• State Not Answered
  • Replies 8 replies
  • Subscribers 62 subscribers
  • Views 8190 views
  • Users 0 members are here
Attachments (0)
Nordic Case Info
  • Case ID: 120741
Options
This post is older than 2 years and might not be relevant anymore
More Info: Consider searching for newer posts

Unable to flash due to high reset pin

Bjarne Kvæstad

Hi

I'm currently working on the 10028 DK board, which was working flawlessly until I used the J-link RTT Viewer, and pushed the IF BOOT/RESET-button. Now, when I try to flash the MCU I get this in Keil:

*JLink Info: Device "NRF51422_XXAC" selected. JLink info:

DLL: V5.12f, compiled May 17 2016 16:03:35 Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Nov 14 2016 16:58:29 Hardware: V1.00 S/N : 681151478
**JLink Warning: RESET (pin 15) high, but should be low. Please check target hardware. ***JLink Error: Communication timed out: Requested 20 bytes, received 0 bytes ! Could not read hardware status! Error: Flash Download failed

  • Target DLL has been cancelled

I've tried to update to the newest J-Link bootloader, with no luck I've tried to recover the device as explained here, but get this output:

nrfjprog --recover --family NRF51

Recovering device. This operation might take 30s. ERROR: Cannot connect to any nRF device. Please make sure a device is ERROR: connected to the debugger and supplied.

Using nRFgo Studio, does not work either, nRFgo is crashing if i try to connect to the debugger.

Also, I know that the MCU is still running because the LED 1-4 are flashing as expected.

Parents
  • 0

    I've now noticed you have pushed IF BOOT/RESET button. Note that if you press it long time then you put auxiliary MCU (Atmel generic MCU with SEGGER J-Link OB FW or mBed FW) to bootloader mode. If so then it will stop working as SWD to target nRF5x chip on the board... if it is not the case then I would use different machine, there are several Q&As on this forum where users claim how something doesn't work for days and then it works instantly on different system...

Reply
  • 0

    I've now noticed you have pushed IF BOOT/RESET button. Note that if you press it long time then you put auxiliary MCU (Atmel generic MCU with SEGGER J-Link OB FW or mBed FW) to bootloader mode. If so then it will stop working as SWD to target nRF5x chip on the board... if it is not the case then I would use different machine, there are several Q&As on this forum where users claim how something doesn't work for days and then it works instantly on different system...

Children
No Data
Related