Alrighty, let's take a look-see here. I don't know if the forum or the act of cutting and pasting is messing up the indentation here, but be absolutely sure to keep your indentation and whitespace consistent in your editor. It makes many kinds of simple bugs _much_ easier to see right away. Use either tabs or spaces for indentation, never both.
[code]
{ // If the "in" = 0 , As in I sent 0 from my phone, do the
[/code]Seem to be missing the "if" statement on this line?
[code]
analogWrite (ledpin, 0150);
[/code]Typo! You meant "150". But prefixing a number with a 0 tells the compiler to treat it as an octal number. 150 in octal is 226 in decimal!
That's because you've declared "in" to be of type "int", which is an integer. "Light on" however, is a string. Or in C-speak, an array of chars. What's probably happening is that "L" is getting stored in "in" and the rest is lost. (You can store a char into an int because an int is a larger data type. The compiler automatically does the conversion between the character "A" and it's numerical representation.)
The Serial.read() (http://arduino.cc/en/Serial/Read) function only returns one byte at a time. If you want to receive a string instead, you need to declare a character array and then use Serial.readBytes() or Serial.readBytesUntil() to read the bytes into it. See this for quick primer on dealing with strings: http://arduino.cc/en/Reference/String
Personally, I'd just toss integers around and be done with it. But I guess depending on the abilities of the application on your phone, you may have to deal with strings. It's a bit of a learning curve, but not bad once you get the hang of it.
And don't get discouraged if this programming business seems a little daunting. It is hard. You're actually doing really well!
[code]
{ // If the "in" = 0 , As in I sent 0 from my phone, do the
[/code]Seem to be missing the "if" statement on this line?
[code]
analogWrite (ledpin, 0150);
[/code]Typo! You meant "150". But prefixing a number with a 0 tells the compiler to treat it as an octal number. 150 in octal is 226 in decimal!
But the problem is that I can sent anything from 0-9 and the arduino recognizes that and does what I want.
But what if I wanted to send something like "Light on"
But what if I wanted to send something like "Light on"
The Serial.read() (http://arduino.cc/en/Serial/Read) function only returns one byte at a time. If you want to receive a string instead, you need to declare a character array and then use Serial.readBytes() or Serial.readBytesUntil() to read the bytes into it. See this for quick primer on dealing with strings: http://arduino.cc/en/Reference/String
Personally, I'd just toss integers around and be done with it. But I guess depending on the abilities of the application on your phone, you may have to deal with strings. It's a bit of a learning curve, but not bad once you get the hang of it.
And don't get discouraged if this programming business seems a little daunting. It is hard. You're actually doing really well!
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