AnsweredAssumed Answered

STM32F215 SWD connexion impossible

Question asked by rocca.stephane on Nov 11, 2014
Latest reply on Nov 12, 2014 by karpavicius.linas
Hi all,
Our new board arrived yesterday but I can't even connect via SWD. Could you please help us to find the problem ?
BOOT0 =  pull down via external 10K resistor
BOOT1 = direct connexion to GND

SWD are well routed, but I can't see any level on the SWD pins : 0V on every pin.

When the ST-Link v2 is acting on JTRST : no response from MCU.

The same problem is encountered on 2 different boards.
We tried with NRST pin floating, or with NRST in direct connection to VDD : same behaviour...

What do you think about please ?

[EDIT] = no response too by USART1 bootloader...

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