nRF52840 usb serial cable replacement

RE: nRF52840 usb serial cable replacement

Øyvind — Tue, 05 Mar 2019 09:28:07 GMT

Hello,

[quote user="Andrea Gonelli"]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)[/quote]

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)

[quote user="Andrea Gonelli"] L6050U: The code size of this image (37832 bytes) exceeds the maximum allowed for this version of the linker.[/quote]

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

RE: nRF52840 usb serial cable replacement

Andrea Gonelli — Tue, 05 Mar 2019 07:44:00 GMT

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

RE: nRF52840 usb serial cable replacement

awneil — Fri, 01 Mar 2019 11:19:01 GMT

There's a USB CDC example in the SDK

RE: nRF52840 usb serial cable replacement

Andrea Gonelli — Fri, 01 Mar 2019 11:02:53 GMT

awneil thank you for your answer

if could be ok Nordic Uart, what about USB side?

thanks again

Andrea

RE: nRF52840 usb serial cable replacement

awneil — Fri, 01 Mar 2019 10:47:07 GMT

The nRF5 parts are BLE only.

BLE does not have a defined spp or vsp profile.

Look at the (proprietary) Nordic UART Service (NUS):

https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-3-0/ble_sdk_app_nus_c

https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-3-0/ble_sdk_app_nus_eval