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-rw-r--r--digital-driver/firmware/.DS_Storebin0 -> 8196 bytes
-rw-r--r--digital-driver/firmware/Master_Photoreactor_Controller/Master_Photoreactor_Controller.ino40
-rw-r--r--digital-driver/firmware/Slave_Photoreactor_Controller/Slave_Photoreactor_Controller.ino59
-rw-r--r--digital-driver/firmware/Test Sketchs/.DS_Storebin0 -> 8196 bytes
-rw-r--r--digital-driver/firmware/Test Sketchs/Master_Random_LED_I2C/Master_Random_LED_I2C.ino134
-rw-r--r--digital-driver/firmware/Test Sketchs/Slave_Random_LED_I2C/Slave_Random_LED_I2C.ino122
6 files changed, 355 insertions, 0 deletions
diff --git a/digital-driver/firmware/.DS_Store b/digital-driver/firmware/.DS_Store
new file mode 100644
index 0000000..a5dd28a
--- /dev/null
+++ b/digital-driver/firmware/.DS_Store
Binary files differ
diff --git a/digital-driver/firmware/Master_Photoreactor_Controller/Master_Photoreactor_Controller.ino b/digital-driver/firmware/Master_Photoreactor_Controller/Master_Photoreactor_Controller.ino
new file mode 100644
index 0000000..8c2ffa4
--- /dev/null
+++ b/digital-driver/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);
+}
diff --git a/digital-driver/firmware/Slave_Photoreactor_Controller/Slave_Photoreactor_Controller.ino b/digital-driver/firmware/Slave_Photoreactor_Controller/Slave_Photoreactor_Controller.ino
new file mode 100644
index 0000000..8f7acbb
--- /dev/null
+++ b/digital-driver/firmware/Slave_Photoreactor_Controller/Slave_Photoreactor_Controller.ino
@@ -0,0 +1,59 @@
+////////////////////////////////////////////////////////////////////////////////////
+// Digital Photoreactor Controller Slave Program Controlled by I2C //
+// Run this slave program on the AtTiny85. //
+////////////////////////////////////////////////////////////////////////////////////
+
+#include "TinyWireS.h" // wrapper class for I2C slave routines
+
+#define I2C_SLAVE_ADDR 0x26 // I2C slave address (38, 0x26),
+
+uint8_t master_data[1]; // global buffer to store data sent from the master.
+uint8_t master_bytes; // global variable to number of bytes sent from the master.
+
+const int LEDPin = 4; //Arduino pin 4, pin 3 on AtTiny85 pinout
+const int FanPin = 1; //Arduino pin 1, pin 6 on AtTiny85 pinout
+const int BlinkPin = 3; //Arduino pin 3, pin 2 on AtTiny85 pinout
+
+void setup()
+{
+ // initialize the TinyWireS and usiTwiSlave libraries
+ TinyWireS.begin(I2C_SLAVE_ADDR); // init I2C Slave mode
+
+ // register the onReceive() callback function
+ TinyWireS.onReceive(receiveEvent);
+
+ pinMode(LEDPin, OUTPUT); // set pin for LED PWM
+ pinMode(FanPin, OUTPUT); // set pin for Fan PWM
+ pinMode(BlinkPin, OUTPUT); // set pin to blink LED
+
+ TCCR0B = TCCR0B & 0b11111000 | 0b001; // sets internal timer of AtTiny85 to 31250 Hz for fast PWM for controlling fan speed
+}
+
+// Gets called when the ATtiny85 receives an I2C write slave request
+void receiveEvent(uint8_t num_bytes)
+{
+ uint8_t i;
+
+ // save the number of bytes sent from the master
+ master_bytes = num_bytes;
+
+ // store the data from the master into the data buffer
+ for (i = 0; i < master_bytes; i++)
+ master_data[i] = TinyWireS.receive();
+
+ // set LED and Fan PWM duty to random byte values recieved from the master
+ analogWrite(FanPin, master_data[0]);
+ analogWrite(LEDPin, master_data[1]);
+
+ // blink LED whenever data is successfuly recieved
+ digitalWrite(BlinkPin, HIGH);
+ delay(10);
+ digitalWrite(BlinkPin, LOW);
+ delay(10);
+
+}
+
+void loop()
+{
+
