brambo123

> There must be some sort of buffer, because writes don't delay for either ESP32 or ESP8266 when using the hardware uart. It does delay if I `flush` it. And...

> I tested it on both ESP8266 and ESP32 and had 0 delays on both. Are you sure it wasn't something else with your component? Please test with the modbus...

> > [W][component:214]: Component sdm_meter.sensor took a long time for an operation (0.15 s). > > Which version of ESPHome are you using? I would expect all times in msec...

I encountered the first problems on an ESP32-S3. Maybe it works a little differently there. I just don't know if I still have such a module to test, I'll have...