PCA10028 programming interface not see from windows explorer

[Gabor Veress]

Hello everybody,

I used to my PCA10028 DK board with nRF51-DK-mbed-IF but I wanted to revert for nRF51-DK-J-Link-IF. According to the nRF51-DK - User Guide v1_0 documentation "4.1 IF Boot/Reset button" as describe I connected to my board for my PC, but the flash storage not see from windows explorer, neither Total Commander. The device manager of Windows just showed "Bossa program port". I examined to board and I experienced that the 12MHz quartz of SAM3U2CA interface MCU just given 25Hz. Therefore, I replaced for new crystal, but same the situation.

If I going to change new SAM3U2CA then will it solve my problem? How can I improve failure?

[wlgrd]

The first time you changed it from j-link to mbed, how did it go? You should NOT change the crystal if it worked to already change it to mbed. I've never heard of Bossa Program Port, but I think it has something to do with Atmel's failsafe on the segger chip on the DK. It seems that Windows has installed the wrong driver for you. Try uninstalling the driver, disable "install from windows update" and try to install it again by powering your board.

If that doesn't work, find the hardware ID of your device (Bossa Program Port) in the device manager, go to C:\Windows\inf and search for this ID within the .inf-files. Most probably the problem is that you have two drivers, contining the same USB hardware ID, and Windows just happens to take the first it finds. Rename the file not containing any Nordic Semiconductor specific descriptions and try re-installing the driver.