Fixed some warnings

The field SPDB can now be populated via either the substitutions file or
from inside the driver (using the motorPositionDeadband paramLib entry).

.gitea/workflows/action.yaml

@@ -0,0 +1,23 @@
+name: Test And Build
+on: [push]
+
+jobs:
+  Lint:
+    runs-on: linepics
+    steps:
+      - name: checkout repo
+        uses: actions/checkout@v4
+      - name: cppcheck
+        run: cppcheck --std=c++17 --addon=cert --addon=misc --error-exitcode=1 src/*.cpp
+      - name: formatting
+        run: clang-format --style=file --Werror --dry-run src/*.cpp
+  Build:
+    runs-on: linepics
+    steps:
+      - name: checkout repo
+        uses: actions/checkout@v4
+        with:
+          submodules: 'true'
+      - run: |
+          sed -i 's/ARCH_FILTER=.*/ARCH_FILTER=linux%/' Makefile
+          make install

.gitlab-ci.yml

@@ -1,41 +0,0 @@
-default:
-  image: docker.psi.ch:5000/sinqdev/sinqepics:latest
-
-stages:
-  - lint
-  - build
-  - test
-
-cppcheck:
-  stage: lint
-  script:
-    - cppcheck --std=c++17 --addon=cert --addon=misc --error-exitcode=1 src/*.cpp
-  artifacts:
-    expire_in: 1 week
-  tags:
-    - sinq
-
-formatting:
-  stage: lint
-  script:
-    - clang-format --style=file --Werror --dry-run src/*.cpp
-  artifacts:
-    expire_in: 1 week
-  tags:
-    - sinq
-
-build_module:
-  stage: build
-  script:
-    - sed -i 's/ARCH_FILTER=.*/ARCH_FILTER=linux%/' Makefile
-    - echo "LIBVERSION=${CI_COMMIT_TAG:-0.0.1}" >> Makefile
-    - make install
-    - cp -rT "/ioc/modules/sinqMotor/$(ls -U /ioc/modules/sinqMotor/ | head -1)" "./sinqMotor-${CI_COMMIT_TAG:-$CI_COMMIT_SHORT_SHA}"
-  artifacts:
-    name: "sinqMotor-${CI_COMMIT_TAG:-$CI_COMMIT_SHORT_SHA}"
-    paths:
-      - "sinqMotor-${CI_COMMIT_TAG:-$CI_COMMIT_SHORT_SHA}/*"
-    expire_in: 1 week
-  when: always
-  tags:
-    - sinq

Makefile

@@ -26,6 +26,7 @@ TEMPLATES += db/sinqMotor.db
 # This file registers the motor-specific functions in the IOC shell.
 DBDS += src/sinqMotor.dbd
 
-USR_CFLAGS += -Wall -Wextra -Weffc++ -Wunused-result # -Werror
+USR_CFLAGS += -Wall -Wextra -Wunused-result # -Werror
+USR_CXXFLAGS += -Wall -Wextra -Wunused-result
 
 # MISCS would be the place to keep the stream device template files

README.md

@@ -62,30 +62,28 @@ To find out which version of sinqMotor is needed by a driver, refer to its Makef
 
 ### IOC startup script
 
-An EPICS IOC for motor control at SINQ is started by executing a script with the IOC shell. In its simplest form, an IOC for two controllers is a file looking like this:
+An EPICS IOC for motor control at SINQ is started by executing a script with the IOC shell. In its simplest form, an IOC for two controllers run by "exampleDriver" is a file looking like this:
 ```
 #!/usr/local/bin/iocsh  
 
 # Load libraries needed for the IOC
-require sinqMotor, 1.0.0
-require actualDriver, 1.2.0
+require exampleDriver, 1.0.0
 
 # Define environment variables used later to parametrize the individual controllers
 epicsEnvSet("TOP","/ioc/sinq-ioc/sinqtest-ioc/")
 epicsEnvSet("INSTR","SQ:SINQTEST:")
 
 # Include other scripts for the controllers 1 and 2
-< actualDriver.cmd 
-< actualDriver.cmd 
+< exampleDriver1.cmd 
+< exampleDriver2.cmd 
 
 iocInit()
 ```
-The first line is a so-called shebang which instructs Linux to execute the file with the executable located at the given path - the IOC shell in this case. The controller script "mcu1.cmd" looks like this:
-The script for controller 1 ("turboPmac1.cmd") for a Turbo PMAC (see https://git.psi.ch/sinq-epics-modules/turboPmac) has the following structure. The scripts for other controller types can be found in the README.md of their respective repositories.
+The first line is a so-called shebang which instructs Linux to execute the file with the executable located at the given path - the IOC shell in this case. The files `exampleDriver1.cmd` or `exampleDriver2` then look like this:
 
 ```
 # Define the name of the controller and the corresponding port
-epicsEnvSet("DRIVER_PORT","actualDriver1")
+epicsEnvSet("DRIVER_PORT","exampleDriver1")
 epicsEnvSet("IP_PORT","p$(DRIVER_PORT)")
 
 # Create the TCP/IP socket used to talk with the controller. The socket can be adressed from within the IOC shell via the port name
@@ -116,17 +114,17 @@ setForcedFastPolls("$(DRIVER_PORT)", 10);
 setThresholdComTimeout("$(DRIVER_PORT)", 300, 10);
 
 # Parametrize the EPICS record database with the substitution file named after the motor controller.
-epicsEnvSet("SINQDBPATH","$(sinqMotor_DB)/sinqMotor.db")
+epicsEnvSet("SINQDBPATH","$(exampleDriver_DB)/sinqMotor.db")
 dbLoadTemplate("$(TOP)/$(DRIVER_PORT).substitutions", "INSTR=$(INSTR)$(DRIVER_PORT):,CONTROLLER=$(DRIVER_PORT)")
-epicsEnvSet("SINQDBPATH","$(actualDriver_DB)/turboPmac.db")
+epicsEnvSet("SINQDBPATH","$(exampleDriver_DB)/turboPmac.db")
 dbLoadTemplate("$(TOP)/$(DRIVER_PORT).substitutions", "INSTR=$(INSTR)$(DRIVER_PORT):,CONTROLLER=$(DRIVER_PORT)")
-dbLoadRecords("$(sinqMotor_DB)/asynRecord.db","P=$(INSTR)$(DRIVER_PORT),PORT=$(IP_PORT)")
+dbLoadRecords("$(exampleDriver_DB)/asynRecord.db","P=$(INSTR)$(DRIVER_PORT),PORT=$(IP_PORT)")
 ```
 
