How to enter 52832 bootloader mode only by PIN signal control?

RE: How to enter 52832 bootloader mode only by PIN signal control?

user26071 — Tue, 07 Jun 2022 08:23:57 GMT

Please see this thread:

https://devzone.nordicsemi.com/f/nordic-q-a/36871/pin-interface-and-factory-programming-nrf52840-over-uart-connected-with-processor

[quote user="tni"]We also have a plan to add 10pin debug port if needed[/quote]

Since the nRF52 is completely empty when coming from the factory, there is no pin sequence to put it in bootloader mode, because there is no bootloader pre-programmet. The only way to program the bootloader is to program it using a programmer. Depending on the scale/amount of chips you are going to program, you may want to look into a factory programmer, or using a 10pin debug port connected to the SWDIO and SWDCLK pins.

If you are interrested, I can give you the contact information to our Regional Sales Manager (RSM) in your area. If so, please send me a direct message (here on DevZone) where you link to this ticket, and specify where you are located. Our RSM may know more about factory programming than I do, as they are typically more involved in the production phase.

Best regards,

Edvin

RE: How to enter 52832 bootloader mode only by PIN signal control?

user116539 — Fri, 03 Jun 2022 18:04:15 GMT

Hi Edwin,

I have nRF5 SDK, nRF Connect SDK, nrfutil, NRF52DK with 52832. I setup development environment and all connection is working.

The issue is manufacturing. Our SoC is connected with 52832 with UART and other GPIO PINS. We need to flash bootloader, Softdevice and application image to 52832 on manufacturing.

If you know GPIO sequence which make 52832 bootloader mode, please describe the sequence. 52832 is factory reseted condition. We cannot power cycle of 52832 during the sequence.

We also have a plan to add 10pin debug port if needed.

Best Regard,

tni

RE: How to enter 52832 bootloader mode only by PIN signal control?

user26071 — Fri, 03 Jun 2022 10:42:35 GMT

Hello,

I am not completely sure when you say "I need to make 52832 enter bootloader mode". Did you program a bootloader already? Because the nRF52832 doesn't come preprogrammed with a bootloader. Are you using an nRF52832 DK from Nordic, a 3rd party device, or custom HW?

[quote user=""]Manual steps entering bootloader is pressing RESET button and power-on.[/quote]

This is the interface chip on the DK. Putting this in bootloader mode will allow you to update the on-board programmer, not the nRF52832.

There are ways of updating the application running on the nRF52832 without pressing any buttons (you don't really need to power cycle it either) just by using GPIOs, but based on the way that you asked these questions, I suspect that you have misunderstood something.

If you want to program the nRF52832 from the via a bootloader, you first need to compile the bootloader from the SDK that you are using. Are you using the nRF5 SDK or the nRF Connect SDK?

Best regards,

Edvin