ESP8266 Community Forum

- Mon Apr 06, 2015 9:42 am #13635 Yeah, the delay was one of the things I was trying to give the ESP a chance to respond. It doesn't work with or with out the delay in there.

using your exact sketch it still doesn't work. I still only get the point of writing the flash

Code: Select alldone
   espcomm_open
Uploading 30160 bytes from ~/Desktop/esp_blink.bin to flash at 0x00000000
   erasing flash
   espcomm_cmd: sending command header
   espcomm_cmd: sending command payload
   setting timeout 5000
   setting character timeout 50
   done
   setting timeout 1
   setting character timeout 1
   done
   espcomm cmd: receiving 2 bytes of data
   writing flash


I can get it to work by using the python version of esptool.py from the command line like this.
./esptool.py --baud 115200 --port /dev/cu.usbmodem142141 write_flash 0x00000 ~/Desktop/esp_blink.bin

that successfully uploads the sketch through the 32u4 to the ESP8266.

Maybe I will try though an ATmega and see if that is any different for some reason.

- Mon Apr 06, 2015 11:44 am #13645 That's a bummer
I'll see if I have a 3v3 32u4 board & give it a go.

Ian