+}
diff --git a/digital-driver/firmware/Test Sketchs/.DS_Store b/digital-driver/firmware/Test Sketchs/.DS_Store
new file mode 100644
index 0000000..448e0b3
--- /dev/null
+++ b/digital-driver/firmware/Test Sketchs/.DS_Store
Binary files differ
diff --git a/digital-driver/firmware/Test Sketchs/Master_Random_LED_I2C/Master_Random_LED_I2C.ino b/digital-driver/firmware/Test Sketchs/Master_Random_LED_I2C/Master_Random_LED_I2C.ino
new file mode 100644
index 0000000..ac5f249
--- /dev/null
+++ b/digital-driver/firmware/Test Sketchs/Master_Random_LED_I2C/Master_Random_LED_I2C.ino
@@ -0,0 +1,134 @@
+////////////////////////////////////////////////////////////////////////////////////
+// I2C test program for Digital Photoreactor Controller using TinyWireS library //
+// Run this Master program on an Arduino Uno. //
+////////////////////////////////////////////////////////////////////////////////////
+// This test program is adapted from the TinyWireS stress test program //
+// developed by Scott Hartog: https://github.com/rambo/TinyWire //
+// //
+// The master program picks a random number of bytes between 1 and 12. //
+// It then sends that many bytes of randomd data to the AtTiny85 slave. //
+// Then, the master reads that same number of bytes back from the slave. //
+// The recieved data is then compared to the original transmitted data. //
+// The results of this comparison are displayed in the serial monitor. //
+// The process is then looped. //
+// //
+// BREADBOARD SETUP: //
+// Arduino Uno R3 (D18/SDA) = I2C SDA //
+// connect to SDA on slave with external pull-up (~4.7K) //
+// Arduino Uno R3 (D19/SCL) = I2C SCL //
+// connect to SCL on slave with external pull-up (~4.7K) //
+// Arduino Uno R3 (D2) //
+// connect to !RST on slave //
+// Can alternatively connect !RST on slave to the Ardiuno "!RESET" pin //
+// //
+////////////////////////////////////////////////////////////////////////////////////
+
+#include <Wire.h>
+
+#define I2C_SLAVE_ADDR 0x26 // i2c slave address (38, 0x26)
+
+uint16_t count = 0; // total number of passes so far
+uint16_t error_count = 0; // total errors encountered so far
+
+char c_buf[64]; // for creating messages
+
+void setup()
+{
+
+ // init the serial port
+ Serial.begin(9600);
+
+ // init the Wire object (for I2C)
+ Wire.begin();
+
+ // wait for slave to finish any init sequence
+ delay(2000);
+}
+
+void loop()
+{
+ uint8_t i;
+ uint8_t req_rtn; // num bytes returned by requestFrom() call
+ uint8_t rand_byte_count;
+ uint8_t out_rand[16]; // data written from master
+ uint8_t in_rand[16]; // data read back from slave
+
+ bool mismatch;
+
+ // count total number of request
+ count++;
+
+ // compute random number of bytes for this pass
+ rand_byte_count = random(16) + 1;
+
+ // force the first three requests to be small so that the tx buffer doesn't overflow
+ // instantly and the user can see at least one successful transaction and some
+ // mismtaches before the usiTwiSlave.c library hangs on the line "while ( !txCount );".
+ if (count <= 3) rand_byte_count = 2;
+
+ // generate, save, and send N random byte values
+ Wire.beginTransmission(I2C_SLAVE_ADDR);
+ for (i = 0; i < rand_byte_count; i++)
+ Wire.write(out_rand[i] = random(256));
+ Wire.endTransmission();
+
+ // delay 20 milliseconds to accomodate slave onReceive() callback
+ // function. The actual time that slave takes is application dependent, but
+ // just storing the master's transmitted data does not take
+ // anywhere near 20ms.
