Add Debugging via GDB stub

[universam1]

Debugging via GDB stub is available: https://github.com/esp8266/Arduino/tree/master/libraries/GDBStub

Would be a killer feature for PlatformIO!

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[ivankravets]

We tested that and it does not work properly :(

Does it work for you?

[universam1]

Here is a good introduction: http://hackaday.com/2015/12/12/squash-your-esp-8266-bugs-with-esp-gdbstub/

Actually I was hoping of PIO, guess they should be able to get some support by Espressif likely

[minkir014]

Any thing new about this issue?

[augustozanellato]

Any news? I could try it this evening probably

[maxgerhardt]

For reference: https://github.com/sysprogs/esp8266-openocd promises to be a fully-featured OpenOCD version for the ESP8266, so JTAG debugging should be possible with it, next to the here-mentioned GDBstub over UART.