Flashing method for nrf52832

[Deepa Gopinath]

Hi,

As I understand I can able to flash nrf52832 using Segger Jlink or using ST Link Debug Interface. That means we use JTAG or SWD interface for flashing the application on nRF52832.

Can I use USB or UART interface for flashing the application on nRF52832 without using JTAG or SWD Interface?

Thanks in Advance!!

Regards,

Deepa

[Susheel Nuguru]

No, you cannot program the device using the conventional simple programming tools if you do not want to go through the DAP/CTRL-AP route.

You then need a special bootloader in your device to listen to which ever transport layer you want to get the firmware from. DFU in SDK has support for two transport layers. 

[Deepa Gopinath]

Hi Susheel,

Thank you for the inputs.

Can nrf52832 device comes with preflashed bootloader ?

What do you mean by " you cannot program the device using the conventional simple programming tools if you do not want to go through the DAP/CTRL-AP route"?

I'm looking for DFU Application Firmware Flash using UART Interface without using JTAG or SWD Interface?

Can you please guide me how can I do DFU Application Firmware Flash using UART Interface without using JTAG or SWD Interface

Thanks & Regards,

Deepa

[Susheel Nuguru]

Deepa Gopinath said:

I'm looking for DFU Application Firmware Flash using UART Interface without using JTAG or SWD Interface?

It wasn't very clear from your question that you were looking for DFU application. It looks to me that you want exact setup mentioned in this example.

[Deepa Gopinath]

Hi Susheel,

Thanks for your Inputs.

I want to flash an application on nrf52832 device without using JTAG or SWD interface (without using on board Jlink Interface).

In STM32, they provide UART interface to flash an application to the internal flash using DFU method. In DFU method, pre loaded bootloader image on STM32 chip will help us to flash the application image using DfuseDemo tool. 

As stated above, do we have similar or other option to flash an image in nrf52832 device?

Hope the question is clear to you now!! 

Thanks & Regards,

Deepa

[Susheel Nuguru]

Hi Deepa, 

Yes, I understand it. We do not have any tool that will simplify this process like DfuseDemo_tool. We still have a bootloader that can take the firmware through UART, but you need to go through all the procedure of packing your binary into a DFU zip package manually. 

After you build the package you can just send the firmware to the device using one command like below

nrfutil dfu serial -pkg package.zip -p COM_PORT for UART transport

[Deepa Gopinath]

Hi Susheel,

nrfutil dfu serial -pkg package.zip -p COM_PORT for UART transport

Using this command, Can I flash to nRf52832 device without JTAG /SWD Interface?

Can you please share the procedure of packing binary Image into a DFU zip package manually?

Thanks & Regards,

Deepa

[Susheel Nuguru]

Deepa Gopinath said:

nrfutil dfu serial -pkg package.zip -p COM_PORT for UART transport

 Yes, It will do it through the serial, Please check the documentation here for the procedure to make the package.zip.

[Deepa Gopinath]

Hi Susheel,

Thanks for the info!! I will check this and get back to you If I face any issues.

Is it possible to perform a DFU using UART with the latest Nordic SDK(nRF5_SDK_15.1.0_a8c0c4d ) ?

Regards,

Deepa

[Susheel Nuguru]

Deepa,

The latest one is SDK15.2 and yes you can do a DFU using serial(UART)

Please check this thread for more info.