Message Table

Message Table & Scheduling

The Message Table is the central control panel for what the simulator transmits. Every row represents a CAN message template with full control over:

• ✅ Enable / Disable state
• ✅ Arbitration ID
• ✅ Transmit Period
• ✅ Raw vs Built-In message behavior

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✅ Message Table Columns

Column	Description
Enabled	Checkbox to turn transmission on/off
Name	Human-readable message name
ID (hex)	Arbitration ID of the CAN frame
Period (ms)	Transmit interval in milliseconds

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✅ Enabling & Disabling Messages

• ✅ Click the checkbox in the Enabled column
• ✅ Disabled messages:
  • Do not transmit
  • Remain in the profile
  • Can be re-enabled instantly

This allows you to turn individual signals on/off without rebuilding profiles.

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✅ Changing Transmit Rate

Each row contains a live Period (ms) spinbox:

• ✅ Minimum: 1 ms
• ✅ Maximum: 600,000 ms (10 minutes)
• ✅ Live-editable while stopped
• ⚠️ Locked while running

Example:

Period Value	Effect
200	5 Hz
100	10 Hz
1000	1 Hz

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✅ Built-In vs Raw Messages

Feature	Built-In	Raw
Editable Payload	❌ No	✅ Yes
Deletable	❌ No	✅ Yes
Period Adjustable	✅ Yes	✅ Yes
Saved in Profiles	✅ Yes	✅ Yes

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✅ Double-Click Editing (Raw Only)

• ✅ Double-click any Raw Message
• ✅ Opens the Raw Message Editor
• ✅ You may modify:
  • Arbitration ID
  • ID Type
  • Data bytes
  • Transmit period

⚠️ Built-in profile messages cannot be edited by double-click.

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✅ Message Ordering

• Messages transmit based on:
  • Their individual timers
  • Their enabled state
• Ordering in the table does not affect:
  • Transmit timing
  • Arbitration priority

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✅ Scheduler Behavior

Internally, the scheduler:

• ✅ Tracks each message independently
• ✅ Uses precise timestamps
• ✅ Maintains exact transmit periods
• ✅ Does not drift over long runtimes

This ensures predictable, repeatable test signals.

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✅ Safe Runtime Control

While the simulator is running:

• ❌ Profiles cannot be changed
• ❌ Messages cannot be added or deleted
• ✅ Live GNSS values still update
• ✅ Message timing remains locked

When stopped, all controls unlock again.

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✅ Common Workflows

Disable High-Rate Traffic for Debug

1. Stop simulation
2. Disable 10 Hz / 20 Hz messages
3. Resume simulation with cleaner traffic

Build a Targeted Test Stream

1. Disable all built-in messages
2. Add only needed Raw Messages
3. Save as a custom profile

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