Ignore me, having one of those days... Seems this is working fine on revisions as described above, the thing that threw me is that the base path used when initializing the spiffs mount, in my case /spiffs seems to count towards the maximum name length defined by SPIFFS_OBJ_NAME_LEN. I had a path whi...

I'm also seeing the same issue with current mkspiffs at revision 1693a95 and release/v3.0 of esp-idf. Can mount the filesystem, can open the file, but every read results in 0 bytes and EOF state.

Exactly, the linked PR has been working reasonably well for me, have had no issues flashing since this change.

Filed this PR against the openocd-esp32 project to increase the timeout to 10s. Seems to do the job.

https://github.com/espressif/openocd-esp32/pull/24

Finally some progress figuring this thing out! Tried a few other speeds, reducing way down to 3khz. No joy. Then decided to revert my code change and try flashing again with usb. Worked fine. Flashed the same code with jtag, worked fine. After some binary chopping it appears that if my code has this...

What the hell? Started failing again. No changes, worked last night, doesn't work this morning.

I lowered the speed to 10mhz with no improvement.

Well, I am thoroughly confused.

I haven't changed anything, and its started working!

I did remove a usb hub that I had plugged in (that wasn't in any way connected to any of my devices). I wonder if it was interfering somehow?

Hi Alexey, Thanks for pitching in! I ran the same process on the hello_world example (I had it precompiled so it was handy), same result: $ bin/openocd.exe -s share/openocd/scripts -f interface/ftdi/tumpa.cfg -f board/esp-wroom-32.cfg -c "program_esp32 hello-world.bin 0x10000 verify exit" Open On-Ch...

Nobody?

Could really do with this working, and by all accounts it should work. Its a real pain to flash over serial and then have to plug the jtag back in to debug.

Any suggestions?

Forgot to include some relevant bits of info.

I'm running Windows 10 Home Edition, and attempting to flash a Sparkfun ESP32 Thing.

I also tried compiling the latest version of the modified OpenOCD version from source, with exactly the same results.