 ### 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 order of columns does not matter):
+To work with sinqMotor, `exampleDriver1.substitutions` needs to look like this (the order of columns does not matter):
 ```
 file "$(SINQDBPATH)"
 {
@@ -206,9 +204,11 @@ transferred to (motor_record_pv_name).MRES or to
 
 ## Developer guide
 
-### Base classes
+### File structure
 
-sinqMotor offers a variety of additional methods for children classes to standardize certain patterns (e.g. writing messages to the IOC shell and the motor message PV). For a detailed description, please see the respective function documentation in the .h-files. All of these functions can be overwritten manually if e.g. a completely different implementation of `poll` is required. Some functions are marked as virtual, because they are called from other functions of sinqMotor and therefore need runtime polymorphism. Functions without that marker are not called anywhere in sinqMotor.
+sinqMotor offers a variety of additional methods for children classes to standardize certain patterns (e.g. writing messages to the IOC shell and the motor message PV). For a detailed description, please see the respective function documentation in the .h-files. All of these functions can be overwritten manually if e.g. a completely different implementation of `poll` is required. Some functions are marked as virtual, because they are called from other functions of sinqMotor and therefore need runtime polymorphism. Functions without that marker are not called anywhere in sinqMotor (except for `forcedPoll`, which is called in `poll`).
+
+Adding new virtual methods breaks the ABI and therefore warrants a new major version number!
 
 #### sinqController.h
 - `couldNotParseResponse`: Write a standardized message if parsing a device response failed.
@@ -230,7 +230,15 @@ It calls `doReset` and performs some fast polls after `doReset` returns.
 - `doMove`: This is an empty function which should be overwritten by concrete driver implementations.
 - `home`: This function sets the internal status flags for the homing process and then calls doHome.
 - `doHome`: This is an empty function which should be overwritten by concrete driver implementations.
-- `poll`: This is a wrapper around `doPoll` which performs some bookkeeping tasks before and after calling `doPoll`:
+- `poll`: This is a wrapper around `forcedPoll` which does the following checks before calling `forcedPoll`:
+  - Are there any outstanding fast polls (method `outstandingForcedFastPolls` of the controller returns a value greater zero)?
+  - Was the axis moving last time its status was polled?
+  - Is adaptive polling disabled?
+  - Did an idle period pass since the last poll?
+If all of these conditions are false, no poll is performed. Otherwise, the `forcedPoll` method is called.
+This method should not be called in the driver code itself if a poll is needed - use `forcedPoll` instead!
+
+- `forcedPoll`: This is a wrapper around `doPoll` which performs some bookkeeping tasks before and after calling `doPoll`:
 
   Before calling `doPoll`:
   - Check if the paramLib already contains an old error message. If so, put it into a temporary bufffer
@@ -249,12 +257,27 @@ It calls `doReset` and performs some fast polls after `doReset` returns.
 - `startMovTimeoutWatchdog`: Starts a watchdog for the movement time. This watchdog compares the actual time spent in a movement operation with an expected time, which is calculated based on the distance of the current and the target position.
 - `checkMovTimeoutWatchdog`: Check if the watchdog timed out.
 - `setWatchdogEnabled`: Enables / disables the watchdog. This function is also available in the IOC shell.
-- `setOffsetMovTimeout`: Set a linear offset for the expected movement time. This function is also available in the IOC shell.
+- `setOffsetMovTimeout`: Set a constant offset for the expected movement time. This function is also available in the IOC shell.
 - `setScaleMovTimeout`: Set a scaling factor for the expected movement time. This function is also available in the IOC shell.
 
 #### msgPrintControl.h
 In addition to the two extension classes this library also includes a mechanism which prevents excessive repetitions of the same error message to the IOC shell via the classes `msgPrintControl` and `msgPrintControlKey`. A detailed description of the mechanism can be found in the docstring of `msgPrintControl`. The implementation of the `poll` function of `sinqAxis` also contains an example how to use it. Using this feature in derived drivers is entirely optional.
 
+#### macros.h
+Contains macros used in `sinqMotor` and derived drivers:
+
+- **HIDDEN**
+
+  By default, the symbols of classes and functions are hidden to avoid symbol clashes when loading
+  multiple shared libraries which use `sinqMotor`. In order to compile this library with exported
+  symbols, specifiy `-DHIDDEN= ` as a compiler flag (if using the given Makefile, this
+  needs to be added to the `USR_CFLAGS`).
+
+  Derived libraries can use the same mechanism via the macro `HIDDEN` (defined in `macros.h`):
+  ```
+  class HIDDEN turboPmacController : public sinqController
+  ```
+
 ### Versioning
 
 The versioning is done via git tags. Git tags are recognized by the PSI build system: If you tag a version as 1.0, it will be built into the directory /ioc/modules/sinqMotor/1.0. The tag is directly coupled to a commit so that it is always clear which source code was used to build which binary.
@@ -277,18 +300,28 @@ To use the library when writing a concrete motor driver, include it in the makef
 
 ### Usage as static dependency
 
-This repository is included as a git submodule in some of the driver repositories depending upon sinqMotor. When installing via a Makefile (`make install`) using the PSI build system, the following git command is executed within `/ioc/tools/driver.makefile`:
+This repository is included as a git submodule in the driver repositories depending upon sinqMotor. When installing via a Makefile (`make install`) using the PSI build system, the following git command is executed within `/ioc/tools/driver.makefile`:
 
 `git submodule update --init --recursive`
 
 This forces each submodule to be checked out at the latest commit hash stored in the remote repository. However, this is usually unwanted behaviour, since the higher-level drivers are usually designed to be compiled against a specific version of sinqMotor. In order to set the submodule to a specific version, the following steps need to be done BEFORE calling `make install`:
 
 - `cd sinqMotor`
-- `git checkout 0.1`
+- `git checkout 1.0`
 - `cd ..`
 
-Then, the fixation of the version to 0.1 needs to be committed in the parent repository:
+Then, the fixation of the version to 1.0 needs to be committed in the parent repository:
 
-- `git commit -m "Update sinqMotor to 0.1"`
+- `git commit -m "Update sinqMotor to 1.0"`
 
-After this commit, running `make install` will use the correct driver version for compilation.
+After this commit, running `make install` will use the correct driver version for compilation. 
+
+If your driver uses another driver as a static dependency via git submodule which in turn includes a sinqMotor submodule, it is not necessary to specify the version of sinqMotor. Instead, specify the desired commit of the direct dependency, commit this change and then update all submodules:
+
+- `cd turboPmac`
+- `git checkout 1.0`
+- `cd ..`
+- `git commit -m "Update turboPmac to 1.0"`
+- `git submodule update --init --recursive`
+
+This will update sinqMotor to the version specified in the 1.0 commit of turboPmac.

db/sinqMotor.db

@@ -41,6 +41,7 @@ record(motor,"$(INSTR)$(M)")
     field(PINI,"NO")
     field(DHLM, "$(DHLM=0)")
     field(DLLM, "$(DLLM=0)")
+    field(SPDB, "$(SPDB=0)")
     field(TWV,"1")
     field(RTRY,"0")
     field(RDBD, "$(RDBD=10e300)") # Suppress retries and overshoot stop commands
@@ -238,6 +239,27 @@ record(ao, "$(INSTR)$(M):PushDLLM2Field") {
     field(PINI, "NO")
 }
 
+# This record pair reads the parameter library value for "motorPositionDeadband"
+# and pushes it to the motor record field "SPDP". This can be used to the position
+# deadband from the hardware
+# The implementation strategy is taken from https://epics.anl.gov/tech-talk/2022/msg00464.php.
+# This record is coupled to the parameter library via motorPositionDeadband -> MOTOR_POSITION_DEADBAND.
+record(ai, "$(INSTR)$(M):SPDB_RBV")
+{
+    field(DTYP, "asynFloat64")
+    field(VAL, "$(SPDP=0)")
+    field(INP,  "@asyn($(CONTROLLER),$(AXIS)) MOTOR_POSITION_DEADBAND")
+    field(SCAN, "I/O Intr")
+    field(FLNK, "$(INSTR)$(M):PushSPDB2Field")
+    field(PINI, "NO")
+}
+record(ao, "$(INSTR)$(M):PushSPDB2Field") {
+    field(DOL,  "$(INSTR)$(M):SPDB_RBV NPP")
+    field(OUT,  "$(INSTR)$(M).SPDB")
+    field(OMSL, "closed_loop")
+    field(PINI, "NO")
+}
+
 # This record pair reads the parameter library value for "motorVeloFromDriver_"
 # and pushes it to the motor record field "VELO". This can be used to read the speed value
 # from the hardware and correspondingly update the motor record from the driver.

src/macros.h

@@ -0,0 +1,22 @@
+// Collection of macros used in sinqMotor and derived classes
+
+#ifndef macros_H
+#define macros_H
+
+/*
+The macro "HIDDEN" hides the symbol of the annotated class / function. This is
+useful to avoid symbol clashes when loading multiple shared libraries in a
+single IOC. To override the hiding, add `-DHIDDEN= ` to your compiler
+flags (in this case, the symbols will be exported with their default
+visibility).
+*/
+#ifndef HIDDEN
+#if defined(_WIN32) || defined(__CYGWIN__)
+#define HIDDEN
+#else
+#define HIDDEN __attribute__((visibility("hidden")))
+#endif
+#endif
+
+// macros_H
+#endif

src/msgPrintControl.cpp

@@ -5,21 +5,19 @@
 
 msgPrintControlKey::msgPrintControlKey(char *controller, int axisNo,
                                        const char *functionName, int line,
-                                       size_t maxRepetitions) {
-    controller_ = controller;
-    axisNo_ = axisNo;
-    line_ = line;
-    functionName_ = functionName;
-    maxRepetitions_ = maxRepetitions;
-}
+                                       size_t maxRepetitions)
+    : controller_(controller), axisNo_(axisNo), functionName_(functionName),
+      line_(line), maxRepetitions_(maxRepetitions) {}
 
 void msgPrintControlKey::format(char *buffer, size_t bufferSize) {
     snprintf(buffer, bufferSize, "controller %s, axis %d, function %s, line %d",
-             controller_.c_str(), axisNo_, functionName_, line_);
+             controller_.c_str(), axisNo_, functionName_.c_str(), line_);
 }
 
 // =============================================================================
 
+msgPrintControl::~msgPrintControl() = default;
+
 bool msgPrintControl::shouldBePrinted(msgPrintControlKey &key, bool wantToPrint,
                                       asynUser *pasynUser) {
 
@@ -76,8 +74,8 @@ bool msgPrintControl::shouldBePrinted(msgPrintControlKey &key, bool wantToPrint,
                         pasynUser, ASYN_TRACE_ERROR,
                         "Controller \"%s\", axis %d  => %s, line %d\nError "
                         "associated with key \"%s\" has been resolved.\n",
-                        key.controller_.c_str(), key.axisNo_, key.functionName_,
-                        key.line_, formattedKey);
+                        key.controller_.c_str(), key.axisNo_,
+                        key.functionName_.c_str(), key.line_, formattedKey);
                 }
                 map_[key] = 0;
             }
@@ -90,8 +88,8 @@ bool msgPrintControl::shouldBePrinted(char *portName, int axisNo,
                                       const char *functionName, int line,
                                       bool wantToPrint, asynUser *pasynUser,
                                       size_t maxRepetitions) {
-    msgPrintControlKey key =
-        msgPrintControlKey(portName, axisNo, functionName, __LINE__);
+    msgPrintControlKey key = msgPrintControlKey(portName, axisNo, functionName,
+                                                line, maxRepetitions);
     return shouldBePrinted(key, wantToPrint, pasynUser);
 }
 
@@ -105,7 +103,7 @@ void msgPrintControl::resetCount(msgPrintControlKey &key, asynUser *pasynUser) {
                           "Controller \"%s\", axis %d  => %s, line %d\nError "
                           "associated with key \"%s\" has been resolved.\n",
                           key.controller_.c_str(), key.axisNo_,
-                          key.functionName_, key.line_, formattedKey);
+                          key.functionName_.c_str(), key.line_, formattedKey);
             }
             map_[key] = 0;
         }

src/msgPrintControl.h

@@ -6,6 +6,7 @@
 #define DefaultMaxRepetitions 4
 
 #include <asynDriver.h>
+#include <macros.h>
 #include <string.h>
 #include <string>
 #include <unordered_map>
@@ -15,14 +16,14 @@
  * `msgPrintControl` on how to use this key.
  *
  */
-class msgPrintControlKey {
+class HIDDEN msgPrintControlKey {
   public:
     std::string controller_;
 
     // -1 indicates a non-axis specific message
     int axisNo_;
 
-    const char *functionName_;
+    std::string functionName_;
     int line_;
 
     /**
@@ -37,7 +38,7 @@ class msgPrintControlKey {
 
     bool operator==(const msgPrintControlKey &other) const {
         return axisNo_ == other.axisNo_ && line_ == other.line_ &&
-               strcmp(functionName_, other.functionName_) == 0 &&
+               functionName_ == other.functionName_ &&
                controller_ == other.controller_;
     }
 
@@ -54,7 +55,7 @@ template <> struct hash<msgPrintControlKey> {
         // Combine the hashes of the members (x and y)
         size_t h1 = std::hash<std::string>{}(obj.controller_);
         size_t h2 = hash<int>{}(obj.axisNo_);
-        size_t h3 = std::hash<const char *>{}(obj.functionName_);
+        size_t h3 = std::hash<std::string>{}(obj.functionName_);
         size_t h4 = hash<int>{}(obj.line_);
         // Combine the hashes (simple XOR and shifting technique)
         return h1 ^ (h2 << 1) ^ (h3 << 2) ^ (h4 << 3);
@@ -82,8 +83,14 @@ template <> struct hash<msgPrintControlKey> {
  * }
  * ```
  */
-class msgPrintControl {
+class HIDDEN msgPrintControl {
   public:
+    /**
+     * @brief Destroy the msgPrintControl object
+     *
+     */
+    ~msgPrintControl();
+
     /**
      * @brief Checks if the error message associated with "key" has been printed
      * more than `this->maxRepetitions_` times in a row. If yes, returns false,

src/sinqAxis.cpp

@@ -3,199 +3,54 @@
 #include "sinqAxis.h"
 #include "epicsExport.h"
 #include "iocsh.h"
+#include "msgPrintControl.h"
 #include "sinqController.h"
+#include <epicsTime.h>
 #include <errlog.h>
 #include <math.h>
 #include <unistd.h>
 
-// Generic fallback - if the compiler tries to compile this function, it fails.
-template <typename T>
-asynStatus setAxisParam(sinqAxis *axis, const char *indexName,
-                        int (sinqController::*func)(), T writeValue,
-                        const char *callerFunctionName, int lineNumber) {
-    static_assert(
-        sizeof(T) == 0,
-        "no specialization of setAxisParam exists for the given type");
-    return asynError;
-}
+#define getControllerMethod pController
 
-template <>
-asynStatus setAxisParam<int>(sinqAxis *axis, const char *indexName,
-                             int (sinqController::*func)(), int writeValue,
-                             const char *callerFunctionName, int lineNumber) {
-    int indexValue = (axis->pController()->*func)();
-    asynStatus status = axis->setIntegerParam(indexValue, writeValue);
-    if (status != asynSuccess) {
-        return axis->pController()->paramLibAccessFailed(
-            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
-    }
-    return asynSuccess;
-}
+struct sinqAxisImpl {
+    // Internal variables used in the movement timeout watchdog
+    time_t expectedArrivalTime;
+    time_t offsetMovTimeout;
 
-template <>
-asynStatus setAxisParam<bool>(sinqAxis *axis, const char *indexName,
-                              int (sinqController::*func)(), bool writeValue,
-                              const char *callerFunctionName, int lineNumber) {
-    return setAxisParam(axis, indexName, func, static_cast<int>(writeValue),
-                        callerFunctionName, lineNumber);
-}
+    double scaleMovTimeout;
+    bool watchdogMovActive;
+    // Store the motor target position for the movement time calculation
+    double targetPosition;
 
-template <>
-asynStatus
-setAxisParam<double>(sinqAxis *axis, const char *indexName,
-                     int (sinqController::*func)(), double writeValue,
-                     const char *callerFunctionName, int lineNumber) {
-    int indexValue = (axis->pController()->*func)();
-    asynStatus status = axis->setDoubleParam(indexValue, writeValue);
-    if (status != asynSuccess) {
-        return axis->pController()->paramLibAccessFailed(
-            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
-    }
-    return asynSuccess;
-}
+    bool wasMoving;
 
