CAN FDL Demo

Saanvi Kodiganti

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1

Introduction

• CAN (controller area network) is a communication interface that enables reliable data exchange between devices across extended distances
• CAN FDL supports remote control edge applications as OEMs shift toward centralized compute and fewer edge MCUs
• Centralized software for over-the-air (OTA) updates
• Reduces load wiring length
• Reduces cost
• Common edge node interests
• Windows
• Car seats
• Mirrors

2

Demo Overview

Goal: Demonstrate to OEM customers how TI components can implement a remotely controlled edge node using CAN communication.

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1. Wrote software to enable Zone Reference Design to conduct CAN signal transmission from the AM263P
1. Initialized TCAN1043 to take in digital signals and emit CANH/CANL
2. Configured the TCAN5102 EVM to receive CAN FDL messages and emit SPI
3. Implemented pipeline interfacing with a motor driver to actuate a car seat
4. Conducted benchtop latency testing of various commands to quantify efficiency

3

Pipeline

4

Motor Driver

Edge Node

Video Demonstration

• All logic is stored in the zone board (top left), which is remotely controlling the motor driver
• It can control speed and direction while polling registers to determine current state
• Future work would involve incorporating a control loop (for scenarios such as pinch detection)

*may need to open in Chrome*

Latency Testing

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1

2

3

4

124 µs

59 µs

24 ns

Motor Driver

Write Command

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Read Command

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Two SPI messages must be sent out to read from a register, increasing latency

1. Request to read
2. Request to get data off of the bus

Polling

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