Changeset 18124

Timestamp:

02/13/15 09:22:52 (10 years ago)

Author:

tbretz

Message:

Implemented an emergency limit in raw adc counts at which, if exceeded, the bias voltage is turned off and at which it goes to locked state. Default value is 2200.

File:

• trunk/FACT++/src/biasctrl.cc (modified) (9 diffs)

trunk/FACT++/src/biasctrl.cc

@@ -65 +65 @@
     Time fLastConnect;
 
+    int32_t  fEmergencyLimit;
+    bool     fEmergencyShutdown;
+
 protected:
 
@@ -270 +273 @@
             fCurrent[id]    = status ? -(ddd==0?1:ddd) : ddd;
             fPresent[board] = true;
+
+            if (fEmergencyLimit>0 && fCurrent[id]>fEmergencyLimit && !fEmergencyShutdown)
+            {
+                Info("Emergency shutdown initiated.");
+                RampAllDacs(0);
+                fEmergencyShutdown = true;
+            }
         }
 
@@ -840 +850 @@
         fWaitingForAnswer(-1),
         fCounter(8),
+        fEmergencyLimit(0),
+        fEmergencyShutdown(false),
         fCurrent(kNumChannels),
         fOperationVoltage(kNumChannels, 0),
@@ -1498 +1510 @@
         fReconnectDelay = delay;
     }
+
+    void SetEmergencyLimit(int32_t limit=0)
+    {
+        fEmergencyLimit = limit;
+    }
+
+    void ResetEmergencyShutdown()
+    {
+        fEmergencyShutdown = false;
+    }
+
+    bool IsEmergencyShutdown() const
+    {
+        return fEmergencyShutdown;
+    }
 };
 
@@ -1879 +1906 @@
         const int state = fBias.GetStatus();
 
+        if (fBias.IsEmergencyShutdown() && state>State::kInitializing && state<State::kExpertMode)
+        {
+            fBias.RampAllDacs(0);
+            fBias.ResetEmergencyShutdown();
+            return State::kLocked;
+        }
+
         const Time now;
         if (now>fSunRise)
@@ -1900 +1934 @@
         }
 
+        if (T::GetCurrentState()==State::kLocked)
+            return T::GetCurrentState();
+
         if (fExpertMode && state>=State::kConnected)
             return State::kExpertMode;
@@ -1943 +1980 @@
 
         T::AddStateName(State::kLocked, "Locked",
-                        "Locked, no commands accepted except UNLOCK.");
+                        "Locked due to emergency shutdown, no commands accepted except UNLOCK.");
 
         // Verbosity commands
@@ -2121 +2158 @@
         fBias.SetRampTime(time);
         fBias.SetUpdateInterval(conf.Get<uint32_t>("update-interval"));
+        fBias.SetEmergencyLimit(conf.Get<uint16_t>("emergency-limit"));
         fBias.SetSyncDelay(conf.Get<uint16_t>("sync-delay"));
 
@@ -2222 +2260 @@
         ("bias-map-file",   var<string>(),       "File with nominal and offset voltages for each channel.")
         ("bias-database",   var<string>(),       "")
+        ("emergency-limit", var<uint16_t>(2200), "A current limit in ADC counts which, if exceeded, will initiate an emergency shutdown (0=off)")
         ;