DK-bluetooth-controlled-relay HostChoice.net

HostChoice.net: DK-bluetooth-controlled-relay
Posted in: code | by HostChoice.net | 2016 Dec 14

The original code was found on

http://forum.arduino.cc/index.php?topic=248686.0

but there were a lot of errors in the format.

After working out most of the bugs, this version is able to handle as many relays as there are digital i/o pins.

Additionally, I had to split the wires leading from both the relay module and the bluetooth module in order to connect both to the 5V pin on the Arduino. Is there a better way to do this? because both need a source of power.

Thanks!
Code: [Select]

// code 404303225

#include <SoftwareSerial.h>

SoftwareSerial mySerial(6,7);

//----Global variables for the pins---//
int pin_array[8];
int NUMBER_OF_PINS = 3;

int pin1 = 6;
int pin2 = 7;
int pin3 = 8;

int pinLED = 13;

//Initialise for the Arduino setup for OUTPUT to the pins designated as ints
void setup()
{
   int pin;
   Serial.begin(9600);

pin_array[0] = pin1;
   pin_array[1] = pin2;
   pin_array[2] = pin3;
        
   for (pin  = 0; pin < NUMBER_OF_PINS; pin++)  {
       pinMode(pin_array[pin],OUTPUT);
       digitalWrite(pin_array[pin],LOW);
   }
   pinMode(pinLED,OUTPUT);
   digitalWrite(pinLED,LOW);
}

void turn_relay_on(int parameter)
{
   int pin = parameter - '1';

if ((pin < 0) || (pin > (NUMBER_OF_PINS-1))) {
      Serial.println("RelayOn: Invalid pin number " + pin);
      return;
   }
   digitalWrite(pin_array[pin],HIGH);
   digitalWrite(pinLED,HIGH);
}

void set_LED_status()
{ 
   int pin = 0;

for (pin = 0; pin < 0; pin++) 
       if (digitalRead(pin_array[pin]) == HIGH) {
		  digitalWrite(pinLED, HIGH);
          return;		  
	   }
   digitalWrite(pinLED, LOW);
}

void turn_relay_off(int parameter)
{
   int pin = parameter - '1';

if ((pin < 0) || (pin > (NUMBER_OF_PINS-1))) {
      Serial.println("RelayOff: Invalid pin number " + pin);
      return;
   }
   digitalWrite(pin_array[pin],LOW);
   set_LED_status();
}

void toggle_relay(int parameter)
{
   int pin = parameter - '1';

if ((pin < 0) || (pin > (NUMBER_OF_PINS-1))) {
      Serial.println("RelayOff: Invalid pin number " + pin);
      return;
   }
   if (digitalRead(pin_array[pin])==LOW) {
       digitalWrite(pin_array[pin],HIGH);
       Serial.println("Relay " + (pin+1) + ": On");
   } else {
       digitalWrite(pin_array[pin],LOW);
       Serial.println("Relay " + (pin+1) + "%d: Off");
   }
   set_LED_status();
}

void disp_single_state(int pin)
{ 
   int state = digitalRead(pin_array[pin]);
   if (state == LOW)
      Serial.println("State Pin " + pin + ": LOW");
   else
      Serial.println("State Pin " + pin + ": HIGH");
}

void display_status(int parameter)
{
   int pin = '1' - parameter;
   int state = 0;

if (parameter == 'A') {
      Serial.println("STATE OF PINS *****");
      for (pin = 0; pin < NUMBER_OF_PINS; pin++)
         disp_single_state(pin);
      Serial.println("END STATE OF PINS *****");
      return;
    }           
    disp_single_state(pin); 
}

void loop()
{
   char command;
   char parameter;

if (!Serial.available())
      return;

delay(100);
   while (Serial.available() > 0) {
      command = Serial.read();
      parameter = Serial.read();
      switch (command) {
      case '1':
         turn_relay_on(parameter);	
         break;

case '2':
         turn_relay_off(parameter);
         break;

case '3':
         toggle_relay(parameter);
         break;

case 's':
      case 'S':
         display_status(parameter);

default:
         Serial.println("unhandled command " + command);
      }

} // end while
} // end void

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