---
source_files:
  - DataPRO/IService/StateMachine/StatusAndParameters/Configure/GroupChannelWithMeta.cs
  - DataPRO/IService/StateMachine/StatusAndParameters/Configure/ConfigureStatusParameters.cs
  - DataPRO/IService/StateMachine/StatusAndParameters/Configure/ConfigureStatusInformation.cs
generated_at: "2026-04-17T15:41:27.157987+00:00"
model: "zai-org/GLM-5-FP8"
schema_version: 1
sha256: "0a25ce0aa4784f4b"
---

# Documentation: Configure State Machine Module

## 1. Purpose

This module provides the configuration state machine for Data Acquisition System (DAS) units, managing the complete lifecycle of hardware configuration including channel resolution, sensor-to-hardware mapping, configuration application, and diagnostic preparation. It serves as the orchestration layer between high-level test setup definitions and low-level hardware communication, supporting both automatic channel resolution (via EID lookup) and manual channel assignment with validation.

---

## 2. Public Interface

### `ConfigureStatusParameters` (Class)
**Namespace:** `DTS.DASLib.Service.StateMachine`  
**Implements:** `IStatusParameters`

Configuration options container for the configure state machine.

#### Properties

| Property | Type | Default | Description |
|----------|------|---------|-------------|
| `RequireIdFoundForSensorsWithIds` | `bool` | `true` | Requires that sensors with IDs have their EID found during resolution |
| `AllowMissingSensors` | `bool` | `false` | Permits channels without assigned sensors |
| `AllowSensorsOutOfPosition` | `bool` | `true` | Allows sensors on different channels than originally specified |
| `AllowSensorIdToBlankChannel` | `bool` | `false` | Permits assigning sensors with EIDs to unassigned hardware channels |
| `TestSetupConfiguration` | `ITestSetup` | `null` | The test setup containing channel/group definitions |
| `TurnOffExcitation` | `bool` | `false` | Triggers excitation shutdown process |
| `UnitsToConfigure` | `IDASCommunication[]` | empty array | Target DAS units for configuration |
| `DoStrictCheck` | `bool` | `true` | Enables strict validation during configuration |
| `EventConfig` | `bool` | `true` | Writes to event/diagnostic file stores (SLICE legacy feature) |
| `DummyConfig` | `bool` | `false` | Configures units without actual data collection |
| `MaxAAF` | `double[]` | empty array | Maximum Anti-Alias Filter values for SLICE/TDAS |
| `ConfigureDigitalOutputs` | `bool` | `true` | Whether to apply digital output configuration |
| `TurnOffAAFRealtime` | `bool` | `true` | Disables AAF for realtime mode (performance optimization) |
| `ResetHardwareEventLines` | `bool` | `false` | Resets hardware event lines before configuration |
| `PrepareForDiagnostics` | `bool` | `false` | Enables excitation/switch preparation for diagnostics |
| `SkipTurnOnPower` | `bool` | `false` | Skips power-on step to maintain low-power state |
| `SetConfiguration` | `bool` | `true` | Whether to apply configuration at all |
| `DiscardDiagnostics` | `bool` | `true` | Discards diagnostics during configuration |
| `DSPFilterType` | `DSPFilterType` | from collection | DSP filter configuration |
| `SampleRateLookup` | `IReadOnlyDictionary<string, double>` | empty | Serial number to sample rate mapping |
| `AAFRateLookup` | `IReadOnlyDictionary<string, float>` | empty | Serial number to AAF rate mapping |

#### Delegates

| Delegate | Signature | Description |
|----------|-----------|-------------|
| `GetSensorDelegate` | `ISensorData(IGroupChannel)` | Retrieves sensor data for a group channel |
| `GetSensorCalibrationDelegate` | `ISensorCalibration(ISensorData, ExcitationVoltageOption)` | Retrieves calibration for sensor/excitation combo |
| `GetDatabaseIdDelegate` | `int(IDASCommunication)` | Retrieves database ID for a DAS unit |
| `SetSensorCalibrationDelegate` | `void(ISensorData, ISensorCalibration)` | Sets calibration on a sensor |

#### Methods

- **`ConfigureStatusParameters()`** - Constructor; initializes `DSPFilterType` from `DSPFilterCollection`
- **`void Reset()`** - Resets all properties to default values
- **`string ToString()`** - Returns formatted string of all parameter values

---

### `ConfigureStatusInformation` (Class)
**Namespace:** `DTS.DASLib.Service.StateMachine`  
**Implements:** `IStatusInfo`

Runtime status tracking and orchestration for the configuration process.

