I keep getting the error 'send' was not declared in this scope

Projects Programming
1

I keep getting the error 'send' was not declared in this scope
here is the code hope someone can help

#include <VirtualWire.h>

int  sensorAnalogPin = A0;    // Select the Arduino input pin to accept the Sound Sensor's analog output 
int  sensorDigitalPin = 3;    // Select the Arduino input pin to accept the Sound Sensor's digital output
int  analogValue = 0;         // Define variable to store the analog value coming from the Sound Sensor
int  digitalValue;            // Define variable to store the digital value coming from the Sound Senso

void setup()
{
  // Initialize the IO and ISR
  vw_setup(2000); // Bits per sec
    Serial.begin(9600);               // The IDE settings for Serial Monitor/Plotter (preferred) must match this speed
  pinMode(sensorDigitalPin,INPUT);  // Define pin 7 as an input port, to accept digital input
   
}

void loop()
{
    analogValue = analogRead(sensorAnalogPin); // Read the value of the analog interface A0 assigned to digitalValue 
  digitalValue=digitalRead(sensorDigitalPin); // Read the value of the digital interface 7 assigned to digitalValue 
  Serial.println(analogValue); // Send the analog value to the serial transmit interface
  
  if(analogValue>300)      // When the Sound Sensor sends signla, via voltage present, light LED13 (L)
  {
     
  send("Alarm went off");
  delay(1000);
}

void send (char *message)
{
  vw_send((uint8_t *)message, strlen(message));
  vw_wait_tx(); // Wait until the whole message is gone
}
2

Try using the auto format tool in the IDE (Ctrl-T) as it will line up are your braces and indents and will reveal your problem.

3

I tried this but I am still getting this error

4

Of course you are. You didn't really change anything but the issue should be obvious. All of your code got indented because you are missing the closing } for the loop() function.

#include <VirtualWire.h>

int  sensorAnalogPin = A0;    // Select the Arduino input pin to accept the Sound Sensor's analog output
int  sensorDigitalPin = 3;    // Select the Arduino input pin to accept the Sound Sensor's digital output
int  analogValue = 0;         // Define variable to store the analog value coming from the Sound Sensor
int  digitalValue;            // Define variable to store the digital value coming from the Sound Senso

void setup()
{
  // Initialize the IO and ISR
  vw_setup(2000); // Bits per sec
  Serial.begin(9600);               // The IDE settings for Serial Monitor/Plotter (preferred) must match this speed
  pinMode(sensorDigitalPin, INPUT); // Define pin 7 as an input port, to accept digital input

}

void loop()
{
  analogValue = analogRead(sensorAnalogPin); // Read the value of the analog interface A0 assigned to digitalValue
  digitalValue = digitalRead(sensorDigitalPin); // Read the value of the digital interface 7 assigned to digitalValue
  Serial.println(analogValue); // Send the analog value to the serial transmit interface

  if (analogValue > 300)   // When the Sound Sensor sends signla, via voltage present, light LED13 (L)
  {

    send("Alarm went off");
    delay(1000);
  }
// vvvvvvv--- strange indentation here
  void send (char *message)
  {
    vw_send((uint8_t *)message, strlen(message));
    vw_wait_tx(); // Wait until the whole message is gone
  }
5 
#include <VirtualWire.h>

int  sensorAnalogPin = A0;    // Select the Arduino input pin to accept the Sound Sensor's analog output
int  sensorDigitalPin = 3;    // Select the Arduino input pin to accept the Sound Sensor's digital output
int  analogValue = 0;         // Define variable to store the analog value coming from the Sound Sensor
int  digitalValue;
void setup()
{
  // Initialize the IO and ISR
  vw_setup(2000); // Bits per sec
  Serial.begin(9600);               // The IDE settings for Serial Monitor/Plotter (preferred) must match this speed
  pinMode(sensorDigitalPin, INPUT);
}

void loop()
{
  analogValue = analogRead(sensorAnalogPin); // Read the value of the analog interface A0 assigned to digitalValue
  digitalValue = digitalRead(sensorDigitalPin); // Read the value of the digital interface 7 assigned to digitalValue
  Serial.println(analogValue); // Send the analog value to the serial transmit interface

  if (analogValue > 300)   // When the Sound Sensor sends signla, via voltage present, light LED13 (L)
  {
    send("Hello, it's me");
    delay(1000);
  }

  void send (char *message)
  {
    vw_send((uint8_t *)message, strlen(message));
    vw_wait_tx(); // Wait until the whole message is gone
  }
}
6

I added it and it did nothing still getting that error

7

Your success depends greatly on where you added it. Was it before your send() function definition?

8

no I added it at the end

9

Hi @nuthead411
The send() function is inside the loop() function.
Test it now.

RV mineirin

#include <VirtualWire.h>

int  sensorAnalogPin = A0;    // Select the Arduino input pin to accept the Sound Sensor's analog output
int  sensorDigitalPin = 3;    // Select the Arduino input pin to accept the Sound Sensor's digital output
int  analogValue = 0;         // Define variable to store the analog value coming from the Sound Sensor
int  digitalValue;

void send (char *message)
{
    vw_send((uint8_t *)message, strlen(message));
    vw_wait_tx(); // Wait until the whole message is gone
}

void setup()
{
  // Initialize the IO and ISR
  vw_setup(2000); // Bits per sec
  Serial.begin(9600);               // The IDE settings for Serial Monitor/Plotter (preferred) must match this speed
  pinMode(sensorDigitalPin, INPUT);
}

void loop()
{
  analogValue = analogRead(sensorAnalogPin); // Read the value of the analog interface A0 assigned to digitalValue
  digitalValue = digitalRead(sensorDigitalPin); // Read the value of the digital interface 7 assigned to digitalValue
  Serial.println(analogValue); // Send the analog value to the serial transmit interface

  if (analogValue > 300)   // When the Sound Sensor sends signla, via voltage present, light LED13 (L)
  {
    send("Hello, it's me");
    delay(1000);
  }
}
10

This topic would have been much shorter if you had quoted all of the actual error messages in the first post, instead of attempting to summarise them.

11

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