-template <>
-asynStatus setAxisParam<char *>(sinqAxis *axis, const char *indexName,
-                                int (sinqController::*func)(), char *writeValue,
-                                const char *callerFunctionName,
-                                int lineNumber) {
-    int indexValue = (axis->pController()->*func)();
-    asynStatus status = axis->setStringParam(indexValue, writeValue);
-    if (status != asynSuccess) {
-        return axis->pController()->paramLibAccessFailed(
-            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
-    }
-    return asynSuccess;
-}
-
-template <>
-asynStatus setAxisParam<const char *>(sinqAxis *axis, const char *indexName,
-                                      int (sinqController::*func)(),
-                                      const char *writeValue,
-                                      const char *callerFunctionName,
-                                      int lineNumber) {
-    int indexValue = (axis->pController()->*func)();
-    asynStatus status = axis->setStringParam(indexValue, writeValue);
-    if (status != asynSuccess) {
-        return axis->pController()->paramLibAccessFailed(
-            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
-    }
-    return asynSuccess;
-}
-
-// Generic fallback - if the compiler tries to compile this function, it fails.
-template <typename T>
-asynStatus getAxisParam(sinqAxis *axis, const char *indexName,
-                        int (sinqController::*func)(), T *readValue,
-                        const char *callerFunctionName, int lineNumber) {
-    static_assert(
-        sizeof(T) == 0,
-        "no specialization of getAxisParam exists for the given type");
-    return asynError;
-}
-
-template <>
-asynStatus getAxisParam<int>(sinqAxis *axis, const char *indexName,
-                             int (sinqController::*func)(), int *readValue,
-                             const char *callerFunctionName, int lineNumber) {
-    int indexValue = (axis->pController()->*func)();
-    asynStatus status = axis->pController()->getIntegerParam(
-        axis->axisNo(), indexValue, readValue);
-    if (status != asynSuccess) {
-        return axis->pController()->paramLibAccessFailed(
-            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
-    }
-    return asynSuccess;
-}
-
-template <>
-asynStatus getAxisParam<bool>(sinqAxis *axis, const char *indexName,
-                              int (sinqController::*func)(), bool *readValue,
-                              const char *callerFunctionName, int lineNumber) {
-    return getAxisParam(axis, indexName, func, (int *)readValue,
-                        callerFunctionName, lineNumber);
-}
-
-template <>
-asynStatus
-getAxisParam<double>(sinqAxis *axis, const char *indexName,
-                     int (sinqController::*func)(), double *readValue,
-                     const char *callerFunctionName, int lineNumber) {
-    int indexValue = (axis->pController()->*func)();
-    asynStatus status = axis->pController()->getDoubleParam(
-        axis->axisNo(), indexValue, readValue);
-    if (status != asynSuccess) {
-        return axis->pController()->paramLibAccessFailed(
-            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
-    }
-    return asynSuccess;
-}
-
-template <>
-asynStatus getAxisParam<char>(sinqAxis *axis, const char *indexName,
-                              int (sinqController::*func)(), char *readValue,
-                              const char *callerFunctionName, int lineNumber) {
-
-    int maxChars = 200;
-
-    int indexValue = (axis->pController()->*func)();
-    asynStatus status = axis->pController()->getStringParam(
-        axis->axisNo(), indexValue, maxChars, readValue);
-    if (status != asynSuccess) {
-        return axis->pController()->paramLibAccessFailed(
-            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
-    }
-    return asynSuccess;
-}
-
-template <size_t N>
-asynStatus getAxisParam(sinqAxis *axis, const char *indexName,
-                        int (sinqController::*func)(), char (&readValue)[N],
-                        const char *callerFunctionName, int lineNumber) {
-    // Decay the array to char*
-    return getAxisParam<char>(axis, indexName, func,
-                              static_cast<char *>(readValue),
-                              callerFunctionName, lineNumber);
-}
-
-template <>
-asynStatus
-getAxisParam<std::string>(sinqAxis *axis, const char *indexName,
-                          int (sinqController::*func)(), std::string *readValue,
-                          const char *callerFunctionName, int lineNumber) {
-    int indexValue = (axis->pController()->*func)();
-
-    // Convert the pointer to a reference, since getStringParam expects the
-    // latter.
-    std::string &rReadValue = *readValue;
-
-    asynStatus status = axis->pController()->getStringParam(
-        axis->axisNo(), indexValue, rReadValue);
-    if (status != asynSuccess) {
-        return axis->pController()->paramLibAccessFailed(
-            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
-    }
-    return asynSuccess;
-}
-
-// =============================================================================
+    /*
+    Store the time since the last poll
+    */
+    epicsTimeStamp lastPollTime;
+};
 
 sinqAxis::sinqAxis(class sinqController *pC, int axisNo)
     : asynMotorAxis((asynMotorController *)pC, axisNo), pC_(pC) {
     asynStatus status = asynSuccess;
 
-    watchdogMovActive_ = false;
-    scaleMovTimeout_ = 2.0;
-    offsetMovTimeout_ = 30;
-    targetPosition_ = 0.0;
-    wasMoving_ = false;
+    epicsTimeStamp lastPollTime;
+    epicsTimeGetCurrent(&lastPollTime);
 
-    epicsTimeGetCurrent(&lastPollTime_);
+    pSinqA_ = std::make_unique<sinqAxisImpl>(
+        (sinqAxisImpl){.expectedArrivalTime = 0,
+                       .offsetMovTimeout = 30,
+                       .scaleMovTimeout = 2.0,
+                       .watchdogMovActive = false,
+                       .targetPosition = 0.0,
+                       .wasMoving = false,
+                       .lastPollTime = lastPollTime});
 
-    // This check is also done in asynMotorAxis, but there the IOC continues
-    // running even though the configuration is incorrect. When failing this
-    // check, the IOC is stopped, since this is definitely a configuration
-    // problem.
+    /*
+    This check is also done in asynMotorAxis, but there the IOC continues
+    running even though the configuration is incorrect. When failing this check,
+    the IOC is stopped, since this is definitely a configuration problem.
+    */
     if ((axisNo < 0) || (axisNo >= pC->numAxes())) {
         asynPrint(pC_->pasynUser(), ASYN_TRACE_ERROR,
                   "Controller \"%s\", axis %d => %s, line %d:\nFATAL ERROR "
@@ -313,15 +168,10 @@ sinqAxis::sinqAxis(class sinqController *pC, int axisNo)
     }
 }
 
-asynStatus sinqAxis::poll(bool *moving) {
+sinqAxis::~sinqAxis() = default;
 
-    // Local variable declaration
-    asynStatus pl_status = asynSuccess;
-    asynStatus poll_status = asynSuccess;
-    int homing = 0;
+asynStatus sinqAxis::poll(bool *moving) {
     int adaptivePolling = 0;
-    char waitingMessage[pC_->MAXBUF_] = {0};
-    char newMessage[pC_->MAXBUF_] = {0};
 
     /*
     If adaptive polling is enabled:
@@ -344,23 +194,34 @@ asynStatus sinqAxis::poll(bool *moving) {
     Check if both adaptive polling is enabled and no forced fast polls are still
     required.
      */
-    if (adaptivePolling != 0 && pC_->outstandingForcedFastPolls() == 0) {
-        // Motor wasn't moving during the last poll
-        if (!wasMoving_) {
+    if (adaptivePolling != 0 && pC_->outstandingForcedFastPolls() == 0 &&
+        !pSinqA_->wasMoving) {
 
-            // Add the idle poll period
-            epicsTimeStamp earliestTimeNextPoll = lastPollTime_;
-            epicsTimeAddSeconds(&earliestTimeNextPoll, pC_->idlePollPeriod());
+        // Add the idle poll period
+        epicsTimeStamp earliestTimeNextPoll = pSinqA_->lastPollTime;
+        epicsTimeAddSeconds(&earliestTimeNextPoll, pC_->idlePollPeriod());
 
-            if (epicsTimeLessThanEqual(&earliestTimeNextPoll, &ts) == 0) {
-                *moving = false;
-                return asynSuccess;
-            }
+        if (epicsTimeLessThanEqual(&earliestTimeNextPoll, &ts) == 0) {
+            *moving = false;
+            return asynSuccess;
         }
     }
+    return forcedPoll(moving);
+}
+
+asynStatus sinqAxis::forcedPoll(bool *moving) {
+
+    // Local variable declaration
+    asynStatus pl_status = asynSuccess;
+    asynStatus poll_status = asynSuccess;
+    int homing = 0;
+    char waitingMessage[pC_->MAXBUF_] = {0};
+    char newMessage[pC_->MAXBUF_] = {0};
 
     // Update the start time of the last poll
-    lastPollTime_ = ts;
+    epicsTimeStamp ts;
+    epicsTimeGetCurrent(&ts);
+    pSinqA_->lastPollTime = ts;
 
     /*
     If the "motorMessageText" record currently contains an error message, it
@@ -411,7 +272,7 @@ asynStatus sinqAxis::poll(bool *moving) {
     assumed that the homing procedure is done.
      */
     getAxisParamChecked(this, motorStatusHome, &homing);
-    if (homing == 1 && !(*moving) && wasMoving_) {
+    if (homing == 1 && !(*moving) && pSinqA_->wasMoving) {
         setAxisParamChecked(this, motorStatusHome, false);
         setAxisParamChecked(this, motorStatusHomed, true);
         setAxisParamChecked(this, motorStatusAtHome, true);
@@ -419,12 +280,15 @@ asynStatus sinqAxis::poll(bool *moving) {
 
     // Update the wasMoving status
     if (pC_->outstandingForcedFastPolls() == 0) {
-        wasMoving_ = *moving;
+        pSinqA_->wasMoving = *moving;
     }
 
-    // Check and update the watchdog
-    if (checkMovTimeoutWatchdog(*moving) != asynSuccess) {
-        return asynError;
+    // Check and update the watchdog as well as the general poll status IF the
+    // poll did not fail already.
+    if (poll_status == asynSuccess) {
+        if (checkMovTimeoutWatchdog(*moving) != asynSuccess) {
+            poll_status = asynError;
+        }
     }
 
     // According to the function documentation of asynMotorAxis::poll, this
@@ -454,7 +318,12 @@ asynStatus sinqAxis::poll(bool *moving) {
     return poll_status;
 }
 
-asynStatus sinqAxis::doPoll(bool *moving) { return asynSuccess; }
+asynStatus sinqAxis::doPoll(bool *moving) {
+    // Suppress unused variable warning - this is just a default fallback
+    // function.
+    (void)moving;
+    return asynSuccess;
+}
 
 asynStatus sinqAxis::move(double position, int relative, double minVelocity,
                           double maxVelocity, double acceleration) {
@@ -467,7 +336,7 @@ asynStatus sinqAxis::move(double position, int relative, double minVelocity,
 
     // Store the target position internally
     getAxisParamChecked(this, motorRecResolution, &motorRecRes);
-    targetPosition_ = position * motorRecRes;
+    pSinqA_->targetPosition = position * motorRecRes;
 
     status = doMove(position, relative, minVelocity, maxVelocity, acceleration);
     if (status != asynSuccess) {
@@ -485,13 +354,20 @@ asynStatus sinqAxis::move(double position, int relative, double minVelocity,
     setAxisParamChecked(this, motorStatusAtHome, false);
 
     // Needed for adaptive polling
-    wasMoving_ = true;
+    pSinqA_->wasMoving = true;
 
     return pC_->callParamCallbacks();
 }
 
 asynStatus sinqAxis::doMove(double position, int relative, double minVelocity,
                             double maxVelocity, double acceleration) {
+    // Suppress unused variable warning - this is just a default fallback
+    // function.
+    (void)position;
+    (void)relative;
+    (void)minVelocity;
+    (void)maxVelocity;
+    (void)acceleration;
     return asynSuccess;
 }
 
@@ -507,7 +383,7 @@ asynStatus sinqAxis::home(double minVelocity, double maxVelocity,
         setAxisParamChecked(this, motorStatusHome, true);
         setAxisParamChecked(this, motorStatusHomed, false);
         setAxisParamChecked(this, motorStatusAtHome, false);
-        wasMoving_ = true;
+        pSinqA_->wasMoving = true;
 
         status = assertConnected();
         if (status != asynSuccess) {
@@ -535,6 +411,12 @@ asynStatus sinqAxis::home(double minVelocity, double maxVelocity,
 
 asynStatus sinqAxis::doHome(double minVelocity, double maxVelocity,
                             double acceleration, int forwards) {
+    // Suppress unused variable warning - this is just a default fallback
+    // function.
+    (void)minVelocity;
+    (void)maxVelocity;
+    (void)acceleration;
+    (void)forwards;
     return asynSuccess;
 }
 
@@ -556,7 +438,12 @@ asynStatus sinqAxis::reset() {
 
 asynStatus sinqAxis::doReset() { return asynError; }
 
-asynStatus sinqAxis::enable(bool on) { return asynSuccess; }
+asynStatus sinqAxis::enable(bool on) {
+    // Suppress unused variable warning - this is just a default fallback
+    // function.
+    (void)on;
+    return asynSuccess;
+}
 
 asynStatus sinqAxis::motorPosition(double *motorPos) {
     asynStatus status = asynSuccess;
@@ -618,9 +505,9 @@ asynStatus sinqAxis::setVeloFields(double velo, double vbas, double vmax) {
                       "vmax=%lf.\n",
                       pC_->portName, axisNo_, __PRETTY_FUNCTION__, __LINE__,
                       vbas, vmax);
-            setAxisParamChecked(
-                this, motorMessageText,
-                "Lower speed limit must not be smaller than upper speed limit");
+            setAxisParamChecked(this, motorMessageText,
+                                "Lower speed limit must not be smaller than "
+                                "upper speed limit. Please call the support.");
             return asynError;
         }
         if (velo < vbas || velo > vmax) {
@@ -631,8 +518,10 @@ asynStatus sinqAxis::setVeloFields(double velo, double vbas, double vmax) {
                       pC_->portName, axisNo_, __PRETTY_FUNCTION__, __LINE__,
                       velo, vbas, vmax);
 
-            setAxisParamChecked(this, motorMessageText,
-                                "Speed is not inside limits");
+            setAxisParamChecked(
+                this, motorMessageText,
+                "Speed is not inside limits. Set a new valid speed and try "
+                "to move the motor. Otherwise, please call the support.");
             return asynError;
         }
 
@@ -681,7 +570,7 @@ asynStatus sinqAxis::startMovTimeoutWatchdog() {
         time_t timeAccel = 0;
 
