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Release 5.0
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@cessnas
cessnas committed Nov 12, 2021
1 parent d566223 commit 52e3835
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Showing 2 changed files with 54 additions and 39 deletions.
1 change: 1 addition & 0 deletions .vscode/c_cpp_properties.json
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Expand Up @@ -18,6 +18,7 @@
"C:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino",
"C:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\eightanaloginputs",
"C:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\libraries\\SoftwareSerial\\src",
"C:\\Users\\Sigurd Myhre\\Documents\\Arduino\\libraries\\Regexp\\src",
"c:\\program files (x86)\\arduino\\hardware\\tools\\avr\\lib\\gcc\\avr\\7.3.0\\include",
"c:\\program files (x86)\\arduino\\hardware\\tools\\avr\\lib\\gcc\\avr\\7.3.0\\include-fixed",
"c:\\program files (x86)\\arduino\\hardware\\tools\\avr\\avr\\include"
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92 changes: 53 additions & 39 deletions RemoteStart.ino
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
// ====================================================================================
// Authors: Sigurd Myhre & Sivert Gullberg Hansen
// Version: 4.0
// Version: 5.0
// Required Modules: SIM800L
// ====================================================================================

Expand All @@ -11,10 +11,11 @@ SoftwareSerial sim800l(3, 2); //SIM800L TX and RX pins

// User variables (You have to change these)
// ====================================================================================
String userPhone = "95756768"; // Whitelisted phone number (country code not required)
String statusString = "The engine is X,\nThe running time is set to Y min"; // The string we return to the userPhone when asking for a status. X is engineStatus, Y is RunTime
String engineStopped = "stopped"; // Used in status-string
String engineStarted = "started"; // Used in status-string
String userPhone = "95756768"; // Whitelisted phone number (country code not required)
String statusString = "The engine is X,\nThe run time is set to Ymin"; // The string we return to the userPhone when asking for a status. X is engineStatus, Y is RunTime
String engineStopped = "stopped"; // Used in status-string
String engineStarted = "started"; // Used in status-string
int maxStartAttempts = 3;
// ====================================================================================

// Arduino to car pins (Change if you're not using the same digital pins on the arduino as me)
Expand All @@ -39,14 +40,14 @@ String cmdStop = "stop"; //Trigger word for the engine to stop, this wil
// ====================================================================================
long startTime = 0; // Which time our engine started running
long RunTime = 900000; // ms to have engine running before shutting off after starting
int maxTime = 40; // max minutes RunTime is allowed to be set to by the user via SMS
int maxRunTime = 30; // max minutes RunTime is allowed to be set to by the user via SMS
// ====================================================================================

//Timers for the engine start procedure(Change these if necesarry)
// ====================================================================================
int primeDuration = 2000; //This is the time the engine is primed for, on petrol cars this doesnt need to be long. But on diesel cars this may be set to longer for the glowplug to warm up
int starterMaxDuration = 2800; //This is the maximum time for our starter to be enganged
int starterDelay = 1000; //This is the time between shutting the starterPin off
int primeDuration = 3000; //This is the time the engine is primed for, on petrol cars this doesnt need to be long. But on diesel cars this may be set to longer for the glowplug to warm up
int starterMaxDuration = 3000; //This is the maximum time for our starter to be enganged
int starterDelay = 2000; //This is the time between shutting the starterPin off and checking voltages
// ====================================================================================

//Resistors for voltage devider(Change these if necesarry)
Expand Down Expand Up @@ -83,7 +84,7 @@ void sim800Setup() // Initialize sim-reader
sim800l.println("AT+CNMI=1,2,0,0,0"); // Decides how newly arrived SMS messages should be handled
}

void changePin(int Pin, int PinMode, int DelayTime)
void changePin(int Pin, int PinMode, int DelayTime) // Sets pin to either high or low with a delay after
{
digitalWrite(Pin, PinMode);
delay(DelayTime);
Expand All @@ -106,58 +107,66 @@ void sendStatus() // Sends a reply to the userPhone including vehicle-status
Reply(returnString);
}

void changeRunTime(string message) // Changes how long the engine stays powered on before powering down
void changeRunTime(String messageString) // Changes how long the engine stays powered on before powering down
{
int newRunTime = int();
RunTime = newRunTime;
String msg = messageString;
msg = msg.substring(messageString.indexOf(cmdChangeTime) + cmdChangeTime.length() + 1);
int newRunTime = msg.toInt();

if (newRunTime >= maxRunTime || newRunTime <= 0)
RunTime = maxRunTime * 60000;
else
RunTime = newRunTime * 60000;

