Fixed bug in response parsing

If the byte 15 is encountered in the message, the parseResponse function
must return asynDisconnected (instead of asynSuccess) so the state of
the axis is accounted for properly.

Makefile

@@ -7,9 +7,7 @@ EPICS_VERSIONS=7.0.7
 ARCH_FILTER=RHEL%
 
 # Specify the version of asynMotor we want to build against
-motorBase_VERSION=7.2.2
+motorBase_VERSION=7.3.2
-
-LIBVERSION=homeerror
 
 # These headers allow to depend on this library for derived drivers.
 HEADERS += src/masterMacsAxis.h

src/masterMacsAxis.cpp

@@ -11,6 +11,11 @@
 #include <string.h>
 #include <unistd.h>
 
+enum moveMode {
+    positionMode,
+    velocityMode,
+};
+
 struct masterMacsAxisImpl {
     /*
     The axis status and axis error of MasterMACS are given as an integer from
@@ -24,6 +29,7 @@ struct masterMacsAxisImpl {
     bool needInit = true;
     bool targetReachedUninitialized;
     bool dynamicLimits;
+    moveMode lastMoveCommand;
 };
 
 /*
@@ -94,6 +100,7 @@ masterMacsAxis::masterMacsAxis(masterMacsController *pC, int axisNo)
           .timeAtHandshake = 0,
           .targetReachedUninitialized = true,
           .dynamicLimits = false,
+          .lastMoveCommand = positionMode,
       })) {
 
     asynStatus status = asynSuccess;
@@ -190,9 +197,7 @@ asynStatus masterMacsAxis::init() {
     double motVelocity = 0.0;
     double motVmax = 0.0;
     double motAccel = 0.0;
-    int motMode = 0;
     int dynamicLimits = 0;
-    int motCanSetMode = 0;
 
     // =========================================================================
 
@@ -262,7 +267,7 @@ asynStatus masterMacsAxis::init() {
                                           __PRETTY_FUNCTION__, __LINE__);
     }
 
-    status = setVeloFields(motVelocity, 0.0, motVmax);
+    status = setVeloFields(abs(motVelocity), 0.0, motVmax);
     if (status != asynSuccess) {
         return status;
     }
@@ -306,37 +311,6 @@ asynStatus masterMacsAxis::init() {
     }
     pMasterMacsA_->dynamicLimits = bool(dynamicLimits);
 
-    // Check the current motor mode
-    status = pC_->read(axisNo_, 07, response);
-    if (status != asynSuccess) {
-        return status;
-    }
-    nvals = sscanf(response, "%d", &motMode);
-    if (nvals != 1) {
-        return pC_->couldNotParseResponse("R07", response, axisNo_,
-                                          __PRETTY_FUNCTION__, __LINE__);
-    }
-
-    // If the readback value from the controller is 3, it is in velocity mode,
-    // which sinqMotor encodes as a 1. Otherwise, it is in position mode.
-    setAxisParamChecked(this, motorMode, motMode == 3);
-
-    // Check if the motor can switch its mode
-    status = pC_->read(axisNo_, 31, response);
-    if (status != asynSuccess) {
-        return status;
-    }
-    nvals = sscanf(response, "%d", &motCanSetMode);
-    if (nvals != 1) {
-        return pC_->couldNotParseResponse("R31", response, axisNo_,
-                                          __PRETTY_FUNCTION__, __LINE__);
-    }
-
-    // If the readback value from the controller is 3, the motor supports both
-    // velocity and position mode, otherwise just one of them (the one read out
-    // with motMode).
-    setAxisParamChecked(this, motorCanSetMode, motCanSetMode == 3);
-
     status = readEncoderType();
     if (status != asynSuccess) {
         return status;
@@ -419,10 +393,7 @@ asynStatus masterMacsAxis::readLimits() {
     highLimit = highLimit - limitsOffset;
     lowLimit = lowLimit + limitsOffset;
 
-    setAxisParamChecked(this, motorHighLimitFromDriver, highLimit);
+    return setLimits(highLimit, lowLimit);
-    setAxisParamChecked(this, motorLowLimitFromDriver, lowLimit);
-
-    return status;
 }
 
 // Perform the actual poll
@@ -432,10 +403,10 @@ asynStatus masterMacsAxis::doPoll(bool *moving) {
     asynStatus poll_status = asynSuccess;
 
     // Status of read-write-operations of ASCII commands to the controller
-    asynStatus rw_status = asynSuccess;
+    asynStatus rwStatus = asynSuccess;
 
     // Status of parameter library operations
-    asynStatus pl_status = asynSuccess;
+    asynStatus plStatus = asynSuccess;
 
     char response[pC_->MAXBUF_] = {0};
     int nvals = 0;
@@ -484,8 +455,8 @@ asynStatus masterMacsAxis::doPoll(bool *moving) {
         }
 
         pC_->read(axisNo_, 86, response);
-        if (rw_status != asynSuccess) {
+        if (rwStatus != asynSuccess) {
-            return rw_status;
+            return rwStatus;
         }
 
         nvals = sscanf(response, "%lf", &handshakePerformed);
@@ -511,38 +482,20 @@ asynStatus masterMacsAxis::doPoll(bool *moving) {
     getAxisParamChecked(this, motorRecResolution, &motorRecResolution);
 
