Debug ATSAM3U2C from nRF51822 mKit in Windowshttps://devzone.nordicsemi.com/f/nordic-q-a/3399/debug-atsam3u2c-from-nrf51822-mkit-in-windowsHello everyone! Firs of all consider I&#39;m very new in micro controllers programming/debugging, so your patience would be much appreciated. I have a nRF51822 mKit like the one below and what I really need is to debug the firmware from the Atmel ATSAM3U2Cen-USTelligent Community 13Thu, 07 Aug 2014 14:53:51 GMTRE: Debug ATSAM3U2C from nRF51822 mKit in Windowshttps://devzone.nordicsemi.com/thread/12336?ContentTypeID=1Thu, 07 Aug 2014 14:53:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0f0d72f6-6588-4bc5-ac7e-12c6152efde8H&#229;kon Alseth<p>The MBed-compiler does not use the CMSIS interface directly to program. It uses the Mass-storage device class. I&#39;ve seen that if windows automatically downloads the mbed drivers, it does not seem to enumerate the CMSIS DAP debugger properly, only the MBED MSD drive.</p> <p>Try downloading the drivers from mbed and plug the kit into a new usb-port to see if the &quot;CMSIS-DAP&quot; is enumerated in Devices and Printers:</p> <p><a href="https://mbed.org/handbook/Windows-serial-configuration">mbed.org/.../Windows-serial-configuration</a></p> <p>Cheers, Håkon</p><div style="clear:both;"></div>