ESP32 Forum

I'm developing a system based on Esp_Now and Lora with which I send orders to carry out remote processes, that is, I need to keep them on alert but in a sleep state because else, the battery runs out in a short time. The problem is that I don't know how to wake them up when an external message arrives. The system works fine without sleep mode. Can somebody help me?
I'm grateful in advance.

Jorge.

With ESP-Now? I don't think there is a way to keep the radio online while using deep sleep; if any, that would use a fair amount of power even if possible. The 'canonical' way to solve that is by telling the other side 'I'm going to sleep for a minute, please buffer any messages you'd want to send to me', and the other side batch sending all buffered messages after that. (Similar to DTIM in WiFi)