ESP8266 Community Forum

- Fri Sep 18, 2015 3:05 am #29320 Vader, your sketch seems to miss Serial.flush. Take a look at this post:
https://github.com/esp8266/Arduino/issu ... -108224612

- Fri Sep 18, 2015 10:30 am #29360 Thanks for your responses. I used the code with the Serial.flush() but I am getting the same error.
I also tried DIO mode. Same error.

I am not sure if I am booting the ESP right. I connected Reset, CH PD to 3,3 V and GPIO0 to GND. After this I switch off/on the power supply.
Then I am pressing the upload button.
Always if the Arduino Tx LED flashes, the blue ESP LED flashes. But not the Arduino Rx LED.
If I am connecting GPIO2 to GND, the blue LED doesn't flash.

It looks like the Arduino is sending some data to the ESP, the ESP is receiving them, but doesn*t answer .