1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
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 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|
`-------------------------------------------------------------' `---' `---------------'
*/
|
