ESP8266 Community Forum

- Fri Apr 17, 2015 7:23 am #14808 Have you these connections?
CH_PD -> HIGH
GPIO2 -> HIGH
GPIO15 -> LOW

Try also changing the GPIO0.

- Sat Apr 18, 2015 1:07 pm #14924 if I can flash nodemcu to chip then the problem cant be wiring?
maybe its something with board.txt?

- Sat Apr 18, 2015 1:14 pm #14926 What about with https://github.com/anakod/Sming?

- Sat Apr 18, 2015 2:54 pm #14934 it could be an issue with the esptool bundled with the arduino ide fork if you can upload ok with nodemcu.

i got esptool.py (as used by nodemcu) working by changing these lines in platform.txt

Code: Select alltools.esptool.cmd=esptool
tools.esptool.upload.pattern="{path}/{cmd}" {upload.verbose} -cd {upload.resetmethod} -cb {upload.speed} -cp {serial.port} -ca 0x00000 -cf "{build.path}/{build.project_name}_00000.bin" -ca 0x40000 -cf "{build.path}/{build.project_name}_40000.bin"

to:

Code: Select alltools.esptool.cmd=esptool.py
tools.esptool.upload.pattern="{path}/{cmd}" --port {serial.port} write_flash 0x00000 "{build.path}/{build.project_name}_00000.bin" 0x40000 "{build.path}/{build.project_name}_40000.bin"


and putting a copy of esptool.py in (arduino directory)/hardware/esp8266com/esp8266/tools/linux/

also check your wiring - i just had the exact same problem and it was a dodgy wire from vcc to ch_pd, so ch_pd was floating all over the place according to the multimeter