         // Activate the watchdog
-        watchdogMovActive_ = true;
+        pSinqA_->watchdogMovActive = true;
 
         /*
         NOTE: This function must not be called in the constructor (e.g. in order
@@ -717,8 +606,9 @@ asynStatus sinqAxis::startMovTimeoutWatchdog() {
             motorVelocity = motorVelocityRec * motorRecRes;
             if (pl_status == asynSuccess) {
 
-                timeContSpeed = std::ceil(
-                    std::fabs(targetPosition_ - motorPos) / motorVelocity);
+                timeContSpeed =
+                    std::ceil(std::fabs(pSinqA_->targetPosition - motorPos) /
+                              motorVelocity);
             }
         }
 
@@ -734,11 +624,11 @@ asynStatus sinqAxis::startMovTimeoutWatchdog() {
         }
 
         // Calculate the expected arrival time
-        expectedArrivalTime_ =
-            time(NULL) + offsetMovTimeout_ +
-            scaleMovTimeout_ * (timeContSpeed + 2 * timeAccel);
+        pSinqA_->expectedArrivalTime =
+            time(NULL) + pSinqA_->offsetMovTimeout +
+            pSinqA_->scaleMovTimeout * (timeContSpeed + 2 * timeAccel);
     } else {
-        watchdogMovActive_ = false;
+        pSinqA_->watchdogMovActive = false;
     }
     return asynSuccess;
 }
@@ -749,8 +639,8 @@ asynStatus sinqAxis::checkMovTimeoutWatchdog(bool moving) {
     getAxisParamChecked(this, motorEnableMovWatchdog, &enableMovWatchdog);
 
     // Not moving or watchdog not active / enabled
-    if (enableMovWatchdog == 0 || !moving || !watchdogMovActive_) {
-        watchdogMovActive_ = false;
+    if (enableMovWatchdog == 0 || !moving || !pSinqA_->watchdogMovActive) {
+        pSinqA_->watchdogMovActive = false;
         return asynSuccess;
     }
 
@@ -760,7 +650,7 @@ asynStatus sinqAxis::checkMovTimeoutWatchdog(bool moving) {
                                                 __PRETTY_FUNCTION__, __LINE__);
 
     // Check if the expected time of arrival has been exceeded.
-    if (expectedArrivalTime_ < time(NULL)) {
+    if (pSinqA_->expectedArrivalTime < time(NULL)) {
         // Check the watchdog
         if (pC_->getMsgPrintControl().shouldBePrinted(key, true,
                                                       pC_->pasynUser())) {
@@ -768,7 +658,7 @@ asynStatus sinqAxis::checkMovTimeoutWatchdog(bool moving) {
                       "Controller \"%s\", axis %d => %s, line %d:\nExceeded "
                       "expected arrival time %ld (current time is %ld).\n",
                       pC_->portName, axisNo_, __PRETTY_FUNCTION__, __LINE__,
-                      expectedArrivalTime_, time(NULL));
+                      pSinqA_->expectedArrivalTime, time(NULL));
         }
 
         setAxisParamChecked(
@@ -783,6 +673,26 @@ asynStatus sinqAxis::checkMovTimeoutWatchdog(bool moving) {
     return asynSuccess;
 }
 
+asynStatus sinqAxis::setOffsetMovTimeout(time_t offsetMovTimeout) {
+    pSinqA_->offsetMovTimeout = offsetMovTimeout;
+    return asynSuccess;
+}
+
+asynStatus sinqAxis::setScaleMovTimeout(time_t scaleMovTimeout) {
+    pSinqA_->scaleMovTimeout = scaleMovTimeout;
+    return asynSuccess;
+}
+
+bool sinqAxis::wasMoving() { return pSinqA_->wasMoving; }
+
+void sinqAxis::setWasMoving(bool wasMoving) { pSinqA_->wasMoving = wasMoving; }
+
+double sinqAxis::targetPosition() { return pSinqA_->targetPosition; }
+
+void sinqAxis::setTargetPosition(double targetPosition) {
+    pSinqA_->targetPosition = targetPosition;
+}
+
 // =============================================================================
 // IOC shell functions
 extern "C" {
@@ -824,8 +734,9 @@ static const iocshArg setWatchdogEnabledArg2 = {
     "Enabling / disabling the watchdog", iocshArgInt};
 static const iocshArg *const setWatchdogEnabledArgs[] = {
     &setWatchdogEnabledArg0, &setWatchdogEnabledArg1, &setWatchdogEnabledArg2};
-static const iocshFuncDef setWatchdogEnabledDef = {"setWatchdogEnabled", 3,
-                                                   setWatchdogEnabledArgs};
+static const iocshFuncDef setWatchdogEnabledDef = {
+    "setWatchdogEnabled", 3, setWatchdogEnabledArgs,
+    "Set to 0 to disable the watchdog and to any other value to enable it."};
 
 static void setWatchdogEnabledCallFunc(const iocshArgBuf *args) {
     setWatchdogEnabled(args[0].sval, args[1].ival, args[2].ival);
@@ -871,8 +782,9 @@ static const iocshArg setOffsetMovTimeoutArg2 = {"Offset timeout for movement",
 static const iocshArg *const setOffsetMovTimeoutArgs[] = {
     &setOffsetMovTimeoutArg0, &setOffsetMovTimeoutArg1,
     &setOffsetMovTimeoutArg2};
-static const iocshFuncDef setOffsetMovTimeoutDef = {"setOffsetMovTimeout", 3,
-                                                    setOffsetMovTimeoutArgs};
+static const iocshFuncDef setOffsetMovTimeoutDef = {
+    "setOffsetMovTimeout", 3, setOffsetMovTimeoutArgs,
+    "Specify an offset (in seconds) for the movement timeout watchdog"};
 
 static void setOffsetMovTimeoutCallFunc(const iocshArgBuf *args) {
     setOffsetMovTimeout(args[0].sval, args[1].ival, args[2].dval);
@@ -918,8 +830,9 @@ static const iocshArg setScaleMovTimeoutArg2 = {
     "Multiplier for calculated move time", iocshArgDouble};
 static const iocshArg *const setScaleMovTimeoutArgs[] = {
     &setScaleMovTimeoutArg0, &setScaleMovTimeoutArg1, &setScaleMovTimeoutArg2};
-static const iocshFuncDef setScaleMovTimeoutDef = {"setScaleMovTimeout", 3,
-                                                   setScaleMovTimeoutArgs};
+static const iocshFuncDef setScaleMovTimeoutDef = {
+    "setScaleMovTimeout", 3, setScaleMovTimeoutArgs,
+    "Set a scaling factor for the maximum expected movement time."};
 
 static void setScaleMovTimeoutCallFunc(const iocshArgBuf *args) {
     setScaleMovTimeout(args[0].sval, args[1].ival, args[2].dval);

src/sinqAxis.h

@@ -9,10 +9,13 @@ Stefan Mathis, November 2024
 #ifndef sinqAxis_H
 #define sinqAxis_H
 #include "asynMotorAxis.h"
-#include <epicsTime.h>
+#include <macros.h>
+#include <memory>
 #include <type_traits>
 
-class epicsShareClass sinqAxis : public asynMotorAxis {
+struct sinqAxisImpl;
+
+class HIDDEN sinqAxis : public asynMotorAxis {
   public:
     /**
      * @brief Construct a new sinqAxis object
@@ -22,6 +25,34 @@ class epicsShareClass sinqAxis : public asynMotorAxis {
      */
     sinqAxis(class sinqController *pC_, int axisNo);
 
+    /**
+     * @brief Destroy the sinqAxis object
+     *
+     * This destructor is necessary in order to use the PIMPL idiom.
+     */
+    ~sinqAxis();
+
+    /**
+     * @brief Check if a poll should be performed. If yes, call `forcedPoll`.
+     *
+    This is a wrapper around `forcedPoll` which does the following checks before
+    calling `forcedPoll`:
+    - Are there any outstanding fast polls (method `outstandingForcedFastPolls`
+    of the controller returns a value greater zero)?
+    - Was the axis moving last time its status was polled?
+    - Is adaptive polling disabled?
+    - Did an idle period pass since the last poll?
+    If all of these conditions are false, no poll is performed. Otherwise, the
+    `forcedPoll` method is called. This method should not be called in the
+    driver code itself if a poll is needed - use `forcedPoll` instead!
+    *
+    * @param moving              Forwarded to `forcedPoll` or set to false
+    (depending on whether `forcedPoll was called`).
+    * @return asynStatus         Forward the status of `forcedPoll` or set to
+    asynSuccess (depending on whether `forcedPoll was called`).
+     */
+    virtual asynStatus poll(bool *moving);
+
     /**
      * @brief Perform some standardized operations before and after the concrete
     `doPoll` implementation.
@@ -37,7 +68,7 @@ class epicsShareClass sinqAxis : public asynMotorAxis {
 
     - The flags `motorStatusHome_`, `motorStatusHomed_` and
     `motorStatusAtHome_` are set to their idle values (0, 1 and 1 respectively)
-    in the `poll()` method once the homing procedure is finished. See the
+    in the `forcedPoll()` method once the homing procedure is finished. See the
     documentation of the `home()` method for more details.
 
     - Run `callParamCallbacks()`
@@ -47,9 +78,9 @@ class epicsShareClass sinqAxis : public asynMotorAxis {
      * @param moving              Forwarded to `doPoll`.
      * @return asynStatus         Forward the status of `doPoll`, unless one of
     the parameter library operation fails (in that case, returns the status of
-    the failed operation.
+    the failed operation).
      */
-    virtual asynStatus poll(bool *moving);
+    asynStatus forcedPoll(bool *moving);
 
     /**
      * @brief Implementation of the "proper", device-specific poll method. This
@@ -133,7 +164,7 @@ class epicsShareClass sinqAxis : public asynMotorAxis {
      *
      * The flags `motorStatusHome_`, `motorStatusHomed_` and
     `motorStatusAtHome_` are set to their idle values (0, 1 and 1 respectively)
-    in the `poll()` method once the homing procedure is finished.
+    in the `forcedPoll())` method once the homing procedure is finished.
      *
      * @param minVelocity         Forwarded to `doHome`.
      * @param maxVelocity         Forwarded to `doHome`.
@@ -297,10 +328,7 @@ class epicsShareClass sinqAxis : public asynMotorAxis {
      * @param offsetMovTimeout    Offset (in seconds)
      * @return asynStatus
      */
-    virtual asynStatus setOffsetMovTimeout(time_t offsetMovTimeout) {
-        offsetMovTimeout_ = offsetMovTimeout;
-        return asynSuccess;
-    }
+    virtual asynStatus setOffsetMovTimeout(time_t offsetMovTimeout);
 
     /**
      * @brief Set the scaleMovTimeout. Also available in the IOC shell
@@ -311,10 +339,7 @@ class epicsShareClass sinqAxis : public asynMotorAxis {
      * @param scaleMovTimeout     Scaling factor (in seconds)
      * @return asynStatus
      */
-    virtual asynStatus setScaleMovTimeout(time_t scaleMovTimeout) {
-        scaleMovTimeout_ = scaleMovTimeout;
-        return asynSuccess;
-    }
+    virtual asynStatus setScaleMovTimeout(time_t scaleMovTimeout);
 
     /**
      * @brief Return the axis number of this axis
@@ -362,34 +387,139 @@ class epicsShareClass sinqAxis : public asynMotorAxis {
     asynStatus assertConnected();
 
     /**
-     * @brief Return a pointer to the axis controller
+     * @brief Return a pointer to the axis controller.
+     *
+     * This function should be overriden in derived classes using the `override`
+     * keyword so the macros `getAxisParamChecked` and `setAxisParamChecked`
+     * work correctly:
+     *
+     * ```
+     * class mySpecialAxis : public sinqAxis {
+        public:
+            mySpecialController* getControllerMethod() override {
+                return mySpecialControllerPtr;
+            }
+        };
+     * ```
      */
-    sinqController *pController() { return pC_; };
+    virtual sinqController *pController() { return pC_; };
 
-  protected:
-    // Internal variables used in the movement timeout watchdog
-    time_t expectedArrivalTime_;
-    time_t offsetMovTimeout_;
+    /**
+     * @brief Returns true, if the axis was moving in the last poll cycle, and
+     * false otherwise.
+     *
+     * @return true
+     * @return false
+     */
+    bool wasMoving();
 
-    double scaleMovTimeout_;
-    bool watchdogMovActive_;
-    // Store the motor target position for the movement time calculation
-    double targetPosition_;
+    /**
+     * @brief Override the wasMoving flag (normally, it is automatically updated
+     * during each poll).
+     *
+     */
+    void setWasMoving(bool wasMoving);
 
