Iam Getting error ^~~~~~~~ exit status 1 call of overloaded 'setField(int, uint16_t&)' is ambiguousn while compiling code to Arduino Uno wifi rev 2

iam trying to send dfrobot dissolved oxygen meter readings to things speak but i am getting error. i compiled the code individually and verifed the readings the code is fuctioning and is working good. Then i uploaded the same code to thingspeak using MKR1000 then also it worked good . But when i used wifi NINA / Arduino Uno wifi rev 2 iam getting an error for transferring the data to things speak. please someone help me clearing this error.

iam attching the error code ^~~~~~~~

exit status 1

call of overloaded 'setField(int, uint16_t&)' is ambiguous

CODE:

I HAVE UNDERLINED AND BOLDED THE LINE IN THE CODE WHERE IAM GETTING ERROR.

#include <WiFiNINA.h>

#include "secrets.h"

#include "ThingSpeak.h" // always include thingspeak header file after other header files and custom macro

#define SensorPin A0 // the pH meter Analog output is connected with the Arduino’s Analog

unsigned long int avgValue; //Store the average value of the sensor feedback

float b;

int buf[10],temp;

#include <Arduino.h>

#define DO_PIN A1

#define VREF 5000 //VREF (mv)

#define ADC_RES 1024 //ADC Resolution

//Single-point calibration Mode=0

//Two-point calibration Mode=1

#define TWO_POINT_CALIBRATION 0

#define READ_TEMP (25) //Current water temperature ℃, Or temperature sensor function

//Single point calibration needs to be filled CAL1_V and CAL1_T

#define CAL1_V (1904) //mv

#define CAL1_T (25) //℃

//Two-point calibration needs to be filled CAL2_V and CAL2_T

//CAL1 High temperature point, CAL2 Low temperature point

#define CAL2_V (1300) //mv

#define CAL2_T (15) //℃

const uint16_t DO_Table[41] = {

14460, 14220, 13820, 13440, 13090, 12740, 12420, 12110, 11810, 11530,

11260, 11010, 10770, 10530, 10300, 10080, 9860, 9660, 9460, 9270,

9080, 8900, 8730, 8570, 8410, 8250, 8110, 7960, 7820, 7690,

7560, 7430, 7300, 7180, 7070, 6950, 6840, 6730, 6630, 6530, 6410};

uint8_t Temperaturet;

uint16_t ADC_Raw;

uint16_t ADC_Voltage;

uint16_t DO;

int16_t readDO(uint32_t voltage_mv, uint8_t temperature_c)

{

#if TWO_POINT_CALIBRATION == 00

uint16_t V_saturation = (uint32_t)CAL1_V + (uint32_t)35 * temperature_c - (uint32_t)CAL1_T * 35;

return (voltage_mv * DO_Table[temperature_c] / V_saturation);

#else

uint16_t V_saturation = (int16_t)((int8_t)temperature_c - CAL2_T) * ((uint16_t)CAL1_V - CAL2_V) / ((uint8_t)CAL1_T - CAL2_T) + CAL2_V;

return (voltage_mv * DO_Table[temperature_c] / V_saturation);

#endif

}

char ssid[] = SECRET_SSID; // your network SSID (name)

char pass[] = SECRET_PASS; // your network password

int keyIndex = 0; // your network key Index number (needed only for WEP)

WiFiClient client;

unsigned long myChannelNumber = SECRET_CH_ID;

const char * myWriteAPIKey = SECRET_WRITE_APIKEY;

// Initialize our values

int number1 = 0;

int number2 = random(0,100);

int number3 = random(0,100);

int number4 = random(0,100);

String myStatus = "";

void setup() {

Serial.begin(115200); // Initialize serial

while (!Serial) {

; // wait for serial port to connect. Needed for Leonardo native USB port only

}

ThingSpeak.begin(client); // Initialize ThingSpeak

}

void loop() {

// Connect or reconnect to WiFi

if(WiFi.status() != WL_CONNECTED){

Serial.print("Attempting to connect to SSID: ");

Serial.println(SECRET_SSID);

while(WiFi.status() != WL_CONNECTED){

WiFi.begin(ssid, pass); // Connect to WPA/WPA2 network. Change this line if using open or WEP network

Serial.print(".");

delay(5000);

}

Serial.println("\nConnected.");

}

// Get a reading from the temperature sensor:

for(int i=0;i<10;i++) //Get 10 sample value from the sensor for smooth the value

{

buf[i]=analogRead(SensorPin);

delay(10);

}

for(int i=0;i<9;i++) //sort the analog from small to large

{

for(int j=i+1;j<10;j++)

{

if(buf[i]>buf[j])

{

temp=buf[i];

buf[i]=buf[j];

buf[j]=temp;

}

}

}

avgValue=0;

for(int i=2;i<8;i++) //take the average value of 6 center sample

avgValue+=buf[i];

float phValue=(float)avgValue*5.0/1024/6; //convert the analog into millivolt

phValue=3.5*phValue; //convert the millivolt into pH value

Serial.print(" pH:");

Serial.print(phValue,2);

Serial.println(" ");

delay(1000);

Temperaturet = (uint8_t)READ_TEMP;

ADC_Raw = analogRead(DO_PIN);

ADC_Voltage = uint32_t(VREF) * ADC_Raw / ADC_RES;

Serial.print("Temperaturet:\t" + String(Temperaturet) + "\t");

Serial.print("ADC RAW:\t" + String(ADC_Raw) + "\t");

Serial.print("ADC Voltage:\t" + String(ADC_Voltage) + "\t");

Serial.println("DO:\t" + String(readDO(ADC_Voltage, Temperaturet)) + "\t");

delay(1000);

// set the fields with the values

ThingSpeak.setField(1, Temperaturet);

ThingSpeak.setField(2, phValue);

ThingSpeak.setField(3, ADC_Voltage); // (HERE IAM GETTING THE ERROR)

ThingSpeak.setField(4, number4);

// figure out the status message

if(number1 > number2){

myStatus = String("field1 is greater than field2");

}

else if(number1 < number2){

myStatus = String("field1 is less than field2");

}

else{

myStatus = String("field1 equals field2");

}

// set the status

ThingSpeak.setStatus(myStatus);

// write to the ThingSpeak channel

int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);

if(x == 200){

Serial.println("Channel update successful.");

}

else{

Serial.println("Problem updating channel. HTTP error code " + String(x));

}

// change the values

number1++;

if(number1 > 99){

number1 = 0;

}

number2 = random(0,100);

number3 = random(0,100);

number4 = random(0,100);

delay(20000); // Wait 20 seconds to update the channel again

}

Answer 1

[Christopher Stapels]

Can you cast it to a string or float before setting the field? I know this will require more memory.

perhaps like this:

ThingSpeak.setField(3, float(ADC_Voltage));

[NAGUBATHULA SATYA SRIRAM]

Thanks for the answer. The code is now working and able to write to ThingSpeak channel.