Oh. I didn't read all posts, just first one. I got serial communication with Arduino with that class.

Don't bother yourself when it's already done for you:
http://code.google.com/p/php-serial/

http://www.instructables.com/id/Arduino-on-all-sorts-of-Atmels/#step1

Thank you so much

How I can convert String object to integer? Thanks.

It's you again. Thank you one more time. It's finally working.

Code:

char str[25];
int i=0;
int str_len;
int inByte;
int last_inByte;
String rezultat;
int baud = 9600;

void setup() {
  Serial.begin(baud);
}

void loop() {
  inByte = Serial.read();
  str_len=0;
  if (inByte == '!') read_serial();
}

void read_serial() {
  Serial.println ("SOL FOUND and reading");
  Serial.print("READ: !\n");
  while (inByte!= '*')
  if (Serial.available() > 0) {
    inByte = Serial.read();
    Serial.print("READ: ");
    str[str_len] = inByte;
    Serial.println(str[str_len]);
    str_len++;
  } else if (Serial.available() == 0) {
    Serial.println("EOL not available, data string invalid");
    break;
  }

  if (inByte == '*') {
    Serial.println ("EOL FOUND");
    rezultat = "";
    for (i=0;i<(str_len-1);i++) {
      rezultat += str[i];
    }
    if(rezultat == "YES") {
      Serial.println("Yeah");
    }
      Serial.print ("\n");
    }
}

Anyone?

It's inside for loop. It will loop only as much times as there are bytes waiting. I can print it, and everything is normal.

Bump?

Code:

char str[25];
int i=0;
int str_len;
int inByte;
int last_inByte;
String rezultat;

void setup() {
  Serial.begin(9600);
}

void loop() {
  inByte = Serial.read();
  str_len=0;
  if (inByte == '!') read_serial();
}

void read_serial() {
  Serial.println ("SOL FOUND and reading");
  Serial.print("READ: !\n");
  while (inByte!= '*')
  if (Serial.available() > 0) {
    inByte = Serial.read();
    Serial.print("READ: ");
    str[str_len] = inByte;
    Serial.println(str[str_len]);
    str_len++;
  } else if (Serial.available() == 0) {
    Serial.println("EOL not available, data str invalid");
    Serial.println("$N");
    break;
  }

  if (inByte == '*') {
    Serial.println ("EOL FOUND");
    for (i=0;i<(str_len-1);i++) {
      rezultat += str[i];
    }
    if(rezultat == "YES") {
      Serial.write("Yeah");
    }
      Serial.print ("\n");
    }
}

I get 'Yeah' back only if I send !YES* as first send thing from opening serial monitor. Otherwise I don't get 'Yeah' at all. Please help.

Well, I have whole data in array when I'm receiving. But I can't check value with 'if' if I don't connect whole array in one variable.

How I can connect multiple variables in one variable (something like . in php)? I need that for receiving array trough serial.

Can someone write me custom function to split txt in two 8 digit variables? I will be very thankful.

Thx for help, but it's still same. No difference at all.

So, I got my lcd working. But in weird way. It shows only half of text (8 letters). I can show second half if I mark lcd as 16x2 (and it's not!) in code. Then I point cursor to (0, 1) and show next half of letters (8 in same line as before). It's a little bit stupid. Dose all 16x1 lcd work this way or is it bug in lcd or my code?

Show only half of text:

Code:

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  lcd.begin(16, 1);
  lcd.print("hello, world!");
}

void loop() {
}

Show full text:

Code:

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  lcd.begin(16, 2);
  lcd.print("hello, w");
  lcd.setCursor(0, 1);
  lcd.print("orld!");
}

void loop() {
}