-    bool wasMoving_;
+    /**
+     * @brief Read out the last received target position in engineering units.
+     *
+     * @return double
+     */
+    double targetPosition();
 
-    /*
-    Store the time since the last poll
-    */
-    epicsTimeStamp lastPollTime_;
+    /**
+     * @brief Override the targetPosition value (normally, it is automatically
+     * updated at every call of the move() method).
+     *
+     */
+    void setTargetPosition(double targetPosition);
 
   private:
+    std::unique_ptr<sinqAxisImpl> pSinqA_;
     sinqController *pC_;
 };
 
 // =============================================================================
 // Helper functions and definitions for the macro setAxisParamChecked
 
+template <typename T> struct TypeTag {};
+
+// Generic fallback - if the compiler tries to compile this function, it fails.
+template <typename A, typename C, typename T>
+asynStatus setAxisParamImpl(A *axis, C *controller, const char *indexName,
+                            int (C::*func)(), T writeValue,
+                            const char *callerFunctionName, int lineNumber,
+                            TypeTag<void>) {
+    static_assert(sizeof(T) == 0, "Unsupported type for setAxisParamImpl");
+    return asynError;
+}
+
+template <typename A, typename C>
+asynStatus setAxisParamImpl(A *axis, C *controller, const char *indexName,
+                            int (C::*func)(), int writeValue,
+                            const char *callerFunctionName, int lineNumber,
+                            TypeTag<int>) {
+    int indexValue = (controller->*func)();
+    asynStatus status = axis->setIntegerParam(indexValue, writeValue);
+    if (status != asynSuccess) {
+        return controller->paramLibAccessFailed(
+            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
+    }
+    return asynSuccess;
+}
+
+template <typename A, typename C>
+asynStatus setAxisParamImpl(A *axis, C *controller, const char *indexName,
+                            int (C::*func)(), bool writeValue,
+                            const char *callerFunctionName, int lineNumber,
+                            TypeTag<bool>) {
+    return setAxisParamImpl(axis, controller, indexName, func,
+                            static_cast<int>(writeValue), callerFunctionName,
+                            lineNumber, TypeTag<int>{});
+}
+
+template <typename A, typename C>
+asynStatus setAxisParamImpl(A *axis, C *controller, const char *indexName,
+                            int (C::*func)(), double writeValue,
+                            const char *callerFunctionName, int lineNumber,
+                            TypeTag<double>) {
+    int indexValue = (controller->*func)();
+    asynStatus status = axis->setDoubleParam(indexValue, writeValue);
+    if (status != asynSuccess) {
+        return controller->paramLibAccessFailed(
+            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
+    }
+    return asynSuccess;
+}
+
+template <typename A, typename C>
+asynStatus setAxisParamImpl(A *axis, C *controller, const char *indexName,
+                            int (C::*func)(), char *writeValue,
+                            const char *callerFunctionName, int lineNumber,
+                            TypeTag<char *>) {
+    int indexValue = (controller->*func)();
+    asynStatus status = axis->setStringParam(indexValue, writeValue);
+    if (status != asynSuccess) {
+        return controller->paramLibAccessFailed(
+            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
+    }
+    return asynSuccess;
+}
+
+template <typename A, typename C>
+asynStatus setAxisParamImpl(A *axis, C *controller, const char *indexName,
+                            int (C::*func)(), const char *writeValue,
+                            const char *callerFunctionName, int lineNumber,
+                            TypeTag<const char *>) {
+    int indexValue = (controller->*func)();
+    asynStatus status = axis->setStringParam(indexValue, writeValue);
+    if (status != asynSuccess) {
+        return controller->paramLibAccessFailed(
+            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
+    }
+    return asynSuccess;
+}
+
 /**
  * @brief Helper function to set an integer / double / string parameter for an
  * axis in the paramLib
@@ -397,8 +527,11 @@ class epicsShareClass sinqAxis : public asynMotorAxis {
  * This function should not be used directly, but rather through its macro
  * variant `setAxisParamChecked`.
  *
+ * @tparam A
+ * @tparam C
  * @tparam T
  * @param axis
+ * @param controller
  * @param indexName
  * @param func
  * @param writeValue
@@ -406,10 +539,13 @@ class epicsShareClass sinqAxis : public asynMotorAxis {
  * @param lineNumber
  * @return asynStatus
  */
-template <typename T>
-asynStatus setAxisParam(sinqAxis *axis, const char *indexName,
-                        int (sinqController::*func)(), T writeValue,
-                        const char *callerFunctionName, int lineNumber);
+template <typename A, typename C, typename T>
+asynStatus setAxisParam(A *axis, C *controller, const char *indexName,
+                        int (C::*func)(), T writeValue,
+                        const char *callerFunctionName, int lineNumber) {
+    return setAxisParamImpl(axis, controller, indexName, func, writeValue,
+                            callerFunctionName, lineNumber, TypeTag<T>{});
+}
 
 /**
  * @brief Macro to set an paramLib parameter and error checking the return value
@@ -425,10 +561,10 @@ asynStatus setAxisParam(sinqAxis *axis, const char *indexName,
  * expands into the following code:
  * ```
  * {
- * int indexValue = axis->pController()->motorStatusProblem_();
+ * int indexValue = controller->motorStatusProblem_();
  * asynStatus status = axis->setIntegerParam(indexValue, writeValue);
  * if (status != asynSuccess) {
- *     return axis->pController()->paramLibAccessFailed(
+ *     return controller->paramLibAccessFailed(
  *         status, "motorStatusProblem_", axis->axisNo(), __PRETTY_FUNCTION__,
  *         __LINE__);
  * }
@@ -437,23 +573,116 @@ asynStatus setAxisParam(sinqAxis *axis, const char *indexName,
  * ```
  * =============================================================================
  */
-#define setAxisParamChecked(axis, indexGetterFunction, writeValue)             \
-    {                                                                          \
-        asynStatus setStatus = setAxisParam(                                   \
-            axis, #indexGetterFunction,                                        \
-            &std::remove_pointer<                                              \
-                decltype(axis->pController())>::type::indexGetterFunction,     \
-            writeValue, __PRETTY_FUNCTION__, __LINE__);                        \
-        if (setStatus != asynSuccess) {                                        \
+#define setAxisParamChecked(axis, indexSetterFunction, writeValue)             \
+    do {                                                                       \
+        auto *ctrlPtr = (axis)->pController();                                 \
+        using ControllerType =                                                 \
+            typename std::remove_pointer<decltype(ctrlPtr)>::type;             \
+        asynStatus setStatus =                                                 \
+            setAxisParam(axis, ctrlPtr, #indexSetterFunction,                  \
+                         static_cast<int (ControllerType::*)()>(               \
+                             &ControllerType::indexSetterFunction),            \
+                         writeValue, __PRETTY_FUNCTION__, __LINE__);           \
+        if (setStatus != asynSuccess)                                          \
             return setStatus;                                                  \
-        }                                                                      \
-    }
+    } while (0)
 
 // =============================================================================
 // Helper functions and definitions for the macro getAxisParamChecked
 
+// Generic fallback - if the compiler tries to compile this function, it fails.
+template <typename A, typename C, typename T>
+asynStatus getAxisParamImpl(A *axis, C *controller, const char *indexName,
+                            int (C::*func)(), T *readValue,
+                            const char *callerFunctionName, int lineNumber,
+                            size_t msgSize, TypeTag<void>) {
+    static_assert(
+        sizeof(T) == 0,
+        "no specialization of getAxisParam exists for the given type");
+    return asynError;
+}
+
+template <typename A, typename C>
+asynStatus getAxisParamImpl(A *axis, C *controller, const char *indexName,
+                            int (C::*func)(), int *readValue,
+                            const char *callerFunctionName, int lineNumber,
+                            size_t /*msgSize*/, TypeTag<int>) {
+    int indexValue = (controller->*func)();
+    asynStatus status =
+        controller->getIntegerParam(axis->axisNo(), indexValue, readValue);
+    if (status != asynSuccess) {
+        return controller->paramLibAccessFailed(
+            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
+    }
+    return asynSuccess;
+}
+
+template <typename A, typename C>
+asynStatus getAxisParamImpl(A *axis, C *controller, const char *indexName,
+                            int (C::*func)(), bool *readValue,
+                            const char *callerFunctionName, int lineNumber,
+                            size_t msgSize, TypeTag<bool>) {
+    int readValueInt = 0;
+    asynStatus status = getAxisParamImpl(axis, controller, indexName, func,
+                                         &readValueInt, callerFunctionName,
+                                         lineNumber, msgSize, TypeTag<int>{});
+    *readValue = readValueInt != 0;
+    return status;
+}
+
+template <typename A, typename C>
+asynStatus getAxisParamImpl(A *axis, C *controller, const char *indexName,
+                            int (C::*func)(), double *readValue,
+                            const char *callerFunctionName, int lineNumber,
+                            size_t /*msgSize*/, TypeTag<double>) {
+    int indexValue = (controller->*func)();
+    asynStatus status =
+        controller->getDoubleParam(axis->axisNo(), indexValue, readValue);
+    if (status != asynSuccess) {
+        return controller->paramLibAccessFailed(
+            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
+    }
+    return asynSuccess;
+}
+
+template <typename A, typename C>
+asynStatus getAxisParamImpl(A *axis, C *controller, const char *indexName,
+                            int (C::*func)(), char *readValue,
+                            const char *callerFunctionName, int lineNumber,
+                            size_t msgSize, TypeTag<char>) {
+
+    int indexValue = (controller->*func)();
+    asynStatus status = controller->getStringParam(axis->axisNo(), indexValue,
+                                                   msgSize, readValue);
+    if (status != asynSuccess) {
+        return controller->paramLibAccessFailed(
+            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
+    }
+    return asynSuccess;
+}
+
+template <typename A, typename C>
+asynStatus getAxisParamImpl(A *axis, C *controller, const char *indexName,
+                            int (C::*func)(), std::string *readValue,
+                            const char *callerFunctionName, int lineNumber,
+                            size_t /*msgSize*/, TypeTag<std::string>) {
+    int indexValue = (controller->*func)();
+
+    // Convert the pointer to a reference, since getStringParam expects the
+    // latter.
+    std::string &rReadValue = *readValue;
+
+    asynStatus status =
+        controller->getStringParam(axis->axisNo(), indexValue, rReadValue);
+    if (status != asynSuccess) {
+        return controller->paramLibAccessFailed(
+            status, indexName, axis->axisNo(), callerFunctionName, lineNumber);
+    }
+    return asynSuccess;
+}
+
 /**
- * @brief Helper function to set an integer / double / string parameter for an
+ * @brief Helper function to get an integer / double / string parameter for an
  * axis in the paramLib
  *
  * This function should not be used directly, but rather through its macro
@@ -461,6 +690,7 @@ asynStatus setAxisParam(sinqAxis *axis, const char *indexName,
  *
  * @tparam T
  * @param axis
+ * @param controller
  * @param indexName
  * @param func
  * @param readValue
@@ -471,17 +701,48 @@ asynStatus setAxisParam(sinqAxis *axis, const char *indexName,
  * to.
  * @return asynStatus
  */
-template <typename T>
-asynStatus getAxisParam(sinqAxis *axis, const char *indexName,
-                        int (sinqController::*func)(), T *readValue,
-                        const char *callerFunctionName, int lineNumber);
+template <typename A, typename C, typename T>
+asynStatus getAxisParam(A *axis, C *controller, const char *indexName,
+                        int (C::*func)(), T *readValue,
+                        const char *callerFunctionName, int lineNumber) {
+    return getAxisParamImpl(axis, controller, indexName, func, readValue,
+                            callerFunctionName, lineNumber,
+                            controller->msgSize(), TypeTag<T>{});
+}
+
+/**
+ * @brief Helper function to get a string parameter for an
+ * axis in the paramLib into a char array
+ *
+ * This function should not be used directly, but rather through its macro
+ * variant `getAxisParamChecked`. It is a specialized variant of the general
+ * getAxisParam defined above for char arrays.
+ *
+ * @tparam A
+ * @tparam C
+ * @tparam N
+ * @param axis
+ * @param controller
+ * @param indexName
+ * @param func
+ * @param callerFunctionName
+ * @param lineNumber
+ * @return asynStatus
+ */
+template <typename A, typename C, size_t N>
+asynStatus getAxisParam(A *axis, C *controller, const char *indexName,
+                        int (C::*func)(), char (*readValue)[N],
+                        const char *callerFunctionName, int lineNumber) {
+    return getAxisParamImpl(axis, controller, indexName, func, *readValue,
+                            callerFunctionName, lineNumber, N, TypeTag<char>{});
+}
 
