NRF51822 Heart Rate Demo is not working

[Li]

Hi All,

Just got my NRF51822 development board today and cannot get the heart rate demo from SDK to work. Two issues:

1> The PCA1004 board (the one without antenna) cannot be recognised by the debugger at all. In NrfGo Studio, it just shows "no device connected" no matter how I tried to click the recover button.

2> The PCA 1005 board works fine. It works with the blinky demo (Although only light 0,1 light up). However, when I tried to run the HR demo from the SDK, no indicating light and the master doggle cannot discover it. I have flashed the latest softdevice 6.0.0 before I download the program. I 've also changed the IROM1 to 0x14000, IRAM1 to 0x20002000. Both sizes are 0x4000 (cannot make them smaller or the program won't compile under Keil uvision 4.52. )

Tried to search for solutions but got no luck.

Any help on this will be much appreciated!!

Thanks

L.

[Li]

from J-link commander, what I saw is shown pics.

Thanks!!

[Ole Morten]

I can't say I've seen this before. Can you please take a photo of your complete setup? Also, please verify that you have connected your J-Link correctly to your board.