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/OpenCoresLib/simple_customized_counter/CounterLib.psC
0,0 → 1,175
// ===================================================================
// This is a library of counters
// ===================================================================
// Each counter supports:
// - Resetting
// - Counting up
// - Counting down
// - Loading a value from the input iLoadValue
//
// The code is straightforward, so you can easily create your own counter
// by changing the counter type or the operations. In fact you can
// create any functions like a shift register or even an
// ALU (Arithmetic and Logic Unit) or a calculator.
//
// The output always generates an event.
// If you don't want the event, remove the colon ':' in the value assignment.
// Ex: change oValue := 0; to oValue = 0;
//
// ===================================================================
// There are four counters in the library.
//
// The first two executes the operation on input events:
// - CCounterEvent: operations depends on inputs: iReset, iUp, iDown, iLoad
// - CCounterOprEvent: operations depends on a single input: iOpr
//
// The last two executes the operation at each step i.e. FPGA clock:
// - CCounterLevel: operations depends on inputs: iReset, iUp, iDown, iLoad
// - CCounterOprLevel: operations depends on a single input: iOpr
//
// ===================================================================
// TEST BENCHES:
//
// - CCounterEvent: Manual test with control panel
// Project in "TestCounterEvent" folder
//
// - CCounterOprEvent: Simulated DE1SoC board, you need the BSP
// Real DE1SoC board, you need the real board
// Project in "TestCounterOprEventBoard" folder
// Performed by a C++ program
// Project in "TestCounterOprEventAPI" folder
// << This project requires a paid license >>
//
// - CCounterLevel: Using signal editor and viewer
// Project in "TestCounterLevel" folder
//
// - CCounterOprLevel: Using signal editor and viewer
// Project in "TestCounterOprLevel" folder
// ===================================================================
 
library CounterLib
{
// -------------------------------------------------------------------
// This counter executes the operation on input events
// There is a priority assigned to each function, in parenthesis
// 0 indicates highest priority
// and priority decreases with increasing value
// -------------------------------------------------------------------
component CCounterEvent (in active bit iReset,
in active bit iUp,
in active bit iDown,
in active bit iLoad,
in passive ubyte iLoadValue,
out active ubyte oValue)
{
DoReset(0) on iReset
{
oValue := 0ub;
}
 
CountUp(1) on iUp
{
oValue:++;
}
 
CountDown(2) on iDown
{
oValue:--;
}
 
LoadValue(3) on iLoad
{
oValue := iLoadValue;
}
};
// -------------------------------------------------------------------
// This counter executes the operation at each step or FPGA clock cycle
// The priority is implemented with if and else instructions
// -------------------------------------------------------------------
component CCounterLevel (in passive bit iReset,
in passive bit iUp,
in passive bit iDown,
in passive bit iLoad,
in passive ubyte iLoadValue,
out active ubyte oValue)
{
always()
{
if(iReset)
{
oValue := 0ub;
}
 
else if(iUp)
{
oValue:++;
}
 
else if(iDown)
{
oValue:--;
}
 
else if(iLoad)
{
oValue := iLoadValue;
}
}
};
 
// -------------------------------------------------------------------
// Define type and constants for the counter operation
// -------------------------------------------------------------------
enum Opr_t { cOprNone, cOprReset, cOprUp, cOprDown, cOprLoad };
 
// -------------------------------------------------------------------
// This counter executes the operation on input events.
// The input iOpr has the type Opr_t and determines the operation.
// There is no priority on the operation.
// -------------------------------------------------------------------
// The switch statement has no break, only one case is executed
// -------------------------------------------------------------------
component CCounterOprEvent (in active Opr_t iOpr,
in passive ubyte iLoadValue,
out active ubyte oValue)
{
ExecuteOpr(0) on iOpr
{
// The switch statement has no break, only one case is executed
switch(iOpr)
{
case cOprReset: oValue:= 0ub;
case cOprUp: oValue:++;
case cOprDown: oValue:--;
case cOprLoad: oValue := iLoadValue;
}
}
};
// -------------------------------------------------------------------
// This counter executes the operation at each step or FPGA clock cycle
// The input iOpr has the type Opr_t and determines the operation
// There is no priority on the operations
// -------------------------------------------------------------------
component CCounterOprLevel (in active Opr_t iOpr,
in passive ubyte iLoadValue,
out active ubyte oValue)
{
always()
{
// Send the event
oValue:;
 
// Assign the value
// The switch instruction returns a value
oValue = switch(iOpr)
{
case cOprReset: 0ub;
case cOprUp: oValue + 1ub;
case cOprDown: oValue - 1ub;
case cOprLoad: iLoadValue;
};
}
};
};
/OpenCoresLib/simple_customized_counter/lib_CCounterEvent.vmc Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream
/OpenCoresLib/simple_customized_counter/lib_CCounterEvent.vmc
OpenCoresLib/simple_customized_counter/lib_CCounterEvent.vmc Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: OpenCoresLib/simple_customized_counter/lib_CCounterLevel.vmc =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: OpenCoresLib/simple_customized_counter/lib_CCounterLevel.vmc =================================================================== --- OpenCoresLib/simple_customized_counter/lib_CCounterLevel.vmc (nonexistent) +++ OpenCoresLib/simple_customized_counter/lib_CCounterLevel.vmc (revision 50)
OpenCoresLib/simple_customized_counter/lib_CCounterLevel.vmc Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: OpenCoresLib/simple_customized_counter/lib_CCounterOprEvent.vmc =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: OpenCoresLib/simple_customized_counter/lib_CCounterOprEvent.vmc =================================================================== --- OpenCoresLib/simple_customized_counter/lib_CCounterOprEvent.vmc (nonexistent) +++ OpenCoresLib/simple_customized_counter/lib_CCounterOprEvent.vmc (revision 50)
OpenCoresLib/simple_customized_counter/lib_CCounterOprEvent.vmc Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property Index: OpenCoresLib/simple_customized_counter/lib_CCounterOprLevel.vmc =================================================================== Cannot display: file marked as a binary type. svn:mime-type = application/octet-stream Index: OpenCoresLib/simple_customized_counter/lib_CCounterOprLevel.vmc =================================================================== --- OpenCoresLib/simple_customized_counter/lib_CCounterOprLevel.vmc (nonexistent) +++ OpenCoresLib/simple_customized_counter/lib_CCounterOprLevel.vmc (revision 50)
OpenCoresLib/simple_customized_counter/lib_CCounterOprLevel.vmc Property changes : Added: svn:mime-type ## -0,0 +1 ## +application/octet-stream \ No newline at end of property

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