 /**
  * @brief Macro to get an paramLib parameter and error checking the return value
  *
  * This macro is a wrapper around `getIntegerParam` / `getDoubleParam` /
  * `getStringParam` which checks if the operation was successfull. If it wasn't,
- * it returns by calling the paramLibAccessFailed function.
+ * it returns by calling the paramLibAccessFailed function. In order
  *
  * For example, the following input:
  * ```
@@ -490,10 +751,10 @@ asynStatus getAxisParam(sinqAxis *axis, const char *indexName,
  * expands into the following code:
  * ```
  * {
- * int indexValue = axis->pController()->motorStatusProblem_();
- * asynStatus status = axis->pController()->getIntegerParam(axis->axisNo(),
+ * int indexValue = controller->motorStatusProblem_();
+ * asynStatus status = controller->getIntegerParam(axis->axisNo(),
  * indexValue, readValue); if (status != asynSuccess) { return
- * axis->pController()->paramLibAccessFailed( status, "motorStatusProblem_",
+ * controller->paramLibAccessFailed( status, "motorStatusProblem_",
  * axis->axisNo(), __PRETTY_FUNCTION__,
  *         __LINE__);
  * }
@@ -503,15 +764,17 @@ asynStatus getAxisParam(sinqAxis *axis, const char *indexName,
  * =============================================================================
  */
 #define getAxisParamChecked(axis, indexGetterFunction, readValue)              \
-    {                                                                          \
-        asynStatus getStatus = getAxisParam(                                   \
-            axis, #indexGetterFunction,                                        \
-            &std::remove_pointer<                                              \
-                decltype(axis->pController())>::type::indexGetterFunction,     \
-            readValue, __PRETTY_FUNCTION__, __LINE__);                         \
-        if (getStatus != asynSuccess) {                                        \
+    do {                                                                       \
+        auto *ctrlPtr = (axis)->pController();                                 \
+        using ControllerType =                                                 \
+            typename std::remove_pointer<decltype(ctrlPtr)>::type;             \
+        asynStatus getStatus =                                                 \
+            getAxisParam(axis, ctrlPtr, #indexGetterFunction,                  \
+                         static_cast<int (ControllerType::*)()>(               \
+                             &ControllerType::indexGetterFunction),            \
+                         readValue, __PRETTY_FUNCTION__, __LINE__);            \
+        if (getStatus != asynSuccess)                                          \
             return getStatus;                                                  \
-        }                                                                      \
-    }
+    } while (0)
 
-#endif
+#endif

src/sinqController.cpp

@@ -5,8 +5,12 @@
 #include "asynOctetSyncIO.h"
 #include "epicsExport.h"
 #include "iocsh.h"
+#include "msgPrintControl.h"
 #include "sinqAxis.h"
+#include <deque>
 #include <errlog.h>
+#include <initHooks.h>
+#include <unordered_map>
 #include <vector>
 
 /*
@@ -34,6 +38,66 @@ void sinqController::epicsInithookFunction(initHookState iState) {
     }
 }
 
+struct sinqControllerImpl {
+    // Number of fast polls which still need to be performed before adaptive
+    // polling is active again.
+    int outstandingForcedFastPolls;
+
+    // Number of polls forced by wakeupPoller which are still
+
+    // Pointer to the port user which is specified by the char array
+    // `ipPortConfigName` in the constructor
+    asynUser *pasynOctetSyncIOipPort;
+
+    // Message print control
+    msgPrintControl msgPrintC;
+
+    // Internal variables used in the communication timeout frequency watchdog
+    time_t comTimeoutWindow;  // Size of the time window
+    size_t maxNumberTimeouts; // Maximum acceptable number of events within the
+                              // time window
+
+    // Deque holding the timestamps of the individual events
+    std::deque<time_t> timeoutEvents;
+
+    // Communicate a timeout to the user after it has happened this many times
+    // in a row
+    int maxSubsequentTimeouts;
+    bool maxSubsequentTimeoutsExceeded;
+
+    /*
+    These integers are indices to paramLib entries and are populated when the
+    parameters are created. See the documentation in db/sinqMotor.db.
+    */
+    int motorMessageText;
+    int motorReset;
+    int motorEnable;
+    int motorEnableRBV;
+    int motorCanDisable;
+    int motorEnableMovWatchdog;
+    int motorCanSetSpeed;
+    int motorLimitsOffset;
+    int motorForceStop;
+    int motorConnected;
+    /*
+    These parameters are here to write values from the hardware to the EPICS
+    motor record. Using motorHighLimit_ / motorLowLimit_ does not work:
+    https://epics.anl.gov/tech-talk/2023/msg00576.php. Therefore, some
+    additional records are introduced which read from these parameters and write
+    into the motor record.
+    */
+    int motorVeloFromDriver;
+    int motorVbasFromDriver;
+    int motorVmaxFromDriver;
+    int motorAcclFromDriver;
+    int motorHighLimitFromDriver;
+    int motorLowLimitFromDriver;
+    int motorPositionDeadband;
+    int adaptivePolling;
+    int encoderType;
+};
+#define NUM_SINQMOTOR_DRIVER_PARAMS 18
+
 sinqController::sinqController(const char *portName,
                                const char *ipPortConfigName, int numAxes,
                                double movingPollPeriod, double idlePollPeriod,
@@ -48,29 +112,42 @@ sinqController::sinqController(const char *portName,
           0, // No additional interfaces beyond those in base class
           0, // No additional callback interfaces beyond those in base class
           ASYN_CANBLOCK | ASYN_MULTIDEVICE,
-          1,     // autoconnect
-          0, 0), // Default priority and stack size
-      msgPrintControl_() {
+          1,    // autoconnect
+          0, 0) // Default priority and stack size
+{
 
     asynStatus status = asynSuccess;
 
-    // Handle to the asynUser of the IP port asyn driver
-    pasynOctetSyncIOipPort_ = nullptr;
-
-    // Initial values for the average timeout mechanism, can be overwritten
-    // later by a FFI function
-    comTimeoutWindow_ = 3600; // seconds
-
-    // Number of timeouts which may occur before an error is forwarded to the
-    // user
-    maxNumberTimeouts_ = 60;
-
-    // Queue holding the timeout event timestamps
-    timeoutEvents_ = {};
-
-    // Inform the user after 10 timeouts in a row (default value)
-    maxSubsequentTimeouts_ = 10;
-    maxSubsequentTimeoutsExceeded_ = false;
+    // The paramLib indices are populated with the calls to createParam
+    pSinqC_ = std::make_unique<sinqControllerImpl>((sinqControllerImpl){
+        .outstandingForcedFastPolls = 0,
+        .pasynOctetSyncIOipPort = nullptr,
+        .msgPrintC = msgPrintControl(),
+        .comTimeoutWindow = 3600,
+        .maxNumberTimeouts = 60,
+        .timeoutEvents = {},
+        .maxSubsequentTimeouts = 10,
+        .maxSubsequentTimeoutsExceeded = false,
+        .motorMessageText = 0,
+        .motorReset = 0,
+        .motorEnable = 0,
+        .motorEnableRBV = 0,
+        .motorCanDisable = 0,
+        .motorEnableMovWatchdog = 0,
+        .motorCanSetSpeed = 0,
+        .motorLimitsOffset = 0,
+        .motorForceStop = 0,
+        .motorConnected = 0,
+        .motorVeloFromDriver = 0,
+        .motorVbasFromDriver = 0,
+        .motorVmaxFromDriver = 0,
+        .motorAcclFromDriver = 0,
+        .motorHighLimitFromDriver = 0,
+        .motorLowLimitFromDriver = 0,
+        .motorPositionDeadband = 0,
+        .adaptivePolling = 0,
+        .encoderType = 0,
+    });
 
     // Store the poll period information. The poller itself will be started
     // later (after the IOC is running in epicsInithookFunction)
@@ -83,9 +160,9 @@ sinqController::sinqController(const char *portName,
     We try to connect to the port via the port name provided by the constructor.
     If this fails, the function is terminated via exit.
     */
-    pasynOctetSyncIO->connect(ipPortConfigName, 0, &pasynOctetSyncIOipPort_,
-                              NULL);
-    if (status != asynSuccess || pasynOctetSyncIOipPort_ == nullptr) {
+    pasynOctetSyncIO->connect(ipPortConfigName, 0,
+                              &pSinqC_->pasynOctetSyncIOipPort, NULL);
+    if (status != asynSuccess || pSinqC_->pasynOctetSyncIOipPort == nullptr) {
         errlogPrintf("Controller \"%s\" => %s, line %d:\nFATAL ERROR (cannot "
                      "connect to MCU controller).\n"
                      "Terminating IOC",
@@ -98,8 +175,8 @@ sinqController::sinqController(const char *portName,
     // MOTOR_MESSAGE_TEXT corresponds to the PV definition inside sinqMotor.db.
     // This text is used to forward status messages to NICOS and in turn to the
     // user.
-    status =
-        createParam("MOTOR_MESSAGE_TEXT", asynParamOctet, &motorMessageText_);
+    status = createParam("MOTOR_MESSAGE_TEXT", asynParamOctet,
+                         &pSinqC_->motorMessageText);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -109,7 +186,7 @@ sinqController::sinqController(const char *portName,
         exit(-1);
     }
 
-    status = createParam("MOTOR_ENABLE", asynParamInt32, &motorEnable_);
+    status = createParam("MOTOR_ENABLE", asynParamInt32, &pSinqC_->motorEnable);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -119,7 +196,7 @@ sinqController::sinqController(const char *portName,
         exit(-1);
     }
 
-    status = createParam("MOTOR_RESET", asynParamInt32, &motorReset_);
+    status = createParam("MOTOR_RESET", asynParamInt32, &pSinqC_->motorReset);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -129,7 +206,8 @@ sinqController::sinqController(const char *portName,
         exit(-1);
     }
 
-    status = createParam("MOTOR_ENABLE_RBV", asynParamInt32, &motorEnableRBV_);
+    status = createParam("MOTOR_ENABLE_RBV", asynParamInt32,
+                         &pSinqC_->motorEnableRBV);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -139,8 +217,8 @@ sinqController::sinqController(const char *portName,
         exit(-1);
     }
 
-    status =
-        createParam("MOTOR_CAN_DISABLE", asynParamInt32, &motorCanDisable_);
+    status = createParam("MOTOR_CAN_DISABLE", asynParamInt32,
+                         &pSinqC_->motorCanDisable);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -150,8 +228,8 @@ sinqController::sinqController(const char *portName,
         exit(-1);
     }
 
-    status =
-        createParam("MOTOR_CAN_SET_SPEED", asynParamInt32, &motorCanSetSpeed_);
+    status = createParam("MOTOR_CAN_SET_SPEED", asynParamInt32,
+                         &pSinqC_->motorCanSetSpeed);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -162,7 +240,7 @@ sinqController::sinqController(const char *portName,
     }
 
     status = createParam("MOTOR_LIMITS_OFFSET", asynParamFloat64,
-                         &motorLimitsOffset_);
+                         &pSinqC_->motorLimitsOffset);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -172,7 +250,8 @@ sinqController::sinqController(const char *portName,
         exit(-1);
     }
 
-    status = createParam("MOTOR_CONNECTED", asynParamInt32, &motorConnected_);
+    status = createParam("MOTOR_CONNECTED", asynParamInt32,
+                         &pSinqC_->motorConnected);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -188,7 +267,7 @@ sinqController::sinqController(const char *portName,
     the declaration of motorHighLimitFromDriver_.
     */
     status = createParam("MOTOR_HIGH_LIMIT_FROM_DRIVER", asynParamFloat64,
-                         &motorHighLimitFromDriver_);
+                         &pSinqC_->motorHighLimitFromDriver);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -199,7 +278,7 @@ sinqController::sinqController(const char *portName,
     }
 
     status = createParam("MOTOR_LOW_LIMIT_FROM_DRIVER", asynParamFloat64,
-                         &motorLowLimitFromDriver_);
+                         &pSinqC_->motorLowLimitFromDriver);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -209,8 +288,19 @@ sinqController::sinqController(const char *portName,
         exit(-1);
     }
 