     // Read the previous motor position
-    pl_status = motorPosition(&previousPosition);
+    plStatus = motorPosition(&previousPosition);
-    if (pl_status != asynSuccess) {
+    if (plStatus != asynSuccess) {
-        return pl_status;
+        return plStatus;
     }
 
     // Update the axis status
-    rw_status = readAxisStatus();
+    rwStatus = readAxisStatus();
-    if (rw_status != asynSuccess) {
+    if (rwStatus != asynSuccess) {
-        return rw_status;
+        return rwStatus;
     }
 
-    // If we wait for a handshake, but the motor was moving in its last poll
+    rwStatus = pC_->read(axisNo_, 12, response);
-    // cycle and has reached its target, it is not moving. Otherwise it is
+    if (rwStatus != asynSuccess) {
-    // considered moving, even if we're still waiting for the handshake.
+        return rwStatus;
-    if (pMasterMacsA_->targetReachedUninitialized) {
-        *moving = false;
-    } else {
-        if (targetReached() || !switchedOn()) {
-            *moving = false;
-        } else {
-            *moving = true;
-        }
-    }
-
-    if (targetReached()) {
-        pMasterMacsA_->targetReachedUninitialized = false;
-    }
-
-    // Read the current position
-    rw_status = pC_->read(axisNo_, 12, response);
-    if (rw_status != asynSuccess) {
-        return rw_status;
     }
     nvals = sscanf(response, "%lf", &currentPosition);
     if (nvals != 1) {
@@ -550,12 +503,59 @@ asynStatus masterMacsAxis::doPoll(bool *moving) {
                                           __PRETTY_FUNCTION__, __LINE__);
     }
 
+    plStatus = setMotorPosition(currentPosition);
+    if (plStatus != asynSuccess) {
+        return plStatus;
+    }
+    setAxisParamChecked(this, motorEncoderPosition, currentPosition);
+
+    if (pMasterMacsA_->lastMoveCommand == velocityMode && !speedEqualZero()) {
+        double actualVelocity = 0.0;
+
+        rwStatus = pC_->read(axisNo_, 14, response);
+        if (rwStatus != asynSuccess) {
+            return rwStatus;
+        }
+        nvals = sscanf(response, "%lf", &actualVelocity);
+        if (nvals != 1) {
+            return pC_->couldNotParseResponse("R14", response, axisNo_,
+                                              __PRETTY_FUNCTION__, __LINE__);
+        }
+
+        // Writes the actual speed in steps per second to the paramLib. This
+        // value is then returned by the RVEL field of the motor record.
+        setAxisParamChecked(this, motorVelocity,
+                            actualVelocity / motorRecResolution);
+
+        // Motor is moving in velocity mode
+        *moving = true;
+
+    } else {
+
+        // If we wait for a handshake, but the motor was moving in its last poll
+        // cycle and has reached its target, it is not moving. Otherwise it is
+        // considered moving, even if we're still waiting for the handshake.
+        if (pMasterMacsA_->targetReachedUninitialized) {
+            *moving = false;
+        } else {
+            if (targetReached() || !switchedOn()) {
+                *moving = false;
+            } else {
+                *moving = true;
+            }
+        }
+
+        if (targetReached()) {
+            pMasterMacsA_->targetReachedUninitialized = false;
+        }
+    }
+
     /*
-    Read out the error if either a fault condition status flag has been set or
+    Read out the error if either a fault condition status flag has been set
-    if a movement has just ended.
+    or if a movement has just ended.
      */
     if (faultConditionSet() || !(*moving)) {
-        rw_status = readAxisError();
+        rwStatus = readAxisError();
     }
 
     msgPrintControlKey keyError = msgPrintControlKey(
@@ -776,9 +776,9 @@ asynStatus masterMacsAxis::doPoll(bool *moving) {
     // Read out the limits, if the motor is not moving and if the limits are
     // dynamic
     if (pMasterMacsA_->dynamicLimits && !(*moving)) {
-        rw_status = readLimits();
+        rwStatus = readLimits();
-        if (rw_status != asynSuccess) {
+        if (rwStatus != asynSuccess) {
-            return rw_status;
+            return rwStatus;
         }
     }
 
@@ -803,16 +803,11 @@ asynStatus masterMacsAxis::doPoll(bool *moving) {
     setAxisParamChecked(this, motorStatusDone, !(*moving));
     setAxisParamChecked(this, motorStatusDirection, direction);
 
-    pl_status = setMotorPosition(currentPosition);
-    if (pl_status != asynSuccess) {
-        return pl_status;
-    }
     return poll_status;
 }
 
