// Pass through pulses until the amount seen exceeds a user-set number.
// Number of pulses to pass through is specified by the product of two values each of which can be 65k (so total can be ~2^32)
// Initialize via serial command (including running this script, or setting cell address 1 from 0 to 64 (low to high))

// variables to be edited by user
int numPulsesInner = 3;     // number of pulses to send, up to 2^16-1
int numPulsesOuter = 7;     // number of pulses to send, up to 2^16-1
int addrPulseIn = 33;        // address 33 is BNC#1 on PLC front panel
int addrPulseOut = 40;       // address 40 is BNC#8 on PLC front panel

// variables that should not need to be edited by user
// would like to define these variables as final, but this is
//  not amenable to script which can run multiple times
String plcName = "PLogic:E:36";
String propPosition = "PointerPosition";
String propCellType = "EditCellCellType";
String propCellConfig = "EditCellConfig";
String propCellInput1 = "EditCellInput1";
String propCellInput2 = "EditCellInput2";
String propCellInput3 = "EditCellInput3";
String propUpdates = "EditCellUpdateAutomatically";
String valNo = "No";
String valConstant = "0 - constant";
String valDFlop = "1 - D flop";
String valAND2 = "5 - 2-input AND";
String valOneShotNRT = "14 - one shot (NRT)";
String valIOInput = "0 - input";
String valIOPushPull = "2 - output (push-pull)";
int addrZero = 0;
int addrHigh = 64;
int addrInvert = 64;
int addrEdge = 128;
// evaluation order of these is important
int addrInitialize = 1;
int addrInnerCount = 2;
int addrOuterCount = 3;
int addrLatchFlop = 4;
int addrDelayFlop = 5;
int addrOutputAnd = 6;
 

// turn off updates to speed communication
String valUpdatesOriginal = mmc.getProperty(plcName, propUpdates);
mmc.setProperty(plcName, propUpdates, valNo);

// first one-shot to track how many pulses we have remaining in this round
// clock is from external pulse but trigger is via serial on cell 1
mmc.setProperty(plcName, propPosition, addrInnerCount);
mmc.setProperty(plcName, propCellType, valOneShotNRT);
mmc.setProperty(plcName, propCellConfig, numPulsesInner - 1);
mmc.setProperty(plcName, propCellInput1, addrEdge + addrPulseIn);
mmc.setProperty(plcName, propCellInput2, addrEdge + addrPulseIn);
mmc.setProperty(plcName, propCellInput3, addrInitialize);
 
// second one-shot to track how many rounds we have remaining
// clock is from first one-shot but trigger is via serial on cell 1
mmc.setProperty(plcName, propPosition, addrOuterCount);
mmc.setProperty(plcName, propCellType, valOneShotNRT);
mmc.setProperty(plcName, propCellConfig, numPulsesOuter - 1);
mmc.setProperty(plcName, propCellInput1, addrEdge + addrInvert + addrInnerCount);
mmc.setProperty(plcName, propCellInput2, addrEdge + addrInvert + addrInnerCount);
mmc.setProperty(plcName, propCellInput3, addrInitialize);

// D-flop registers when final count has been reached
mmc.setProperty(plcName, propPosition, addrLatchFlop);
mmc.setProperty(plcName, propCellType, valDFlop);
mmc.setProperty(plcName, propCellInput1, addrHigh);  // connect D input to logic 1
mmc.setProperty(plcName, propCellInput2, addrEdge + addrInvert + addrOuterCount);  
mmc.setProperty(plcName, propCellInput3, addrInitialize);  // reset

// D-flop delay to wait for the final pulse to go through
mmc.setProperty(plcName, propPosition, addrDelayFlop);
mmc.setProperty(plcName, propCellType, valDFlop);
mmc.setProperty(plcName, propCellInput1, addrLatchFlop);  // connect D input to latch flop
mmc.setProperty(plcName, propCellInput2, addrEdge + addrInvert + addrPulseIn);    // clock on falling edge of pulse signal
mmc.setProperty(plcName, propCellInput3, addrInitialize);  // reset

// AND gate to pass through pulse to output if the count hasn't been exceeded
mmc.setProperty(plcName, propPosition, addrOutputAnd);
mmc.setProperty(plcName, propCellType, valAND2);
mmc.setProperty(plcName, propCellInput1, addrPulseIn);
mmc.setProperty(plcName, propCellInput2, addrDelayFlop + addrInvert);
 
// connect output pulse to BNC output (and ensure it is an output)
mmc.setProperty(plcName, propPosition, addrPulseOut);
mmc.setProperty(plcName, propCellType, valIOPushPull);
mmc.setProperty(plcName, propCellConfig, addrOutputAnd);

// ensure that the BNC input is set as such
mmc.setProperty(plcName, propPosition, addrPulseIn);
mmc.setProperty(plcName, propCellType, valIOInput);

// initialize the one-shot counters by doing the initial trigger
mmc.setProperty(plcName, propPosition, addrInitialize);
mmc.setProperty(plcName, propCellType, valConstant);
mmc.setProperty(plcName, propCellConfig, addrZero);
mmc.setProperty(plcName, propCellConfig, addrHigh);
mmc.setProperty(plcName, propCellConfig, addrZero);

// restore updates
mmc.setProperty(plcName, propUpdates, valUpdatesOriginal);