Initial Commit

2018-04-20 10:15:15 +01:00
parent 49150ccfe4
commit 62101e8e61
2870 changed files with 520122 additions and 0 deletions
--- a/Java/Processing/processing-3.3.6/modes/java/libraries/io/examples/I2CDigitalAnalog/I2CDigitalAnalog.pde
+++ b/Java/Processing/processing-3.3.6/modes/java/libraries/io/examples/I2CDigitalAnalog/I2CDigitalAnalog.pde
@@ -0,0 +1,27 @@
+import processing.io.*;
+I2C i2c;
+
+// MCP4725 is a Digital-to-Analog converter using I2C
+// datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/22039d.pdf
+
+void setup() {
+  //printArray(I2C.list());
+  i2c = new I2C(I2C.list()[0]);
+}
+
+void draw() {
+  background(map(mouseX, 0, width, 0, 255));
+  setAnalog(map(mouseX, 0, width, 0.0, 1.0));
+}
+
+// outputs voltages from 0V to the supply voltage
+// (works with 3.3V and 5V)
+void setAnalog(float fac) {
+  fac = constrain(fac, 0.0, 1.0);
+  // convert to 12 bit value
+  int val = int(4095 * fac);
+  i2c.beginTransmission(0x60);
+  i2c.write(val >> 8);
+  i2c.write(val & 255);
+  i2c.endTransmission();
+}