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stm32 link utility: core is held in reset

blaz
Associate
Posted on November 15, 2012 at 18:53

First i had problems with the ST-Link drivers, then I had success with installing them. Now I get ''core is held in reset'' error in st-link utility.

How to fix this? My only idea is that I shorted something when I was messing with setting boot0 to high.
1 REPLY 1
frankmeyer9
Associate II
Posted on November 15, 2012 at 21:08

How to fix this? My only idea is that I shorted something when I was messing with setting boot0 to high.

 

Shouldn't that be detectible with an ohmmeter ?

Or you could power the board up, and measure the voltage on the pin.

If there is a short, you are probably on your own to spot it ...

... when I was messing with setting boot0 to high.

As such issues happen from time to time, I have prepared a small board with a switch to pull BOOT0 up, and a level shifter for the UART. For the connection, I have soldered short wires on, that end in singled-out female connectors matching on the discovery board connectors. That way, you can connect it quickly on all boards, and get it back running.