"No idcode detected" error on PCA10056 V1.0.0

[Vitaly]

Hi,

During evaluation of both nRF52840 Dev Kit and Dongle somehow the Dev Kit bootloader was erased. We were able to flash MCU firmware, but now J-Link is not able to connect to the target device - reporting "No idcode detected". We tried both from Segger Studio on Mac, JLink Commander on Win10 and nrfjprog on both Windows and Mac.

"nrfjprog --recover" doesn't help.

It looks like nRF52840 bootloader was erased as well and now the target is not able to communicate with MCU/J-Link. Is there any way to fix it? For example, is it possible to install the target bootloader thru nRF52840 own USB?

Thanks,

Vitaly

[Jørgen Holmefjord]

Hi,

Did you try to reflash the J-Link Interface MCU firmware? Hold the IF BOOT/RESET button while powering the board and drag the BIN file to the BOOTLOADER removable drive.

Best regards,
Jørgen

[Vitaly]

Hi,

Yes, multiple times - both with "J-Link OB-SAM3U128-V2-NordicSemi 170724.bin" on the DK download page you mentioned and with newer one proposed by J-Link Tools - see J-Link commander output below:

_____________________

SEGGER J-Link Commander V6.40 (Compiled Oct 26 2018 15:06:29)
DLL version V6.40, compiled Oct 26 2018 15:06:02
Connecting to J-Link via USB...O.K.
Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Jul 12 2018 11:44:41
Hardware version: V1.00
S/N: 683029873
VTref=3.300V

Type "connect" to establish a target connection, '?' for help
J-Link>connect
Please specify device / core. <Default>: NRF52840_XXAA
Type '?' for selection dialog Device>?
Please specify target interface: J) JTAG (Default) S) SWD T) cJTAG
TIF>S
Specify target interface speed [kHz]. <Default>: 4000 kHz
Speed>
Device "NRF52840_XXAA" selected.
Connecting to target via SWD
Found SW-DP with ID 0x2BA01477
Found SW-DP with ID 0x2BA01477
Could not power-up debug power domain.
Scanning AP map to find all available APs
AP[0]: Stopped AP scan as end of AP map has been reached
Iterating through AP map to find AHB-AP to use
Found SW-DP with ID 0x2BA01477
Found SW-DP with ID 0x2BA01477
Scanning AP map to find all available APs
AP[0]: Stopped AP scan as end of AP map seems to be reached
Iterating through AP map to find AHB-AP to use

****** Error: Could not find core in Coresight setup
Found SW-DP with ID 0x2BA01477
Found SW-DP with ID 0x2BA01477
Scanning AP map to find all available APs
AP[0]: Stopped AP scan as end of AP map seems to be reached
Iterating through AP map to find AHB-AP to use
Found SW-DP with ID 0x2BA01477
Found SW-DP with ID 0x2BA01477
Scanning AP map to find all available APs
AP[0]: Stopped AP scan as end of AP map seems to be reached
Iterating through AP map to find AHB-AP to use
Cannot connect to target.

_____________________ 

Thanks,

Vitaly

[Jørgen Holmefjord]

Have you modified the DK in any way (for instance for current measurement)? What position are all the switches on the DK in?

[Vitaly]

As far as I know, no modifications. Developer burned some example intended for dongle.

Switches:

LiPo/VDD/USB - VDD

nRF only/ default - default

Are there any jumpers to check?

Thanks!

[Jørgen Holmefjord]

Have you tried a different USB cable or flashing from another PC?