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Activatating ST-Link crashes STM32F429I-DISC1 discovery board

Question asked by goldman.craig on Jun 26, 2016
Latest reply on Jun 28, 2016 by Clive One
I am trying to download code to my STM32F429I discovery board using KEIL tools.

I enter "Configure Flash Tools" - Debug Tab; and press on "Settings" next to ST-Link Debugger.  The running demo stops; the COM Led (LD1) rapidly flashes red/green then stops; and the window reports "ST-LINK USB communications error".  If I close the "Settings" window and re-open it, it reports "No ST-LINK detected".  The board appears like it has "crashed" or held in reset.  If I unplug the discovery board and plug it in again.  I can repeat the process.

If I just try to Download, I get "No JTAG Devices Found"

I just downloaded the new ST-Link V2 driver; according to the KEIL tools the version is V2J24S12.

Can anyone help?  Sorry if this is a repeat; this seems like it would be a common problem.  I searched the forum but I did not find a discussion of this situation.

If it makes a difference, I am running Windows 7.
-Craig Goldman

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