Changelog

All notable changes to Tesla Open CAN Mod are documented here.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

FSD activation bypass for HW3 and HW4 vehicles
BYPASS_TLSSC_REQUIREMENT build flag to bypass Tesla Live Service SC requirement for regions without traffic light toggle
Autosteer nag suppression via CAN frame interception
Autosteer Nag Killer hardware mode: echoes CAN frame 0x370 with counter+1 to suppress nag at hardware level (X179 connector, CAN bus 4)
ISA speed chime suppression for HW3 and HW4
Emergency vehicle detection and response
Speed profiles support (distance control stalk mapped)
Smart Summon support (EU region restriction removed)
ESP32 web dashboard for live CAN status and runtime settings
OTA firmware updates via web interface for ESP32 boards
Hardware support: Adafruit Feather RP2040 CAN
Hardware support: Adafruit Feather M4 CAN Express (tested)
Hardware support: ESP32 with TWAI driver
Hardware support: Adafruit Feather ESP32 V2 with MCP2515 CAN Featherwing
Hardware support: M5Stack Atomic CAN Base
Hardware support: LILYGO T-CAN485
CAN driver abstraction layer (MCP2515, SAME51, TWAI)
TWAI driver: non-blocking TX, bus-off cooldown and recovery, driver-fail guard
TWAI driver: DLC clamped to 8 bytes on read and send
DLC validation guards on all CAN frame handlers
Bounds check in setBit() to prevent buffer overrun
STL case model for Feather RP2040 CAN
FSD subscription guide for unsupported regions (Canadian account method)
Wiring guide for Tesla Model 3/Y including legacy connector pinouts
Comprehensive NagHandler unit test suite

Nag handler torque value: output is now fixed at safe 1.80 Nm (0x08B6) instead of copying torque from the original frame
FSDEnabled variable shadowing bug in HW3 and HW4 handlers
TWAI TX timeout changed from 0 ms to 2 ms to avoid bus starvation

Build flag renamed from FORCE_FSD / FORCE_FSC to BYPASS_TLSSC_REQUIREMENT for clarity
Arduino sketch renamed from canFeather.ino to RP2040CAN.ino for multi-board support
Firmware configuration consolidated: all user-selectable options moved to sketch_config.h