Hi.
My nRF51822-mKIT, when attached to the USB port, don't flashes the green LED nor the drive appear on Windows explorer.
It's possible that mbed loader was corrupted? If so, how do I reset the loader for mBed?
Thank
Hi.
My nRF51822-mKIT, when attached to the USB port, don't flashes the green LED nor the drive appear on Windows explorer.
It's possible that mbed loader was corrupted? If so, how do I reset the loader for mBed?
Thank
Hi,
Here is a beta version of a file that should fix your problem, an official release will be available next week.
This update will work on mkits that are blocked because of the activation of the on-chip memory protection. You can forward this on to the two users who are having issues with their boards.
To update the firmware: Unplug mkit from the usb. Press and hold down the reset button and connect the usb while doing so Mkit should now enumerate as an MSD named “BOOTLOADER” Copy the binary file attached to the BOOTLOADER drive. Wait until the drive dismounts and the mbed LED is flashing continuously Unplug the board and plug in again, and the board should enumerate as usual.
To erase an NRF chip on a bricked board (this will only work after the attached firmware update is done): Connect the mkit via usb and make sure it enumerates as an MBED drive. Press and hold down the reset button for ~5s The mbed LED will start flashing while the reset button is pressed, and after 5 seconds the LED will flash at a faster rate to indicate the NRF chip erase. Once the above step is complete the nrf chip should be fully erased and the board unblocked.
I removed the attachment as a newer version of the file is available from our mKIT product page.
Wow!
Now my mKit works fine.
Thank you!!!
I had the same issue the third or fourth time I flashed a brand new mKit on OS X. This solution worked for me. Thanks.
I tried to use PCA10028 as master emulator. Followed the firmware change guide. Then when I connected the board, it wasn't connecting anymore. Got freaked out. After following Runar's answer the board is working again. Thumbs up!