MobileRead Forums - View Single Post - Hardware Waveform file decoding: how much do we know?

mark03 · 12-02-2018, 02:20 PM

Since posting this I have discovered a .wbf file dump utility:

https://github.com/julbouln/ice40_ei...utils/wbf_dump

This guy implemented a basic EPD controller in an FPGA and was apparently able to extract waveforms from the file. I tried it on one of my wbf files and it prints a bunch of waveforms then segfaults, so obviously a work in progress. I haven't had time to dig much deeper though.

One question I have is what makes the "regal" technology different from the older "direct update" (non-flashing) waveforms? Is regal merely a more-refined version, calibrated at different temperatures, etc.? Or is there some qualitative difference between the two, like storing the history of a pixel and using that to dynamically alter the waveform?

12-02-2018, 02:20 PM	#3
mark03 Enthusiast Posts: 30 Karma: 10 Join Date: Jun 2011 Device: Kindle 3 wifi	Since posting this I have discovered a .wbf file dump utility: https://github.com/julbouln/ice40_ei...utils/wbf_dump This guy implemented a basic EPD controller in an FPGA and was apparently able to extract waveforms from the file. I tried it on one of my wbf files and it prints a bunch of waveforms then segfaults, so obviously a work in progress. I haven't had time to dig much deeper though. One question I have is what makes the "regal" technology different from the older "direct update" (non-flashing) waveforms? Is regal merely a more-refined version, calibrated at different temperatures, etc.? Or is there some qualitative difference between the two, like storing the history of a pixel and using that to dynamically alter the waveform?