warning: espcomm_sync failed error: espcomm_open failed error: espcomm_upload_me

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1

I get the warning " warning: espcomm_sync failed"
and the errors :
error: espcomm_open failed
error: espcomm_upload_me

I have Arduino uno connected to ESP8266 ESP-12
Any ideas what is wrong?

2

You are in the Arduino 101 board section.

However from the error it looks like you are trying to upload directly to the ESP module.
Based on that small clue you should include both a schematic and the code you are using.