No access to bootloader

makerdiary / nrf52840-mdk-usb-dongle

An open-source, small and low-cost USB Dongle that supports Bluetooth 5.4, Bluetooth mesh, Thread, Zigbee, 802.15.4, ANT and 2.4 GHz proprietary protocols

https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle/

Apache License 2.0

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No access to bootloader #8

Closed TorstenRobitzki closed 4 years ago

TorstenRobitzki commented 4 years ago

Hi, I have some (3) new nRF52840 MDK USB Dongle, with cases. When I connect them to my PC (OS/X 10.14.6) and start nRF Connect, I can select the connected device and get some device informations but I will not get the chance to flash them (looks like the nRF Connect is still busy to interrogate the connected device:

If I connect a PCA10059, nRF Connect can get all required informations from the device:

I'm using nRF Connect version 3.0.0. I have tried two of the 3 USB Dongles, both have this issue.

caizelin commented 4 years ago

@TorstenRobitzki Hi, To program the Dongle, it must be in bootloader mode. While holding the dongle's RESET/USR button, connect it to your computer. When the Dongle has entered the bootloader mode, the RGB LED pulses RED. The Dongle is now ready for programming.

You can also check out the programming tutorial here: https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle/programming/

TorstenRobitzki commented 4 years ago

Thanks, works like a charm!