Reply("The run time is set to: " + String(RunTime / 60000) + "min");
}

void startEngine() // Starts our engine
{
if (digitalRead(NeutSwitchPin == HIGH) && digitalRead(IgnHotPin == LOW))
if (digitalRead(NeutSwitchPin) == LOW && digitalRead(IgnHotPin) == LOW)
{
changePin(ignPin, 1, primeDuration);
int currentStarterTime = millis();
float currentBatteryVolt = 0;
long currentStarterTime = millis();

while (
batteryVoltage() > currentBatteryVolt + 1 ||
batteryVoltage() > 13 ||
millis() - currentStarterTime <= starterMaxDuration)
while (true)
{
changePin(startPin, 1, 0); // Set starter to ON
currentBatteryVolt = batteryVoltage();0
Serial.println("Starter engaged");
changePin(startPin, 1, 0); // Set starter to ON with 0 delay

if (batteryVoltage() > 15 || millis() - currentStarterTime >= starterMaxDuration)
{
break;
}
}

Serial.println("Starter disengaged");
changePin(startPin, 0, starterDelay); // Set starter to OFF

if (batteryVoltage() > 13)
if (batteryVoltage() > 15)
{
digitalWrite(lightFanPin, HIGH);
startTime = millis();
delay(2000);
}
else
{
Reply("Engine has failed starting, retrying");
startEngine();
changePin(ignPin, 0, 0);
Reply("Engine has failed starting, starter max duration reached"); //Runs the startEngine loop again if it detected that the engine has not started
}
}
else if (digitalRead(NeutSwitchPin) == LOW)
Reply("Failed to start, car is in gear!");
}

void stopEngine() // Stops our engine
{
digitalWrite(ignPin, LOW);
digitalWrite(startPin, LOW);
digitalWrite(lightFanPin, LOW);
Reply("Engine is stopped"); //Change this if you want to change what the reply text is for when the stop command is sent
Reply("Engine has stopped"); //Change this if you want to change what the reply text is for when the stop command is sent
}

void readCommand(String messageString) // Read commands from messageStrings
{
Serial.println("Message Received: \n" + messageString);
Serial.println("Message Received: " + messageString);

if (messageString.indexOf(cmdStatus) >= 0)
{
Expand All @@ -167,7 +176,7 @@ void readCommand(String messageString) // Read commands from messageStrings
else if (messageString.indexOf(cmdChangeTime) >= 0)
{
Serial.println("Command: Change Time Confirmed");
changeRunTime();
changeRunTime(messageString);
}
else if (messageString.indexOf(cmdStart) >= 0)
{
Expand Down Expand Up @@ -202,10 +211,6 @@ void CheckPhone(String messageString) // Compares userPhone-value to message's p
{
readCommand(messageString);
}
else if (messageString.length() > 18)
{
Serial.println("Phone number invalid! Has to be: " + userPhone);
}
}

float batteryVoltage()
Expand All @@ -215,7 +220,7 @@ float batteryVoltage()

void engineLoop() // Checks our engine's status and applies measures
{
if (digitalRead(IgnHotPin) == HIGH) // If key is turned while remote start active, disable remote start-script
if (digitalRead(IgnHotPin) == HIGH) // If key is insterted while remote start active, then this will disable the remote start-script
{
digitalWrite(startPin, LOW);
digitalWrite(ignPin, LOW);
Expand All @@ -229,9 +234,18 @@ void engineLoop() // Checks our engine's status and applies measures
}
}

void changeCommandsToLowercase()
{
cmdChangeTime.toLowerCase();
cmdStatus.toLowerCase();
cmdStart.toLowerCase();
cmdStop.toLowerCase();
}

void setup() // Setup arduino
{
Serial.begin(115200); //Start serial over USB at speed 115200
changeCommandsToLowercase(); // Changes all commands to lower-case
Serial.begin(115200); //Start serial over USB at speed 115200
sim800Setup();
pinSetup();
}
Expand Down Expand Up @@ -264,8 +278,8 @@ void Reply(String text) // Sends a reply to our phone
sim800l.print("AT+CMGS=\"" + userPhone + "\"\r");
delay(1000);
sim800l.print(text);
delay(100);
delay(300);
sim800l.write(0x1A); //ascii code for ctrl-26 //sim800.println((char)26); //ascii code for ctrl-26
delay(1000);
delay(500);
Serial.println("SMS Sent Successfully.");
}
}

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