ESP8266 Community Forum

So there is actually Hardware JTAG support? How come 'JTAG' is not mentioned even once in the ESP8266 Datasheet or Technical Reference Manual if there is hardware support for JTAG?

From https://bbs.espressif.com/viewtopic.php?t=1666 - Jan 22, 2016

Current ESP8266EX does not support the hardware debug tools, like JTAG. So you need to debug by log print.

Refering to my earlier posts in this thread, visit http://www.visualgdb.com. Take a look at their tutorials. They are using VisualStudio as IDE. Using the OpenOcd driver (plus JTAG-interface) you are free to use Eclipse as well....