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#include <Adafruit_FONA.h>
#include <Adafruit_GPS.h>
#include <SoftwareSerial.h>
// Pin for actiaving LifeLarm
#define activateLarm 5
// Pins on PCB that connect to Sim
#define FONA_RX 9
#define FONA_TX 8
#define FONA_RST 4
#define FONA_RI 7
// this is a large buffer for replies
char replybuffer[255];
// Phone number we send emergency text to
char callerIDbuffer[32];
// Slot in which the phone number is stored
int slot = 0;
SoftwareSerial fonaSS = SoftwareSerial(FONA_TX, FONA_RX);
SoftwareSerial *fonaSerial = &fonaSS;
Adafruit_FONA fona = Adafruit_FONA(FONA_RST);
uint8_t readline(char *buff, uint8_t maxbuff, uint16_t timeout = 0);
void setup()
{
while (!Serial) ;
Serial.begin(115200);
Serial.println(F("LifeLarm turning on!"));
Serial.println(F("Initializing....(May take 3 seconds)"));
// make it slow so its easy to read!
fonaSerial->begin(4800);
if (!fona.begin(*fonaSerial)) {
Serial.println(F("Couldn't find FONA"));
while (1) ;
}
// Set button to active low
pinMode(activateLarm, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(activateLarm), sendHelp, CHANGE);
Serial.println("LifeLarm Ready");
// Loop trough slots untill we find the number
for (int k = 0; k < 10; k++) {
if (!fona.getSMSSender(slot, callerIDbuffer, 31)) {
Serial.print(F("Found number in slot:"));
Serial.println(slot);
Serial.print(F("Emergency number set to: "));
Serial.println(callerIDbuffer);
k = 99; // exit for loop by going out of bounds
} else {
Serial.print(F
("Could not find emergency number in slot:"));
Serial.println(slot);
}
}
}
char fonaInBuffer[64]; //for notifications from the FONA
void loop()
{
char *bufPtr = fonaInBuffer; //handy buffer pointer
if (fona.available()) //any data available from the FONA?
{
int charCount = 0;
int newSlot = 0;
//Read the notification into fonaInBuffer
do {
*bufPtr = fona.read();
Serial.write(*bufPtr);
delay(1);
} while ((*bufPtr++ != '\n') && (fona.available())
&& (++charCount < (sizeof(fonaInBuffer) - 1)));
//Add a terminal NULL to the notification string
*bufPtr = 0;
// Scan the notification string for an SMS received notification.
// If it's an SMS message, we'll get the slot number in 'slot'
if (1 == sscanf(fonaInBuffer, "+CMTI: \"SM\",%d", &newSlot)) {
Serial.print("New slot: ");
Serial.println(slot);
// Retrieve SMS sender address/phone number.
if (!fona.getSMSSender(newSlot, callerIDbuffer, 31)) {
Serial.println
("Didn't find SMS message in slot!");
}
Serial.print(F("Retreived number: "));
Serial.println(callerIDbuffer);
Serial.print(F("Stored in slot: "));
Serial.println(newSlot);
//Send back an automatic response
Serial.println("Sending confirmation...");
if (!fona.sendSMS(callerIDbuffer,
"Your phone number has been set as the emergency number!"))
{
Serial.println(F("Failed to send!"));
} else {
Serial.println(F("Sent!"));
}
// delete the previous slot
// otherwise, we will fill up all the slots
// and then we won't be able to receive SMS anymore
if (fona.deleteSMS(slot)) {
Serial.println(F("OK!"));
} else {
Serial.println(F("Couldn't delete"));
}
// set current slot to new message
slot = newSlot;
}
}
}
void sendHelp()
{
Serial.println("Sending text...");
if (!fona.sendSMS(callerIDbuffer,
"HELP! ... --- ... I will be sending my location to you!"))
{
Serial.println(F("Failed to send!"));
} else {
Serial.println(F("Sent!"));
}
}
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