How to build I2C send and receive API using example project drivers of STM8S003

[Vpal.11]

Firstly I am noob in STM8 world :)

I am trying to establish I2C connection between esp8266 wifi as master and STM8S003 micros as slave, so I am able to detect STM8S003 device id on esp wifi side but I do not know how to build send and receive API using these default driver to achieve data exchange betwwen esp wifi and STM8.

[prain]

There are some I2C slave examples in STM8 SPL library.