Hello,
I’ve bought “ESP8266 serial WIFI Witty cloud Development Board ESP-12F module”. Module came preprogrammed with RGB led test application, i.e. RGB led constantly smoothly changes color.
http://www.aliexpress.com/item/ESP8266-serial-WIFI-Witty-cloud-Development-Board-ESP-12F-module/32597876082.html
But cannot debug it and probably cannot flash either.
When I plug in module-s lower USB I see COM port (USB-SERIAL CH340) in device manager. So I selected “Bootloader + GDB Stub” debug method, specified COM port. When I try to run HTTP sample, it first successfully compiles. Than, I see blue led flashing synchronously with programming progress. It stops flashing when progress stops, and continues with progress. But, than I see “Reply contains invalid hex digit NN” (where NN is random decimal number, I saw at least ten different) and nothing happens. Also, when I reset device RGB test starts over, so nothing was actually flashed.
What should I do to flash and debug module?