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offsetLock.pde
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offsetLock.pde
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//Running on chipKit uc32 !!!!
#define LED 43
#define CE_COOLER 10
#define CE_REPUMPER 9
#define TRIG_COOLER 8
#define TRIG_REPUMPER 7
#define LE_COOLER 6
#define LE_REPUMPER 5
#define SERIAL_COMMUNICATION 4
#define BUFFER_LEN 100 //Length of communication buffer
#include <SPI_simple.h>
#include <ADF4110.h>
#include <ADF41020.h>
float floatMap(float x, float in_min, float in_max, float out_min, float out_max)
{
if(in_max==in_min){
return out_max;
}
else{
return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}
}
//SPI:
uint32_t BRG=1;//20 MHz SCLK (slowest timestep in datasheet is t3+t4=50ns->the fastest SCLK is 20MHz )
uint32_t MODE=2; //32 bit
uint32_t SMP=0; //Input data sampled at middle of data output time
uint32_t CKE=1; //Serial output data changes on transition from active clock state to Idle clock state
uint32_t CKP=0; // Idle state for clock is a low level; active state is a high level
//Triggers:
uint32_t TrigFlagCooler=0; //Rising edge detected
uint32_t TrigFlagRepumper=0;
uint32_t TriggerStateCooler=0; //State of digital pin
uint32_t TriggerStateRepumper=0;
uint32_t TriggerStateOldCooler=0;
uint32_t TriggerStateOldRepumper=0;
//Communication:
char newSerialChar;
String serialBuffer="";
bool serialFlagCooler=0; //Is 1 for serial communication concerning the cooler and 0 otherwise.
float freqArrayCooler[BUFFER_LEN];
float sweepTimeArrayCooler[BUFFER_LEN];
int indexCooler=0; //Current position in freq array
int freqStepsCooler=0; //Total available freq steps
bool serialFlagRepumper=0; //Is 1 for serial communication concerning the repumper and 0 otherwise.
float freqArrayRepumper[BUFFER_LEN];
float sweepTimeArrayRepumper[BUFFER_LEN];
int indexRepumper=0;
int freqStepsRepumper=0;
//time stamps for sweeps
uint32_t startTime;
uint32_t currentTime;
uint32_t endTime;
float startFrequency;
float currentFrequency;
float endFrequency;
uint32_t delay_us=8; // Added so each time setp is 20 us
void setup() {
pinMode(LED, OUTPUT);
pinMode(CE_COOLER, OUTPUT);
pinMode(CE_REPUMPER, OUTPUT);
pinMode(TRIG_COOLER, INPUT);
pinMode(TRIG_REPUMPER, INPUT);
pinMode(LE_COOLER, OUTPUT);
pinMode(LE_REPUMPER, OUTPUT);
pinMode(SERIAL_COMMUNICATION, INPUT);
//Setting LE to LOW
digitalWrite(LE_COOLER,LOW);
digitalWrite(LE_REPUMPER,LOW);
//Start serial:
Serial.begin(9600);
Serial.print("DIGITAL OFFSET LOCK \n");
Serial.print("Version "__DATE__ " " __TIME__"\n\n");
//Start SPI:
SPI_simple.begin(BRG, MODE, SMP, CKE, CKP);
//Set default values of latches into ADF4110 and ADF41020 classes:
ADF4110.begin();
ADF41020.begin();
//Initializing ADF4110 device:
digitalWrite(LE_COOLER,LOW);
SPI_simple.transfer(ADF4110.initialization_latch.value());
digitalWrite(LE_COOLER,HIGH);
delay(1);
digitalWrite(LE_COOLER,LOW);
SPI_simple.transfer(ADF4110.reference_counter_latch.value());
digitalWrite(LE_COOLER,HIGH);
delay(1);
digitalWrite(LE_COOLER,LOW);
SPI_simple.transfer(ADF4110.N_counter_latch.value());
digitalWrite(LE_COOLER,HIGH);
delay(1);
//digitalWrite(LE_COOLER,LOW);
Serial.write("ADF4100 INITIALIZATION LATCH \n");
Serial.println(ADF4110.initialization_latch.value(),HEX);
Serial.write("ADF4100 REFERENCE COUNTER LATCH \n");
Serial.println(ADF4110.reference_counter_latch.value(),HEX);
Serial.write("ADF4100 N COUNTER LATCH \n");
Serial.println(ADF4110.N_counter_latch.value(),HEX);
//Initializing ADF41020 device:
digitalWrite(LE_REPUMPER,LOW);
SPI_simple.transfer(ADF41020.function_latch.value());
digitalWrite(LE_REPUMPER,HIGH);
delay(1);
digitalWrite(LE_REPUMPER,LOW);
SPI_simple.transfer(ADF41020.reference_counter_latch.value());
digitalWrite(LE_REPUMPER,HIGH);
delay(1);
digitalWrite(LE_REPUMPER,LOW);
SPI_simple.transfer(ADF41020.N_counter_latch.value());
digitalWrite(LE_REPUMPER,HIGH);
delay(1);
//digitalWrite(LE_REPUMPER,LOW);
Serial.write("ADF41020 FUNCTION LATCH \n");
Serial.println(ADF41020.function_latch.value(),HEX);
