Nordic Detection!!

[Sudipta Banerjee]

Hi, Actually In our application we have a battery, by external source we can charge it. Now when we connect battery or external power supply directly no error is coming. But when we connect both, it giving following error...

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SEGGER J-Link Commander V4.76d ('?' for help) Compiled Sep 13 2013 16:35:24 DLL version V4.76d, compiled Sep 13 2013 16:35:06 Firmware: J-Link ARM V8 compiled Jul 17 2013 11:24:15 Hardware: V8.00 S/N: 17935099 Feature(s): RDI,FlashDL,FlashBP,JFlash VTarget = 3.481V Info: Found SWD-DP with ID 0x0BB11477

****** Error: Could not power up debug port: Control/Status register reads 10000 000 Info: Found SWD-DP with ID 0x0BB11477

****** Error: Could not power up debug port: Control/Status register reads 10000 040 No devices found on JTAG chain. Trying to find device on SWD. Info: Found SWD-DP with ID 0x0BB11477

****** Error: Could not power up debug port: Control/Status register reads 10000 040 Info: Found SWD-DP with ID 0x0BB11477

****** Error: Could not power up debug port: Control/Status register reads 10000 040 No device found on SWD. Did not find any core. Failed to identify target. Trying again with slow (4 kHz) speed. Info: Found SWD-DP with ID 0x0BB11477 Info: Found Cortex-M0 r0p0, Little endian. Info: FPUnit: 4 code (BP) slots and 0 literal slots Found 1 JTAG device, Total IRLen = 4: Cortex-M0 identified.

Can anyone tell me what this error about?? or for what reason it's coming??

[Ole Morten]

I can't say that I've seen this error before. Could you please share the schematics for your design? If you don't want to do this in the open, feel free to create a support case here and submit it there.