Sensor Logger and expect to form a line chart

Other Hardware Sensors
1

Hi! Recently I am doing a Arduino project and I have finished some sensor part like water meter and I want to send data to Thingspeak so I choose esp8266ex as wifi module and I try some code however It doesn't work
#include<SoftwareSerial.h>
SoftwareSerial espSerial = SoftwareSerial(2,3);
String apiKey = "FLD165PBJ09Y7Q55";

String ssid="iPhone"; // Wifi network SSID
String password ="12345678";

boolean DEBUG=true;

byte statusLed = 13;
byte sensorInterrupt = 0;
int sensor_pin=A0; // variable for sensor
float sample=0;
float calibrationFactor = 4.5;
volatile byte pulseCount;
float flowRate;
unsigned int flowMilliLitres;
unsigned long totalMilliLitres;
unsigned long oldTime

void showResponse(int waitTime){
long t=millis();
char c;
while (t+waitTime>millis()){
if (espSerial.available()){
c=espSerial.read();
if (DEBUG) Serial.print(c);
}
}

}
//========================================================================
boolean thingSpeakWrite(float value1){
String cmd = "AT+CIPSTART="TCP",""; // TCP connection
cmd += "184.106.153.149"; // api.thingspeak.com
cmd += "",80";
espSerial.println(cmd);
if (DEBUG) Serial.println(cmd);
if(espSerial.find("Error")){
if (DEBUG) Serial.println("AT+CIPSTART error");
return false;
}

String getStr = "GET /update?api_key="; // prepare GET string
getStr += apiKey;

getStr +="&field1=";
getStr += String(value1);

// getStr +="&field3=";
// getStr += String(value3);
// ...
getStr += "\r\n\r\n";

// send data length
cmd = "AT+CIPSEND=";
cmd += String(getStr.length());
espSerial.println(cmd);
if (DEBUG) Serial.println(cmd);
delay(100);
if(espSerial.find(">")){
espSerial.print(getStr);
if (DEBUG) Serial.print(getStr);
}
else{
espSerial.println("AT+CIPCLOSE");
// alert user
if (DEBUG) Serial.println("AT+CIPCLOSE");
return false;
}
return true;
}

void setup(){
DEBUG=true;
Serial.begin(9600);
espSerial.begin(115200);
espSerial.println("AT+CWMODE=1"); // set esp8266 as client
showResponse(1000);

espSerial.println("AT+CWJAP=""+iPhone+"",""+12345678+"""); // set your home router SSID and password
showResponse(5000);
pinMode(statusLed, OUTPUT);
digitalWrite(statusLed, HIGH); // Optional Internal Pull-Up
// enable debug serial
// enable software serial

pulseCount = 0.0;
flowRate = 0.0;
flowMilliLitres = 0.0;
totalMilliLitres = 0.0;
oldTime = 0;
attachInterrupt(sensorInterrupt, pulseCount, FALLING);
if (DEBUG)
Serial.println("Setup completed");

}
void loop(){
if((millis() - oldTime) > 100){
flowRate = ((1000.0 / (millis() - oldTime)) * pulseCount) / calibrationFactor/100;
oldTime = millis();
float t = flowRate;
thingSpeakWrite(t);
// Write values to thingspeak
}
// blink LED on board
digitalWrite(statusLed, HIGH);
delay(200);
digitalWrite(statusLed, LOW);
pulseCount = 0;
attachInterrupt(sensorInterrupt, pulseCounter, FALLING);

}
void pulseCounter()
{
pulseCount++;
}
please check it thanks a million

2

"It doesn't work" isn't very helpful. What exactly does it do? What doesn't it do that you think it should. Please give details.

And please edit your post to put the code inside </> code tags as described in "How to use this forum - please read".

Steve

3

Software serial @115200 is probably the kiss of death. If you must use that speed for the ESP8266, put it on the proper hardware serial port, which you don't appear to be using.