#### Nested Types

**`StatusValues` (Enum)**
```
ApplyingConfiguration, AutoResolvingChannels, ManuallyResolvedChannels,
Completed, Cancelling, Cancelled, ChannelOutOfPosition, NoChannelsAssigned,
AllChannelsResolved, EIDNotFound, ApplyConfigFailed, AppliedConfiguration,
PrepareForDiagnostics, PrepareForDiagnosticsFailed, PrepareForDiagnosticsSuccess,
LowPower, LowPowerSuccess, LowPowerFailure
```

**`InvalidAssignmentException` (Exception)**
- `Reasons` enum: `BlankChannel, NoSensor, ChannelDisabled, SensorNotFound, IncompatibleHardware, ChannelAlreadyAssigned, EID_Locked, EIDRequiredAndMissing, ChannelNotAssigned`
- Properties: `IGroupChannel GroupChannel`, `Reasons Reason`

**`SensorCompatiblilityResponse` (Enum)** - `internal`
```
Compatible, DigitalInputNotSupportedOnHWChannel, DigitalInputModeNotSupportedOnHWChannel,
BridgeModeNotSupportedOnHWChannel, SquibFireModeNotSupportedOnHWChannel,
NoSupportedExcitationOnHWChannel
```

#### Properties

| Property | Type | Description |
|----------|------|-------------|
| `NoChannelsAssigned` | `bool` | `true` when no channels are assigned |
| `AllChannelsResolved` | `bool` | `true` when all channels are resolved |
| `ChannelsOutOfPosition` | `bool` | `true` when channels are on different hardware than specified |
| `HaveAppliedConfigAllUnits` | `bool` | `true` when all target units are configured |
| `UnitsConfigured` | `IDASCommunication[]` | Successfully configured units |
| `CancelEvent` | `ManualResetEvent` | Signals cancel request |
| `DoneEvent` | `ManualResetEvent` | Signals work completion |
| `CompleteAction` | `ActionCompleteDelegate` | Completion callback |
| `ProgressAction` | `SetProgressValueDelegate` | Progress notification callback |
| `StatusAction` | `StatusIntDelegate` | Status notification callback |
| `StatusExAction` | `StatusExIntDelegate` | Extended status notification callback |

#### Methods

- **`Task Cancel()`** - Async; sets cancel event, waits for task completion, reports `Cancelling` then `Cancelled` status
- **`void ApplyConfig()`** - Starts configuration process; checks `TurnOffExcitation` flag first; runs configuration in background task
- **`void TurnOffExcitation()`** - Initiates low-power mode on all DAS units; runs in background task
- **`void ManuallyResolveChannel(IGroupChannel channel, IDASChannel hardwareChannel)`** - Manually assigns a sensor channel to hardware; validates compatibility and throws `InvalidAssignmentException` on failure
- **`void ManuallyUnresolveChannel(IGroupChannel channel)`** - Removes manual channel assignment; throws if channel not assigned or EID-locked
- **`void Reset()`** - Resets all status properties to defaults

---

### `GroupChannelWithMeta` (Class)
**Namespace:** `DTS.DASLib.Service.StateMachine.StatusAndParameters.Configure`  
**Access:** `internal`

Helper class for tracking channel resolution state.

#### Properties

| Property | Type | Description |
|----------|------|-------------|
| `ChannelConflict` | `bool` | Channel has conflicting assignment |
| `ConflictingChannel` | `IGroupChannel` | Reference to conflicting channel |
| `Channel` | `IGroupChannel` | The group channel being tracked |
| `Group` | `IGroup` | Parent group reference |
| `MissingID` | `bool` | EID not found during resolution |
| `MissingSensor` | `bool` | No sensor assigned to channel |
| `EIDOutOfPlace` | `bool` | EID found on different hardware than expected |
| `HWNotFound` | `bool` | Hardware channel not found |
| `HWChannelIncompatible` | `bool` | Hardware incompatible with sensor |
| `DASChannel` | `IDASChannel` | Resolved hardware channel |
| `AssignedByEID` | `bool` | Channel was auto-assigned via EID lookup |

---

## 3. Invariants

1. **Mutual Exclusion of Channel State**: A channel exists in either `_resolvedChannels` or `_unresolvedChannels`, never both simultaneously. Methods `AddResolvedChannel` and `AddUnresolvedChannel` both remove from the opposite list before adding.

