I merged the firmware trees for Anelok 2013, Anelok 2014, and Y-Box, got USB device to work on Anelok 2014, and added full DFU support (boot loader and reset-to-DFU in the application) for Anelok 2014. The merge is messy and needs some more thinking and cleanup, but it'll do for now.
USB didn't yield easily and I tought the FLL jitter may be just too big for it to work, but in the end it seems to be fine. Still need to have a closer look at that jitter, though - it does look pretty wild: http://downloads.qi-hardware.com/people/werner/anelok/tmp/jitter-fll-xtal.png This shows the 24 MHz bus block 2 us (i.e., 24 Full-Speed USB bit times) after the trigger. I also found another mystery: when DFU'ing, the received data is passed with size 0. But the full 64 bytes are there. Strange. I wonder if that's my punishment for having started to use --gc-sections ... With DFU, updating the firmware is very easy. I put this to good use and added capacitive sensing. This is a first result, without any tuning (using the parameters from the experiments on Y-Box) and with idle plates floating: http://downloads.qi-hardware.com/people/werner/anelok/tmp/cap-20140809.png The red and green curves show the two channels, the blue curve their difference. The five patterns are, from left to right: - gently pressing the sensor (covered with 1 mm of plastic) in the middle, - pressing it on the left side, - pressing it on the right side, - sliding the finger from left to right, - and back from right to left. This look reasonably good for a first try. Handling positions near the ends of the sensor area may get a bit tricky, but we'll see. I also need to make the plastic cover fit a bit better - right now one end sits on the vias and thus has a little air gap. - Werner _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
