TWAI - circuitlabs.net

CANopen Protocol Basics

Introduction to CANopen higher-layer protocol on ESP32. Understand SDOs, PDOs, and object dictionary concepts for industrial automation.

Implement the SAE J1939 protocol for heavy-duty vehicle communication on ESP32 using the TWAI controller. Handle PGNs and addressing.

Explore CAN with Flexible Data-Rate (CAN-FD) on compatible ESP32s. Learn benefits of higher data throughput and larger payloads with TWAI.

Use ESP32 TWAI to interface with OBD-II systems in vehicles. Read diagnostic trouble codes (DTCs) and real-time sensor data via CAN.

Understand CAN bus error states (Error Active, Passive, Bus-Off) and implement error detection and recovery mechanisms using ESP32 TWAI.

Implement hardware acceptance filters for ESP32 TWAI to efficiently process relevant CAN messages and ignore others, reducing CPU load.

Learn sending and receiving CAN frames (standard & extended IDs) using ESP32 TWAI. Handle data payloads and message arbitration on the bus.

Configure ESP32 TWAI controller: set bit timing, operating modes (Normal, Listen-Only), and initialize for CAN bus communication.

Intro to ESP32’s TWAI controller for CAN bus communication. Learn basics of the Two-Wire Automotive Interface, its applications, and benefits.