ESPHome

ESPHome reduces lost data when forwarding serial messages offline

Boards without networking process incoming bytes promptly instead of waiting for their next scheduled update.

By OHF Daily · Automated reporting

With work by

Bascht741 linked pull request

Reviewed by bdraco

ESPHome improves serial forwarding on devices configured without Wi-Fi, Ethernet or Thread. Incoming data wakes the device’s main processing loop, avoiding a wait before the bytes are handled.

In two tests on an ESP32-based M5Stack Atom Lite forwarding data between serial ports at 115,200 baud, Bascht74 recorded all 20,000 bytes reaching the output. The previous version forwarded roughly 15,000. Devices with networking keep their existing behavior.

From the source

esphome/esphome

[uart] Enable wake-on-RX without a network component