Initial commit: demo-epb v1.0 — Elektrische Parkbremse Demo

Vollstaendige Demo des slohmaier Dev Process anhand einer EPB-Steuergeraet-
Software. Zeigt ASPICE 4.0 / ISO 26262-konforme Entwicklung im Monorepo.

Inhalte:
- 5 Plaene (PID, PM-, QA-, SWE-, Test-Plan) in Word, ausgefuellt mit
  EPB-spezifischen Inhalten
- 10 System-Anforderungen + 25 Software-Anforderungen (Doorstop-MD)
- 5 System-Architektur-Elemente + 10 Software-Architektur-Elemente
  mit PlantUML-Diagrammen und vollstaendigem Mapping
- 3 implementierte Komponenten (Apply Controller D, Actuator Driver B,
  Switch Debouncer QM) plus 7 Header-Stubs
- 28 Unit-Tests, alle gruen, mit Coverage- und MISRA-Build-Targets
- Audit-Artefakte: 1 Review-Protokoll, 1 Non-Conformity, 1 MISRA-Record
- Gitea-Actions-CI-Pipeline (validate.yml)
- Doorstop-Konfiguration fuer bidirektionale Traceability
- Generator-Skript fuer alle 50 Reqs/Arch-Elemente aus Strukturdaten
- README mit gefuehrter Tour fuer Prospects

src/switch_debouncer.c

@@ -0,0 +1,60 @@
+/**
+ * @file switch_debouncer.c
+ * @brief Implementierung des EPB-Schalter-Debouncers.
+ *
+ * @arch SWA-006
+ * @reqs SWE-025
+ *
+ * ASIL: QM.
+ */
+#include "switch_debouncer.h"
+
+typedef struct {
+    SwitchState current;
+    SwitchState candidate;
+    uint8_t     candidate_count;
+} DebouncerCtx;
+
+static DebouncerCtx s_ctx;
+
+static SwitchState raw_to_candidate(SwitchRaw raw)
+{
+    if (raw.apply_raw && !raw.release_raw) {
+        return SWITCH_APPLY;
+    }
+    if (raw.release_raw && !raw.apply_raw) {
+        return SWITCH_RELEASE;
+    }
+    return SWITCH_NEUTRAL;
+}
+
+EpbStatus switch_init(void)
+{
+    s_ctx.current = SWITCH_NEUTRAL;
+    s_ctx.candidate = SWITCH_NEUTRAL;
+    s_ctx.candidate_count = 0U;
+    return EPB_OK;
+}
+
+void switch_step_10ms(SwitchRaw raw)
+{
+    const SwitchState observed = raw_to_candidate(raw);
+
+    if (observed == s_ctx.candidate) {
+        if (s_ctx.candidate_count < SWITCH_DEBOUNCE_SAMPLES) {
+            ++s_ctx.candidate_count;
+        }
+    } else {
+        s_ctx.candidate = observed;
+        s_ctx.candidate_count = 1U;
+    }
+
+    if (s_ctx.candidate_count >= SWITCH_DEBOUNCE_SAMPLES) {
+        s_ctx.current = s_ctx.candidate;
+    }
+}
+
+SwitchState switch_get_state(void)
+{
+    return s_ctx.current;
+}