52832 DK to 52840 Dongle migration helphttps://devzone.nordicsemi.com/f/nordic-q-a/44388/52832-dk-to-52840-dongle-migration-helpI have some code that runs on the 52832 DK and I&#39;d like to migrate it to the 52840 dongle, but I&#39;m not sure what I need to do to accomplish that. I changed the memory locations a bit, changed some defines in the linker and everything compiled and seemsen-USTelligent Community 13Wed, 06 Mar 2019 08:18:37 GMTRE: 52832 DK to 52840 Dongle migration helphttps://devzone.nordicsemi.com/thread/174459?ContentTypeID=1Wed, 06 Mar 2019 08:18:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4f4b955f-eb04-4ccb-a430-3027395d9e5bAndreasF<p>Hi.</p> <p>The nRF52832 does not have an USB peripheral, it does have an USB port for the <strong>Segger Chip</strong>. The Segger Chip is enumerating the USB port as a CDC serial COM Port, it also uses the same port as a USB when you&#39;re flashing and debugging. To make it more clear, the USB port you see talks with the Segger Chip, the Segger chip then talks with the nRF52832 chip, the USB port and the nRF52832 chip <strong>never</strong> <strong>talks directly</strong> with each other.</p> <p>The nRF52840 Dongle does <strong>not</strong> have a Segger Chip. It uses the <a href="https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/lib_dfu_trigger_usb">DFU Trigger Library</a> to flash new applications onto the chip. The DFU Trigger library is included in the shipped firmware which is an Open bootloader. When the trigger library is added to an application, it allows a connected USB host to remotely tell the app to reboot into the bootloader to allow it to be updated via DFU. You can click on the RESET button to jump into the bootloader.</p> <p>Even though your Application compiled correctly it could still have some faults, and I think the reason that you cannot see the Dongle as a USB device is because you don&#39;t have the DFU Trigger Library.</p> <p>It should show up:</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-602a27c616d24031939d93be72571b39/pastedimage1551860033770v1.png" alt=" " /></p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>RE: 52832 DK to 52840 Dongle migration helphttps://devzone.nordicsemi.com/thread/174381?ContentTypeID=1Tue, 05 Mar 2019 19:31:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:df3a479e-c956-4512-8274-3641db5ea9datom8421<p>No, the board is stock. It&#39;s a PCA10040, which I understand is a 52832 Development Kit, and it definitely has a USB port.</p><div style="clear:both;"></div>RE: 52832 DK to 52840 Dongle migration helphttps://devzone.nordicsemi.com/thread/174369?ContentTypeID=1Tue, 05 Mar 2019 18:00:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a43f68bc-dd1b-4644-bb3d-93896d82faa7awneil<p>You said you&#39;re starting with an nRF<span>52832&nbsp;project.</span></p> <p><span>The&nbsp;nRF52832 doesn&#39;t have USB - so have you added that ... ?</span></p><div style="clear:both;"></div>RE: 52832 DK to 52840 Dongle migration helphttps://devzone.nordicsemi.com/thread/174339?ContentTypeID=1Tue, 05 Mar 2019 15:38:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:acf3bb96-595a-49e8-81ce-6d3d222b151ctom8421<p>I know how to flash the dongle, the problem is the dongle is not recognized as a USB device after I flash it.</p><div style="clear:both;"></div>RE: 52832 DK to 52840 Dongle migration helphttps://devzone.nordicsemi.com/thread/174211?ContentTypeID=1Tue, 05 Mar 2019 10:12:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:23ffccae-dd17-4c94-918e-aa565d743ce7AndreasF<p>Hi.</p> <p>We have a tutorial which shows you how to develop on the nRF52840 Dongle, I suggest that you take a look at that. You can find it <a href="https://devzone.nordicsemi.com/tutorials/b/getting-started/posts/nrf52840-dongle-programming-tutorial">here</a>.</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>