Serial.write("ADF41020 REFERENCE COUNTER LATCH \n");
Serial.println(ADF41020.reference_counter_latch.value(),HEX);
Serial.write("ADF41020 N COUNTER LATCH \n");
Serial.println(ADF41020.N_counter_latch.value(),HEX);
}
void loop() {
TriggerStateCooler=digitalRead(TRIG_COOLER);
TrigFlagCooler=(!TriggerStateOldCooler)&TriggerStateCooler;
TriggerStateOldCooler=TriggerStateCooler;
TriggerStateRepumper=digitalRead(TRIG_REPUMPER);
TrigFlagRepumper=(!TriggerStateOldRepumper)&TriggerStateRepumper;
TriggerStateOldRepumper=TriggerStateRepumper;
digitalWrite(LED,freqStepsCooler|freqStepsRepumper);
//Communication:
if (Serial.available() > 0){
newSerialChar=Serial.read();
if (newSerialChar=='!'){
serialBuffer="";
freqStepsCooler=0;
indexCooler=0;
freqStepsRepumper=0;
indexRepumper=0;
serialFlagCooler=0;
serialFlagRepumper=0;
for(int i=0; i<BUFFER_LEN;i++){
freqArrayCooler[i]=0;
sweepTimeArrayCooler[i]=0;
freqArrayRepumper[i]=0;
sweepTimeArrayRepumper[i]=0;
}
}
if (newSerialChar=='c'){
serialBuffer="";
serialFlagCooler=1;
serialFlagRepumper=0;
}
if (newSerialChar=='r'){
serialBuffer="";
serialFlagCooler=0;
serialFlagRepumper=1;
}
if (newSerialChar==';'){
if (serialFlagCooler==1){
sweepTimeArrayCooler[freqStepsCooler]=serialBuffer.substring(1).toFloat();
}
if (serialFlagRepumper==1){
sweepTimeArrayRepumper[freqStepsRepumper]=serialBuffer.substring(1).toFloat();
}
serialBuffer="";
}
if (newSerialChar=='#'){
if (serialFlagCooler==1){
freqArrayCooler[freqStepsCooler]=serialBuffer.substring(1).toFloat();
freqStepsCooler++;
}
if (serialFlagRepumper==1){
freqArrayRepumper[freqStepsRepumper]=serialBuffer.substring(1).toFloat();
freqStepsRepumper++;
}
serialBuffer="";
serialFlagCooler=0;
serialFlagRepumper=0;
}
if (newSerialChar=='?'){
Serial.print("COOLER freq:\n");
for (int i; i<freqStepsCooler; i++){
Serial.println(freqArrayCooler[i]);
}
Serial.print("COOLER sweep time:\n");
for (int i; i<freqStepsCooler; i++){
Serial.println(sweepTimeArrayCooler[i]);
}
Serial.print("REPUMPER freq:\n");
for (int i; i<freqStepsRepumper; i++){
Serial.println(freqArrayRepumper[i]);
}
Serial.print("REPUMPER sweep time:\n");
for (int i; i<freqStepsRepumper; i++){
Serial.println(sweepTimeArrayRepumper[i]);
}
serialFlagCooler=0;
serialFlagRepumper=0;
}
if ((serialFlagCooler==1)||(serialFlagRepumper==1)){
serialBuffer+=newSerialChar;
}
}
//Trigger cooler
if((TrigFlagCooler==1)&&(freqStepsCooler>0)){
startFrequency=ADF4110.freq;
endFrequency=freqArrayCooler[indexCooler];
startTime=micros();
endTime=startTime+((uint32_t) (sweepTimeArrayCooler[indexCooler]*1000));
while(true){
currentTime=micros();
currentTime=constrain(currentTime,startTime,endTime);
currentFrequency=floatMap(currentTime,startTime,endTime,startFrequency,endFrequency);
ADF4110.setLatches(currentFrequency);
digitalWrite(LE_COOLER,LOW);
SPI_simple.transfer(ADF4110.function_latch.value());
digitalWrite(LE_COOLER,HIGH);
delayMicroseconds(delay_us);
digitalWrite(LE_COOLER,LOW);
SPI_simple.transfer(ADF4110.N_counter_latch.value());
digitalWrite(LE_COOLER,HIGH);
delayMicroseconds(delay_us);
if (currentTime==endTime){
break;
}
}
indexCooler++;
if (indexCooler==freqStepsCooler){
indexCooler=0;
freqStepsCooler=0;
}
}
//Trigger repumper:
if((TrigFlagRepumper==1)&&(freqStepsRepumper>0)){
startFrequency=ADF41020.freq;
endFrequency=freqArrayRepumper[indexRepumper];
startTime=micros();
endTime=startTime+((uint32_t) (sweepTimeArrayRepumper[indexRepumper]*1000));
while(true){
currentTime=micros();
currentTime=constrain(currentTime,startTime,endTime);
currentFrequency=floatMap(currentTime,startTime,endTime,startFrequency,endFrequency);
ADF41020.setLatches(currentFrequency);
digitalWrite(LE_REPUMPER,LOW);
SPI_simple.transfer(ADF41020.function_latch.value());
digitalWrite(LE_REPUMPER,HIGH);
delayMicroseconds(delay_us);
digitalWrite(LE_REPUMPER,LOW);
SPI_simple.transfer(ADF41020.N_counter_latch.value());
digitalWrite(LE_REPUMPER,HIGH);
delayMicroseconds(delay_us);
if (currentTime==endTime){
break;
}
}
indexRepumper++;
if (indexRepumper==freqStepsRepumper){
indexRepumper=0;
freqStepsRepumper=0;
}
}
}