ESP8266 Community Forum

- Tue Jun 28, 2016 6:16 am #49901 Hi. I use that scenario the other way around. The esp8266 is i2c master and I connect to a Atmega device which is an i2c slave. I use the nativ SDK for development. As the esp8266 device is the main power consumer in my application I send the esp to deepsleep and it wakes up frequently to retrieve data from the Atmega an post it using HTTPS. It is also possible to let the Atmega wakeup the esp e.g. in case of a threshold violation to transmit data as soon as possible.