Auto: focas-f2a — DIAG: address scheme

New FocasAreaKind.Diagnostic parsed from DIAG:nnn (whole-CNC) and
DIAG:nnn/axis (per-axis), validated against a per-series
FocasCapabilityMatrix.DiagnosticRange table (16i: 0-499; 0i-F family:
0-999; 30i/31i/32i: 0-1023; Power Motion i: 0-255; Unknown: permissive
per existing matrix convention).

IFocasClient gains ReadDiagnosticAsync(diagNumber, axisOrZero, type,
ct) with a default returning BadNotSupported so older transport
variants degrade gracefully. FwlibFocasClient implements it via a new
cnc_rddiag P/Invoke that reuses the IODBPSD struct (same shape as
cnc_rdparam). FocasDriver.ReadAsync dispatches Diagnostic addresses
through the new path; non-Diagnostic kinds keep the existing
ReadAsync route unchanged.

Tests: parser positives (DIAG:1031, DIAG:280/2, case-insensitive,
zero, axis-8) + negatives (malformed, axis>31), capability matrix
boundaries per series, driver-level dispatch verifying axis index
threads through, init-time rejection on out-of-range, and
BadNotSupported fallback when the wire client doesn't override the
default. 266/266 pass in Driver.FOCAS.Tests.

Closes #263

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-04-25 19:31:49 -04:00
parent 6743d51db8
commit 451b37a632
9 changed files with 364 additions and 9 deletions

View File

@@ -148,6 +148,20 @@ public interface IFocasClient : IDisposable
/// </summary>
Task<IReadOnlyDictionary<string, int>?> GetFigureScalingAsync(CancellationToken cancellationToken)
=> Task.FromResult<IReadOnlyDictionary<string, int>?>(null);
/// <summary>
/// Read a CNC diagnostic value via <c>cnc_rddiag</c>. <paramref name="diagNumber"/> is
/// the diagnostic number (validated against <see cref="FocasCapabilityMatrix.DiagnosticRange"/>
/// by <see cref="FocasDriver.InitializeAsync"/>). <paramref name="axisOrZero"/>
/// is 0 for whole-CNC diagnostics or the 1-based axis index for per-axis diagnostics.
/// The shape of the returned value depends on the diagnostic — Int / Float / Bit are
/// all possible. Returns <c>null</c> on default (transport variants that haven't yet
/// implemented diagnostics) so the driver falls back to BadNotSupported on those nodes
/// until the wire client is extended (issue #263).
/// </summary>
Task<(object? value, uint status)> ReadDiagnosticAsync(
int diagNumber, int axisOrZero, FocasDataType type, CancellationToken cancellationToken)
=> Task.FromResult<(object?, uint)>((null, FocasStatusMapper.BadNotSupported));
}
/// <summary>