-asynStatus masterMacsAxis::doMoveVelocity(double minVelocity,
+asynStatus masterMacsAxis::moveVelocity(double minVelocity, double maxVelocity,
-                                          double maxVelocity,
+                                        double acceleration) {
-                                          double acceleration) {
     // Suppress unused variable warning
     (void)minVelocity;
     (void)acceleration;
@@ -863,7 +858,14 @@ asynStatus masterMacsAxis::doMoveVelocity(double minVelocity,
 
     // Start the move. We do not use the MovTimeout watchdog here, because the
     // motor can move for any time in velocity mode.
-    return pC_->write(axisNo_, 00, "3", timeout);
+    status = pC_->write(axisNo_, 00, "3", timeout);
+    if (status != asynSuccess) {
+        return status;
+    }
+
+    // Cache the information that the current movement is in velocity mode
+    pMasterMacsA_->lastMoveCommand = velocityMode;
+    return status;
 }
 
 asynStatus masterMacsAxis::doMove(double position, int relative,
@@ -971,6 +973,8 @@ asynStatus masterMacsAxis::doMove(double position, int relative,
         return asynError;
     }
 
+    // Cache the information that the current movement is in position mode
+    pMasterMacsA_->lastMoveCommand = positionMode;
     return status;
 }
 
@@ -1271,8 +1275,8 @@ asynStatus masterMacsAxis::readAxisStatus() {
 
     // =========================================================================
 
-    asynStatus rw_status = pC_->read(axisNo_, 10, response);
+    asynStatus rwStatus = pC_->read(axisNo_, 10, response);
-    if (rw_status == asynSuccess) {
+    if (rwStatus == asynSuccess) {
 
         float axisStatus = 0;
         int nvals = sscanf(response, "%f", &axisStatus);
@@ -1284,7 +1288,7 @@ asynStatus masterMacsAxis::readAxisStatus() {
         pMasterMacsA_->axisStatus = toBitset(axisStatus);
     }
 
-    return rw_status;
+    return rwStatus;
 }
 
 asynStatus masterMacsAxis::readAxisError() {
@@ -1292,8 +1296,8 @@ asynStatus masterMacsAxis::readAxisError() {
 
     // =========================================================================
 
-    asynStatus rw_status = pC_->read(axisNo_, 11, response);
+    asynStatus rwStatus = pC_->read(axisNo_, 11, response);
-    if (rw_status == asynSuccess) {
+    if (rwStatus == asynSuccess) {
 
         float axisError = 0;
         int nvals = sscanf(response, "%f", &axisError);
@@ -1303,7 +1307,7 @@ asynStatus masterMacsAxis::readAxisError() {
         }
         pMasterMacsA_->axisError = toBitset(axisError);
     }
-    return rw_status;
+    return rwStatus;
 }
 
 bool masterMacsAxis::readyToBeSwitchedOn() {
@@ -1330,6 +1334,8 @@ bool masterMacsAxis::remoteMode() { return pMasterMacsA_->axisStatus[9]; }
 
 bool masterMacsAxis::targetReached() { return pMasterMacsA_->axisStatus[10]; }
 
+bool masterMacsAxis::speedEqualZero() { return pMasterMacsA_->axisStatus[12]; }
+
 bool masterMacsAxis::internalLimitActive() {
     return pMasterMacsA_->axisStatus[11];
 }

src/masterMacsAxis.h

@@ -52,17 +52,15 @@ class HIDDEN masterMacsAxis : public sinqAxis {
     asynStatus doPoll(bool *moving);
 
     /**
-     * @brief Implementation of the `doMoveVelocity` function from sinqAxis. The
+     * @brief TODO
-     * parameters are described in the documentation of
-     * `sinqAxis::doMoveVelocity`.
      *
      * @param minVelocity
      * @param maxVelocity
      * @param acceleration
      * @return asynStatus
      */
-    asynStatus doMoveVelocity(double minVelocity, double maxVelocity,
+    asynStatus moveVelocity(double minVelocity, double maxVelocity,
-                              double acceleration);
+                            double acceleration);
 
     /**
      * @brief Implementation of the `doMove` function from sinqAxis. The
@@ -252,6 +250,12 @@ class HIDDEN masterMacsAxis : public sinqAxis {
      */
     bool internalLimitActive();
 
+    /**
+     * @brief Read the property from axisStatus (see masterMacsAxisImpl
+     * redefinition in masterMacsAxis.cpp)
+     */
+    bool speedEqualZero();
+
     // Bits 12 and 13 are unused
 
     /**

src/masterMacsController.cpp

@@ -493,7 +493,7 @@ asynStatus masterMacsController::parseResponse(
                     }
                 }
             }
-            break;
+            return asynDisconnected;
         } else if (fullResponse[i] == '\x18') {
             // CAN
             snprintf(drvMessageText, MAXBUF_,