write() / Libraries / Processing.org

Name

write()

Class

I2C

Description

Add bytes to be written to the device

You must call beginTransmission() before calling this function. The actual writing takes part when read() or endTransmission() is being called.

Examples

import processing.io.*;
I2C dac;

void setup() {
  //printArray(I2C.list());
  dac = new I2C(I2C.list()[0]);
}

void draw() {
  background(map(mouseX, 0, width, 0, 255));

  // send value over I2C to a digital-to-analog
  // converter with address 96 (hex 0x60)
  int val = int(4095 * map(mouseX, 0, width, 0.0, 1.0));
  dac.beginTransmission(0x60);
  dac.write(val >> 8);
  dac.write(val & 255);
  dac.endTransmission();
}

Syntax

.write(out)

Parameters

out(byte[], String, int, byte)bytes to be written
out(String, byte, int)string to be written
out(int, byte)single byte to be written, e.g. numeric literal (0 to 255, or -128 to 127)
out(byte, int)single byte to be written

Return

void

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