Root/
| 1 | Ben Blinkenlights |
| 2 | ================= |
| 3 | |
| 4 | This is an umbrella project for various items related to using the 8:10 |
| 5 | card slot of the Ben Nanonote. The "flagship" sub-project is no longer |
| 6 | the top-level LED board but the Universal Breakout Board, in ubb/ |
| 7 | |
| 8 | . The original blinkenlights, a board with a line of LEDs |
| 9 | cam/ Outline of the board; obsolete |
| 10 | ext/ UBB variant with ground between signals; obsolete |
| 11 | ioscript/ GPIO test pattern generator; experimental |
| 12 | libubb/ Helper functions for accessing UBB |
| 13 | lpc111x-isp/ In-system programmer for NXP LPC111x MCUs |
| 14 | nxuart/ Card with ATmega48 in UART configuration; incomplete |
| 15 | swuart-chat/ Software-implemented UART (on UBB) |
| 16 | ubb-jtag/ JTAG via UBB (example for Milkymist One) |
| 17 | ubb-usb/ Design for hypothetical UBB-based USB host |
| 18 | ubb-vga/ VGA output using UBB and minimal circuitry |
| 19 | ubbctl/ Set and query UBB signals from the command line |
| 20 | ubb/ The Universal Breakout Board (UBB) |
| 21 | |
| 22 | |
| 23 | Blinkenlights |
| 24 | ------------- |
| 25 | |
| 26 | This project is a proof of concept implementation of Rikard Lindstrom's |
| 27 | idea of using the Ben's 8:10 card slot as a general extension interface |
| 28 | also for devices that don't speak MMC or SD/SDIO. The application is a |
| 29 | simple LED circuit, as suggested by David Samblas. |
| 30 | |
| 31 | The 8:10 card slot gives access to six GPIOs, a 3.3 V supply that can |
| 32 | be switched on and off by software, and ground. We use a simple form of |
| 33 | multiplexing to drive ten LEDs with this interface. |
| 34 | |
| 35 | Note that one should only light one LED at a time. If multiple LEDs are |
| 36 | lit, they will share the current though the common resistor, and will |
| 37 | thus be less bright than a single LED. |
| 38 |
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