detectorxcal

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+//drive the dac channels
+
+/*
+  Crude code to get the Cosmic Pi up and running, spits out events (coincidence on both channels, after setting the HV to about 28V
+  and the DAC to 22F (whatever that is).
+  Makes the light blink (it's not very bright) and prints the event number.
+  Rate on the test unit seems reasonable, we'll test this against a proper setup over the next few weeks
+  To be re-written using interrupts for production code.
+  */
+
+// the setup function runs once when you press reset or power the board
+byte smallpart;
+byte bigpart;
+int x = 0; //cosmic counter
+
+#include <Wire.h>
+  int HVVal = 0xFE;
+void setup() {
+  // initialize digital pin LED_BUILTIN as an output.
+  pinMode(PA6, OUTPUT);
+ pinMode(PA4, OUTPUT); 
+ pinMode(PA5, OUTPUT);
+  Serial.begin(9600);
+
+//config SPI pins
+  pinMode(PC7, OUTPUT);
+  pinMode(PC8, OUTPUT);
+  pinMode(PC3, OUTPUT);    
+  pinMode(PB13, OUTPUT);
+
+    //set input pins
+  pinMode(PC12, INPUT);
+  pinMode(PC11, INPUT);
+  pinMode(PB10, INPUT);
+
+
+  
+  digitalWrite(PC7, LOW);
+  setHV(0xAD);
+  digitalWrite(PC7, HIGH);
+
+  digitalWrite(PC8, LOW);
+  setHV(0xAD);
+  digitalWrite(PC8, HIGH);
+  HVVal= HVVal+10; 
+
+  Wire.setSDA(PB7);
+  Wire.setSCL(PB8);
+  Wire.begin();
+smallpart = 0x2F; //the lsb part
+bigpart = 0x02; // the msb part of the dac value
+
+  Serial.write("Hello ");
+//  Serial.write(HVVal);
+
+  //digitalWrite(PA5, HIGH);   // turn the LED on (HIGH is the voltage level)
+  delay(1000);                       // wait for a second
+  digitalWrite(PA5, LOW);    // turn the LED off by making the voltage LOW
+  //delay(10000);   
+
+int address = 0x60;
+
+
+  Wire.beginTransmission(address);
+   Wire.write(B00001000);              // sends five bytes
+  Wire.write(bigpart);                    // sends one byte
+  Wire.write(smallpart);
+  Wire.endTransmission();
+
+  Wire.beginTransmission(address);
+   Wire.write(B00000000);              // sends five bytes
+  Wire.write(bigpart);                    // sends one byte
+  Wire.write(smallpart);
+  Wire.endTransmission();
+
+
+  Serial.write("transmitted ");
+
+  Serial.write(" looping ");
+
+}
+
+// the loop function runs over and over again forever
+
+void loop() {
+
+
+  //debounce loop
+  if (digitalRead(PB10) == 0) {
+    //Serial.write("0");
+  if (digitalRead(PB10) == 1) {
+    //low to high print x
+    //Serial.write("x");
+    Serial.println(x);
+    x++;
+    digitalWrite(PA5, HIGH);
+    delay(200);
+    digitalWrite(PA5, LOW);
+    }
+  }
+
+  /*if PC11 == LOW {
+    Serial.write("1");
+    
+  if PC11 == HIGH {
+    //low to high print x
+    Serial.write("y");
+    }
+  }
+  */
+//smallpart--;
+}
+
+// set the two HV supplies
+byte setHV(byte _send)  // This function is what bitbangs the data
+{
+    for(int i=0; i<8; i++)  // There are 8 bits in a byte
+    {
+      digitalWrite(PC3, bitRead(_send, 7-i));    // Set MOSI
+      //delay(1);
+      digitalWrite(PB13, HIGH);                  // SCK high
+      //bitWrite(_receive, i, digitalRead(MISO_pin)); // Capture MISO
+      digitalWrite(PB13, LOW);                   // SCK low
+    //digitalWrite(MOSI_pin, LOW);    // Set MOSI
+      
+    }
+     //digitalWrite(SS_pin[j], HIGH);       // SS high again 
+  }
+  //return _receive;        // Return the received data