Search found 2 matches

by Erik84750
Mon Oct 15, 2018 5:25 pm
Forum: General Q&A
Topic: ESP8266 bootloader/programming mode
Replies: 0
Views: 2891

ESP8266 bootloader/programming mode

To get ESP8266 in programming mode GPIO 00 must be pulled low on start-up. I use DTR from a serial interface to obtain this low pulse, which also is used to reset the MCU. So when the serial interface wants to start writing, it sends a low through DTR which is used to pull low CH_PD as well as GPIO ...
by Erik84750
Mon Sep 25, 2017 5:06 pm
Forum: General Q&A
Topic: ESP8266 NodeMCU v1.0: no response on USB-serial connection
Replies: 1
Views: 1628

ESP8266 NodeMCU v1.0: no response on USB-serial connection

Using USB-serial board with FTDI connection and AccessPort ( http://www.usconverters.com/index.php?main_page=page&id=15&chapter=0 ) monitor no response on AT commands is achieved. The serial board is tested with loopback connection and performs ok. Connections: 1. 3V3 connected to serial boa...

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