+    status = createParam("MOTOR_POSITION_DEADBAND", asynParamFloat64,
+                         &pSinqC_->motorPositionDeadband);
+    if (status != asynSuccess) {
+        asynPrint(this->pasynUser(), ASYN_TRACE_ERROR,
+                  "Controller \"%s\" => %s, line %d\nFATAL ERROR (creating a "
+                  "parameter failed with %s).\nTerminating IOC",
+                  portName, __PRETTY_FUNCTION__, __LINE__,
+                  stringifyAsynStatus(status));
+        exit(-1);
+    }
+
     status = createParam("MOTOR_ENABLE_MOV_WATCHDOG", asynParamInt32,
-                         &motorEnableMovWatchdog_);
+                         &pSinqC_->motorEnableMovWatchdog);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -221,7 +311,7 @@ sinqController::sinqController(const char *portName,
     }
 
     status = createParam("MOTOR_VELO_FROM_DRIVER", asynParamFloat64,
-                         &motorVeloFromDriver_);
+                         &pSinqC_->motorVeloFromDriver);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -232,7 +322,7 @@ sinqController::sinqController(const char *portName,
     }
 
     status = createParam("MOTOR_VBAS_FROM_DRIVER", asynParamFloat64,
-                         &motorVbasFromDriver_);
+                         &pSinqC_->motorVbasFromDriver);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -243,7 +333,7 @@ sinqController::sinqController(const char *portName,
     }
 
     status = createParam("MOTOR_VMAX_FROM_DRIVER", asynParamFloat64,
-                         &motorVmaxFromDriver_);
+                         &pSinqC_->motorVmaxFromDriver);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -254,7 +344,7 @@ sinqController::sinqController(const char *portName,
     }
 
     status = createParam("MOTOR_ACCL_FROM_DRIVER", asynParamFloat64,
-                         &motorAcclFromDriver_);
+                         &pSinqC_->motorAcclFromDriver);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -264,7 +354,8 @@ sinqController::sinqController(const char *portName,
         exit(-1);
     }
 
-    status = createParam("ADAPTIVE_POLLING", asynParamInt32, &adaptivePolling_);
+    status = createParam("ADAPTIVE_POLLING", asynParamInt32,
+                         &pSinqC_->adaptivePolling);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -274,7 +365,7 @@ sinqController::sinqController(const char *portName,
         exit(-1);
     }
 
-    status = createParam("ENCODER_TYPE", asynParamOctet, &encoderType_);
+    status = createParam("ENCODER_TYPE", asynParamOctet, &pSinqC_->encoderType);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -284,7 +375,8 @@ sinqController::sinqController(const char *portName,
         exit(-1);
     }
 
-    status = createParam("MOTOR_FORCE_STOP", asynParamInt32, &motorForceStop_);
+    status = createParam("MOTOR_FORCE_STOP", asynParamInt32,
+                         &pSinqC_->motorForceStop);
     if (status != asynSuccess) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\" => %s, line %d:\nFATAL ERROR (creating a "
@@ -351,11 +443,11 @@ asynStatus sinqController::writeInt32(asynUser *pasynUser, epicsInt32 value) {
     }
 
     // Handle custom PVs
-    if (function == motorEnable_) {
+    if (function == motorEnable()) {
         return axis->enable(value != 0);
-    } else if (function == motorReset_) {
+    } else if (function == motorReset()) {
         return axis->reset();
-    } else if (function == motorForceStop_) {
+    } else if (function == motorForceStop()) {
         return axis->stop(0.0);
     } else {
         return asynMotorController::writeInt32(pasynUser, value);
@@ -373,10 +465,10 @@ asynStatus sinqController::readInt32(asynUser *pasynUser, epicsInt32 *value) {
         return asynError;
     }
 
-    if (pasynUser->reason == motorEnableRBV_) {
+    if (pasynUser->reason == motorEnableRBV()) {
         getAxisParamChecked(axis, motorEnableRBV, value);
         return asynSuccess;
-    } else if (pasynUser->reason == motorCanDisable_) {
+    } else if (pasynUser->reason == motorCanDisable()) {
         getAxisParamChecked(axis, motorCanDisable, value);
         return asynSuccess;
     } else {
@@ -389,7 +481,7 @@ asynStatus sinqController::couldNotParseResponse(const char *command,
                                                  int axisNo,
                                                  const char *functionName,
                                                  int line) {
-    asynPrint(pasynOctetSyncIOipPort_, ASYN_TRACE_ERROR,
+    asynPrint(pasynOctetSyncIOipPort(), ASYN_TRACE_ERROR,
               "Controller \"%s\", axis %d => %s, line %d:\nCould not interpret "
               "response \"%s\" for command \"%s\".\n",
               portName, axisNo, functionName, line, response, command);
@@ -418,7 +510,7 @@ asynStatus sinqController::paramLibAccessFailed(asynStatus status,
                                                 int line) {
 
     if (status != asynSuccess) {
-        asynPrint(pasynOctetSyncIOipPort_, ASYN_TRACE_ERROR,
+        asynPrint(pasynOctetSyncIOipPort(), ASYN_TRACE_ERROR,
                   "Controller \"%s\", axis %d => %s, line %d:\n Accessing the "
                   "parameter library failed for parameter %s with error %s.\n",
                   portName, axisNo, functionName, line, parameter,
@@ -440,40 +532,42 @@ asynStatus sinqController::checkComTimeoutWatchdog(int axisNo,
     asynStatus paramLibStatus = asynSuccess;
 
     // Add a new timeout event to the queue
-    timeoutEvents_.push_back(time(NULL));
+    pSinqC_->timeoutEvents.push_back(time(NULL));
 
     // Remove every event which is older than the time window from the deque
     while (1) {
-        if (timeoutEvents_.empty()) {
+        if (pSinqC_->timeoutEvents.empty()) {
             break;
         }
-        if (timeoutEvents_[0] + comTimeoutWindow_ <= time(NULL)) {
-            timeoutEvents_.pop_front();
+        if (pSinqC_->timeoutEvents[0] + pSinqC_->comTimeoutWindow <=
+            time(NULL)) {
+            pSinqC_->timeoutEvents.pop_front();
         } else {
             break;
         }
     }
 
     // Check if the maximum allowed number of events has been exceeded
-    bool wantToPrint = timeoutEvents_.size() > maxNumberTimeouts_;
+    bool wantToPrint =
+        pSinqC_->timeoutEvents.size() > pSinqC_->maxNumberTimeouts;
 
-    if (msgPrintControl_.shouldBePrinted(portName, axisNo, __PRETTY_FUNCTION__,
-                                         __LINE__, wantToPrint,
-                                         pasynUserSelf)) {
+    if (pSinqC_->msgPrintC.shouldBePrinted(portName, axisNo,
+                                           __PRETTY_FUNCTION__, __LINE__,
+                                           wantToPrint, pasynUserSelf)) {
         asynPrint(this->pasynUserSelf, ASYN_TRACE_ERROR,
                   "Controller \"%s\", axis %d => %s, line %d:\nMore than %ld "
                   "communication timeouts in %ld "
                   "seconds.%s\n",
                   portName, axisNo, __PRETTY_FUNCTION__, __LINE__,
-                  maxNumberTimeouts_, comTimeoutWindow_,
-                  msgPrintControl_.getSuffix());
+                  pSinqC_->maxNumberTimeouts, pSinqC_->comTimeoutWindow,
+                  pSinqC_->msgPrintC.getSuffix());
     }
 
     if (wantToPrint) {
         snprintf(motorMessage, motorMessageSize,
                  "More than %ld communication timeouts in %ld seconds. Please "
                  "call the support.",
-                 maxNumberTimeouts_, comTimeoutWindow_);
+                 pSinqC_->maxNumberTimeouts, pSinqC_->comTimeoutWindow);
 
         paramLibStatus = setIntegerParam(motorStatusCommsError_, 1);
         if (paramLibStatus != asynSuccess) {
@@ -505,8 +599,8 @@ asynStatus sinqController::checkMaxSubsequentTimeouts(int timeoutNo, int axisNo,
                                                       size_t motorMessageSize) {
     asynStatus paramLibStatus = asynSuccess;
 
-    if (timeoutNo >= maxSubsequentTimeouts_) {
-        if (!maxSubsequentTimeoutsExceeded_) {
+    if (timeoutNo >= pSinqC_->maxSubsequentTimeouts) {
+        if (!pSinqC_->maxSubsequentTimeoutsExceeded) {
             snprintf(motorMessage, motorMessageSize,
                      "Communication timeout between IOC and motor controller. "
                      "Trying to reconnect ...");
@@ -516,7 +610,7 @@ asynStatus sinqController::checkMaxSubsequentTimeouts(int timeoutNo, int axisNo,
                 "subsequent communication timeouts. Check whether the "
                 "controller is still running and connected to the network.\n",
                 this->portName, axisNo, __PRETTY_FUNCTION__, __LINE__,
-                maxSubsequentTimeouts_);
+                pSinqC_->maxSubsequentTimeouts);
 
             paramLibStatus = setIntegerParam(motorStatusCommsError_, 1);
             if (paramLibStatus != asynSuccess) {
@@ -524,12 +618,12 @@ asynStatus sinqController::checkMaxSubsequentTimeouts(int timeoutNo, int axisNo,
                                             "motorStatusCommsError_", axisNo,
                                             __PRETTY_FUNCTION__, __LINE__);
             }
-            maxSubsequentTimeoutsExceeded_ = true;
+            pSinqC_->maxSubsequentTimeoutsExceeded = true;
         }
 
         return asynError;
     } else {
-        maxSubsequentTimeoutsExceeded_ = false;
+        pSinqC_->maxSubsequentTimeoutsExceeded = false;
         motorMessage[0] = '\0';
         return asynSuccess;
     }
@@ -551,8 +645,8 @@ asynStatus sinqController::checkMaxSubsequentTimeouts(int timeoutNo,
 asynStatus sinqController::poll() {
     // Decrement the number of outstanding forced fast polls, if they are not
     // zero
-    if (outstandingForcedFastPolls_ > 0) {
-        outstandingForcedFastPolls_--;
+    if (pSinqC_->outstandingForcedFastPolls > 0) {
+        pSinqC_->outstandingForcedFastPolls--;
     }
     return asynMotorController::poll();
 }
@@ -560,10 +654,89 @@ asynStatus sinqController::poll() {
 asynStatus sinqController::wakeupPoller() {
     // + 1 since outstandingForcedFastPolls_ is reduced once at the start of
     // a poll cycle
-    outstandingForcedFastPolls_ = forcedFastPolls_ + 1;
+    pSinqC_->outstandingForcedFastPolls = forcedFastPolls_ + 1;
     return asynMotorController::wakeupPoller();
 }
 
+asynStatus sinqController::setMaxSubsequentTimeouts(int maxSubsequentTimeouts) {
+    pSinqC_->maxSubsequentTimeouts = maxSubsequentTimeouts;
+    return asynSuccess;
+}
+
+bool sinqController::maxSubsequentTimeoutsExceeded() {
+    return pSinqC_->maxSubsequentTimeoutsExceeded;
+}
+
+/**
+ * @brief Get a reference to the map used to control the maximum number of
+ * message repetitions. See the documentation of `printRepetitionWatchdog`
+ * in msgPrintControl.h for details.
+ */
+msgPrintControl &sinqController::getMsgPrintControl() {
+    return pSinqC_->msgPrintC;
+}
+
+/**
+ * @brief Read the number of outstanding forced fast polls currently
+ * specified
+ *
+ */
+int sinqController::outstandingForcedFastPolls() {
+    return pSinqC_->outstandingForcedFastPolls;
+}
+
+/**
+ * @brief Return a pointer to the low-level octet (string) IP Port
+ *
+ * @return asynUser*
+ */
+asynUser *sinqController::pasynOctetSyncIOipPort() {
+    return pSinqC_->pasynOctetSyncIOipPort;
+}
+
+asynStatus sinqController::setThresholdComTimeout(time_t comTimeoutWindow,
+                                                  size_t maxNumberTimeouts) {
+    pSinqC_->comTimeoutWindow = comTimeoutWindow;
+    pSinqC_->maxNumberTimeouts = maxNumberTimeouts;
+    return asynSuccess;
+}
+
+int sinqController::motorMessageText() { return pSinqC_->motorMessageText; }
+int sinqController::motorReset() { return pSinqC_->motorReset; }
+int sinqController::motorEnable() { return pSinqC_->motorEnable; }
+int sinqController::motorEnableRBV() { return pSinqC_->motorEnableRBV; }
+int sinqController::motorCanDisable() { return pSinqC_->motorCanDisable; }
+int sinqController::motorEnableMovWatchdog() {
+    return pSinqC_->motorEnableMovWatchdog;
+}
+int sinqController::motorCanSetSpeed() { return pSinqC_->motorCanSetSpeed; }
+int sinqController::motorLimitsOffset() { return pSinqC_->motorLimitsOffset; }
+int sinqController::motorForceStop() { return pSinqC_->motorForceStop; }
+int sinqController::motorConnected() { return pSinqC_->motorConnected; }
+int sinqController::motorVeloFromDriver() {
+    return pSinqC_->motorVeloFromDriver;
+}
+int sinqController::motorVbasFromDriver() {
+    return pSinqC_->motorVbasFromDriver;
+}
+int sinqController::motorVmaxFromDriver() {
+    return pSinqC_->motorVmaxFromDriver;
+}
+int sinqController::motorAcclFromDriver() {
+    return pSinqC_->motorAcclFromDriver;
+}
+int sinqController::motorHighLimitFromDriver() {
+    return pSinqC_->motorHighLimitFromDriver;
+}
+int sinqController::motorLowLimitFromDriver() {
+    return pSinqC_->motorLowLimitFromDriver;
+}
+int sinqController::motorPositionDeadband() {
+    return pSinqC_->motorPositionDeadband;
+}
+int sinqController::adaptivePolling() { return pSinqC_->adaptivePolling; }
+int sinqController::encoderType() { return pSinqC_->encoderType; }
+
 // Static pointers (valid for the entire lifetime of the IOC). The number behind
 // the strings gives the integer number of each variant (see also method
 // stringifyAsynStatus)
@@ -671,7 +844,8 @@ static const iocshArg *const setThresholdComTimeoutArgs[] = {
     &setThresholdComTimeoutArg0, &setThresholdComTimeoutArg1,
     &setThresholdComTimeoutArg2};
 static const iocshFuncDef setThresholdComTimeoutDef = {
-    "setThresholdComTimeout", 3, setThresholdComTimeoutArgs};
+    "setThresholdComTimeout", 3, setThresholdComTimeoutArgs,
+    "Set the communication timeout threshold in seconds"};
 
