-
Notifications
You must be signed in to change notification settings - Fork 2
/
SMS-Remote-Starter.ino
265 lines (216 loc) · 6.51 KB
/
SMS-Remote-Starter.ino
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
#include "LowPower.h"
#include <SoftwareSerial.h>
#include <OneWire.h>
#include <DallasTemperature.h>
// SIM900 Shield Serial Pins
SoftwareSerial SIM900(7, 8);
// Set to true if you want confirmation text messages
boolean respond = false;
// Key fob pins
int lockPin = 6;
int starterPin = 5;
int unlockPin = 4;
int auxPin = 3;
// Replace with the number of the controlling phone
String myPhoneNum = "+17055555555";
// DS18B20 Temperature Sensor Data Pin
int tempPin = 2;
OneWire oneWire(tempPin);
DallasTemperature sensors(&oneWire);
void setup()
{
pinMode(9, OUTPUT);
pinMode(13, OUTPUT);
pinMode(lockPin, OUTPUT);
pinMode(starterPin, OUTPUT);
pinMode(unlockPin, OUTPUT);
pinMode(auxPin, OUTPUT);
Serial.begin(9600); // for serial monitor
Serial.println("Starting.");
SIM900.begin(9600); // Serial for GSM shield
SIM900poweron(); // turn on shield
//Wake up modem with an AT command
sendCommand("AT", "OK", 1000);
if(sendCommand("AT", "OK", 1000) == 1){
Serial.println("Module started");
}
if(sendCommand("AT+CNMI=0,0,0,0,0", "OK", 1000) == 1){
Serial.println("Notifications disabled");
}
if(sendCommand("AT+CMGF=1", "OK", 1000) == 1){
Serial.println("Text mode enabled");
}
if(sendCommand("AT+CSCLK=2", "OK", 1000) == 1){
Serial.println("Sleeping enabled");
}
sensors.begin();
}
void loop()
{
//Wake up modem with two AT commands
sendCommand("AT", "OK", 1000);
sendCommand("AT", "OK", 2000);
// Check if it's currently registered to Speakout
if(sendCommand("AT+CREG?","+CREG: 0,1",1000)){
Serial.println("Connected to the home cell network");
// Try to get the first SMS. Reply prefixed with +CMGR: if there's a new SMS
if(sendCommand("AT+CMGR=1", "+CMGR: ", 1000) == 1){
String serialContent = "";
char serialCharacter;
while(SIM900.available()) {
serialCharacter = SIM900.read();
serialContent.concat(serialCharacter);
delay(10);
}
// Dividing up the new SMS
String smsNumber = serialContent.substring(14,26);
String smsMessage = serialContent.substring(53,serialContent.length()-8);
smsMessage.trim();
smsMessage.toLowerCase();
Serial.println("New SMS Message");
Serial.println(smsNumber);
Serial.println(smsMessage);
// Delete all SMS messages in memory
sendCommand("AT+CMGD=1,4", "OK", 1000);
// Check if it's coming from my phone
if(smsNumber == myPhoneNum){
if(smsMessage == "start"){
carStart();
if(respond){ sendSms("Car Started"); }
}
else if(smsMessage == "lock"){
carLock();
if(respond){ sendSms("Doors Locked"); }
}
else if(smsMessage == "unlock"){
carUnlock();
if(respond){ sendSms("Doors Unlocked"); }
}
else if(smsMessage == "trunk"){
carTrunk();
if(respond){ sendSms("Trunk Popped"); }
}
else if(smsMessage == "finder"){
carStart();
if(respond){ sendSms("Finder Activated"); }
}
else if(smsMessage == "rspon"){
respond = true;
sendSms("Respond to commands: On");
}
else if(smsMessage == "rspoff"){
respond = false;
sendSms("Respond to commands: Off");
}
else if(smsMessage == "temp"){
sensors.requestTemperatures();
// Get temperature as a float and convert it to a string
float temperature = sensors.getTempCByIndex(0);
char buffer[10];
String temperatureString = dtostrf(temperature, 5, 1, buffer);
String tempMsg = "Temperature: " + temperatureString;
Serial.println(tempMsg);
sendSms(tempMsg);
}
else if (smsMessage == "ping"){
sendSms("Pong!");
}
else{
if(respond){ sendSms("Invalid command"); }
Serial.println("Invalid command");
}
}
}
else{
Serial.println("No SMS messages");
}
}
else{
Serial.println("Not connected to home cell network");
}
delay(500);
LowPower.powerDown(SLEEP_8S, ADC_OFF, BOD_OFF);
}
void sendSms(String message){
Serial.println("Sending message");
char smsCommand[23];
String commandStr = "AT+CMGS=\"" + myPhoneNum + "\"";
commandStr.toCharArray(smsCommand,23);
if(sendCommand(smsCommand, ">", 1000)){
SIM900.println(message);
SIM900.println((char)26);
SIM900.println();
delay(2000);
}
}
void carLock(){
digitalWrite(lockPin, HIGH);
delay(1000);
digitalWrite(lockPin, LOW);
Serial.println("Doors locked");
}
void carUnlock(){
digitalWrite(unlockPin, HIGH);
delay(1000);
digitalWrite(unlockPin, LOW);
Serial.println("Doors unlocked");
}
void carStart(){
digitalWrite(starterPin, HIGH);
delay(1000);
digitalWrite(starterPin, LOW);
Serial.println("Car Starting");
}
void carTrunk(){
digitalWrite(auxPin, HIGH);
delay(2000);
digitalWrite(auxPin, LOW);
Serial.println("Trunk Released");
}
void carFind(){
digitalWrite(auxPin, HIGH);
digitalWrite(starterPin, HIGH);
delay(1000);
digitalWrite(auxPin, LOW);
digitalWrite(starterPin, LOW);
Serial.println("Car Finder Activated");
}
void SIM900poweron()
// Software equivalent of pressing the GSM shield "power" button
{
//Wake up modem with an AT command
sendCommand("AT", "OK", 1000);
if(sendCommand("AT", "OK", 2000) == 0){
digitalWrite(9, HIGH);
delay(1000);
digitalWrite(9, LOW);
delay(7000);
}
}
int sendCommand(char* ATcommand, char* expected_answer, unsigned int timeout){
int answer=0;
int responsePos=0;
char response[100];
unsigned long previous;
memset(response, '\0', 100); // Clears array
delay(100);
while( SIM900.available() > 0) SIM900.read(); // Clean the input buffer
SIM900.println(ATcommand); // Send the AT command
responsePos = 0;
previous = millis();
// this loop waits for the answer
do{
// if there are data in the UART input buffer, reads it and checks for the asnwer
if(SIM900.available() != 0){
response[responsePos] = SIM900.read();
responsePos++;
// check if the desired answer is in the response of the module
if (strstr(response, expected_answer) != NULL)
{
answer = 1;
}
}
// Waits for the asnwer with time out
}while((answer == 0) && ((millis() - previous) < timeout));
return answer;
}