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Diffstat (limited to 'avr/main.c')
| -rw-r--r-- | avr/main.c | 103 |
1 files changed, 37 insertions, 66 deletions
@@ -1,73 +1,44 @@ /* - Project: DS1992 memory iButton dumper - Author: Florian Jung (flo@windfisch.org) - Copyright: (c) 2015 by Florian Jung - License: GNU GPL v3 (see LICENSE) - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License version 3 as - published by the Free Software Foundation. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. - - This project is based on the code for the AVR ATtiny USB Tutorial at - http://codeandlife.com/ by Joonas Pihlajamaa, joonas.pihlajamaa@iki.fi, - which is in turn based on the V-USB example code by Christian Starkjohann - (Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH) -*/ +Project: DS1992 memory iButton dumper +Author: Florian Jung (flo@windfisch.org) +Copyright (c) 2015,2016, Florian Jung. All rights reserved. + +License: 3-Clause-BSD as follows: + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +1. Redistributions of source code must retain the above copyright notice, this +list of conditions and the following disclaimer. +2. Redistributions in binary form must reproduce the above copyright notice, +this list of conditions and the following disclaimer in the documentation +and/or other materials provided with the distribution. -/* this project is designed for the USB AVR LAB board by ullihome - * (http://www.ullihome.de/wiki/USBAVRLab/index) - * That's a small Atmega8-powered board with software-USB and a small pinout - * that looks like this: - * ____ ____ ____ ____ - * | . . . . . | | o . . . . | - * | . . . . . | or | x . . . . | - * |___________| |___________| - * - * hold the DS1992 token against the pins, so that the outer ring touches the - * "x" pin, while the inner circle touches the "o" pin. - * - * How to use: - * the dumping device has three modes of operation, which are shown by the blinking - * speed of the blue LED. - * 1. reading mode: normal blinking - * 2. reading mode: slooow blinking (previous operation failed) - * 3. writing mode: fast blinking - * - * in either mode, the red LED flashes periodically. This means that the device - * probed for a DS1992, but couldn't find anything on the bus. If you hold you - * DS1992 against the pins, the flashing will turn green instead. This means that - * the token has been read into the device's RAM. - * You can now use `pc/a.out read` to read the contents. - * (If both green and red leds flash, this means you've a short circuit.) - * - * If you execute `pc/a.out write <page> <data>`, then the device will enter - * writing mode. The flashing red LED has the same meaning as before. If you now - * connect the token, the page <page> (1-indexed) will be written to with <data>, - * whenever the LED flashes green the next time. - * After that, the device enters reading mode again. If the LED blinks really slow, - * then there was a write error. re-execute a.out write, reconnect the token and retry. - * Additionally, after writing you can use `a.out read` again (without connecting the - * token for reading previously). This will output you a lot of garbage, but the first - * byte read tells you a more detailed error code: - * 0x01: "reset/presence pulse" failed after scratchpad write - * 0x02: scratchpad did not verify correctly - * 0x03: "reset/presence pulse" failed after scratchpad readback + verify - * 0xFF: probably successful - * - * Note that you should read back the data after writing, just to be sure. - * Also note that while you can read the whole memory at once, you must execute the write - * command, and also connect the token, four times for a full write (once for each page). - */ +3. Neither the name of the copyright holder nor the names of its contributors +may be used to endorse or promote products derived from this software without +specific prior written permission. +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + +This project is based on the code for the AVR ATtiny USB Tutorial at +http://codeandlife.com/ by Joonas Pihlajamaa, joonas.pihlajamaa@iki.fi, +which is in turn based on the V-USB example code by Christian Starkjohann +(Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH) + +Note that, while this file is BSD-licensed, different licensing applies for +V-USB, and thus for the resulting binaries. +*/ #include <avr/io.h> |