+ delay(20);
+
+ // read N bytes from slave
+ req_rtn = Wire.requestFrom(I2C_SLAVE_ADDR, (int)rand_byte_count); // Request N bytes from slave
+ for (i = 0; i < req_rtn; i++)
+ in_rand[i] = Wire.read();
+
+ // compare in/out data values
+ mismatch = false;
+ for (i = 0; i < rand_byte_count; i++)
+ mismatch = mismatch || (out_rand[i] != in_rand[i]);
+
+ // increment the error counter if the number of byte variables don't match or
+ // if the data itself doesn't match
+ if (mismatch || (rand_byte_count != req_rtn))
+ {
+ error_count++;
+ }
+
+ // The rest of the program just displays the results to the serial port
+
+ // display total requests so far and error count so far
+ snprintf(c_buf, sizeof(c_buf), "req: %3d,err: %3d", count, error_count);
+ Serial.println(c_buf);
+
+ // display the random byte count, the number of bytes read back, and "MATCH"/"MISMATCH"
+ snprintf(c_buf, sizeof(c_buf), "size: %2d/%2d,%s", rand_byte_count, req_rtn, rand_byte_count != req_rtn?"MISMATCH <<--- !!!":"MATCH");
+ Serial.println(c_buf);
+
+ // display whether the data compare matched or mismatched
+ snprintf(c_buf, sizeof(c_buf), "data: %s", mismatch?"MISMATCH <<--- !!!":"MATCH");
+ Serial.println(c_buf);
+
+ // send up to three tx/rx bytes so that random data can be
+ // visually verified
+ if (rand_byte_count >= 1)
+ {
+ snprintf(c_buf, sizeof(c_buf), "rand[0]: %02x/%02x", out_rand[0], in_rand[0]);
+ Serial.println(c_buf);
+ }
+
+ if (rand_byte_count >= 2)
+ {
+ snprintf(c_buf, sizeof(c_buf), "rand[1]: %02x/%02x", out_rand[1], in_rand[1]);
+ Serial.println(c_buf);
+ }
+
+ if (rand_byte_count >= 3)
+ {
+ snprintf(c_buf, sizeof(c_buf), "rand[2]: %02x/%02x", out_rand[2], in_rand[2]);
+ Serial.println(c_buf);
+ }
+
+ // delay 1 second so user can watch results
+ delay(1000);
+}
diff --git a/digital-driver/firmware/Test Sketchs/Slave_Random_LED_I2C/Slave_Random_LED_I2C.ino b/digital-driver/firmware/Test Sketchs/Slave_Random_LED_I2C/Slave_Random_LED_I2C.ino
new file mode 100644
index 0000000..ef9df86
--- /dev/null
+++ b/digital-driver/firmware/Test Sketchs/Slave_Random_LED_I2C/Slave_Random_LED_I2C.ino
@@ -0,0 +1,122 @@
+////////////////////////////////////////////////////////////////////////////////////
+// I2C test program for Digital Photoreactor Controller using TinyWireS library //
+// Run this slave program on the AtTiny85. //
+////////////////////////////////////////////////////////////////////////////////////
+// This test program is adapted from the TinyWireS stress test program //
+// developed by Scott Hartog: https://github.com/rambo/TinyWire //
+// //
+// The slave program receives via I2C N bytes of random data in a single //
+// receiveEvent() callback and stores that data in a global buffer. //
+// It then responds the first requestEvent() callback with the same data. //
+// The requestEvent() callback overwrites the data buffer with zeros after //
+// responding so it will only respond correctly to the first requestEvent() //
+// callback after each receiveEvent() callback. Subsequent requestEvent() //
+// will respond with 0xff for all data bytes. //
+// //
+// //
+// SETUP: //
+// AtTiny85 Pin 2 = PB3 = Blink LED //
+// Attiny85 Pin 3 (PB4) = LED PWM //
+// AtTiny85 Pin 5 (PB0/SDA) = I2C SDA //
+// connect to SDA on master with external pull-up (~4.7K) //
+// AtTinyPin 6 (PB1) = Fan PWM //
+// AtTiny Pin 7 (PB0/SCL) = I2C SCL //
+// connect to SCL on master with external pull-up (~4.7K) //
+// AtTiny Pin 1 (PB5/!RST) //
+// connect to reset on master (or just pull-up) //
+// //
+////////////////////////////////////////////////////////////////////////////////////
+
+#include "TinyWireS.h" // wrapper class for I2C slave routines
+
+#define I2C_SLAVE_ADDR 0x26 // I2C slave address (38, 0x26),
+
+uint8_t master_data[16]; // global buffer to store data sent from the master.
