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IAT 267 (14)
Lecture

IAT267_Week 7.docx

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Department
Interactive Arts & Tech
Course
IAT 267
Professor
Helmine Serban
Semester
Summer

Description
Arduino Serial Library Library-a collection of procedures, where all the procedures are related The library used is the Serial Library which allows the Arduino to send data back to the computer Serial Comm. Functions Serial.begin(speed) int Serial.available() int Serial.read() Serial.flush() Serial.print(data) Serial.printlm(data) Serial.begin(int speed) Sets the data rate in bits per second (baud) for serial data transmission For communicating with the computer, use one of these rates: -300, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, or 115200 void setup() { Serial.begin(9600); // opens serial port, sets data rate to 9600 bps } int Serial.read() Reads incoming serial data Returns an int, the first byte of incoming serial data available (or -1 if no data available) Controlling the Computer Can send data from Arduino to computer with Serial.print() There are many different variations Receiving program on the computer can be in any language that knows about serial ports -C/C++, Perl, PHP, Java, Max/MSP, Python, Visual Basic, Processing, etc. E.g. serial read blink -type in a number 1-9 and LED blinks that number -converts number typed into usable number char val = val – ‘0’: converts from char to number -characters are stored as numbers however, you can see the specific encoding in the ASCII chart -it is possible to do arithmetic on characters in which the ASCII value of the character is used Serial Communication between Arduino and Processing Only one prog
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