2 Copyright 2012 Jun WAKO <wakojun@gmail.com>
4 This software is licensed with a Modified BSD License.
5 All of this is supposed to be Free Software, Open Source, DFSG-free,
6 GPL-compatible, and OK to use in both free and proprietary applications.
7 Additions and corrections to this file are welcome.
10 Redistribution and use in source and binary forms, with or without
11 modification, are permitted provided that the following conditions are met:
13 * Redistributions of source code must retain the above copyright
14 notice, this list of conditions and the following disclaimer.
16 * Redistributions in binary form must reproduce the above copyright
17 notice, this list of conditions and the following disclaimer in
18 the documentation and/or other materials provided with the
21 * Neither the name of the copyright holders nor the names of
22 contributors may be used to endorse or promote products derived
23 from this software without specific prior written permission.
25 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
26 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
29 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 POSSIBILITY OF SUCH DAMAGE.
40 #include <avr/interrupt.h>
51 static uint8_t rbuf[RBUF_SIZE];
52 static uint8_t rbuf_head = 0;
53 static uint8_t rbuf_tail = 0;
55 uint8_t news_recv(void)
58 if (rbuf_head == rbuf_tail) {
62 data = rbuf[rbuf_tail];
63 rbuf_tail = (rbuf_tail + 1) % RBUF_SIZE;
67 // USART RX complete interrupt
70 uint8_t next = (rbuf_head + 1) % RBUF_SIZE;
71 if (next != rbuf_tail) {
72 rbuf[rbuf_head] = NEWS_KBD_RX_DATA;
79 SONY NEWS Keyboard Protocol
80 ===========================
84 Mouse protocol of NWA-5461(Japanese)
85 http://groups.google.com/group/fj.sys.news/browse_thread/thread/a01b3e3ac6ae5b2d
87 SONY NEWS Info(Japanese)
88 http://katsu.watanabe.name/doc/sonynews/
93 EIA 232 male connector from NWP-5461
100 3 Keyboard Data(from keyboard MCU TxD)
103 6 Unknown Input(to keyboard MCU RxD via schmitt trigger)
104 7 Mouse Data(from Mouse Ext connector)
105 8 Unknown Input(to Keyboard MCU Input via diode and buffer)
107 NOTE: Two LED on keyboard are controlled by pin 6,8?
109 EIA 232 male connector from NWP-411A
116 3 Keyboard Data(from keyboard MCU TxD)
120 7 Mouse Data(from Mouse Ext connector)
123 NOTE: These are just from my guess and not confirmed.
128 ~~~~~~~~~~ ____XOO0X111X222X333X444X555X666X777~~~~ ~~~~~~~
129 Idle Start LSB MSB Stop Idle
137 Interface: TTL level(5V) UART
139 NOTE: This is observed on NWP-5461 with its DIP switch all OFF.
147 | +-+-+-+-+-+-+-- scan code(00-7F)
148 +---------------- break flag: sets when released
154 ,---. ,------------------------, ,------------------------. ,---------.
155 | 7A| | 01 | 02 | 03 | 04 | 05 | | 06 | 07 | 08 | 09 | 0A | | 68 | 69 | ,-----------.
156 `---' `------------------------' `------------------------' `---------' | 64| 65| 52|
157 ,-------------------------------------------------------------. ,---. ,---------------|
158 | 0B| 0C| 0D| 0E| 0F| 10| 11| 12| 13| 14| 15| 16| 17| 18| 19 | | 6A| | 4B| 4C| 4D| 4E|
159 |-------------------------------------------------------------| |---| |---------------|
160 | 1A | 1B| 1C| 1D| 1E| 1F| 20| 21| 22| 23| 24| 25| 26| 27| | | 6B| | 4F| 50| 51| 56|
161 |---------------------------------------------------------' | |---| |---------------|
162 | 28 | 29| 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 34| 35 | | 6C| | 53| 54| 55| |
163 |-------------------------------------------------------------| |---| |-----------| 5A|
164 | 36 | 37| 38| 39| 3A| 3B| 3C| 3D| 3E| 3F| 40| 41| 42 | | 6D| | 57| 59| 58| |
165 |-------------------------------------------------------------| |---| |---------------|
166 | 43 | 44 | 45 | 46 | 47 | 48| 49| 4A | | 6E| | 66| 5B| 5C| 5D|
167 `-------------------------------------------------------------' `---' `---------------'