 static void setThresholdComTimeoutCallFunc(const iocshArgBuf *args) {
     setThresholdComTimeout(args[0].sval, args[1].ival, args[2].ival);
@@ -732,7 +906,9 @@ static const iocshArg SetMaxSubsequentTimeoutsArg1 = {
 static const iocshArg *const SetMaxSubsequentTimeoutsArgs[] = {
     &SetMaxSubsequentTimeoutsArg0, &SetMaxSubsequentTimeoutsArg1};
 static const iocshFuncDef setMaxSubsequentTimeoutsDef = {
-    "setMaxSubsequentTimeouts", 2, SetMaxSubsequentTimeoutsArgs};
+    "setMaxSubsequentTimeouts", 2, SetMaxSubsequentTimeoutsArgs,
+    "Set the maximum number of subsequent timeouts before the user receives an "
+    "error message"};
 static void setMaxSubsequentTimeoutsCallFunc(const iocshArgBuf *args) {
     setMaxSubsequentTimeouts(args[0].sval, args[1].ival);
 }
@@ -786,13 +962,15 @@ asynStatus setForcedFastPolls(const char *portName, int forcedFastPolls) {
 static const iocshArg SetForcedFastPollsArg0 = {"Controller name (e.g. mcu1)",
                                                 iocshArgString};
 static const iocshArg SetForcedFastPollsArg1 = {
-    "Number of fast polls after \"waking\" the poller (e.g. after issueing a "
+    "Number of fast polls after \"waking\" the poller (e.g. after issuing a "
     "move command).",
     iocshArgInt};
 static const iocshArg *const SetForcedFastPollsArgs[] = {
     &SetForcedFastPollsArg0, &SetForcedFastPollsArg1};
-static const iocshFuncDef setForcedFastPollsDef = {"setForcedFastPolls", 2,
-                                                   SetForcedFastPollsArgs};
+static const iocshFuncDef setForcedFastPollsDef = {
+    "setForcedFastPolls", 2, SetForcedFastPollsArgs,
+    "Set the number of fast polls after \"waking\" the poller (e.g. after "
+    "issuing a move command)."};
 static void setForcedFastPollsCallFunc(const iocshArgBuf *args) {
     setForcedFastPolls(args[0].sval, args[1].ival);
 }

src/sinqController.h

@@ -11,9 +11,9 @@ Stefan Mathis, November 2024
 #define sinqController_H
 #include "asynMotorController.h"
 #include "msgPrintControl.h"
-#include <deque>
 #include <initHooks.h>
-#include <unordered_map>
+#include <macros.h>
+#include <memory>
 
 #define motorMessageIsFromDriverString "MOTOR_MESSAGE_DRIVER"
 #define motorMessageTextString "MOTOR_MESSAGE_TEXT"
@@ -21,7 +21,9 @@ Stefan Mathis, November 2024
 #define AbsoluteEncoder "absolute"
 #define NoEncoder "none"
 
-class epicsShareClass sinqController : public asynMotorController {
+struct HIDDEN sinqControllerImpl;
+
+class HIDDEN sinqController : public asynMotorController {
   public:
     /**
    * @brief Construct a new sinqController object
@@ -175,11 +177,7 @@ class epicsShareClass sinqController : public asynMotorController {
      * @return asynStatus
      */
     virtual asynStatus setThresholdComTimeout(time_t comTimeoutWindow,
-                                              size_t maxNumberTimeouts) {
-        comTimeoutWindow_ = comTimeoutWindow;
-        maxNumberTimeouts_ = maxNumberTimeouts;
-        return asynSuccess;
-    }
+                                              size_t maxNumberTimeouts);
 
     /**
      * @brief Inform the user, if the number of timeouts exceeds the threshold
@@ -211,17 +209,23 @@ class epicsShareClass sinqController : public asynMotorController {
      * @param maxSubsequentTimeouts
      * @return asynStatus
      */
-    asynStatus setMaxSubsequentTimeouts(int maxSubsequentTimeouts) {
-        maxSubsequentTimeouts_ = maxSubsequentTimeouts;
-        return asynSuccess;
-    }
+    asynStatus setMaxSubsequentTimeouts(int maxSubsequentTimeouts);
+
+    /**
+     * @brief If true, the maximum number of subsequent communication timeouts
+     * set in `setMaxSubsequentTimeouts` has been exceeded
+     *
+     * @return true
+     * @return false
+     */
+    bool maxSubsequentTimeoutsExceeded();
 
     /**
      * @brief Get a reference to the map used to control the maximum number of
      * message repetitions. See the documentation of `printRepetitionWatchdog`
      * in msgPrintControl.h for details.
      */
-    msgPrintControl &getMsgPrintControl() { return msgPrintControl_; }
+    msgPrintControl &getMsgPrintControl();
 
     /**
      * @brief Get the axis object
@@ -293,25 +297,27 @@ class epicsShareClass sinqController : public asynMotorController {
     int motorRecDirection() { return motorRecDirection_; }
     int motorRecOffset() { return motorRecOffset_; }
 
-    // Accessors for additional PVs defined in sinqController
-    int motorMessageText() { return motorMessageText_; }
-    int motorReset() { return motorReset_; }
-    int motorEnable() { return motorEnable_; }
-    int motorEnableRBV() { return motorEnableRBV_; }
-    int motorCanDisable() { return motorCanDisable_; }
-    int motorEnableMovWatchdog() { return motorEnableMovWatchdog_; }
-    int motorCanSetSpeed() { return motorCanSetSpeed_; }
-    int motorLimitsOffset() { return motorLimitsOffset_; }
-    int motorForceStop() { return motorForceStop_; }
-    int motorConnected() { return motorConnected_; }
-    int motorVeloFromDriver() { return motorVeloFromDriver_; }
-    int motorVbasFromDriver() { return motorVbasFromDriver_; }
-    int motorVmaxFromDriver() { return motorVmaxFromDriver_; }
-    int motorAcclFromDriver() { return motorAcclFromDriver_; }
-    int motorHighLimitFromDriver() { return motorHighLimitFromDriver_; }
-    int motorLowLimitFromDriver() { return motorLowLimitFromDriver_; }
-    int adaptivePolling() { return adaptivePolling_; }
-    int encoderType() { return encoderType_; }
+    // Accessors for additional PVs defined in sinqController (which are hidden
+    // in pSinqC_)
+    int motorMessageText();
+    int motorReset();
+    int motorEnable();
+    int motorEnableRBV();
+    int motorCanDisable();
+    int motorEnableMovWatchdog();
+    int motorCanSetSpeed();
+    int motorLimitsOffset();
+    int motorForceStop();
+    int motorConnected();
+    int motorVeloFromDriver();
+    int motorVbasFromDriver();
+    int motorVmaxFromDriver();
+    int motorAcclFromDriver();
+    int motorHighLimitFromDriver();
+    int motorLowLimitFromDriver();
+    int motorPositionDeadband();
+    int adaptivePolling();
+    int encoderType();
 
     // Additional members
     int numAxes() { return numAxes_; }
@@ -330,7 +336,7 @@ class epicsShareClass sinqController : public asynMotorController {
      *
      * @return asynUser*
      */
-    asynUser *pasynOctetSyncIOipPort() { return pasynOctetSyncIOipPort_; }
+    asynUser *pasynOctetSyncIOipPort();
 
     /**
      * @brief Overloaded version of `asynController::poll` which decreases
@@ -374,76 +380,26 @@ class epicsShareClass sinqController : public asynMotorController {
      * specified
      *
      */
-    int outstandingForcedFastPolls() { return outstandingForcedFastPolls_; }
+    int outstandingForcedFastPolls();
 
-    // Maximum error message buffer size. This is an empirical value which must
-    // be large enough to avoid overflows for all commands to the device /
-    // responses from it.
+    /**
+     * @brief Return the maximum error message buffer size
+     *
+     * This is an empirical value which must be large enough to avoid overflows
+     * for all commands to the device / responses from it.
+     *
+     * @return uint32_t
+     */
+    uint32_t msgSize() { return MAXBUF_; }
+
+    // Maximum message size
     static const uint32_t MAXBUF_ = 200;
 
     // =========================================================================
 
-  protected:
-    // Number of fast polls which still need to be performed before adaptive
-    // polling is active again.
-    int outstandingForcedFastPolls_;
-
-    // Number of polls forced by wakeupPoller which are still
-
-    // Pointer to the port user which is specified by the char array
-    // `ipPortConfigName` in the constructor
-    asynUser *pasynOctetSyncIOipPort_;
-    double movingPollPeriod_;
-    double idlePollPeriod_;
-    msgPrintControl msgPrintControl_;
-
-    // Internal variables used in the communication timeout frequency watchdog
-    time_t comTimeoutWindow_;  // Size of the time window
-    size_t maxNumberTimeouts_; // Maximum acceptable number of events within the
-                               // time window
-    std::deque<time_t>
-        timeoutEvents_; // Deque holding the timestamps of the individual events
-
-    // Communicate a timeout to the user after it has happened this many times
-    // in a row
-    int maxSubsequentTimeouts_;
-    bool maxSubsequentTimeoutsExceeded_;
-
-    /*
-    See the documentation in db/sinqMotor.db for the following integers
-    */
-#define FIRST_SINQMOTOR_PARAM motorMessageText_
-    int motorMessageText_;
-    int motorReset_;
-    int motorEnable_;
-    int motorEnableRBV_;
-    int motorCanDisable_;
-    int motorEnableMovWatchdog_;
-    int motorCanSetSpeed_;
-    int motorLimitsOffset_;
-    int motorForceStop_;
-    int motorConnected_;
-    /*
-    These parameters are here to write values from the hardware to the EPICS
-    motor record. Using motorHighLimit_ / motorLowLimit_ does not work:
-    https://epics.anl.gov/tech-talk/2023/msg00576.php. Therefore, some
-    additional records are introduced which read from these parameters and write
-    into the motor record.
-    */
-    int motorVeloFromDriver_;
-    int motorVbasFromDriver_;
-    int motorVmaxFromDriver_;
-    int motorAcclFromDriver_;
-    int motorHighLimitFromDriver_;
-    int motorLowLimitFromDriver_;
-    int adaptivePolling_;
-    int encoderType_;
-#define LAST_SINQMOTOR_PARAM encoderType_
-
   private:
+    std::unique_ptr<sinqControllerImpl> pSinqC_;
     static void epicsInithookFunction(initHookState iState);
 };
-#define NUM_SINQMOTOR_DRIVER_PARAMS                                            \
-    (&LAST_SINQMOTOR_PARAM - &FIRST_SINQMOTOR_PARAM + 1)
 
 #endif