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- /*
- Copyright 2012 Jun WAKO <wakojun@gmail.com>
-
- This software is licensed with a Modified BSD License.
- All of this is supposed to be Free Software, Open Source, DFSG-free,
- GPL-compatible, and OK to use in both free and proprietary applications.
- Additions and corrections to this file are welcome.
-
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are met:
-
- * Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-
- * 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.
-
- * Neither the name of the copyright holders nor the names of
- 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 OWNER 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.
- */
-
- #include <stdbool.h>
- #include <avr/io.h>
- #include <avr/interrupt.h>
- #include "news.h"
-
- void news_init(void) { NEWS_KBD_RX_INIT(); }
-
- // RX ring buffer
- #define RBUF_SIZE 8
- static uint8_t rbuf[RBUF_SIZE];
- static uint8_t rbuf_head = 0;
- static uint8_t rbuf_tail = 0;
-
- uint8_t news_recv(void) {
- uint8_t data = 0;
- if (rbuf_head == rbuf_tail) {
- return 0;
- }
-
- data = rbuf[rbuf_tail];
- rbuf_tail = (rbuf_tail + 1) % RBUF_SIZE;
- return data;
- }
-
- // USART RX complete interrupt
- ISR(NEWS_KBD_RX_VECT) {
- uint8_t next = (rbuf_head + 1) % RBUF_SIZE;
- if (next != rbuf_tail) {
- rbuf[rbuf_head] = NEWS_KBD_RX_DATA;
- rbuf_head = next;
- }
- }
-
- /*
- SONY NEWS Keyboard Protocol
- ===========================
-
- Resources
- ---------
- Mouse protocol of NWA-5461(Japanese)
- http://groups.google.com/group/fj.sys.news/browse_thread/thread/a01b3e3ac6ae5b2d
-
- SONY NEWS Info(Japanese)
- http://katsu.watanabe.name/doc/sonynews/
-
-
- Pinouts
- -------
- EIA 232 male connector from NWP-5461
- -------------
- \ 1 2 3 4 5 /
- \ 6 7 8 9 /
- ---------
- 1 VCC
- 2 BZ(Speaker)
- 3 Keyboard Data(from keyboard MCU TxD)
- 4 NC
- 5 GND
- 6 Unknown Input(to keyboard MCU RxD via schmitt trigger)
- 7 Mouse Data(from Mouse Ext connector)
- 8 Unknown Input(to Keyboard MCU Input via diode and buffer)
- 9 FG
- NOTE: Two LED on keyboard are controlled by pin 6,8?
-
- EIA 232 male connector from NWP-411A
- -------------
- \ 1 2 3 4 5 /
- \ 6 7 8 9 /
- ---------
- 1 VCC
- 2 BZ(Speaker)
- 3 Keyboard Data(from keyboard MCU TxD)
- 4 NC
- 5 GND
- 6 NC
- 7 Mouse Data(from Mouse Ext connector)
- 8 NC
- 9 FG
- NOTE: These are just from my guess and not confirmed.
-
-
- Signaling
- ---------
- ~~~~~~~~~~ ____XOO0X111X222X333X444X555X666X777~~~~ ~~~~~~~
- Idle Start LSB MSB Stop Idle
-
- Idle: High
- Start bit: Low
- Stop bit: High
- Bit order: LSB first
-
- Baud rate: 9600
- Interface: TTL level(5V) UART
-
- NOTE: This is observed on NWP-5461 with its DIP switch all OFF.
-
-
- Format
- ------
- MSB LSB
- 7 6 5 4 3 2 1 0 bit
- | | | | | | | |
- | +-+-+-+-+-+-+-- scan code(00-7F)
- +---------------- break flag: sets when released
-
-
- Scan Codes
- ----------
- SONY NEWS NWP-5461
- ,---. ,------------------------, ,------------------------. ,---------.
- | 7A| | 01 | 02 | 03 | 04 | 05 | | 06 | 07 | 08 | 09 | 0A | | 68 | 69 | ,-----------.
- `---' `------------------------' `------------------------' `---------' | 64| 65| 52|
- ,-------------------------------------------------------------. ,---. ,---------------|
- | 0B| 0C| 0D| 0E| 0F| 10| 11| 12| 13| 14| 15| 16| 17| 18| 19 | | 6A| | 4B| 4C| 4D| 4E|
- |-------------------------------------------------------------| |---| |---------------|
- | 1A | 1B| 1C| 1D| 1E| 1F| 20| 21| 22| 23| 24| 25| 26| 27| | | 6B| | 4F| 50| 51| 56|
- |---------------------------------------------------------' | |---| |---------------|
- | 28 | 29| 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 34| 35 | | 6C| | 53| 54| 55| |
- |-------------------------------------------------------------| |---| |-----------| 5A|
- | 36 | 37| 38| 39| 3A| 3B| 3C| 3D| 3E| 3F| 40| 41| 42 | | 6D| | 57| 59| 58| |
- |-------------------------------------------------------------| |---| |---------------|
- | 43 | 44 | 45 | 46 | 47 | 48| 49| 4A | | 6E| | 66| 5B| 5C| 5D|
- `-------------------------------------------------------------' `---' `---------------'
- */
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