Wrote PR controller sketches for slave and master

1 files changed, 40 insertions, 0 deletions

diff --git a/Digital Photoreactor Controller Firmware/Master_Photoreactor_Controller/Master_Photoreactor_Controller.ino b/Digital Photoreactor Controller Firmware/Master_Photoreactor_Controller/Master_Photoreactor_Controller.ino
new file mode 100644
index 0000000..8c2ffa4
--- /dev/null
+++ b/Digital Photoreactor Controller Firmware/Master_Photoreactor_Controller/Master_Photoreactor_Controller.ino
@@ -0,0 +1,40 @@
+////////////////////////////////////////////////////////////////////////////////////
+//       Digital Photoreactor Controller Slave Program Controlled by I2C          //
+//          Run this slave program on the Arduino Uno or Rasberry Pi.             //      
+////////////////////////////////////////////////////////////////////////////////////
+
+#include <Wire.h>
+
+#define I2C_SLAVE_ADDR  0x26            // I2C slave address (38, 0x26)
+
+void setup()
+{
+  // init the Wire object
+  Wire.begin(); 
+  
+  // wait for slave to finish any init sequence
+  delay(2000);
+}
+
+void loop()
+{
+
+  //generate buffer containing data to send via I2C
+  uint8_t buf[1];
+  buf[0] = 25;  // adjusting this byte changes fan speed. Can be adjusted from 0 to 256.
+  buf[1] = 1;  // adjusting this byte changes LED intensity. Can be adjusted from 0 to 256. 
+
+  // send buffer 
+  Wire.beginTransmission(I2C_SLAVE_ADDR);
+  Wire.write( buf, 2);
+  Wire.endTransmission();
+  
+  // delay 20 milliseconds to accomodate slave onReceive()
+  delay(20);
+
+  /////////////////////// WHY DO I NEED THIS PART?//////////////////////////
+  Wire.requestFrom(I2C_SLAVE_ADDR, 1);
+  
+  // delay 1 second so user can watch results
+  delay(1000);
+}