Attention Windows Users: Windows users may have to install the

Photon's USB driver for DFU mode. Download Zadig and follow along

with this tutorial.

To verify that the Photon is in DFU mode and dfu-util is installed properly,

Found DFU: [2b04:d006] devnum=0, cfg=1, intf=0, alt=0, name="@Internal Flash /0x08000000/03*016Ka,01*016Kg,01*064Kg,0

Found DFU: [2b04:d006] devnum=0, cfg=1, intf=0, alt=1, name="@DCT Flash /0x00000000/01*016Kg"

The important parts there are the hex values inside the braces – the USB

Two commands are required to build and flash the firmware: switch to the

modules directory then call make with a few parameters to build and

upload the firmware:

make PLATFORM=photon clean all program­dfu

Then sit tight as make and then dfu-util work their magic. Be warned this

may take a long while.

Navigating the Photon Firmware

The Photon’s firmware code base is massive, but it’s well sorted. Unless

you want to mess with really low-level stuff, you can ignore most

directories. The user directory is where the Photon’s application code is

stored.

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