Hi Sprite_tm,

Is there any progress on this subject? I also posted this issue to Sysprogs , but they refer to Espressif as being the developer of gdb-stub. I hope you will continue your efforts resolving this issue.
Thanks.

I suppose the designers of gdbstub chose this default behaviour because the esp8266 has only one hardware breakpoint....an armprocessor has 5 hb's, so after hitting a breakpoint in ram or flash they are always able to continue single stepping using the next free hb, the esp8266 cannot...

Hi there, First of all, great news there is a gdbstub available, it saves 4 IO pins. I have used VisualGdb and a jtag-device for debugging, but it was/is far from stable. To answer your question: It should be possible to single step through flash code, at least that was possible using jtag. First yo...