CSCTMBTrailer Class Reference

#include <CSCTMBTrailer.h>

Public Member Functions
bool	check () const
unsigned int	crc22 () const
	CSCTMBTrailer (const CSCTMBStatusDigi &digi)
	CSCTMBTrailer (const uint16_t *buf, unsigned short int firmwareVersion)
	CSCTMBTrailer (int wordCount, int firmwareVersion)
	don't forget to pass in the size of the tmb header + clct data More...
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 28 of file CSCTMBTrailer.h.

Constructor & Destructor Documentation

CSCTMBTrailer() [1/3]

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.

                                                               : 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;
}

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

CSCTMBTrailer() [2/3]

CSCTMBTrailer::CSCTMBTrailer	(	const uint16_t *	buf,
		unsigned short int	firmwareVersion
	)

in 2007 format de0f line moved

Definition at line 29 of file CSCTMBTrailer.cc.

    : 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!";
  }
}

References visDQMUpload::buf, simCaloStage2Layer1Digis_cfi::firmwareVersion, theData, and thePadding.

CSCTMBTrailer() [3/3]

CSCTMBTrailer::CSCTMBTrailer ( const CSCTMBStatusDigi &  digi )

inline

Definition at line 35 of file CSCTMBTrailer.h.

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

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

Member Function Documentation

check()

bool CSCTMBTrailer::check ( ) const

inline

Definition at line 40 of file CSCTMBTrailer.h.

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

References theData.

crc22()

unsigned int CSCTMBTrailer::crc22

(

)

const

Definition at line 51 of file CSCTMBTrailer.cc.

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

References crcOffset(), and theData.

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

crcOffset()

int CSCTMBTrailer::crcOffset ( ) const

inlineprivate

Definition at line 49 of file CSCTMBTrailer.h.

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

References theFirmwareVersion, and thePadding.

Referenced by crc22(), and setCRC().

data()

unsigned short* CSCTMBTrailer::data ( )

inline

Definition at line 43 of file CSCTMBTrailer.h.

{ return theData; }

References theData.

Referenced by CSCTMBData::pack().

de0fOffset()

int CSCTMBTrailer::de0fOffset ( ) const

inlineprivate

Definition at line 50 of file CSCTMBTrailer.h.

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

References theFirmwareVersion, and thePadding.

Referenced by CSCTMBTrailer().

selfTest()

void CSCTMBTrailer::selfTest ( )

static

Definition at line 62 of file CSCTMBTrailer.cc.

                             {
  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);
}

References cms::cuda::assert(), crc22(), and setCRC().

setCRC()

void CSCTMBTrailer::setCRC

(

int

crc

)

Definition at line 55 of file CSCTMBTrailer.cc.

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

References crcOffset(), and theData.

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

sizeInBytes()

uint16_t CSCTMBTrailer::sizeInBytes ( ) const

inline

Definition at line 37 of file CSCTMBTrailer.h.

{ return 16; }

Referenced by CSCTMBTrailer().

sizeInWords()

int CSCTMBTrailer::sizeInWords ( ) const

inline

in 16-bit frames

Definition at line 42 of file CSCTMBTrailer.h.

{ return 5 + thePadding; }

References thePadding.

Referenced by CSCTMBData::pack(), and CSCTMBData::UnpackTMB().

wordCount()

int CSCTMBTrailer::wordCount

(

)

const

Definition at line 60 of file CSCTMBTrailer.cc.

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

References theData, and thePadding.

Referenced by CSCTMBTrailer(), and cscdqm::EventProcessor::processCSC().

Member Data Documentation

theData

unsigned short CSCTMBTrailer::theData[7]

private

Definition at line 52 of file CSCTMBTrailer.h.

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

theFirmwareVersion

unsigned short int CSCTMBTrailer::theFirmwareVersion

private

Definition at line 54 of file CSCTMBTrailer.h.

Referenced by crcOffset(), and de0fOffset().

thePadding

int CSCTMBTrailer::thePadding

private

Definition at line 53 of file CSCTMBTrailer.h.

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