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Sensor data doesn't gets uploaded to thingspeak channel but it show on the serial monitor

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Supratik Das
Supratik Das on 4 Apr 2021
Commented: Supratik Das on 7 Apr 2021
Your help will be appreciated.
Thanks in advance.
Here is my arduino code
#define USE_ARDUINO_INTERRUPTS true
#define DEBUG true
#define SSID "aabir" // "SSID-WiFiname"
#define PASS "digibaba" // "password"
#define IP "184.106.153.149" // thingspeak.com ip
#include <SoftwareSerial.h>
#include "Timer.h"
#include <PulseSensorPlayground.h> // Includes the PulseSensorPlayground Library.
Timer t;
PulseSensorPlayground pulseSensor;
String msg = "GET/update?key=CYDZTJS03ME1USS2";
//unsigned long myChannelNumber = 1329895;
SoftwareSerial esp8266(10,11);
//Variables
const int PulseWire = A0; // PulseSensor PURPLE WIRE connected to ANALOG PIN 0
const int LED13 = 13; // The on-board Arduino LED, close to PIN 13.
int Threshold = 550; //for heart rate sensor
float myTemp;
int myBPM;
String BPM;
String temp;
int error;
int panic;
int raw_myTemp;
float Voltage;
float tempC;
void setup()
{
Serial.begin(9600);
esp8266.begin(115200);
pulseSensor.analogInput(PulseWire);
pulseSensor.blinkOnPulse(LED13); //automatically blink Arduino's LED with heartbeat.
pulseSensor.setThreshold(Threshold);
// Double-check the "pulseSensor" object was created and "began" seeing a signal.
if (pulseSensor.begin()) {
Serial.println("We created a pulseSensor Object !"); //This prints one time at Arduino power-up, or on Arduino reset.
}
Serial.println("AT");
esp8266.println("AT");
delay(3000);
if(esp8266.find("OK"))
{
connectWiFi();
}
t.every(10000, getReadings);
t.every(10000, updateInfo);
}
void loop()
{
panic_button();
start: //label
error=0;
t.update();
//Resend if transmission is not completed
if (error==1)
{
goto start; //go to label "start"
}
delay(4000);
}
void updateInfo()
{
String cmd = "AT+CIPSTART=\"TCP\",\"";
cmd += IP;
cmd += "\",80";
Serial.println(cmd);
esp8266.println(cmd);
delay(2000);
if(esp8266.find("Error"))
{
return;
}
cmd = msg ;
cmd += "&field1="; //field 1 for BPM
cmd += BPM;
cmd += "&field2="; //field 2 for temperature
cmd += temp;
cmd += "\r\n";
Serial.print("AT+CIPSEND=");
esp8266.print("AT+CIPSEND=");
Serial.println(cmd.length());
esp8266.println(cmd.length());
if(esp8266.find(">"))
{
Serial.print(cmd);
esp8266.print(cmd);
}
else
{
Serial.println("AT+CIPCLOSE");
esp8266.println("AT+CIPCLOSE");
//Resend...
error=1;
}
}
boolean connectWiFi()
{
Serial.println("AT+CWMODE=1");
esp8266.println("AT+CWMODE=1");
delay(2000);
String cmd="AT+CWJAP=\"";
cmd+=SSID;
cmd+="\",\"";
cmd+=PASS;
cmd+="\"";
Serial.println(cmd);
esp8266.println(cmd);
delay(5000);
if(esp8266.find("OK"))
{
return true;
}
else
{
return false;
}
}
void getReadings(){
raw_myTemp = analogRead(A1);
Voltage = (raw_myTemp / 1023.0) * 5000; // 5000 to get millivots.
tempC = Voltage * 0.1;
myTemp = (tempC * 1.8) + 32; // conver to F
Serial.println(myTemp);
int myBPM = pulseSensor.getBeatsPerMinute(); // Calls function on our pulseSensor object that returns BPM as an "int".
// "myBPM" hold this BPM value now.
if (pulseSensor.sawStartOfBeat()) { // Constantly test to see if "a beat happened".
Serial.println(myBPM); // Print the value inside of myBPM.
}
delay(20);
char buffer1[10];
char buffer2[10];
BPM = dtostrf(myBPM, 4, 1, buffer1);
temp = dtostrf(myTemp, 4, 1, buffer2);
}
void panic_button(){
panic = digitalRead(8);
if(panic == HIGH){
Serial.println(panic);
String cmd = "AT+CIPSTART=\"TCP\",\"";
cmd += IP;
cmd += "\",80";
Serial.println(cmd);
esp8266.println(cmd);
delay(2000);
if(esp8266.find("Error"))
{
return;
}
cmd = msg ;
cmd += "&field3=";
cmd += panic;
cmd += "\r\n";
Serial.print("AT+CIPSEND=");
esp8266.print("AT+CIPSEND=");
Serial.println(cmd.length());
esp8266.println(cmd.length());
if(esp8266.find(">"))
{
Serial.print(cmd);
esp8266.print(cmd);
}
else
{
Serial.println("AT+CIPCLOSE");
esp8266.println("AT+CIPCLOSE");
//Resend...
error=1;
}
}
}

Answers (1)

Vinod
Vinod on 4 Apr 2021
If you have not purchased a ThingSpeak license, your maximum update rate is once every 15 seconds. I do not see where you are limiting your code to make updates every 15 seconds or less. This is likely why your device is unable to post updates to ThingSpeak.

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