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I/O: Add examples · ThunderPower/processing@377616f · GitHub

  1. ThunderPower
  2. processing

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Commit 377616f

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gohai
committed
I/O: Add examples
1 parent a0d5cd7 commit 377616f

11 files changed

Lines changed: 275 additions & 0 deletions

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‎java/libraries/io/examples/I2CCompass/I2CCompass.pde‎

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import processing.io.*;
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I2C i2c;
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// HMC6352 is a digital compass module using I2C
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// datasheet: https://www.sparkfun.com/datasheets/Components/HMC6352.pdf
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void setup() {
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//printArray(I2C.list());
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i2c = new I2C(I2C.list()[0]);
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setHeadingMode();
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}
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void draw() {
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background(255);
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float deg = getHeading();
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println(deg + " degrees");
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line(width/2, height/2, width/2+sin(radians(deg))*width/2, height/2-cos(radians(deg))*height/2);
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}
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void setHeadingMode() {
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i2c.beginTransmission(0x21);
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// command byte for writing to EEPROM
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i2c.write((byte) 0x77);
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// address of the output data control byte
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i2c.write((byte) 0x4e);
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// give us the plain heading
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i2c.write((byte) 0x00);
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i2c.endTransmission();
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}
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float getHeading() {
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i2c.beginTransmission(0x21);
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// command byte for reading the data
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i2c.write((byte) 0x41);
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byte[] in = i2c.read(2);
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i2c.endTransmission();
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// put bytes together to tenth of degrees
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// & 0xff makes sure the byte is not interpreted as a negative value
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int deg = (in[0] & 0xff) << 8 | (in[1] & 0xff);
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// return degrees
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return deg / 10.0;
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}

‎java/libraries/io/examples/I2CDigitalAnalog/I2CDigitalAnalog.pde‎

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import processing.io.*;
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I2C i2c;
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// MCP4725 is a Digital-to-Analog converter using I2C
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// datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/22039d.pdf
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void setup() {
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//printArray(I2C.list());
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i2c = new I2C(I2C.list()[0]);
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}
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void draw() {
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background(map(mouseX, 0, width, 0, 255));
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setAnalog(map(mouseX, 0, width, 0.0, 1.0));
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}
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// outputs voltages from 0V to the supply voltage
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// (works with 3.3V and 5V)
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void setAnalog(float fac) {
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fac = constrain(fac, 0.0, 1.0);
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// convert to 12 bit value
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int val = int(4095 * fac);
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i2c.beginTransmission(0x60);
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i2c.write((byte) (val >> 8));
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i2c.write((byte) (val & 255));
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i2c.endTransmission();
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}

‎java/libraries/io/examples/I2CDigitalAnalogOOP/I2CDigitalAnalogOOP.pde‎

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import processing.io.*;
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MCP4725 dac;
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void setup() {
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//printArray(I2C.list());
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dac = new MCP4725(I2C.list()[0], 0x60);
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}
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void draw() {
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background(map(mouseX, 0, width, 0, 255));
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dac.setAnalog(map(mouseX, 0, width, 0.0, 1.0));
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}

‎java/libraries/io/examples/I2CDigitalAnalogOOP/MCP4725.pde‎

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import processing.io.I2C;
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// MCP4725 is a Digital-to-Analog converter using I2C
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// datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/22039d.pdf
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class MCP4725 extends I2C {
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int address;
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// there can be more than one device connected to the bus
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// as long as they have different addresses
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MCP4725(String dev, int address) {
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super(dev);
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this.address = address;
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}
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// outputs voltages from 0V to the supply voltage
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// (works with 3.3V and 5V)
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void setAnalog(float fac) {
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fac = constrain(fac, 0.0, 1.0);
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// convert to 12 bit value
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int val = int(4095 * fac);
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beginTransmission(address);
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write((byte) (val >> 8));
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write((byte) (val & 255));
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endTransmission();
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}
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}

