Tell us about yourself!
If that doesn't work. Call Germany ;)
Arduino branch, but useful with info and hookup. https://github.com/esp8266/Arduino/blob/master/doc...
http://www.espressif.com/sites/default/files/4a-esp8266_at_instruction_set_en_v1.5.4_0.pdfAT Commands are what the Esp is flashed with.
The rx/tx is how you communicate with it.rx pi -> tx esp ; tx pi -> rx esp Sometimes they need reversal, sometimes not. Like anything from China, sometimes things get reversed.I don't remember needing to flash new firmware on the ESP when I used an Arduino, just had to flash my Arduino.Assuming similar thing with pi.