Hello,
I have J-Link connected to a STM32 evaluation board. Everything looks fine. The board is flashable as often as I like to flash. As soon as I flash software which disables the STM's JTAG interface by remapping the appropriating pins to its alternative function, I get the problem that the STM seams to be no longer flashable.
This J-Link ARM V3.90d Error windowpops up: "Could not find supported CPU core on JTAG chain".
I expected that J-Link uses the strategy "connect under reset" per default what should make a switched off JTAG available again. I did not find an opportunity to set or change the connect strategy but I'm afraid I have to. The logging Segger J-Link ARM V3.90d control panel just tells this:
SEGGER J-Link ARM V3.90d DLL Log
DLL Compiled: Sep 1 2008 13:56:39
Logging started @ 2010-05-31 11:49
T0964 000:031 JLINKARM_Halt()
best regards
Stefan
I have J-Link connected to a STM32 evaluation board. Everything looks fine. The board is flashable as often as I like to flash. As soon as I flash software which disables the STM's JTAG interface by remapping the appropriating pins to its alternative function, I get the problem that the STM seams to be no longer flashable.
This J-Link ARM V3.90d Error windowpops up: "Could not find supported CPU core on JTAG chain".
I expected that J-Link uses the strategy "connect under reset" per default what should make a switched off JTAG available again. I did not find an opportunity to set or change the connect strategy but I'm afraid I have to. The logging Segger J-Link ARM V3.90d control panel just tells this:
SEGGER J-Link ARM V3.90d DLL Log
DLL Compiled: Sep 1 2008 13:56:39
Logging started @ 2010-05-31 11:49
T0964 000:031 JLINKARM_Halt()
best regards
Stefan