Getting started, can't connect to nRF51 dev board

[Brian]

Hey guys,

Sorry to a basic question here, but it's been a few hours and I still can't get a connection to either of two brand new nRF51 dev boards, trying both on WindowsXP and MacOS.

See attached screenshot for Windows XP. JLink.exe seems to connect, but when I try to load the blinky .hex file via the Windows app J-Flash, it says "Error: Could not perform target reset"

Same in MacOS, typing JLinkExe... SEGGER J-Link Commander V4.96l ('?' for help) Compiled Feb 25 2015 10:24:59 DLL version V4.96l, compiled Feb 25 2015 10:24:52 Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Nov 28 2014 10:32:04 Hardware: V1.00 S/N: 681313228 VTarget = 3.300V 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. Target interface speed: 100 kHz

Alright... this has got to be a simple answer here for something I'm missing. Pretty bad initial experience here with Nordic tools.

Thanks so much! Brian

[RK]

If you are loading blinky at 0x16000 then that would indicate you are building to use with a softdevice, have you put a softdevice on? Or if you are building basic blinky with no softdevice then the code builds for, and goes at, 0x00000.