nRF52840 usb serial cable replacement

[Andrea Gonelli]

Hello,

I would like to use an usb dongle with nRF52840 above and

- on bluetooth side give an spp or vsp profile

- on usb side be an usb cdc device

the reason is: I alreade have an usb port. No os working but I can manage an usb cdc serial

if could be possible, please give me some suggestions in which way I can start

thank you for you help

Andrea Gonelli

[Andrea Gonelli]

Hello,

just started with nRF52840-DK

it works, find in which way I can change software: copying a new hex on drive created by starter kit

can I use JLink for program it instead (I installed last uv4 release but seems not recognize it, I can find it on pc device manager)

I found an interesting sample code but uv4 says

.\_build\nrf52840_xxaa.axf: error: L6050U: The code size of this image (37832 bytes) exceeds the maximum allowed for this version of the linker.

is it solvable?

thank you

Andrea Gonelli

[Øyvind]

Hello,

Andrea Gonelli said:

can I use JLink for program it instead (I installed last uv4 release but seems not recognize it, I can find it on pc device manager)

Please have a look at the "Getting Started Tutorial" for the nRF52 here. And the user guide for the nRF52840-DK here. Please try to install the latest version of µVision, i.e. version 5 (found here)

Andrea Gonelli said:

L6050U: The code size of this image (37832 bytes) exceeds the maximum allowed for this version of the linker.

 This error message means that you have reached the size limitation of the free Keil license. See this page for more information.

Best regards,
Oeyvind