There are some implementation for clock stretching, eg: core_esp8266_si2c.c
and Frida posted, that she has implemented clock stretching http://forum.espruino.com/comments/12973407/
@MaBe started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
There are some implementation for clock stretching, eg: core_esp8266_si2c.c
and Frida posted, that she has implemented clock stretching http://forum.espruino.com/comments/12973407/