‎java/libraries/io/examples/Interrupt/Interrupt.pde‎

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import processing.io.*;
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color bgcolor = 0;
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// RPI.PIN3 refers to the physical pin 3 on the Raspberry Pi's
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// pin header, which is located on the third row, next to a
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// Ground pin
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void setup() {
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GPIO.pinMode(RPI.PIN3, GPIO.INPUT);
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GPIO.attachInterrupt(RPI.PIN3, this, "pinEvent", GPIO.RISING);
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}
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void draw() {
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background(bgcolor);
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}
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// this function will be called whenever pin 3 is brought from LOW to HIGH
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void pinEvent(int pin) {
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println("Received interrupt");
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if (bgcolor == 0) {
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bgcolor = color(255);
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} else {
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bgcolor = color(0);
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}
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}

‎java/libraries/io/examples/LedCounter/LedCounter.pde‎

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import processing.io.*;
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LED leds[];
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// the Raspberry Pi has two build-in LEDs we can control
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// led0 (green) and led1 (red)
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void setup() {
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String available[] = LED.list();
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print("Available: ");
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println(available);
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// create an object for each LED and store it in an array
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leds = new LED[available.length];
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for (int i=0; i < available.length; i++) {
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leds[i] = new LED(available[i]);
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}
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frameRate(1);
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}
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void draw() {
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// make the leds count in binary
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for (int i=0; i < leds.length; i++) {
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if ((frameCount & (1 << i)) != 0) {
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leds[i].set(1.0);
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} else {
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leds[i].set(0.0);
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}
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}
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println(frameCount);
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}
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void keyPressed() {
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// cleanup
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for (int i=0; i < leds.length; i++) {
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leds[i].close();
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}
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exit();
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}

‎java/libraries/io/examples/SPIAnalogDigital/SPIAnalogDigital.pde‎

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import processing.io.*;
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SPI spi;
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// MCP3001 is a Analog-to-Digital converter using SPI
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// datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21293C.pdf
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void setup() {
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//printArray(SPI.list());
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spi = new SPI(SPI.list()[0]);
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spi.settings(500000, SPI.MSBFIRST, SPI.MODE0);
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}
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void draw() {
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// dummy write, actual values don't matter
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byte[] out = { 0, 0 };
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byte[] in = spi.transfer(out);
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// some input bit shifting according to the datasheet p. 16
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int val = ((in[0] & 0x1f) << 5) | ((in[1] & 0xf8) >> 3);
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// val is between 0 and 1023
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background(map(val, 0, 1023, 0, 255));
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}

‎java/libraries/io/examples/SPIAnalogDigitalOOP/MCP3001.pde‎

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import processing.io.SPI;
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// MCP3001 is a Analog-to-Digital converter using SPI
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// datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21293C.pdf
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class MCP3001 extends SPI {
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MCP3001(String dev) {
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super(dev);
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super.settings(500000, SPI.MSBFIRST, SPI.MODE0);
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}
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float getAnalog() {
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// dummy write, actual values don't matter
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byte[] out = { 0, 0 };
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byte[] in = super.transfer(out);
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// some input bit shifting according to the datasheet p. 16
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int val = ((in[0] & 0x1f) << 5) | ((in[1] & 0xf8) >> 3);
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// val is between 0 and 1023
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return val/1023.0;
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}
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}

‎java/libraries/io/examples/SPIAnalogDigitalOOP/SPIAnalogDigitalOOP.pde‎

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import processing.io.*;
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MCP3001 adc;
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void setup() {
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//printArray(SPI.list());
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adc = new MCP3001(SPI.list()[0]);
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}
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void draw() {
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background(adc.getAnalog() * 255);
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}

‎java/libraries/io/examples/SimpleInput/SimpleInput.pde‎

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import processing.io.*;
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// RPI.PIN3 refers to the physical pin 3 on the Raspberry Pi's
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// pin header, which is located on the second row, next to the
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// 5v power pin
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void setup() {
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GPIO.pinMode(RPI.PIN3, GPIO.INPUT);
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// this is equivalent to addressing the pin with its GPIO number:
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// GPIO.pinMode(2, GPIO.INPUT);
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}
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void draw() {
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// sense the input pin
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if (GPIO.digitalRead(RPI.PIN3) == GPIO.HIGH) {
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fill(255);
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} else {
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fill(204);
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}
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stroke(255);
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ellipse(width/2, height/2, width*0.75, height*0.75);
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}

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