CSCTMBTrailer Class Reference

#include <CSCTMBTrailer.h>

Public Member Functions
bool	check () const
unsigned int	crc22 () const
	CSCTMBTrailer (int wordCount, int firmwareVersion)
	don't forget to pass in the size of the tmb header + clct data More...
	CSCTMBTrailer (unsigned short *buf, unsigned short int firmwareVersion)
	CSCTMBTrailer (const CSCTMBStatusDigi &digi)
unsigned short *	data ()
void	setCRC (int crc)
uint16_t	sizeInBytes () const
int	sizeInWords () const
	in 16-bit frames More...
int	wordCount () const

Static Public Member Functions
static void	selfTest ()

Private Member Functions
int	crcOffset () const
int	de0fOffset () const

Private Attributes
unsigned short	theData [7]
unsigned short int	theFirmwareVersion
int	thePadding

Detailed Description

Defined to begin at the 6E0C word 2006 format

6E0C 2AAA (optional) 5555 (optional) D8+CRC22(10) D8+CRC22(10) DE0F D8+WordCount D2007 format 6E0C 2AAA (optional) 5555 (optional) DE0F D8+CRC22(10) D8+CRC22(10) D8+WordCount

Definition at line 30 of file CSCTMBTrailer.h.

Constructor & Destructor Documentation

CSCTMBTrailer::CSCTMBTrailer	(	int	wordCount,
		int	firmwareVersion
	)

don't forget to pass in the size of the tmb header + clct data

Definition at line 6 of file CSCTMBTrailer.cc.

References de0fOffset(), i, theData, thePadding, and wordCount().

: theFirmwareVersion(firmwareVersion)
{
  //FIXME do firmware version
  theData[0] = 0x6e0c;
  // all the necessary lines from this thing first
  wordCount += 5;
  // see if we need thePadding to make a multiple of 4
  thePadding = 0;

  if(wordCount%4==2) 
    {
      theData[1] = 0x2AAA;
      theData[2] = 0x5555;
      thePadding = 2;
      wordCount += thePadding;
    }
  // the next four words start with 11011, or a D
  for(int i = 1; i < 5; ++i) 
    {
      theData[i+thePadding] = 0xD800;
    }
  theData[de0fOffset()] = 0xde0f;
  // word count excludes the trailer
  theData[4+thePadding] |= wordCount;
}

CSCTMBTrailer::CSCTMBTrailer	(	unsigned short *	buf,
		unsigned short int	firmwareVersion
	)

in 2007 format de0f line moved

Definition at line 34 of file CSCTMBTrailer.cc.

References theData, and thePadding.

: theFirmwareVersion(firmwareVersion)
{
  // take a little too much, maybe
  memcpy(theData, buf, 14);
  switch (firmwareVersion){
  case 2006:
    // if there's padding, there'll be a de0f in the 6th word.
    // If not, you'll be in CFEB-land, where they won't be de0f.
    thePadding = (theData[5] == 0xde0f ? 2 : 0);
    break;
  case 2007:
    // =VB= check for 1st word to be 0xDE0F, then check 3rd 
    // to handle freaky cases of double 0xDE0F signatures in trailer 
    thePadding = (theData[1] == 0xde0f ? 0 : (theData[3] == 0xde0f ? 2 : 0)); 
//    thePadding = (theData[3] == 0xde0f ? 2 : 0);
    break;
  default: 
    edm::LogError("CSCTMBTrailer|CSCRawToDigi")
      <<"failed to contruct: firmware version is bad/not defined!";
  }
}

CSCTMBTrailer::CSCTMBTrailer ( const CSCTMBStatusDigi &  digi )

inline

Definition at line 37 of file CSCTMBTrailer.h.

References sizeInBytes(), and CSCTMBStatusDigi::trailer().

    {
      memcpy(this, digi.trailer(), sizeInBytes());
    }

Member Function Documentation

bool CSCTMBTrailer::check ( ) const

inline

Definition at line 45 of file CSCTMBTrailer.h.

References theData.

{return theData[0]==0x6e0c;}

unsigned int CSCTMBTrailer::crc22

(

)

const

Definition at line 58 of file CSCTMBTrailer.cc.

References crcOffset(), and theData.

Referenced by CSCTMBData::getCRC(), and selfTest().

{  
  return (theData[crcOffset()] & 0x07ff) +
            ((theData[crcOffset()+1] & 0x07ff) << 11);
}

int CSCTMBTrailer::crcOffset ( ) const

inlineprivate

Definition at line 53 of file CSCTMBTrailer.h.

References theFirmwareVersion, and thePadding.

Referenced by crc22(), and setCRC().

{return (theFirmwareVersion == 2006 ? 1 : 2) + thePadding;}

unsigned short* CSCTMBTrailer::data ( )

inline

Definition at line 48 of file CSCTMBTrailer.h.

References theData.

{return theData;}

int CSCTMBTrailer::de0fOffset ( ) const

inlineprivate

Definition at line 54 of file CSCTMBTrailer.h.

References theFirmwareVersion, and thePadding.

Referenced by CSCTMBTrailer().

{return (theFirmwareVersion == 2006 ? 3 : 1) + thePadding;}

void CSCTMBTrailer::selfTest ( )

static

Definition at line 76 of file CSCTMBTrailer.cc.

References assert(), crc22(), and setCRC().

{
  CSCTMBTrailer trailer(104, 2006);
  unsigned int crc = 0xb00b1;
  trailer.setCRC(crc);
  assert(trailer.crc22() == 0xb00b1);

  CSCTMBTrailer trailer2(104, 2007);
  crc = 0xb00b1;
  trailer2.setCRC(crc);
  assert(trailer2.crc22() == 0xb00b1);

}

void CSCTMBTrailer::setCRC

(

int

crc

)

Definition at line 65 of file CSCTMBTrailer.cc.

References crcOffset(), and theData.

Referenced by selfTest().

{
  theData[crcOffset()] |= (crc & 0x07ff);
  theData[crcOffset()+1] |= ((crc>>11) & 0x07ff);
}

uint16_t CSCTMBTrailer::sizeInBytes ( ) const

inline

Definition at line 42 of file CSCTMBTrailer.h.

Referenced by CSCTMBTrailer().

{return 16;}

int CSCTMBTrailer::sizeInWords ( ) const

inline

in 16-bit frames

Definition at line 47 of file CSCTMBTrailer.h.

References thePadding.

{return 5+thePadding;}

int CSCTMBTrailer::wordCount

(

)

const

Definition at line 72 of file CSCTMBTrailer.cc.

References theData, and thePadding.

Referenced by CSCTMBTrailer().

{return theData[4+thePadding] & 0x7ff;}

Member Data Documentation

unsigned short CSCTMBTrailer::theData[7]

private

Definition at line 56 of file CSCTMBTrailer.h.

Referenced by check(), crc22(), CSCTMBTrailer(), data(), setCRC(), and wordCount().

unsigned short int CSCTMBTrailer::theFirmwareVersion

private

Definition at line 58 of file CSCTMBTrailer.h.

Referenced by crcOffset(), and de0fOffset().

int CSCTMBTrailer::thePadding

private

Definition at line 57 of file CSCTMBTrailer.h.

Referenced by crcOffset(), CSCTMBTrailer(), de0fOffset(), sizeInWords(), and wordCount().