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stm32 discovery external supply problem

Question asked by asecen on May 16, 2013
Latest reply on Mar 11, 2016 by Clive One
I would like to program my stm32 discovery board via st-link, to do this i am trying to power my board externally by using 5V pin. However, when i powered the board, ld1 com turns red, but it blinks. In this case, the program loaded in board runs, but i am not able to connect to it via st link; it gives an error that 'no target connected'. Do you have an idea about the problem here? 

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