Static & Dynamic Segments

# FlexRay slot allocation: assign I-PDUs to static slots
# Safety-critical signals → static slots
# High-bandwidth non-critical → dynamic segment

messages = [
    # (name, payload_bytes, rate_ms, safety_critical)
    ("SteeringTorqueCmd",  4,  2, True),  # → 1 slot per cycle (2ms cycle)
    ("BrakePressureFB",    8,  2, True),  # → 1 slot per cycle
    ("WheelSpeed_FL",      4,  2, True),  # → 1 slot per cycle
    ("WheelSpeed_FR",      4,  2, True),  # → 1 slot per cycle
    ("EngineSpeed",        4,  5, False), # → every 2nd or 3rd cycle
    ("XCP_Calibration",   24, 10, False), # → dynamic segment preferred
]

GDCYCLE_MS  = 2
PAYLOAD_MAX = 12  # words = 24 bytes per static slot

static_slots_needed = 0
for name, payload, rate, critical in messages:
    if critical:
        slots_per_cycle = 1  # rate must be ≤ gdCycle for critical
        static_slots_needed += slots_per_cycle
        print(f"Static slot {static_slots_needed}: {name} ({payload}B, {rate}ms, every cycle)")
    else:
        cycles_per_msg = rate // GDCYCLE_MS
        print(f"  Optional static (every {cycles_per_msg} cycles) or dynamic: {name}")

print(f"\nTotal static slots required: {static_slots_needed}")
print(f"Bandwidth: {static_slots_needed} × 24B × 8 / {GDCYCLE_MS}ms = "
      f"{static_slots_needed * 24 * 8 / (GDCYCLE_MS/1000) / 1e6:.1f} Mbps")