whenever i input something and press end in the serial monitor it just disapear. i am trying to send a message via gsm module to my phone. At first i thought the power was not sufficient but i added an external power and lines have enough airtime. the connection is fine. I am using a simcom GSM sim900.
Thank you
my code is:
#include "SIM900.h"
#include <SoftwareSerial.h>
#include "sms.h"
SMSGSM sms;
#include <LiquidCrystal.h> //include the library code
const int numRows = 2;
const int numCols = 16;
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 10, 6, 5, 4);
byte statusLed = 13;
int solenoidPin = 9; //This is the output pin on the Arduino we are using
byte sensorInterrupt = 0;
byte sensorPin = 2;
// The hall-effect flow sensor outputs approximately 7.5 pulses per second per
// litre/minute of flow.
float calibrationFactor = 7.5;
volatile byte pulseCount;
float flowRate;
unsigned int flowMilliLitres;
unsigned long totalMilliLitres;
unsigned long oldTime;
int numdata;
boolean started=false;
char smsbuffer[160];
char n[20];
char sms_position;
char phone_number[20];
char sms_text[100];
int i;
void setup()
{
// Initialize a serial connection for reporting values to the host
Serial.begin(9600);
Serial.flush();
delay(2);
Serial.end();
Serial.begin(9600);
if (gsm.begin(4800))
{
Serial.println("\nstatus=READY");
started=true;
}
else
Serial.println("\nstatus=IDLE");
// Set up the status LED line as an output
pinMode(statusLed, OUTPUT);
digitalWrite(statusLed, HIGH); // We have an active-low LED attached
pinMode(sensorPin, INPUT);
digitalWrite(sensorPin, HIGH);
pinMode(solenoidPin, OUTPUT); //Sets the pin as an output
digitalWrite(solenoidPin, HIGH);
pulseCount = 0;
flowRate = 0.0;
flowMilliLitres = 0;
totalMilliLitres = 0;
oldTime = 0;
// The Hall-effect sensor is connected to pin 2 which uses interrupt 0.
// Configured to trigger on a FALLING state change (transition from HIGH
// state to LOW state)
attachInterrupt(sensorInterrupt, pulseCounter, FALLING);
}
/**
- Main program loop
*/
void loop()
{
if((millis() - oldTime) > 1000) // Only process counters once per second
{
// Disable the interrupt while calculating flow rate and sending the value to
// the host
detachInterrupt(sensorInterrupt);
// Because this loop may not complete in exactly 1 second intervals we calculate
// the number of milliseconds that have passed since the last execution and use
// that to scale the output. We also apply the calibrationFactor to scale the output
// based on the number of pulses per second per units of measure (litres/minute in
// this case) coming from the sensor.
flowRate = ((1000.0 / (millis() - oldTime)) * pulseCount) / calibrationFactor;
//Note that because we've disabled interrupts the millis() function won't
//actually be incrementing right at this point, but it will still return the value
//it was set to just before interrupts went away.
oldTime = millis();
flowMilliLitres = (flowRate / 60) * 1000;
// Add the millilitres passed in this second to the cumulative total
totalMilliLitres += flowMilliLitres;
unsigned long totalMilliLitres_temp = totalMilliLitres;
char msg[255];
int i = 0;
unsigned long reverse = 0;
while (totalMilliLitres_temp != 0)
{
reverse *= 10;
reverse += totalMilliLitres_temp%10;
totalMilliLitres_temp /= 10;
}
do
{
msg = '0' + reverse%10;
- reverse /= 10;*
- i++;*
}while(reverse != 0);
msg = 0;
* unsigned int frac;*
* // Print the flow rate for this second in litres / minute*
* Serial.print("Flow rate: ");*
* Serial.print(int(flowRate)); // Print the integer part of the variable*
* Serial.print("."); // Print the decimal point*
* // Determine the fractional part. The 10 multiplier gives us 1 decimal place.*
_ frac = (flowRate - int(flowRate)) * 10;_
* Serial.print(frac, DEC) ; // Print the fractional part of the variable*
* Serial.print("L/min");*
* // Print the number of litres flowed in this second*
* Serial.print(" Current Liquid Flowing: "); // Output separator*
* Serial.print(flowMilliLitres);*
* Serial.print("mL/Sec");*
* // Print the cumulative total of litres flowed since starting*
* Serial.print(" Output Liquid Quantity: "); // Output separator*
* Serial.print(msg);*
* Serial.println("mL");*
* // Reset the pulse counter so we can start incrementing again*
* pulseCount = 0;*
* // Enable the interrupt again now that we've finished sending output*
* lcd.begin(numCols, numRows);*
* lcd.print("Meter Number:");*
* lcd.setCursor(0, 1);*
* lcd.print("Total: ");*
* lcd.print(msg); // Print a message to the LCD.*
* lcd.print("mL");*
* if(started)*
* {*
* if (sms.SendSMS("+254702662228", msg))*
* {*
* Serial.println("\nSMS sent OK.");*
* }*
* else*
* {*
* Serial.println("\nError sending SMS.");*
* } *
* for(i=1;i<=20;i++)*
* {*
* sms.DeleteSMS(i);*
* } *
* }*
* if(started)*
* {*
* sms_position=sms.IsSMSPresent(SMS_UNREAD);
if (sms_position)
_ {_
_ Serial.print("SMS postion:");_
Serial.println(sms_position,DEC);
sms.GetSMS(sms_position, phone_number, sms_text, 100);
Serial.println(phone_number);
Serial.println(sms_text);*
* if((String)sms_text == "open")
_ {_
_ //whatever you want to do*_
* digitalWrite(solenoidPin, HIGH); //Switch Solenoid ON*
* Serial.println("valve open");*
* }*
* else if ((String)sms_text == "close")
_ {_
_ Serial.println("valve closed");_
_ digitalWrite(solenoidPin, LOW); //Switch Solenoid OFF*_
* }*
* else if((String) sms_text == "water")
_ {_
_ Serial.println("Here is data");_
_ }_
_ } *_
* }*
* pulseCount = 0;*
* attachInterrupt(sensorInterrupt, pulseCounter, FALLING);*
* }*
}
/*
Insterrupt Service Routine
*/
void pulseCounter()
{
* // Increment the pulse counter*
* pulseCount++;*
}