/
ppiwin.cpp
385 lines (286 loc) · 7.65 KB
/
ppiwin.cpp
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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2003, 2004 Eric B. Weddington <ericw@evcohs.com>
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* $Id: ppiwin.cpp,v 1.2 2007/04/09 00:39:57 lady_ada Exp $ */
/*
This is the parallel port interface for Windows built using Cygwin.
In the ppi_* functions that access the parallel port registers,
fd = parallel port address
reg = register as defined in an enum in ppi.h. This must be converted
to a proper offset of the base address.
*/
#if defined (WIN32NATIVE)
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <windows.h>
#include <sys/time.h>
#include <windows.h>
#include "ppi.h"
#define DEVICE_LPT1 "lpt1"
#define DEVICE_LPT2 "lpt2"
#define DEVICE_LPT3 "lpt3"
#define DEVICE_MAX 3
typedef struct
{
const char *name;
int base_address;
} winpp;
static const winpp winports[DEVICE_MAX] =
{
{DEVICE_LPT1, 0x378},
{DEVICE_LPT2, 0x278},
{DEVICE_LPT3, 0x3BC},
};
/* FUNCTION PROTOTYPES */
static int winnt_pp_open(void);
static unsigned short port_get(int fd, int reg);
static unsigned char reg2offset(int reg);
static unsigned char inb(unsigned short port);
static void outb(unsigned char value, unsigned short port);
/* FUNCTION DEFINITIONS */
int ppi_open(char *port)
{
unsigned char i;
int fd;
fd = winnt_pp_open();
if(fd < 0)
{
fprintf(stderr, "Can't open device \"giveio\"\n\n");
return(-1);
}
/* Search the windows port names for a match */
fd = -1;
for(i = 0; i < DEVICE_MAX; i++)
{
if(strcmp(winports[i].name, port) == 0)
{
/* Set the file descriptor with the Windows parallel port base address. */
fd = winports[i].base_address;
break;
}
}
if(fd < 0)
{
fprintf(stderr, "Can't open device \"%s\"\n\n", port);
return(-1);
}
return(fd);
}
#define DRIVERNAME "\\\\.\\giveio"
static int winnt_pp_open(void)
{
// Only try to use giveio under Windows NT/2000/XP.
OSVERSIONINFO ver_info;
memset(&ver_info, 0, sizeof(ver_info));
ver_info.dwOSVersionInfoSize = sizeof(ver_info);
if(!GetVersionEx(&ver_info))
{
return(-1);
}
else if(ver_info.dwPlatformId == VER_PLATFORM_WIN32_NT)
{
HANDLE h = CreateFile(DRIVERNAME,
GENERIC_READ,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
if(h == INVALID_HANDLE_VALUE)
{
return(-1);
}
/* Close immediately. The process now has the rights it needs. */
if(h != NULL)
{
CloseHandle(h);
}
}
return(0);
}
void ppi_close(int fd)
{
return;
}
/*
* set the indicated bit of the specified register.
*/
int ppi_set(int fd, int reg, int bit)
{
unsigned char v;
unsigned short port;
port = port_get(fd, reg);
v = inb(port);
v |= bit;
outb(v, port);
return 0;
}
/*
* clear the indicated bit of the specified register.
*/
int ppi_clr(int fd, int reg, int bit)
{
unsigned char v;
unsigned short port;
port = port_get(fd, reg);
v = inb(port);
v &= ~bit;
outb(v, port);
return 0;
}
/*
* get the indicated bit of the specified register.
*/
int ppi_get(int fd, int reg, int bit)
{
unsigned char v;
v = inb(port_get(fd, reg));
v &= bit;
return(v);
}
/*
* toggle the indicated bit of the specified register.
*/
int ppi_toggle(int fd, int reg, int bit)
{
unsigned char v;
unsigned short port;
port = port_get(fd, reg);
v = inb(port);
v ^= bit;
outb(v, port);
return 0;
}
/*
* get all bits of the specified register.
*/
int ppi_getall(int fd, int reg)
{
unsigned char v;
v = inb(port_get(fd, reg));
return((int)v);
}
/*
* set all bits of the specified register to val.
*/
int ppi_setall(int fd, int reg, int val)
{
outb((unsigned char)val, port_get(fd, reg));
return 0;
}
/* Calculate port address to access. */
static unsigned short port_get(int fd, int reg)
{
return((unsigned short)(fd + reg2offset(reg)));
}
/* Convert register enum to offset of base address. */
static unsigned char reg2offset(int reg)
{
unsigned char offset = 0;
switch(reg)
{
case PPIDATA:
{
offset = 0;
break;
}
case PPISTATUS:
{
offset = 1;
break;
}
case PPICTRL:
{
offset = 2;
break;
}
}
return(offset);
}
/* Read in value from port. */
static unsigned char inb(unsigned short port)
{
unsigned char t;
asm volatile ("in %1, %0"
: "=a" (t)
: "d" (port));
return t;
}
/* Write value to port. */
static void outb(unsigned char value, unsigned short port)
{
asm volatile ("out %1, %0"
:
: "d" (port), "a" (value) );
return;
}
int gettimeofday(struct timeval*tv, void*z){
// i've found only ms resolution, avrdude expects us
SYSTEMTIME st;
GetSystemTime(&st);
tv->tv_sec=(long)(st.wSecond+st.wMinute*60+st.wHour*3600);
tv->tv_usec=(long)(st.wMilliseconds*1000);
}
// #define W32USLEEPDBG
#ifdef W32USLEEPDBG
# define DEBUG_QueryPerformanceCounter(arg) QueryPerformanceCounter(arg)
# define DEBUG_DisplayTimingInfo(start, stop, freq, us, has_highperf) \
do { \
unsigned long dt; \
dt = (unsigned long)((stop.QuadPart - start.QuadPart) * 1000 * 1000 \
/ freq.QuadPart); \
fprintf(stderr, \
"hpt:%i usleep usec:%lu sleep msec:%lu timed usec:%lu\n", \
has_highperf, us, ((us + 999) / 1000), dt); \
} while (0)
#else
# define DEBUG_QueryPerformanceCounter(arg)
# define DEBUG_DisplayTimingInfo(start, stop, freq, us, has_highperf)
#endif
void usleep(unsigned long us)
{
int has_highperf;
LARGE_INTEGER freq,start,stop,loopend;
// workaround: although usleep is very precise if using
// high-performance-timers there are sometimes problems with
// verify - increasing the delay helps sometimes but not
// realiably. There must be some other problem. Maybe just
// with my test-hardware maybe in the code-base.
//// us=(unsigned long) (us*1.5);
has_highperf=QueryPerformanceFrequency(&freq);
//has_highperf=0; // debug
if (has_highperf) {
QueryPerformanceCounter(&start);
loopend.QuadPart=start.QuadPart+freq.QuadPart*us/(1000*1000);
do {
QueryPerformanceCounter(&stop);
} while (stop.QuadPart<=loopend.QuadPart);
}
else {
DEBUG_QueryPerformanceCounter(&start);
Sleep(1);
Sleep( (DWORD)((us+999)/1000) );
DEBUG_QueryPerformanceCounter(&stop);
}
DEBUG_DisplayTimingInfo(start, stop, freq, us, has_highperf);
}
#endif