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Blinkenlights, Demonstrate the use of the uSD slot for DIY hardware http://projects.qi-hardware.com/index.php/p/ben-blinkenlights/
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Werner Almesberger 080978ade0 ubb-vga2: added support for showing a PPM image
- Makefile (OBJS): added ppm.o and ppmimg.o
- ppm.h (load_ppm), ppm.c: PPM file loader, adapted from
  eda-tools/schhist/ppmdiff/ppmdiff.c
- ubb-vga.h (img_name, ppmimg), ppmimg.c: PPM image to frame buffer
  converter
- ubb-vga2.c (usage, main): the threshold is now set with the option -l
- ubb-vga2.c (usage, main): if a second argument is given, treat it as
  a PPM file
- ubb-vga2.c (usage): also documented option -t
2011-04-28 00:38:13 -03:00
avrdude avrdude/: fixed confusing typo in avrdude.conf, added tuxbrain's nanonote_ICSP 2011-03-09 17:28:24 -03:00
bbl bbl.c (main): open /dev/mem with O_SYNC to disable caching 2011-01-03 18:31:38 -03:00
cam Initial commit. 2010-09-01 04:02:24 -03:00
components uart: the AVR requires nSS for slave mode 2011-01-31 21:35:45 -03:00
ext ext/: added uSD extender board (draft) 2010-11-02 12:17:20 -03:00
nxuart nxuart/fw/Makefile (prog): supply an 8 MHz clock while programming 2011-03-07 17:21:54 -03:00
ubb usb/cam/Makefile: added dependency in Makefile itself; local parameter update 2011-03-07 13:43:36 -03:00
ubb-vga ubb-vga2: added support for showing a PPM image 2011-04-28 00:38:13 -03:00
bbl.brd bbl.brd: updated 8:10-CARD to update pad type 2011-01-18 16:08:00 -03:00
bbl.cmp use 8_10-card.fpd instead of usd-card.fpd 2011-01-17 12:42:49 -03:00
bbl.pro use 8_10-card.fpd instead of usd-card.fpd 2011-01-17 12:42:49 -03:00
bbl.sch use 8_10-card.fpd instead of usd-card.fpd 2011-01-17 12:42:49 -03:00
BOOKSHELF Added simple UART 8:10 card. 2011-01-31 19:02:50 -03:00
Makefile Added simple UART 8:10 card. 2011-01-31 19:02:50 -03:00
README README: changed "uSD" to "8:10 card" 2011-01-17 12:45:42 -03:00

Ben Blinkenlights
=================

This project is a proof of concept implementation of Rikard Lindstrom's
idea of using the Ben's 8:10 card slot as a general extension interface
also for devices that don't speak MMC or SD/SDIO. The application is a
simple LED circuit, as suggested by David Samblas.

The 8:10 card slot gives access to six GPIOs, a 3.3 V supply that can
be switched on and off by software, and ground. We use a simple form of
multiplexing to drive ten LEDs with this interface.

Note that one should only light one LED at a time. If multiple LEDs are
lit, they will share the current though the common resistor, and will
thus be less bright than a single LED.