2. **Thread-Safe Unit Tracking**: The `UnitsConfigured` array is modified exclusively through `AddConfiguredDevice`, which uses a static lock object (`MyLock`) to prevent race conditions.

3. **EID Lock Immutability**: Channels assigned via EID (`AssignedByEID = true`) cannot be manually unresolved or reassigned to different hardware.

4. **Task Synchronization**: `CancelEvent` and `DoneEvent` coordinate task lifecycle; `DoneEvent` is reset at the start of `ApplyConfig` and set upon completion.

5. **Configuration Bypass**: If `SetConfiguration` is `false`, the configuration application step is skipped entirely, proceeding directly to power/diagnostic preparation.

---

## 4. Dependencies

### This Module Depends On

| Namespace | Purpose |
|-----------|---------|
| `DTS.Common.Interface.Channels` | Channel interfaces (`IDASChannel`, `AnalogInputDASChannel`, `OutputSquibChannel`, `OutputTOMDigitalChannel`) |
| `DTS.Common.Interface.DASFactory` | DAS communication and configuration interfaces (`IDASCommunication`, `IDASFactory`) |
| `DTS.Common.Interface.DASFactory.Config` | Configuration data structures |
| `DTS.Common.Interface.Sensors` | Sensor interfaces (`ISensorData`, `ISensorCalibration`) |
| `DTS.Common.Interface.StatusAndProgressBar` | Status/callback delegates |
| `DTS.Common.Interface.TestSetups.TestSetupsList` | Test setup interfaces (`ITestSetup`) |
| `DTS.Common.Interface.Groups.GroupList` | Group/channel interfaces (`IGroup`, `IGroupChannel`) |
| `DTS.Common.Classes.DSP` | DSP filter types and collections |
| `DTS.Common.Enums` | `ExcitationVoltageOptions`, `DSPFilterType` |
| `DTS.Common.Utilities.Logging` | `APILogger` for exception logging |
| `DTS.DASLib.Service.StateMachine.StatusAndParameters.Configure` | `GroupChannelWithMeta` (same namespace) |

### External Service Dependencies (instantiated within)

| Service | Usage |
|---------|-------|
| `DiagnosticsService` | Prepare units for diagnostic mode |
| `ArmingService` | Enter low-power mode |
| `ConfigurationService` | Apply hardware configuration |

### Global State Dependencies

- **`States.Instance.Configure`** - Configuration state access
- **`States.Instance.ConfigureStart`** - Alternate state access path
- **`States.Instance.Configure.Status.GlobalStatusInformation`** - Global status tracking (e.g., `ExcitationOn` flag)

---

## 5. Gotchas

1. **Dual State Access Paths**: The code accesses `States.Instance.Configure` and `States.Instance.ConfigureStart` interchangeably. The relationship between these two paths is unclear from source alone—this may indicate a refactoring artifact or intentional state sharing.

2. **Hardcoded Timing Constants**: `PREPARE_SPIN_TIME` (200ms) and `EXPECTED_PREPARE_TIME` (8000ms) are hardcoded in `PrepareForDiagnostics`. These may not be appropriate for all hardware configurations.

3. **Cancel Latency**: The `Cancel` method includes a fixed 100ms `Thread.Sleep` to "simulate time spent waiting for cancel to be acknowledged." This may cause unexpected delays in time-sensitive scenarios.

4. **Exception Re-throw Pattern**: In `PrepareForDiagnostics`, exceptions are caught and re-thrown with `throw ex`, which destroys the original stack trace. This should be `throw` instead.

5. **Legacy SLICE Features**: The `EventConfig` property references a "legacy feature of sliceware" for multiple file stores. Not all units support this, but the source does not indicate which units do.

6. **Delegate Nullability**: Several delegate properties (`GetSensorAction`, `GetCalibrationAction`, `GetDatabaseIdAction`, `SetSensorCalibrationAction`) are not validated for null before invocation. Callers must ensure these are set.

7. **Array Initialization Pattern**: Properties like `MaxAAF`, `UnitsToConfigure`, `SampleRateLookup`, and `AAFRateLookup` are initialized to empty collections rather than null, but the source does not document whether consumers should replace these or modify them in-place.