Changeset 10719

Timestamp:

05/16/11 16:09:54 (13 years ago)

Author:

tbretz

Message:

Added some comments.

File:

• trunk/FACT++/src/HeadersFTM.h (modified) (7 diffs)

trunk/FACT++/src/HeadersFTM.h

@@ -22 +22 @@
 
         // FTM internal states
-        kFtmIdle    = 1,
-        kFtmConfig  = 2,
-        kFtmRunning = 3,
+        kFtmIdle    = 1, ///< Trigger output disabled, configuration possible
+        kFtmConfig  = 2, ///< FTM and FTUs are being reconfigured
+        kFtmRunning = 3, ///< Trigger output enabled, configuration ignored
         kFtmCalib   = 4,
     };
@@ -34 +34 @@
         kCmdRead           = 0x0001, ///< Request data
         kCmdWrite          = 0x0002, ///< Send data
-        kCmdStartRun       = 0x0004, ///< Start the trigger
-        kCmdStopRun        = 0x0008, ///< Stop the trigger
+        kCmdStartRun       = 0x0004, ///< Enable the trigger output
+        kCmdStopRun        = 0x0008, ///< Disable the trigger output
         kCmdPing           = 0x0010, ///< Ping all FTUs (get FTU list)
-        kCmdCrateReset     = 0x0020, 
+        kCmdCrateReset     = 0x0020, ///< Reboot (no power cycle) all FTUs and FADs of one crate
         kCmdDisableReports = 0x0040, ///< Disable transmission of rate-reports (dynamic data)
         kCmdToggleLed      = 0xc000,
@@ -47 +47 @@
 
         // second word for StartRun
-        kStartRun          = 0x0001,
-        kTakeNevents       = 0x0002,
+        kStartRun          = 0x0001, ///< ...until kCmdStopRun
+        kTakeNevents       = 0x0002, ///< ...fixed number of events
     };
 
@@ -73 +73 @@
     struct Header
     {
-        uint16_t fDelimiter;      /// Start delimiter
-        uint16_t fType;           /// Type of the data to be received after the header
-        uint16_t fDataSize;       /// Size in words to be received after the header
-        uint16_t fState;          /// State of the FTM state machine
-        uint64_t fBoardId;
-        uint16_t fFirmwareId;
-        uint32_t fTriggerCounter;
-        uint64_t fTimeStamp;
+        uint16_t fDelimiter;      ///< Start delimiter
+        uint16_t fType;           ///< Type of the data to be received after the header
+        uint16_t fDataSize;       ///< Size in words to be received after the header (incl end delim.)
+        uint16_t fState;          ///< State of the FTM central state machine
+        uint64_t fBoardId;        ///< FPGA device DNA (unique chip id)
+        uint16_t fFirmwareId;     ///< Version number
+        uint32_t fTriggerCounter; ///< FTM internal counter of all trigger decision independant of trigger-line enable/disable (reset: start/stop run)
+        uint64_t fTimeStamp;      ///< Internal counter (micro-seconds, reset: start/stop run)
 
         Header() { init(*this); }
@@ -135 +135 @@
     struct StaticDataBoard
     {
-        uint16_t fEnable[4];   // 4x9bits
-        uint16_t fDAC[5];      // 4x12bit + 1xN/40
-        uint16_t fPrescaling;
+        uint16_t fEnable[4];   /// enable of 4x9 pixels coded as 4x9bits
+        uint16_t fDAC[5];      /// 0-3 (A-D) Threshold of patches, 4 (H) Threshold for N out of 4 (12 bit each)
+        uint16_t fPrescaling;  /// Internal readout time of FTUs for trigger counter
 
