i2c and integer

Forum 2005-2010 (read only) Hardware Interfacing
1

hello,
at first excuse me for my english,

i have a question i use wire library to trasmit between 2 arduinos and i don't know if i can trasmit an integer value. if i can, how i can do it?

thank you

2

I would imagine you can send anything, but only a byte at a time.
So you would get the number and use mod & div to split the number up.

3

here is an example:

Wire.send((byte)(integerValue >>8)); // sends the most significant byte
Wire.send((byte)(integerValue & 0xff)); // sends the least significant byte

the receiving side has to reconstruct the integer
val = Wire.receiver() << 8; // get the msb
val += Wire.receive(); // get the lsb

4

thank you very much