Hi,
I am a new owner and user of a J-LINK EDU. When I try to connect it to my Cortex M0 board through the SWD port I get the following message. Can you tell me what the WARNING means and how to fix it.
Thanks and Regards,
Nick
SEGGER J-Link Commander V5.00k ('?' for help)
Compiled Jul 31 2015 15:49:17
DLL version V5.00k, compiled Jul 31 2015 15:48:52
Firmware: J-Link V9 compiled Jun 23 2015 10:00:59
Hardware: V9.30
S/N: 269305033
OEM: SEGGER-EDU
Feature(s): FlashBP, GDB
Emulator has Trace capability
VTarget = 3.293V
Info: TotalIRLen = ?, IRPrint = 0x..000000000000000000000000
Info: TotalIRLen = ?, IRPrint = 0x..000000000000000000000000
No devices found on JTAG chain. Trying to find device on SWD.
Info: Found SWD-DP with ID 0x0BB11477
**************************
WARNING: Could not power-up debug power domain.
**************************
**************************
WARNING: Could not power-up debug power domain.
**************************
**************************
WARNING: Could not power-up debug power domain.
**************************
****** Error: Cortex-A/R check: Communication error when trying to read IDR of A
P[0].
Cortex-A/R (connect): Communication error when trying to read IDR of AP[0].
Info: Found SWD-DP with ID 0x0BB11477
**************************
WARNING: Could not power-up debug power domain.
**************************
**************************
WARNING: Could not power-up debug power domain.
**************************
**************************
WARNING: Could not power-up debug power domain.
**************************
****** Error: Cortex-A/R check: Communication error when trying to read IDR of A
P[0].
Cortex-A/R (connect): Communication error when trying to read IDR of AP[0].
No device found on SWD.
Trying to find device on FINE interface.
No device found on FINE interface.
Did not find any core.
Failed to identify target. Trying again with slow (4 kHz) speed.
No devices found on JTAG chain. Trying to find device on SWD.
No device found on SWD.
Trying to find device on FINE interface.
No device found on FINE interface.
Did not find any core.
No device found at all. Selecting JTAG as default target interface.
J-Link>
I am a new owner and user of a J-LINK EDU. When I try to connect it to my Cortex M0 board through the SWD port I get the following message. Can you tell me what the WARNING means and how to fix it.
Thanks and Regards,
Nick
SEGGER J-Link Commander V5.00k ('?' for help)
Compiled Jul 31 2015 15:49:17
DLL version V5.00k, compiled Jul 31 2015 15:48:52
Firmware: J-Link V9 compiled Jun 23 2015 10:00:59
Hardware: V9.30
S/N: 269305033
OEM: SEGGER-EDU
Feature(s): FlashBP, GDB
Emulator has Trace capability
VTarget = 3.293V
Info: TotalIRLen = ?, IRPrint = 0x..000000000000000000000000
Info: TotalIRLen = ?, IRPrint = 0x..000000000000000000000000
No devices found on JTAG chain. Trying to find device on SWD.
Info: Found SWD-DP with ID 0x0BB11477
**************************
WARNING: Could not power-up debug power domain.
**************************
**************************
WARNING: Could not power-up debug power domain.
**************************
**************************
WARNING: Could not power-up debug power domain.
**************************
****** Error: Cortex-A/R check: Communication error when trying to read IDR of A
P[0].
Cortex-A/R (connect): Communication error when trying to read IDR of AP[0].
Info: Found SWD-DP with ID 0x0BB11477
**************************
WARNING: Could not power-up debug power domain.
**************************
**************************
WARNING: Could not power-up debug power domain.
**************************
**************************
WARNING: Could not power-up debug power domain.
**************************
****** Error: Cortex-A/R check: Communication error when trying to read IDR of A
P[0].
Cortex-A/R (connect): Communication error when trying to read IDR of AP[0].
No device found on SWD.
Trying to find device on FINE interface.
No device found on FINE interface.
Did not find any core.
Failed to identify target. Trying again with slow (4 kHz) speed.
No devices found on JTAG chain. Trying to find device on SWD.
No device found on SWD.
Trying to find device on FINE interface.
No device found on FINE interface.
Did not find any core.
No device found at all. Selecting JTAG as default target interface.
J-Link>