ESP8266 Not Flashing

Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming)
 Reply

User avatar

Re: ESP8266 Not Flashing

By eduperez
- Mon Feb 01, 2016 8:25 am #40159 GPIO2 must be HIGH, both to upload a firmware, and to boot normally.
GPIO0 must be LOW to upload firmware, and HIGH to boot normally.
User avatar

Re: ESP8266 Not Flashing

By Josh Blease
- Mon Feb 01, 2016 1:53 pm #40184 I've just tried to pull GPIO2 high, but still no luck.
The way the blue serial LED is flashing on the ESP in sync with the LED on the usb adaptor, suggests that there is an issue with the Tx pin on the ESP. I've ordered a couple more new ones to see if it is the ESP that's causing me trouble.
 Reply
Return to Hardware Specific