mirror of
https://github.com/esphome/esphome.git
synced 2025-11-18 15:55:46 +00:00
77242c65ed
Implements native CANBus transport for the packet_transport component,
enabling ESPHome nodes to share sensor and device data over physical
CAN bus networks.
Key features:
- Packet fragmentation to handle CAN's 8-byte frame limit
- Uses 7 bytes per frame for payload (1 byte for sequence/flags)
- Configurable CAN ID (default 0x600) and extended ID support
- Sequence tracking with error detection and recovery
- Compatible with all packet_transport features (encryption, rolling codes, ping-pong)
Use cases:
- Marine applications with existing CAN bus networks
- Automotive battery management and motor controller data sharing
- Industrial automation sensor networks
Configuration example:
```yaml
canbus:
- platform: esp32_can
id: my_can
tx_pin: GPIO5
rx_pin: GPIO4
can_id: 4
bit_rate: 125kbps
packet_transport:
platform: canbus
canbus_id: my_can
can_id: 0x600
sensors:
- my_sensor
providers:
- name: remote-device
encryption: "encryption key"
```
Implements: https://github.com/orgs/esphome/discussions/3255
Tests for ESPHome
This directory contains some tests for ESPHome.
At the moment, all the tests only work by simply executing
esphome over some YAML files that are made to test
whether the yaml gets converted to the proper C++ code.
Of course this is all just very high-level and things like unit tests would be much better. So if you have time and know how to set up a unit testing framework for python, please do give it a try.
When adding entries in test_.yaml files we usually need only
one file updated, unless conflicting code is generated for
different configurations, e.g. wifi and ethernet cannot
be tested on the same device.
Current test_.yaml file contents.
| Test name | Platform | Network | BLE |
|---|---|---|---|
| test1.yaml | ESP32 | wifi | None |
| test2.yaml | ESP32 | ethernet | esp32_ble_tracker |
| test3.yaml | ESP8266 | wifi | N/A |
| test4.yaml | ESP32 | ethernet | None |
| test5.yaml | ESP32 | wifi | ble_server |
| test6.yaml | RP2040 | wifi | N/A |
| test7.yaml | ESP32-C3 | wifi | N/A |
| test8.yaml | ESP32-S3 | wifi | None |
| test10.yaml | ESP32 | wifi | None |