Hi,

I am getting the error message above on J-Link Lite, while trying to access STM32F417 with J-Link SW 5.12g.

I get proper connection, on the same target but from a different PC that runs version 4.96.


The J-Link commander gives the following messages:



SEGGER J-Link Commander U5.12g (Compiled May 27 2816 16:58:24)
DLL version U5.12g. compiled May 27 2816 16:57:47
Connecting to J-Link Uia USB...0.K.
Firmware: J-Link ARM Lite V8 compiled Oct 29 2014 09:03:16
Hardware uersion: U8.00
S/N: 228286226
License(s): CDB
UTref = 3.254U
Type "connect" to establish a target connection, ’?’ for help
-Link)connect E
Please specify deUice / core. (Default): STM32F417IC
Type ’?’ for selection dialog
Device)
Please specify target interface:
J) JTQC (Default)
3) SWD
TIF>
Specify position in JTAG chain (IRPre,DRPre) : -1.-1 => fluto-detect
JTAGConf>
specify target interface speed [kHz]. (Default): 4000 kHz
speed
Device "STM32F417IC" selected.
Could not measure total IR len. TDO is constant high.
STM32 (connect): Can not attach to CPU. Trying connect under reset.
Could not measure total IR len. TDO is constant high.
Could not measure total IR len. TDO is constant high.
STM32 (connect): Can not attach to CPU. Trying connect under reset.
Could not measure total IR len. TDO is constant high.
Error: STM32: Connecting to CPU Uia connect under reset failed.
Could not measure total IR len. TDO is constant high.
STM32 (connect): Can not attach to CPU. Trying connect under reset.
Could not measure total IR len. TDO is constant high.
Could not measure total IR len. TDO is constant high.
[img]c:\avishai\segger_problem.jpg[/img]


Pleeease help
Avishai ?(

I dont have the SWD pins connected. Only JTAG

Avishai

Its working with SWD

But how can it be if the SWD pins are NC?
I connected only the JTAG ones ?(


Thanks,
Avishai