Help with serial blinking led

Forum 2005-2010 (read only) Software Interfacing
1

Searching in internet I have found this:

/*

  • Serial Read Blink
  • Turns on and off a light emitting diode(LED) connected to digital
  • pin 13. The LED will blink the number of times given by a
  • single-digit ASCII number read from the serial port.
  • Created 18 October 2006
  • copyleft 2006 Tod E. Kurt tod@todbot.com
  • http://todbot.com/
  • based on "serial_read_advanced" example
    */

int ledPin = 13; // select the pin for the LED
int val = 0; // variable to store the data from the serial port

void setup() {
pinMode(ledPin,OUTPUT); // declare the LED's pin as output
Serial.begin(9600); // connect to the serial port
}

void loop () {
val = Serial.read(); // read the serial port

// if the stored value is a single-digit number, blink the LED that number
if (val > '0' && val <= '9' ) {
val = val - '0'; // convert from character to number
for(int i=0; i<val; i++) {
Serial.println("blink!");
digitalWrite(ledPin,HIGH);
delay(150);
digitalWrite(ledPin, LOW);
delay(150);
}
//Serial.println();
}
}

i would like to blink the led from 0 to 6000 times changing this:

if (val > '0' && val <= '6000' )

but, nothing, only blinks 9 times maximun.

How can I resolve it?

2

The code you posted was reading a single digit from the serial port. This should do what you wanted (I didn't test it though).

int ledPin = 13;   // select the pin for the LED
int val = 6000;       // variable to store the data upper limit
 
void setup() {
  pinMode(ledPin,OUTPUT);    // declare the LED's pin as output
}
 
void loop () {
  // blink the LED that number
    for(int i=0; i<val; i++) {
     digitalWrite(ledPin,HIGH);
     delay(150);
     digitalWrite(ledPin, LOW);
     delay(150);
  }
}
3

Thank you.

I resolve it using simplemessagesystem and this code:

#include <SimpleMessageSystem.h>

int ledPin = 12;   // Pin que se enciende
int val = messageGetInt();

void setup() {
  pinMode(ledPin,OUTPUT);    
  Serial.begin(9600);        
Serial.println("Numero de impulsos?");
}

void loop () {
 
  if (messageBuild() > 0) {   // si el mensaje se recibe completo (con su salto de carro)
  val = messageGetInt();      // la variable toma el valor del entero
    for(int i=0; i<val; i++) { // repite la lineas inferiores el número de veces indicado por la variable
      digitalWrite(ledPin,HIGH);
      delay(150);
      digitalWrite(ledPin, LOW);
      delay(150);
    }

    Serial.print("Impulsos= ");
    Serial.println(val, DEC);
    Serial.println("que quieres ahora??");
  }

}
4

Can somebody do exactly the same with the current messenger library?