Moved the initialization of some parameters into sinqMotor

(https://forge.frm2.tum.de/review/c/frm2/nicos/nicos/+/35285)

README.md

@@ -75,7 +75,8 @@ dbLoadTemplate("$(TOP)/mcu1.substitutions", "INSTR=$(INSTR)$(NAME):,CONTROLLER=$
 
 ### Substitution file
 
-The substitution file is a table containing axis-specific information which is used to create the axis-specific PVs. To work with sinqMotor, "mcu1.substitutions" needs to look like this:
+The substitution file is a table containing axis-specific information which is used to create the axis-specific PVs.
+To work with sinqMotor, "mcu1.substitutions" needs to look like this (the order of columns does not matter):
 ```
 file "$(SINQDBPATH)"
 {
@@ -93,13 +94,13 @@ The variable `SINQDBPATH` has been set in "mcu1.cmd" before calling `dbLoadTempl
 
 - `AXIS`: Index of the axis, corresponds to the physical connection of the axis to the MCU.
 - `M`: The full PV name is created by concatenating the variables INSTR, NAME and M. For example, the PV of the first axis would be "SQ:SINQTEST:mcu1:lin1".
-- `DESC`: Description of the motor. This field is just for documentation and is not needed for operating a motor.
 - `EGU`: Engineering units. For a linear motor, this is mm, for a rotaty motor, this is degree.
 - `DIR`: If set to "Neg", the axis direction is inverted.
 - `MRES`: This is a scaling factor determining the resolution of the position readback value. For example, 0.001 means a precision of 1 um. A detailed description can be found in section [Motor record resolution MRES](#motor-record-resolution-mres).
 
 #### Optional parameters
 The default values for those parameters are given for the individual records in db/sinqMotor.db
+- `DESC`: Description of the motor. This field is just for documentation and is not needed for operating a motor.
 - `MSGTEXTSIZE`: Buffer size for the motor message record in characters
 - `ENABLEMOVWATCHDOG`: Sets `setWatchdogEnabled` during IOC startup to the given value.
 - `LIMITSOFFSET`: If the motor limits are read out from the controller, they can 

src/sinqAxis.cpp

@@ -5,32 +5,63 @@
 
 sinqAxis::sinqAxis(class sinqController *pC, int axisNo)
     : asynMotorAxis((asynMotorController *)pC, axisNo), pC_(pC) {
+    asynStatus status = asynSuccess;
 
     initial_poll_ = true;
     watchdogMovActive_ = false;
     init_poll_counter_ = 0;
     scaleMovTimeout_ = 2.0;
     offsetMovTimeout_ = 30;
-}
-
-asynStatus sinqAxis::atFirstPoll() {
-    asynStatus status = asynSuccess;
-    int variableSpeed = 0;
 
     // Motor is assumed to be enabled
     status = pC_->setIntegerParam(axisNo_, pC_->motorEnableRBV_, 1);
     if (status != asynSuccess) {
-        return pC_->paramLibAccessFailed(status, "motorEnableRBV_",
-                                         __PRETTY_FUNCTION__, __LINE__);
+        asynPrint(
+            pC_->pasynUserSelf, ASYN_TRACE_ERROR,
+            "%s => line %d:\nFATAL ERROR (setting a parameter value failed "
+            "with %s)\n. Terminating IOC",
+            __PRETTY_FUNCTION__, __LINE__, pC_->stringifyAsynStatus(status));
+        exit(-1);
     }
 
     // By default, motors cannot be disabled
     status = pC_->setIntegerParam(axisNo_, pC_->motorCanDisable_, 0);
     if (status != asynSuccess) {
-        return pC_->paramLibAccessFailed(status, "motorCanDisable_",
-                                         __PRETTY_FUNCTION__, __LINE__);
+        asynPrint(
+            pC_->pasynUserSelf, ASYN_TRACE_ERROR,
+            "%s => line %d:\nFATAL ERROR (setting a parameter value failed "
+            "with %s)\n. Terminating IOC",
+            __PRETTY_FUNCTION__, __LINE__, pC_->stringifyAsynStatus(status));
+        exit(-1);
     }
 
+    // Provide a default value for the motor position.
+    status = pC_->setDoubleParam(axisNo_, pC_->motorPosition_, 0.0);
+    if (status != asynSuccess) {
+        asynPrint(
+            pC_->pasynUserSelf, ASYN_TRACE_ERROR,
+            "%s => line %d:\nFATAL ERROR (setting a parameter value failed "
+            "with %s)\n. Terminating IOC",
+            __PRETTY_FUNCTION__, __LINE__, pC_->stringifyAsynStatus(status));
+        exit(-1);
+    }
+
+    // We assume that the motor has no status problems initially
+    status = pC_->setIntegerParam(axisNo_, pC_->motorStatusProblem_, 0);
+    if (status != asynSuccess) {
+        asynPrint(
+            pC_->pasynUserSelf, ASYN_TRACE_ERROR,
+            "%s => line %d:\nFATAL ERROR (setting a parameter value failed "
+            "with %s)\n. Terminating IOC",
+            __PRETTY_FUNCTION__, __LINE__, pC_->stringifyAsynStatus(status));
+        exit(-1);
+    }
+}
+
+asynStatus sinqAxis::atFirstPoll() {
+    asynStatus status = asynSuccess;
+    int variableSpeed = 0;
+
     status =
         pC_->getIntegerParam(axisNo_, pC_->motorCanSetSpeed_, &variableSpeed);
     if (status != asynSuccess) {

src/sinqController.cpp

@@ -290,7 +290,7 @@ asynStatus sinqController::errMsgCouldNotParseResponse(const char *command,
     asynStatus pl_status = asynSuccess;
 
     asynPrint(lowLevelPortUser_, ASYN_TRACE_ERROR,
-              "%s => line %d:\nCould not interpret response %s for "
+              "%s => line %d:\nCould not interpret response '%s' for "
               "command %s.\n",
               functionName, lineNumber, response, command);