Standard CAN broadcast: Difference between revisions
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Messages are broadcasted in ASCII character format, with a maximum of 16 characters across two CAN messages. | Messages are broadcasted in ASCII character format, with a maximum of 16 characters across two CAN messages. | ||
Alert Messages are broadcast on CAN1. | |||
Message priority is 0 - 2, with 0 = normal priority used for pit-to car alerts, and 1 - 2 reserved for future use. | Message priority is 0 - 2, with 0 = normal priority used for pit-to car alerts, and 1 - 2 reserved for future use. | ||
Revision as of 23:27, 7 September 2020
Standard CAN broadcast for RaceCapture and PodiumConnect
The following describes the standardized broadcast messages for RaceCapture and PodiumConnect devices.
- Byte ordering: Little Endian
Alert Messages
This describes the CAN format for Pit to Car alert messages.
Messages are broadcasted in ASCII character format, with a maximum of 16 characters across two CAN messages.
Alert Messages are broadcast on CAN1.
Message priority is 0 - 2, with 0 = normal priority used for pit-to car alerts, and 1 - 2 reserved for future use.
Base address: 0xA100 (41216)
Address for message is calculated by the base address offset by priority:
- Priority 0 address: 0xA100 (41216) / 0xA101 (41217)
- Priority 1 address: 0xA102 (41218) / 0xA103 (41219)
- Priority 2 address: 0xA104 (41220) / 0xA105 (41221)
| CAN ID | Byte 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|---|
| Base Address | message character 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Base Address + 1 | message character 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
Timing and Scoring integration
CAN broadcast mapping for timing and scoring integration
Base address: 0xA200 (41472)
| CAN ID | What | Offset | Length | Formula | Units | Notes |
|---|---|---|---|---|---|---|
| 0xA200 (41472) | Last Timing & Scoring lap time | 0 | 2 | * .001 + 0.0 | min. | Last lap time as reported by timing and scoring system |
| 0xA200 (41472) | Position Overall | 2 | 1 | * 1 + 0 | ||
| 0xA200 (41472) | Position in Class | 3 | 1 | * 1 + 0 | ||
| 0xA200 (41472) | Competitor Number Ahead | 4 | 2 | * 1 + 0 | ||
| 0xA200 (41472) | Competitor Number Behind | 6 | 2 | * 1 + 0 | ||
| 0xA201 (41473) | Gap to Competitor Ahead | 0 | 2 | * 0.1 + 0.0 | sec. | Value will be zero if gap is 1 lap or greater |
| 0xA201 (41473) | Gap to Competitor Behind | 2 | 2 | * 0.1 + 0.0 | sec. | Value will be zero if gap is 1 lap or greater |
| 0xA201 (41473) | Laps to Competitor Ahead | 4 | 1 | * 1 + 0 | ||
| 0xA201 (41473) | Laps to Competitor Behind | 5 | 1 | * 1 + 0 | ||
| 0xA201 (41473) | Full Course Flag state | 6 | 1 | * 1 + 0 | 0=None; 1=Green; 2=Yellow; 3=Red; 4=Finish | |
| 0xA201 (41473) | Competitor Flag State | 7 | 1 | * 1 + 0 | 0=no flag; 1=Black Flag |
