How to flash custom firmware to device?

Development šŸ‡¬šŸ‡§ Ruuvi Firmware Development
1

Hi guys,

since about two years Iā€™m a user of some of those wonderful Ruuvi Tags. Brilliant things!

Now I have some ideas to modify the firmware for my specific application.

I had a look around and found the series of blogposts that describes certain features of the firmware and how to modify it: https://ruuvi.com/ruuvi-firmware-part-1-sleep/

Unfortunately the blogposts do not very well cover the actual process of flashing the new firmware to the device and what kind of hardware is required.

So far I understood that either I need a Ruuvi Dev Shield or that I can somehow connect a cable directly to the Ruuvi Tag.

Is there any blogpost or howto that describes the actual process of flashing a custom firmware to the Ruuvi Tag and what is needed hardware wise?

Thank you
Henry

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2

Hello,

Our RuuviLab article has the hardware connection information: RuuviLab | DevShield User Manual
You can also use Tag-Connect cables for the SWD connection for wired programming and debugging, but in practice having the target board zip-tied in place is very helpful.

On firmware side, we have a article about the general principles how creating a binary and DFU package, although it is a few years old so some details such as soft device version is out of date.

More recent blog post covers bootloader creation https://ruuvi.com/ruuvi-firmware-part-12-bootloader/

Readme also has details on how the makefile of the project creates the binaries and how to flash them.

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