         StaticDataBoard() { init(*this); }
@@ -149 +149 @@
         enum Limits
         {
-            kMaxMultiplicity    = 40,      ///< Maximum for required trigger multiplicity
-            kMaxWindow          = 0xf,
-            kMaxDeadTime        = 0xffff,
-            kMaxDelayTimeMarker = 0x3ff,
-            kMaxDelayTrigger    = 0x3ff,
-            kMaxTriggerInterval = 0x3ff,
+            kMaxMultiplicity    = 40,      ///< Minimum required trigger multiplicity
+            kMaxWindow          = 0xf,     ///< (4ns * x + 8ns) At least N (multiplicity) rising edges (trigger signal) within this window
+            kMaxDeadTime        = 0xffff,  ///< (4ns * x + 8ns)
+            kMaxDelayTimeMarker = 0x3ff,   ///< (4ns * x + 8ns)
+            kMaxDelayTrigger    = 0x3ff,   ///< (4ns * x + 8ns)
+            kMaxTriggerInterval = 0x3ff,   ///< 
             kMaxSequence        = 0x1f,
+            kMaxDAC             = 0xfff,
             kMaskSettings       = 0xf,
             kMaskLEDs           = 0xf,
@@ -162 +163 @@
         enum GeneralSettings
         {
-            kTrigger    = 0x80,
-            kPedestal   = 0x40,
-            kLPext      = 0x20,
-            kLPint      = 0x10,
-            kExt2       = 0x08,
-            kExt1       = 0x04,
-            kVeto       = 0x02,
-            kTimeMarker = 0x01,
+            kTrigger    = 0x80,  ///< Physics trigger decision (PhysicTrigger)
+            kPedestal   = 0x40,  ///< Pedestal trigger (artifical)
+            kLPext      = 0x20,  ///< Enable trigger decision after light pulse (CalibrationTrigger, LP1)
+            kLPint      = 0x10,  ///< Enable artificial trigger after light pulse (LP2)
+            kExt2       = 0x08,  ///< External trigger signal 2
+            kExt1       = 0x04,  ///< External trigger signal 1
+            kVeto       = 0x02,  ///< Veto trigger decision / artifical triggers
+            // -===> ClockCond
+            kTimeMarker = 0x01,  ///< Select clock conditioner frequency (1) / time marker (0) as output
         };
 
-        uint16_t fGeneralSettings;         // only 8 bit used
+        uint16_t fGeneralSettings;         // Enable for different trigger types / select for TIM/ClockConditioner output (only 8 bit used)
         uint16_t fStatusLEDs;              // only 8 bit used
-        uint16_t fTriggerInterval;         // only 10 bit used
-        uint16_t fTriggerSequence;         // 3x5bit
+        uint16_t fTriggerInterval;         // [ms] Interval between two artificial triggers (no matter which type) minimum 1ms, 10 bit
+        uint16_t fTriggerSequence;         // Ratio between trigger types send as artificial trigger (in this order) 3x5bit
         uint64_t fDummy0;
-        uint16_t fMultiplicityPhysics;
-        uint16_t fMultiplicityCalib;
-        uint16_t fDelayTrigger;
-        uint16_t fDelayTimeMarker;
-        uint16_t fDeadTime;
-        uint32_t fClockConditioner[8];  // R0, R1, R8, R9, R11, R13, R14, R15
-        uint16_t fWindowPhysics;
-        uint16_t fWindowCalib;
+        uint16_t fMultiplicityPhysics;     /// Required trigger multiplicity for physcis triggers (0-40)
+        uint16_t fMultiplicityCalib;       /// Required trigger multiplicity calibration (LPext) triggers (0-40)
+        uint16_t fDelayTrigger;            /// (4ns * x + 8ns) FTM internal programmable delay between trigger decision and output
+        uint16_t fDelayTimeMarker;         /// (4ns * x + 8ns) FTM internal programmable delay between trigger descision and time marker output
+        uint16_t fDeadTime;                /// (4ns * x + 8ns) FTM internal programmable dead time after trigger decision
+        uint32_t fClockConditioner[8];     // R0, R1, R8, R9, R11, R13, R14, R15
+        uint16_t fWindowPhysics;           /// (4ns * x + 8ns) At least N (multiplicity) rising edges (trigger signal) within this window
+        uint16_t fWindowCalib;             /// (4ns * x + 8ns) At least N (multiplicity) rising edges (trigger signal) within this window
         uint16_t fDummy1;
 
-        StaticDataBoard fBoard[4][10];      // 4 crates * 10 boards
-
-        uint16_t fActiveFTU[4];             // 4 crates * 10 bits
+        StaticDataBoard fBoard[4][10];      // 4 crates * 10 boards (Crate0/FTU0 == readout time of FTUs)
+
+        uint16_t fActiveFTU[4];             // 4 crates * 10 bits   (FTU enable)
 
         StaticData() { init(*this); }