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This is an old revision of the document!
The Radio dongle can be programmed either via USB bootloader or via SPI. The USB bootloader does not require any hardware but is not currently (as of 2012-09) full-proff (if the flash procedure does not complete well the dongle will have to be reprogrammed via spi). It is adviced to program only released firmware via USB.
In Linux it might be required to launch the commands accessing the USB port as root (ie. with sudo
)
First Crazyradio has to be reboted in USB bootloader mode. To do so insert the dongle in the pc, open a terminal window and run the bootloader launcher:
> cd pc_util/crazyradio/ > python launchBootloader.py Launching bootloader .. Bootloader launched. >
After running this tool the Crazyradio dongle should have disapeared and a new device named nRF24LU1P-F32 BOOT LDR
should appear.
To flash the firmware use the nrfbootload.py script:
> python nrfbootload.py flash /path/to/cradio.bin