.

My full code is too long to post (2600 lines) but I have included below all the sections that relate to the ADC library.

The first error is
sketch_oct01a:703: error: 'ADC_REF_1.2' was not declared in this scope
(*adc).setReference(ADC_REF_1V2, ADC_0);

then
sketch_oct01a:703: error: 'ADC_LOW_SPEED' was not declared in this scope
adc->setConversionSpeed(ADC_LOW_SPEED);

and so on. As far as I can see the library is properly loaded in C:\Program Files x86)\Arduino\hardware\teensy3

I am completely baffled as to what is causing this. For information, I am trying to use Arduino 1.8.5. I can't find the version number for the Teensy software but it was the latest version on 27th May this year. I have tried to verify and compile other Teensy programs and they all work fine.

Apologies in advance if I am (very likely) doing something daft but I am tearing my hair out over this.

Regards, Hugh

//  Libraries we need to include
#include <AccelStepper.h>
#include <ADC.h>
#include "streaming.h" 
#include <EEPROMex.h>
//#include <digitalWriteFast.h>
#include <Bounce2.h>  //https://github.com/thomasfredericks/Bounce2/wiki
#include <MegunoLink.h>

//BATTERY STATUS
float Vbattery = 0.0;

//CREATE OBJECTS
ADC *adc = new ADC(); // adc object;

void setup()
{
pinMode(pnBatteryVoltage, INPUT); //Pin 14 single ended input

//**************************SETUP SECTION THREE: SETUP ADC************************************
///// ADC0 ////
// reference can be ADC_REF_3V3, ADC_REF_1V2 (not for Teensy LC) or ADC_REF_EXT.
adc->setReference(ADC_REF_1V2, ADC_0); // change all 3.3 to 1.2 if you change the reference to 1V2
adc->setAveraging(16); // set number of averages
adc->setResolution(12); // set bits of resolution

// it can be ADC_VERY_LOW_SPEED, ADC_LOW_SPEED, ADC_MED_SPEED, ADC_HIGH_SPEED_16BITS, 
//ADC_HIGH_SPEED or ADC_VERY_HIGH_SPEED. See the documentation for more information
adc->setConversionSpeed(ADC_LOW_SPEED); // change the conversion speed
// it can be ADC_VERY_LOW_SPEED, ADC_LOW_SPEED, ADC_MED_SPEED, ADC_HIGH_SPEED or
//ADC_VERY_HIGH_SPEED
adc->setSamplingSpeed(ADC_HIGH_SPEED); // change the sampling speed

}

void CheckBattery()
{
  int value;
  unsigned long int now;
 
  now=millis();
  //  deal with rollovers
  if(now < lastBatteryCheck) lastBatteryCheck=now;
  //  only checking once every 15 seconds
  if((now - lastBatteryCheck) < batCheckDelay) return;
  lastBatteryCheck=now;
  
  
  //Use a software switch to control whether the comms timeout is active
  if (DO_COMMS_TIMEOUT) commTimeOut.begin(CommTimeOut, COMM_TO_VALUE); //Start the interval timer
  
  value = adc->analogRead(pnBatteryVoltage); // read a new value, will return ADC_ERROR_VALUE if the comparison is false.
  Vbattery = value*30.0/adc->getMaxValue(ADC_0);
  if (Vbattery < minBatteryVolts) bitSet(shutterSafety, SAF_LOWVOLT); //Set bit 4 in shutterSafety  
  SendBattery();

      
 
    /* fail_flag contains all possible errors,
        They are defined in  ADC_Module.h as
        ADC_ERROR_OTHER
        ADC_ERROR_CALIB
        ADC_ERROR_WRONG_PIN
        ADC_ERROR_ANALOG_READ
        ADC_ERROR_COMPARISON
        ADC_ERROR_ANALOG_DIFF_READ
        ADC_ERROR_CONT
        ADC_ERROR_CONT_DIFF
        ADC_ERROR_WRONG_ADC
        ADC_ERROR_SYNCH
        You can compare the value of the flag with those masks to know what's the error.
    */

    if(adc->adc0->fail_flag) 
  {
        Console.print("ADC0 error flags: 0x");
        Console.println(adc->adc0->fail_flag, HEX);
        if(adc->adc0->fail_flag == ADC_ERROR_COMPARISON) 
    {
            adc->adc0->fail_flag &= ~ADC_ERROR_COMPARISON; // clear that error
            Console.println("Comparison error in ADC0");
        }
  }
}

 

[manitou]

i think the ADC lib has been upgraded, constant is now ADC_REFERENCE::REF_1V2, see ADC.h
https://github.com/pedvide/ADC

 

[hugh]

i think the ADC lib has been upgraded, constant is now ADC_REFERENCE::REF_1V2, see ADC.h
https://github.com/pedvide/ADC

Thanks for that. I will modify my code to use the latest version.

Regards, Hugh