how to program nRF52832 via uart

RE: how to program nRF52832 via uart

Jørgen Holmefjord — Mon, 25 Sep 2017 09:35:24 GMT

That page should provide all the information you need. You can also find the source code of pc-nrfjprog on our GitHub page.

RE: how to program nRF52832 via uart

bigezio — Fri, 22 Sep 2017 15:04:41 GMT

In order to port nrfutil from the PC environment to my host microcontroller CPU do I have to use the information provided in the following section of the infocenter?

infocenter.nordicsemi.com/index.jsp

Is there any other source of information within the infocenter that I need to consult?

thanks

RE: how to program nRF52832 via uart

Jørgen Holmefjord — Fri, 15 Sep 2017 10:39:07 GMT

Yes, you are correct.

RE: how to program nRF52832 via uart

bigezio — Fri, 15 Sep 2017 10:07:12 GMT

Dear Jorgen Holmefjord,

thanks for your answer.

So basically I need to

have a bootloader in my design (that makes my main application start or takes care for the upgrade)
emulate on the host cpu what can be done on a PC with the command

nrfutil dfu serial -pkg package.zip -p COM_PORT

Am I correct?

RE: how to program nRF52832 via uart

bigezio — Fri, 15 Sep 2017 09:55:29 GMT

dear Matt and dear AmbystomaLabs, thanks for your feedback. Ezio

RE: how to program nRF52832 via uart

Jørgen Holmefjord — Fri, 15 Sep 2017 09:02:08 GMT

As mentioned in the comments, you need a bootloader to update the firmware over UART. SDK 13 and above provide serial secure DFU bootloader example, in addition to BLE secure DFU bootloader (for OTA DFU).

RE: how to program nRF52832 via uart

AmbystomaLabs — Thu, 14 Sep 2017 16:46:24 GMT

I believe the DFU examples support UART in addition to OTA. An easy approach might be to put the nRF into dfu mode via the uart then do update over uart. DFU is pretty easy to code and work into a custom solution. Plus this way it can act as a loader if the application code gets messed up or maybe isn't loaded yet (eg, during production). Also with the multi bank solution there is safety in the transfer so you can't brick the device.

RE: how to program nRF52832 via uart

Matt — Thu, 14 Sep 2017 16:20:16 GMT

I believe you need to have a bootloader in the N52 chip and your host cpu running as the bootloader controller to send the image file through the uart. I once read the bootloader documentation in SDK11 (especially the serial bootloading portion) so you may want to check it out there. There is also some major bootloader changes since SDK12 so go through that one too if you have time to do so.