i just wanted to confirm is it my connection or is the new forum really slowing things a little bit.


thank you guys, anyways u do a wonderful job

please pals one urgent request, is this module alone is enough ( anything else to be bought along with it? ) and can it be interfaced to arduino uno!

please reply guys.


thanks

download this tutorial it has verything right from installing to programming of php
http://btjunkie.org/torrent/Lynda-com-PHP-With-MySQL-Essential-Training-DVD/435856189f982f6d1320494b2ffdcf70e3ff2c76150f

k i found one thing for sure php serial class is NOT BI DIRECTIONAL for windows............................ ( for until now atleast)

you can send data to arduino with EASE

but the reverse is not possible ( again until now)

k, i understood one thing ... from your reply

my idea was to implement a rfid +arduino + webpage ( using php ) to implement a targeted advertisement....

but now i am clear that web page need not necessarily be written in php but i could use flash which which too could be interfaced with arduino easily... thank you

going with flash for website design...

thank you ! but i am collecting this information for my final year project so that i could go ahead and purchase stuff only after confirming that those works...

anyway  thank you..

thanks a lot for the reply i understood the example.php and php_serialclass.php from your explanation but one thing still is not clear...

let me put it this way to communicate with arduino using the serial class need i have to buy a rs232 converter to connect arduino to rs232 serial port in my computer or is the usb interface enough...


one more too
 i found this link in google code where a guy has written code for read function in php serial class does this work?

the link is : http://code.google.com/p/php-serial/issues/detail?id=1#c0

thank you

http://www.phpclasses.org/package/3679-PHP-Communicate-with-a-serial-port.html

a little info i downloaded the above two files ( prev post ) from here..

please help guys

i may sound a little dumb but please answer ...

1. I learnt about php serial and found that it could be used to communicate with arduino via serial port but i can't seem to figure out whether it is rs232 or usb port ... (please clarify )

2. i downloaded these  two php files from phpserial class website

php_serial.class.php and example.php

my question is are they standalone like just modifying example.php with the function we would need it to perform would allow communication to arduino?  

please reply..

k i never thought that. will change that now

I am documenting all the stages of my project in http://www.frankey.webs.com . thank you all . please continue to guide me. thanks all.

i used visual studio 2010 ( it had vb6) i think that you too are takling about the same .... but don't know for sure

thanks a lot for all your help i finally got eberything lined up and working
 i understood that serial.read returns bytes not integer and that to compare strings we need strcmp()
thanks

the code which FINALLY worked is

Code:

Private Sub Form_Load()
MSComm1.CommPort = 3
' 9600 baud, no parity, 8 data, and 1 stop bit.
MSComm1.Settings = "9600,N,8,1"
' Tell the control to read entire buffer when Input
' is used.
MSComm1.EOFEnable = True

MSComm1.InputLen = 0
MSComm1.RThreshold = 4  ' IMPORTANT change this to change the number of characters to be received
MSComm1.SThreshold = 3

' Open the port.
MSComm1.PortOpen = True
End Sub

Private Sub MSComm1_OnComm()
Dim inbuffer() As Byte 'Declare an array of bytes
Dim b() As Byte

Dim i As Long
Dim s As String

Select Case Me.MSComm1.CommEvent
Case comEvReceive
ReDim inbuffer(Me.MSComm1.InBufferCount) 'Specify the size of the array. InBuffercount gives the number of characters in the InputBuffer

inbuffer = Me.MSComm1.Input 'Read the InputBuffer


 
For i = 0 To UBound(inbuffer) 'Ubound(inbuffer) gives the upper bound of the array, which is equal to the number of characters in the InputBuffer

Me.txtreceive.Text = Me.txtreceive.Text & Chr$(inbuffer(i)) 'TxtReceive is a text box

Next i

s = StrConv(inbuffer, vbUnicode)
End Select

MsgBox s
Dim string2 As String
string2 = "1234"
If StrComp(s, string2, vbTextCompare) = 0 Then
MsgBox s
MSComm1.Output = "YES"
End
Else
MSComm1.PortOpen = False
End If

End Sub

and in the arduino side

Code:

char inData[20]; // Allocate some space for the string
char inChar; // Where to store the character read
byte index = 0; // Index into array; where to store the character
int ledpin =13;
void establishContact();
void setup()
{
  // start serial port at 9600 bps:
  Serial.begin(9600);
  Serial.flush();
  pinMode(ledpin, OUTPUT);   // digital sensor is on digital pin 2
  establishContact();  // send a byte to establish contact until receiver responds
          
 }


void loop()
{
  // if we get a valid byte, read analog ins:
     while(Serial.available() > 0) // Don't read unless
                                                  // there you know there is data
   {
        //digitalWrite(ledpin,HIGH);
            if(index < 19) // One less than the size of the array
       {
          
             inChar = Serial.read(); // Read a character
           inData[index] = inChar; // Store it
           index++; // Increment where to write next
           inData[index] = '\0'; // Null terminate the string
       }
   }
    if (strcmp(inData,"YES")==0)
     {
        digitalWrite(ledpin,HIGH);
        Serial.print(inData);
     }
        
}

void establishContact()
{
//  while (Serial.available() <= 0)
  //{
    Serial.print("1234");
        // send an initial string
    delay(300);
    
 // }
}

thank you

okay then started phase 2


i would like to send "y" in vb so that arduino would turn on led

but i dont know how arduino interprets the received "y" from vb

{note: i had confirmed that vb is sending string only using MSComm1.output="y" }

but my arduino is not interpreting it correctly please help

this is the code i used

Code:

int i;
char rec[7];
char str3 = "Y";
void establishContact();
void setup()
{
  // start serial port at 9600 bps:
  Serial.begin(9600);
  Serial.flush();
  pinMode(13, OUTPUT);   // digital sensor is on digital pin 2
  establishContact();  // send a byte to establish contact until receiver responds
          
 }


void loop()
{
  // if we get a valid byte, read analog ins:
   for (i=0;i<Serial.available();i++)
    {
    rec[i]=Serial.read();
     }
  delay(10);
        if (rec==str3)
     {
        Serial.print("firs");
        digitalWrite(13,HIGH);
     }
    
}

void establishContact()
{
  //while (Serial.available() <= 0)
  //{
    Serial.print("SEND");
    //Serial.println(byte(26));
    // send an initial string
    delay(300);
    
  //}
}

thanks a lot thanks a lot


i figured it out


thanks

it lay in a single line

Code:

MSComm1.RThreshold = 4

changing that to 4 did the trick


mscomm event fires only after 4 characters (SEND)

works great and feels great

thanks