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Updating Firmware
The PortaPack has its own firmware, which needs to be flashed into the HackRF One SPI flash.
You will need a few tools installed on your computer before you begin.
- dfu-util - Used to load and run the stock HackRF firmware from RAM.
- hackrf - All you need is the host tools, specifically, hackrf_spiflash.
You may download a pre-built firmware package, or build your own firmware.
If you downloaded the pre-built package, change directories to where you unzipped the package.
If you built your own firmware, the files you need are in the firmware/bootstrap subdirectory of your local portapack-hackrf repository.
You will need two files: hackrf_one_usb_ram.dfu, which is the stock HackRF firmware, which provides a means to program the SPI flash. The SPI flash will be programmed with the second file, called image.bin.
To install the firmware into the HackRF's SPI flash, run the DFU utility with the HackRF firmware built for RAM execution. Plug the HackRF into USB power while holding down the DFU button. Then run:
dfu-util --device 1fc9:000c --download hackrf_one_usb_ram.dfu --reset
Then, erase the flash and write the Cortex-M4 and -M0 code into the SPI flash at the proper locations:
hackrf_spiflash -w image.bin
Unplug your HackRF for a few seconds and plug it back in. You should now be running PortaPack code.
To replace the firmware on the HackRF's SPI flash with the stock HackRF firmware, plug the HackRF into USB power while holding down the DFU button. Then run:
dfu-util --device 1fc9:000c --download hackrf_one_usb_ram.dfu --reset
The HackRF firmware is now running from the microcontroller's RAM. Do not reset the HackRF at this point. Flash the HackRF firmware thusly:
hackrf_spiflash -w hackrf_one_usb_rom_to_ram.bin
Once this command completes, you may either unplug the HackRF or press the RESET button, and the HackRF firmware will run from the flash memory.
- Diagram of DFU button location