AnsweredAssumed Answered

STM32L151 jtag problem

Question asked by polyakov.mikhail on Apr 8, 2012
Latest reply on Apr 9, 2012 by rosarium
Hello !

I I start working with STM32L151  + Keil + ULINK2 ,  and  met a problem : after some code,  likely  it was  scommand 
GPIOA->BSRRL=GPIO_BSRR_BS_2;
processor stop the debugging, and a can not start  a new debugging or program or erase
it  flash ,  in all cases I see message "Jtag communication failure" . Moreover, I found that  processor holds NRST low !  On my board BOOT0 connected to ground and BOOT1
is not connected to anything.
Please explain me what happened to the processor and how to get it in working.

Thank you!




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