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Diffstat (limited to 'protocol/news.c')
| -rw-r--r-- | protocol/news.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/protocol/news.c b/protocol/news.c new file mode 100644 index 000000000..d18b996f4 --- /dev/null +++ b/protocol/news.c @@ -0,0 +1,168 @@ +/* +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 FG + 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 GND + 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 FG + 6 NC + 7 Mouse Data(from Mouse Ext connector) + 8 NC + 9 GND + 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| + `-------------------------------------------------------------' `---' `---------------' +*/ |