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
|
// tilt_input.h
//
// Copyright (c) 2007 The Dasher Team
//
// This file is part of Dasher.
//
// Dasher is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Dasher 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 Dasher; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef __joystick_input_h__
#define __joystick_input_h__
#include "../DasherCore/DasherInput.h"
#include "../DasherCore/DasherInterfaceBase.h"
#include "../DasherCore/DasherTypes.h"
#include "Timer.h"
#include <iostream>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <termios.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#define BAUDRATE B38400
#define MODEMDEVICE "/dev/ttyUSB0"
#define _POSIX_SOURCE 1 /* POSIX compliant source */
#define FALSE 0
#define TRUE 1
using namespace Dasher;
class CDasherTiltInput : public CDasherInput {
public:
CDasherTiltInput(CEventHandler * pEventHandler, CSettingsStore * pSettingsStore, CDasherInterfaceBase *pInterface)
: CDasherInput(pEventHandler, pSettingsStore, 19, "Tilt Input") {
m_pInterface = pInterface;
};
// Fill pCoordinates with iN coordinate values, return 0 if the
// values were in screen coordinates or 1 if the values were in
// Dasher coordinates.
virtual int GetCoordinates(int iN, myint * pCoordinates) {
UpdateCoordinates();
pCoordinates[0] = m_iX;
pCoordinates[1] = m_iY;
return 1;
};
// Get the number of co-ordinates that this device supplies
virtual int GetCoordinateCount() {
return 2;
};
void SetCoordinates(myint _iX, myint _iY) {
m_iX = _iX;
m_iY = _iY;
};
void Activate() {
// TODO: Error handling, check versioning of kernel joystick driver
OpenDevice();
UpdateCoordinates();
};
void Deactivate() {
CloseDevice();
};
private:
void UpdateCoordinates() {
write(m_iFD, "z", 1);
char buf[4];
int res = read(m_iFD, buf, 3);
buf[res]=0;
unsigned int iValue = static_cast<unsigned char>(buf[0]);
unsigned int iValue2 = static_cast<unsigned char>(buf[1]);
m_iX = ((signed int)iValue - 128) * 2048 / 16 + 2048;
m_iY = ((signed int)iValue2 - 128) * 2048 / 16 + 2048;
//std::cout << iValue << " - " << iValue2 << std::endl;
}
void OpenDevice() {
struct termios newtio;
m_iFD = open(MODEMDEVICE, O_RDWR | O_NOCTTY );
if (m_iFD <0) {perror(MODEMDEVICE); exit(-1); }
//std::cout << "File descriptor: " << m_iFD << std::endl;
tcgetattr(m_iFD,&oldtio); /* save current port settings */
bzero(&newtio, sizeof(newtio));
newtio.c_cflag = BAUDRATE | CRTSCTS | CS8 | CLOCAL | CREAD;
newtio.c_iflag = IGNPAR;
newtio.c_oflag = 0;
/* set input mode (non-canonical, no echo,...) */
newtio.c_lflag = 0;
newtio.c_cc[VTIME] = 0; /* inter-character timer unused */
newtio.c_cc[VMIN] = 3; /* blocking read until 5 chars received */
tcflush(m_iFD, TCIFLUSH);
tcsetattr(m_iFD,TCSANOW,&newtio);
}
void CloseDevice() {
tcsetattr(m_iFD,TCSANOW,&oldtio);
close(m_iFD);
}
myint m_iX;
myint m_iY;
int m_iFD;
struct termios oldtio;
CDasherInterfaceBase *m_pInterface;
};
#endif
|
