Hello and welcome, There is a 64-chars input buffer in which the received characters are stored until they are read. This is working as a queue. Serial.read will dequeue the first character. So, consecutive calls to Serial.read will read all the received characters. You must read the received characters (emptying the buffer) as fast as possible, or you will lose data if the buffer is full, because it is shifted to make room for the newly received character newly received characters will then be discarded. Serial is all 1 byte at a time, the serial byte has a start bit, 8 data bits and a stop bit, all 1 at a time.
Unsigned int controllerInputVal=0; // Max value is 65535. Char incomingByte. Serial Call and Response (handshaking). ASCIITable - Demonstrates Arduino's advanced serial output functions. Dimmer - Move the mouse to change the brightness of an LED. VirtualColorMixer - Send multiple variables from Arduino to your computer and read them in Processing or Max/MSP.
When you write or read serial, none of it 'has to go together' and every byte arrives over time. Your controller is insanely faster than Serial, why you check for serial available before reading it.
![Arduino serial print multiple bytes Arduino serial print multiple bytes](/uploads/1/2/5/6/125618651/759319375.png)
Your code can read 1 byte at a time and assemble the data then or copy the data into an array and do thew same thing after the data is completely sent. The latter method will need more RAM and always finishes later, but it's what beginners and IT dimwits are usually taught to do. If you want an intro to read and interpret as bytes come in, the second address in my sig space below is to Nick Gammon's blog on reading serial without blocking, the State Machine section will give you a power tool for real time coding. If you don't know what 'blocking' is, the first address has a lesson on that and how to make many things work together smoothly. Seriously, for small-memory microcontrollers these are 'how it's done' since there were microcontrollers. Use PC approaches when you want to limit what your device can achieve.
![Multiple Multiple](/uploads/1/2/5/6/125618651/735747571.jpg)
Hi, I'm Luis Taveras I just wanna know how to send 2 bytes messages by the arduinos serial port. I already know that it only sends 1 byte messages, that's why i divide the 2 bytes messages into two 1 byte messages, then i send it by the arduinos serial port like this: Serial.write(message1); Serial.write(message2); So i need to know if this is fine and how to recover the data in the other side without errors. Just for you to know i can't use any library just algorithms, because it's a college project.