ESP8266 Community Forum

- Tue Sep 02, 2014 1:55 pm #113 The Xtensa core used in the ESP8266 has support in OpenOCD. OpenOCD works with common ARM JTAG units. JTAG is the same everywhere so these 'ARM' JTAGs should work on the ESP8266 too.

JTAG has several advantages. It can use several different schemes to program the flash chip. JTAG can also provide source level debugging and single step. OpenOCD is already integrated with gdb.

As soon as someone get some hardware it would interesting to see what you can do with OpenOCD.

Where I get my modules

- Tue Sep 02, 2014 2:00 pm #116 wouldn't wrtiting to the flash require a small application running on the controller transferring the received bytes to the connected flash controller?
aka flash loader?

- Tue Sep 02, 2014 4:03 pm #120 Mind you: it's not an arm; it's an Xtensa architecture proc. There also seems to be an openocd-variant for that, though.

- Tue Sep 02, 2014 4:51 pm #122 on the leaked VM there is XT-OCD (C:\usr\xtensa\XtDevTools\downloads\RC-2010.1\tools\xt-ocd-8.0.1-windows-installer.exe).
One can use then usbwiggler from Macraigor, or even LPT Wiggler.

Regards flash, in the leaked VM there is as well XTCOM_UTIL.exe tool. It seems to be kind of flasher over UART i think.
I don't have (yet) any hardware so can't test these things.

I don't want to be human! I want to see gamma rays, I want to hear X-rays, and I want to smell dark matter ...
I want to reach out with something other than these prehensile paws and feel the solar wind of a supernova flowing over me.