From 8f9157f4242aa9a1b61134ede0a762724263ff92 Mon Sep 17 00:00:00 2001
From: James Devine <devine.jd@gmail.com>
Date: Sat, 31 Dec 2016 01:16:21 +0100
Subject: [PATCH]

---
 CosmicScanner | 132 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 CosmicScanner

diff --git a/CosmicScanner b/CosmicScanner
new file mode 100644
index 0000000..170802a
--- /dev/null
+++ b/CosmicScanner
@@ -0,0 +1,132 @@
+//Cosmic Pi histogram program
+//this compiles histograms from the ADC for different HV Bias levels
+//it is used to profile the detection of muons and noise
+
+unsigned long start_time;
+unsigned long stop_time;
+unsigned int values[2000];
+unsigned long histograma[4096];
+unsigned long histogramb[4096];
+const int SS_pin = 42; //tbc
+const int SCK_pin = 44;
+const int MISO_pin = 22;
+const int MOSI_pin = 43;
+
+String intextbuf;
+String extextbuf;
+byte sendValue = 0xFF;   // Value we are going to send
+byte returnValue = 0;  // Where we will store the value sent by the slave
+int cyclecounter = 0;
+int hvset = 0;
+
+void setup() {
+
+  digitalWrite(SS, HIGH);  // Start with SS high
+  pinMode(SS_pin, OUTPUT);
+  pinMode(SCK_pin, OUTPUT);
+  pinMode(MISO_pin, INPUT); //this is the avalanche pin, not implemented yet
+  pinMode(MOSI_pin, OUTPUT);
+
+  Serial.begin(115200);
+
+  REG_ADC_MR = 0x10380080;  // Free run as fast as you can
+  REG_ADC_CHER = 3;   // Channels 0 and 1
+  REG_ADC_CR = 2;     // Start
+  Serial.print("Alive");
+  sendValue = 0x60;
+  Serial.println("Histogram for channels A and B, voltage scan");
+  Serial.println("1000 samples per round");
+  Serial.println("100,000 sets of samples");
+  Serial.println("100,000,000 samples per output");
+  returnValue = bitBang(sendValue); // Transmit data
+  for (int i = 0; i < 4096; i++) {
+    histograma[i] = 0;
+    histogramb[i] = 0;
+  }
+
+  Serial.print("hvset");
+  Serial.print("; ");
+  Serial.print("sample");
+  Serial.print("; ");
+  Serial.print("channel a");
+  Serial.print("; ");
+  Serial.println("channel b");
+
+
+}
+
+void loop() {
+  //reads in on channel 0
+
+  for (hvset = 0x70; hvset > 0x50; hvset--) {
+    returnValue = bitBang(hvset); // Transmit data
+
+    for (int j = 0; j < 100000; j++) {
+
+      for (int i = 0; i < 1000; i++) {
+        while ((ADC->ADC_ISR & 0x01) == 0);; // wait for conversion
+        values[i] = ADC->ADC_CDR[0]; //reads ch 0 only
+        while ((ADC->ADC_ISR & 0x02) == 0);
+        values[i + 1000] = ADC->ADC_CDR[1]; //get values
+      }
+
+      for (int i = 0; i < 1000; i++) {
+
+        //Serial.println(i);
+        //Serial.print(values[i]);
+        histograma[int(values[i])]++;
+        //Serial.print(" ");
+        //Serial.println(values[i+1000]);
+        histogramb[int(values[i + 1000])]++;
+      }
+    }
+    for (int i = 0; i < 4096; i++) {
+
+      Serial.print(hvset);
+      Serial.print("; ");
+      Serial.print(i);
+      Serial.print("; ");
+      Serial.print(histograma[i]);
+      Serial.print("; ");
+      Serial.println(histogramb[i]);
+    }
+    for (int i = 0; i < 4096; i++) {
+      histograma[i] = 0;
+      histogramb[i] = 0;
+    }
+    //Serial.println(cyclecounter);
+
+    //  delay(2000);
+    //  cyclecounter++;
+    //  for(int i=0;i<4096;i++) {
+    //  Serial.print(i);
+    //  Serial.print(" ");
+    //  Serial.print(histograma[i]);
+    //  Serial.print(" ");
+    //  Serial.println(histogramb[i]);
+    //histogramb[i]=0;
+  }
+}
+
+
+
+byte bitBang(byte _send)  // This function is what bitbangs the data
+{
+
+  //reception isn't implemented in this version.
+  byte _receive = 0;
+  digitalWrite(SS_pin, LOW);        // SS low
+  for (int i = 0; i < 8; i++) // There are 8 bits in a byte
+  {
+    digitalWrite(MOSI_pin, bitRead(_send, 7 - i));  // Set MOSI
+    //delay(1);
+    digitalWrite(SCK_pin, HIGH);                  // SCK high
+    //bitWrite(_receive, i, digitalRead(MISO_pin)); // Capture MISO
+    digitalWrite(SCK_pin, LOW);                   // SCK low
+    //digitalWrite(MOSI_pin, LOW);    // Set MOSI
+
+  }
+  digitalWrite(SS_pin, HIGH);       // SS high again
+
+  //return _receive;        // Return the received data
+}
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