char to SMS and memory question

Projects Programming
1

I use the following code in a project. I would like to add the temperature in de tekst from "char txtSMS_AlarmTemp" to send it in the SMS. How to do this?

I have also a question about the memory. I get a message of low memory on my UNO that is almost full. What to can i do to solve this problem.

//librarys
#include <GSM.h>
#include <OneWire.h>
#include <DallasTemperature.h>

////Telefoon
// PIN SIM
#define PINNUMBER ""
// initialize the library instances
GSM gsmAccess;
GSM_SMS sms;

////Temperature
#define ONE_WIRE_BUS 4
OneWire oneWire(ONE_WIRE_BUS);
// Pass our oneWire reference to Dallas Temperature. 
DallasTemperature sensors(&oneWire);
//Hardware adres DS18B20 PIN 4
DeviceAddress Thermometer = { 0x28, 0xBF, 0x64, 0xA3, 0x06, 0x00, 0x00, 0xC3 };


//Variable
float TEMPAlarm = 10.00;

//Telefoon nummers
char tel1[20]= "+3165********";  

//Global files
byte  ALARM_FLAG = 0;

//meldingenen
char txtSMS_Online[200]="<> Status Online";
char txtSMS_AlarmTemp[200]="ALARM de temperatuur is gezakt onder de ingestelde waarde";
char txtSMS_AlarmSensor[200]="ALARM temperatuur sensor niet gedetecteerd";
 

void setup(void)
{
  // start serial port
  Serial.begin(9600);
  Serial.println("<> Aan");
  
  // Start library
  sensors.begin();
  // set the resolution to 10 bit (good enough?)
  sensors.setResolution(Thermometer, 10);

  //SIMmodule
 // connection state
  boolean notConnected = true;

  // Start GSM shield
  while(notConnected)
  {
    if(gsmAccess.begin(PINNUMBER)==GSM_READY)
      notConnected = false;
    else
    {
      Serial.println("Not connected");
      delay(1000);
    }
  }
  //SMS Online
  Serial.println("GSM initialized");
  sendSMSOnline(); 
}
  



// Temperatuur sensor
void printTemperature(DeviceAddress deviceAddress)
{
  float tempC = sensors.getTempC(deviceAddress);
  if (tempC < -100.00) {
    Serial.print("Sensor is niet verbonden 1e controle");
    sendSMSAlarmSensor();
  }
  else if (tempC <= (float) TEMPAlarm) {
    Serial.print("C: ");
    Serial.print(tempC);
    ALARM_FLAG = 1;
  } 
    else {
    Serial.print("Het is niet kouder dan de ingestelde waarde, het is nu *C ");
    Serial.print(tempC);
  }
}


void loop(void)
{ 
  Serial.print("Meten...\n\r");
  sensors.requestTemperatures();
  
  Serial.print("Temperature ");
  printTemperature(Thermometer);
  Serial.print("\n\r");

  if ( ALARM_FLAG == 1 ) {
    Serial.println("Alarm Activated");
    sendSMSTempAlarm();  
  }
    else if ( ALARM_FLAG == 3 ) {
    Serial.println("Alarm Activated ");
    sendSMSTempAlarm();  
  }
  

  delay (59000);
}


void sendSMSOnline(){

  Serial.print("Message to mobile number: ");
  Serial.println(tel1);

  // sms text
  Serial.println("SENDING");
  Serial.println();
  Serial.println("Message:");
  Serial.println(txtSMS_Online);

  // send the message
  sms.beginSMS(tel1);
  sms.print(txtSMS_Online);
  sms.endSMS(); 
  Serial.println("\nCOMPLETE!\n");  
}

void sendSMSTempAlarm(){

  Serial.print("Message to mobile number: ");
  Serial.println(tel1);

  // sms text
  Serial.println("SENDING");
  Serial.println();
  Serial.println("Message:");
  Serial.println(txtSMS_AlarmTemp);
  Serial.println(txtSMS_AlarmTemp);

  // send the message
  sms.beginSMS(tel1);
  sms.print(txtSMS_AlarmTemp);
  sms.endSMS(); 
  Serial.println("\nCOMPLETE!\n");

  ALARM_FLAG = 2;
  
    delay (120000); // 2 min
}

void sendSMSAlarmSensor(){

  Serial.print("Message to mobile number: ");
  Serial.println(tel1);

  // sms text
  Serial.println("SENDING");
  Serial.println();
  Serial.println("Message:");
  Serial.println(txtSMS_AlarmSensor);

  // send the message
  sms.beginSMS(tel1);
  sms.print(txtSMS_AlarmSensor);
  sms.endSMS(); 
  Serial.println("\nCOMPLETE!\n");

  ALARM_FLAG = 3;
  
    delay (120000); // 2 min
}
2 
char txtSMS_Online[200]="<> Status Online";
char txtSMS_AlarmTemp[200]="ALARM de temperatuur is gezakt onder de ingestelde waarde";
char txtSMS_AlarmSensor[200]="ALARM temperatuur sensor niet gedetecteerd";

The compiler can count better than you can. Instead of reserving 600 characters, let the compiler reserve on the needed space.

I would like to add the temperature in de tekst from "char txtSMS_AlarmTemp"

Where in that text?

tempC is local to the printTemperature() function, which, obviously, needs a better name as the function does a lot more than print the temperature. So, you'd need to get the value into a string, using dtostrf(), and make that string part of the text in txtSMS_AlarmTemp using sprintf(). In that case, txtSMS_AlarmTemp does need to have a size defined, and the size needs to accommodate the text that is there and the text that dtostrf() will create.