Code modified to read/write filter module data directly from/to EPICS shared memory area.

This removes the need to call code in epicsXfer.c to move this data to/from local memory space,
which had to be spread out across code cycles.
Initial testing shows no degradation in performance, actually some overall improvement in cycle
time stability. Regression testing of filter modules was performed on LHO DAQ test system.


git-svn-id: https://redoubt.ligo-wa.caltech.edu/svn/advLigoRTS/trunk@3427 6dcd42c9-f523-4c6d-aada-af552506706e

src/fe/controller.c

@@ -416,7 +416,8 @@ void *fe_start(void *arg)
   // Set pointers to filter module data buffers
     pDsp[system] = (FILT_MOD *)(&pEpicsComms->dspSpace);
     pCoeff[system] = (VME_COEF *)(&pEpicsComms->coeffSpace);
-    dspPtr[system] = dsp;
+    // dspPtr[system] = dsp;
+    dspPtr[system] = (FILT_MOD *)(&pEpicsComms->dspSpace);
 
   // Clear the FE reset which comes from Epics
   pLocalEpics->epicsInput.vmeReset = 0;
@@ -459,11 +460,10 @@ printf("Sync source = %d\n",syncSource);
 
 // BURT has completed *******************************************************************
 
-// Read in all Filter Module EPICS settings
+// Read in all Filter Module EPICS coeff settings
     for(ii=0;ii<MAX_MODULES;ii++)
     {
-	updateEpics(ii, dspPtr[0], pDsp[0],
-		    &dspCoeff[0], pCoeff[0]);
+	checkFiltReset(ii, dspPtr[0], pDsp[0], &dspCoeff[0], MAX_MODULES, pCoeff[0]);
     }
 
   // Need this FE dcuId to make connection to FB
@@ -1475,21 +1475,7 @@ udelay(1000);
         }
 
 
-	/* Update User code Filter Module Epics variables */
-	// if(subcycle == HKP_FM_EPICS_UPDATE)
-        if((subcycle == (DAQ_CYCLE_CHANGE - 1)) && ((daqCycle % 2) == 1)) 
-	{
-		//.for(ii=0;ii<MAX_MODULES;ii++)
-		//{
-		// Following call sends all filter module data to epics each time called.
-			//updateEpics(ii, dspPtr[0], pDsp[0],
-			    //&dspCoeff[0], pCoeff[0]);
-		//}
-		// Send sync signal to EPICS sequencer
-		// pLocalEpics->epicsOutput.epicsSync = daqCycle;
-		updateFmSetpoints(dspPtr[0], pDsp[0], &dspCoeff[0], pCoeff[0]);
-	}
-	// Spread out filter update, but keep updates at 16 Hz
+	// Spread out filter coeff update, but keep updates at 16 Hz
 	// here we are rounding up:
 	//   x/y rounded up equals (x + y - 1) / y
 	//
@@ -1499,7 +1485,7 @@ udelay(1000);
 		unsigned int empc = smpc + mpc; // End module counter
 		unsigned int i;
 		for (i = smpc; i < MAX_MODULES && i < empc ; i++) 
-			updateEpics(i, dspPtr[0], pDsp[0], &dspCoeff[0], pCoeff[0]);
+			checkFiltReset(i, dspPtr[0], pDsp[0], &dspCoeff[0], MAX_MODULES, pCoeff[0]);
 	}
 
 	// Check if code exit is requested