ST-link communication failure

[Andrew Waterworth]

Posted on January 31, 2018 at 20:46

Can anybody enlighten me as to why I am getting the( Error: jtag status contains invalid mode value - communication failure)  message and how to get past it!

The set up is system work bench.

Nucleo F401 and x-nucleo-idw01m1

and stm demonstration software examples.

Nucleo server socket example compiles and down loads to board,

The console shows it halted by debugger and some 5-10 secs later it reports the above error.

I have tried the DBGMCU_Config and that does nothing to stop the problem.

I did have it working and managed to load some dynamic web pages into the wifi chip.

I managed to corrupt the source code so deleated the original and reloaded the code from STM,  since then no joy

Help would be very much appreciated

#st_link

[Tesla DeLorean]

Posted on January 31, 2018 at 22:06

OpenOCD frequently has more issues, try testing with ST-LINK Utilities.

Select SWD mode, the NUCLEO doesn't wire a full JTAG interface.

Use high quality USB cables.

Try System Work Bench forum for specific tool support and issues.

http://www.openstm32.org/forums