+uint8_t master_bytes; // global variable to number of bytes sent from the master.
+
+const int LEDPin = 4; //Arduino pin 4, pin 3 on AtTiny85 pinout
+const int FanPin = 1; //Arduino pin 1, pin 6 on AtTiny85 pinout
+const int BlinkPin = 3; //Arduino pin 3, pin 2 on AtTiny85 pinout
+
+// Gets called when the ATtiny85 receives an I2C write slave request
+void receiveEvent(uint8_t num_bytes)
+{
+ uint8_t i;
+
+ // save the number of bytes sent from the master
+ master_bytes = num_bytes;
+
+ // store the data from the master into the data buffer
+ for (i = 0; i < master_bytes; i++)
+ master_data[i] = TinyWireS.receive();
+
+ // set LED and Fan PWM duty to random byte values recieved from the master
+ analogWrite(FanPin, master_data[0]);
+ analogWrite(LEDPin, master_data[1]);
+
+ // blink LED whenever data is successfuly recieved
+ digitalWrite(BlinkPin, HIGH);
+ delay(10);
+ digitalWrite(BlinkPin, LOW);
+ delay(10);
+
+}
+
+// Gets called when the ATtiny receives an i2c read slave request
+void requestEvent()
+{
+ uint8_t i;
+
+ // send the data buffer back to the master
+ for (i = 0; i < master_bytes; i++)
+ TinyWireS.send(master_data[i]);
+
+ // corrupt the byte values in the data buffer
+ // so that subsequent call won't match
+ for (i = 0; i < master_bytes; i++)
+ master_data[i] += 0x5a;
+
+ // corrupt length of the request, but dont' make it zero
+
+ // if the usiTwiSlave.c is working fine, then this number is completely irrelevant
+ // because the requestEvent() callback will not be called again until
+ // after the next receiveEvent() callback, so the master_data and
+ // master_bytes variables will be set by that call.
+
+ // If the usiTwiSlave.c has the issue of calling the requestFrom() callback
+ // for each byte sent, the buffer will accumulate by this amount *for each byte
+ // in the original request*.
+ //
+ // Making it zero will obscure the 1-byte send issue in the usiTwiSlave.c
+ // that is being tested.
+ // Making it small will allow a few requests to succeed before the tx buffer
+ // overflows and the usiTwiSlave.c hangs on the "while ( tmphead == txTail );"
+ // line
+ master_bytes = 2;
+}
+
+void setup()
+{
+ // initialize the TinyWireS and usiTwiSlave libraries
+ TinyWireS.begin(I2C_SLAVE_ADDR); // init I2C Slave mode
+
+ // register the onReceive() callback function
+ TinyWireS.onReceive(receiveEvent);
+
+ // register the onRequest() callback function
+ TinyWireS.onRequest(requestEvent);
+
+ pinMode(LEDPin, OUTPUT); // set pin for LED PWM
+ pinMode(FanPin, OUTPUT); // set pin for Fan PWM
+ pinMode(BlinkPin, OUTPUT); // set pin to blink LED
+
+ TCCR0B = TCCR0B & 0b11111000 | 0b001; // sets internal timer of AtTiny85 to 31250 Hz for fast PWM for controlling fan speed
+}
+
+void loop()
+{
+ // this needs to be here
+ /////////////Does this really need to be here?????
+ //TinyWireS_stop_check();
+ // otherwise empty loop
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 12:59:19 +0000