Please I need help for my project. I am using a sensor gauge to monitor fuel level and send messages at different fuel level to the specified phones numbers.
But I discovered that, only smaller phones get the messages while big android do not. In big android phones, only the phones number shows without the real message.
Again, it sends multiple messages. Please help.
#include <SoftwareSerial.h>
//Create software serial object to communicate with SIM800L
SoftwareSerial mySerial(3, 2); //SIM800L Tx & Rx is connected to Arduino #3 & #2
int gaugeVal;
int fullVal = 0;
int halfVal = 5;
int lowVal = 10;
int fuelGauge = A0;
void setup()
{
//Begin serial communication with Arduino and Arduino IDE (Serial Monitor)
Serial.begin(9600);
//Begin serial communication with Arduino and SIM800L
mySerial.begin(9600);
Serial.println("Initializing...");
delay(1000);
mySerial.println("AT"); //Once the handshake test is successful, it will back to OK
updateSerial();
mySerial.println("AT+CSQ"); //Signal quality test, value range is 0-31 , 31 is the best
updateSerial();
mySerial.println("AT+CCID"); //Read SIM information to confirm whether the SIM is plugged
updateSerial();
mySerial.println("AT+CREG?"); //Check whether it has registered in the network
updateSerial();
mySerial.println("AT+CMGF=1"); // Configuring TEXT mode
updateSerial();
mySerial.println("AT+CMGS="+2348098112427"");//change ZZ with country code and xxxxxxxxxxx with phone number to sms
updateSerial();
mySerial.print("Am ready sir"); //text content
updateSerial();
mySerial.write(26);
pinMode(fuelGauge, INPUT);
}
void loop()
{
gaugeVal = analogRead(fuelGauge);
Serial.println(gaugeVal);
delay(1000);
if (gaugeVal == fullVal)
{
Serial.print("Tank full");
mySerial.println("AT+CMGF=1"); // Configuring TEXT mode
updateSerial();
mySerial.println("AT+CMGS="+2348098112427"");
updateSerial();
mySerial.print("The tank diesel is 100% of its volume sir"); //text content
updateSerial();
mySerial.write(26);
}
if (gaugeVal == halfVal)
{
Serial.print("Tank is half");
mySerial.println("AT+CMGF=1"); // Configuring TEXT mode
updateSerial();
mySerial.println("AT+CMGS="+2348098112427"");
updateSerial();
mySerial.print("The tank diesel is 50% of its volume sir... please ready to Refill me"); //text content
updateSerial();
mySerial.write(26);
}
if (gaugeVal == lowVal)
{
Serial.print("Tank is Low");
mySerial.println("AT+CMGF=1"); // Configuring TEXT mode
updateSerial();
mySerial.println("AT+CMGS="+2348098112427"");
updateSerial();
mySerial.print("The tank diesel is 0% of its volume sir... please Refill me"); //text content
updateSerial();
mySerial.write(26);
}
}
void updateSerial()
{
delay(500);
while (Serial.available())
{
mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port
}
while(mySerial.available())
{
Serial.write(mySerial.read());//Forward what Software Serial received to Serial Port
}
}
