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reading values from the serial port

[2 Replies]
- 07-Feb-2012 02:07 PM
- Forum: Programming Questions
Hi all

I'm communicating between SHT15 sensor and Arduino EtherTen via serial port.

I wanted Processing to read one set of values and evaulate it before it can read the next set of values.I am not sure if that is possible.

I have tried to do that in the code below. I get the following error. I am not sure if the way I have written my code actually is correct format.I have researched online but please advice

*****************************************************************************************************************************

*****************************************************************************************************************************

expecting SEMI, found ')'

processing.app.SketchException: Syntax error, maybe a missing semicolon?

at processing.mode.java.JavaBuild.preprocess(JavaBuild.java:307)

at processing.mode.java.JavaBuild.preprocess(JavaBuild.java:197)

at processing.mode.java.JavaBuild.build(JavaBuild.java:156)

at processing.mode.java.JavaBuild.build(JavaBuild.java:135)

at processing.mode.java.JavaMode.handleRun(JavaMode.java:176)

at processing.mode.java.JavaEditor$20.run(JavaEditor.java:481)

at java.lang.Thread.run(Thread.java:662)

*****************************************************************************************************************************

*****************************************************************************************************************************

void draw() {

//background(inByte);

for (i=0; i<0) {

i = i+ 1 ;

while (myPort.available () > 0) {

int inByte = myPort.read();

char val = char(inByte);

//print(val);

String sc = str(val);

print (sc);

//String[] values = splitTokens(sc, ", ");

//print(values[0]); // Prints "a"

//print(values[1]); // Prints "b"

}

i=0;

}

}

customized email alerts

[2 Replies]
- 01-Feb-2012 07:21 PM
- Forum: Integration and Hardware
Hi guys

I am newbie at arduino. I am working with Arduino Uno (EtherTen) and SHT15 (temperature and humidity sensor).

I have got the sensor working, also got the sensor sending email alert but the email alert is not sending the preferred values. The sensor is communicating via the serial port. I am using Windows XP machine.

Below are the bits of code used.

****************************************************************************************************************************************

****************************************************************************************************************************************

#include <SHT1x.h>

// Specify data and clock connections and instantiate SHT1x object

#define dataPin 10

#define clockPin 11

SHT1x sht1x(dataPin, clockPin);

void setup()

{

Serial.begin(38400); // Open serial connection to report values to host

Serial.println("Starting up");

}

void loop()

{

float temp_c;

float temp_f;

float humidity;

// Read values from the sensor

temp_c = sht1x.readTemperatureC();

temp_f = sht1x.readTemperatureF();

humidity = sht1x.readHumidity();

// Print the values to the serial port

Serial.print("Temperature: ");

Serial.print(temp_c, DEC);

Serial.print("C / ");

Serial.print(temp_f, DEC);

Serial.print("F. Humidity: ");

Serial.print(humidity);

Serial.println("%");

delay(2000);

}

****************************************************************************************************************************************

****************************************************************************************************************************************

****************************************************************************************************************************************

****************************************************************************************************************************************

import processing.serial.*;

import javax.mail.*;

import javax.mail.internet.*;

int val=0;

Serial myPort; // The serial port object

void setup() {

size(200,200);



println(Serial.list());

myPort = new Serial(this, Serial.list()[1], 38400);

// Function to check mail

//checkMail();

// Function to send mail

//sendMail();



//noLoop();

}

void draw() {

//Set the background

// background(val);

}

//Called whenever there is something available to read

void serialEvent(Serial port) {



val = port.read();

// For debugging

println( "Raw Input:" + val);

if (val == 10)

{

sendMail();

val=0;

}



}

****************************************************************************************************************************************

****************************************************************************************************************************************

Please advice on how to change the sensed values which are "float" to a string, separate the values required put them into different variables and then compare with set threshold values (using if loops), to send out various alerts.

Is this the simplest way to approach this project? If any one has done something similar, please point me in the right direction, that should be of huge help :)

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