nRF52832 Firmware

RE: nRF52832 Firmware

awneil — Thu, 16 Aug 2018 14:10:30 GMT

You mean this: https://www.zephyrproject.org/ ?

Of course you can always erase the entire chip - then it will be back as it came from the factory.

RE: nRF52832 Firmware

Seyma Tutuncu — Thu, 16 Aug 2018 13:55:51 GMT

Thank you so much.

I want to try Zephyr project on nrf52832 device. After I try zephyr, I can turn to initial state of device with loading soft device only. Is it OK?

RE: nRF52832 Firmware

awneil — Thu, 16 Aug 2018 13:50:16 GMT

As I said, you will not get source code by reading the chip!

The radio stack - the "SoftDevice" - is not open source; it is proprietary to Nordic.

The application code may or may not be open source - you would have to contact the author/owner for details.

As Einar Thorsrud said, chips from the factory ship with no firmware in them.

RE: nRF52832 Firmware

Seyma Tutuncu — Thu, 16 Aug 2018 13:29:34 GMT

[quote userid="6462" url="~/f/nordic-q-a/37545/nrf52832-firmware/144543"]Why do you want to do that?[/quote]

I need the source code of firmware to review, is it open source?

I want to try a RTOS in the device and reload the firmware if RTOS fails.

RE: nRF52832 Firmware

awneil — Thu, 16 Aug 2018 13:22:43 GMT

Thanks - I thought it must have!

I was looking at an old datasheet which didn't mention that.

Seyma Tutuncu - if the chip you have is "locked", you cannot read anything from it at all.

RE: nRF52832 Firmware

Einar Thorsrud — Thu, 16 Aug 2018 13:09:42 GMT

Yes, it has an optional Access port protection (often called "read-back protection") mechanism. If enabled, the only way to disable it is to do a full chip erase, so that an attacker won't access any data from the flash.

RE: nRF52832 Firmware

awneil — Thu, 16 Aug 2018 13:02:11 GMT

[quote userid="69790" url="~/f/nordic-q-a/37545/nrf52832-firmware"]I want to see the firmware of nRF52832[/quote]

Why do you want to do that?

What you will get from reading the chip will be just raw binary - you will not get any source code!

RE: nRF52832 Firmware

awneil — Thu, 16 Aug 2018 13:00:21 GMT

[quote userid="7377" url="~/f/nordic-q-a/37545/nrf52832-firmware/144538"]You can read out the flash using a debugger[/quote]

Can the nRF52832 be "locked" to prevent reading? I couldn't see it mentioned in the datasheet.

RE: nRF52832 Firmware

Einar Thorsrud — Thu, 16 Aug 2018 12:51:24 GMT

Hi,

The nRF52832 ships with an empty flash, so there is no firmware on it from the factory. You can read out the flash using a debugger, such as a SEGGER J-Link variant. Assuming you have a SEGGER debugger (stand alone or using a nRF52 DK), you can use "nrfjprog --readcode".

(If you want to develop for the nRF52832, then you should look at the nRF5 SDK).