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