Is there a way to know if MQTT messages have been sent from the device?

ESPHome
1

I’m using deep sleep for a battery powered esp32 board. When the device wakes up from sleep, I make sure MQTT is connected, and then I force an update from my sensors. I want to put the device back to sleep as soon as possible, but I also don’t want to lose the sensor updates over MQTT. The only reliable way I have found to do it is to delay a short time before calling the deep sleep enable. If I could know when the MQTT messages were cleared out from the esp32, I wouldn’t have to rely on the short delay.

2

How about also listening for those mqtt msgs? And then only when they are received again (by the sender) you do deep sleep enable?

3

Interesting idea, @sj3fk3. I hadn’t been thinking about it in that direction (it could add additional delay, depending on factors outside the device), but it’s probably a pretty good scheme if I can’t find a way to know when the message has drained from the device.

Thanks.

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