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
|
/*
* Tool for watching the dib3000*-demodulators,
* with an extended output.
*
* Copyright (C) 2005 by Patrick Boettcher <patrick.boettcher@desy.de>
*
* 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.
* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
*/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <getopt.h>
#include <signal.h>
#include <math.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <linux/types.h>
#include "dib-i2c.h"
#include "dib3000-watch.h"
#include "dib3000.h"
void usage (void)
{
verb("usage: dib3000-watch -d <i2c-device> -a <i2c-address> [-o <type>] [-i <seconds>]\n"
" -d normally one of /dev/i2c-[0-255]\n"
" -a is 8 for DiB3000M-B and 9, 10, 11 or 12 for DiB3000M-C or DiB3000-P\n"
" -o output type (print|csv) (default: print)\n"
" -i query interval in seconds (default: 0.1)\n"
"\n"
"Don't forget to run tzap or any other dvb-tune program (vdr, kaxtv) in order to tune a channel,\n"
"tuning isn't done by this tool.\n"
"\n"
"A lot of thing have been taken for the dibusb, dib3000m[bc] driver from kernel and\n"
"from t_demod-test software created by DiBcom. Both is GPL, so is dib-demod-watch.\n"
"\n"
"Copyright (C) 2005 by Patrick Boettcher <patrick.boettcher@desy.de>\n"
"\n"
"The source of this tool is released under the GPL.\n"
);
exit(1);
}
__u16 dib_read_reg(struct dib_demod *dib,__u16 reg)
{
int ret;
__u8 wb[] = { ((reg >> 8) | 0x80) & 0xff, reg & 0xff };
__u8 rb[2];
struct i2c_msg msg[] = {
{ .addr = dib->i2c_addr, .flags = 0, .buf = wb, .len = 2 },
{ .addr = dib->i2c_addr, .flags = I2C_M_RD, .buf = rb, .len = 2 },
};
struct i2c_rdwr_ioctl_data i2c_data = {
.msgs = msg,
.nmsgs = 2,
};
if ((ret = ioctl(dib->fd,I2C_RDWR,&i2c_data)) != 2) {
err("i2c_rdwr read failed. (%d)\n",ret);
return 0;
}
return (rb[0] << 8)| rb[1];
};
int dib_write_reg(struct dib_demod *dib, __u16 reg, __u16 val)
{
int ret;
__u8 b[] = {
(reg >> 8) & 0xff, reg & 0xff,
(val >> 8) & 0xff, val & 0xff,
};
struct i2c_msg msg[] = {
{ .addr = dib->i2c_addr, .flags = 0, .buf = b, .len = 4 }
};
struct i2c_rdwr_ioctl_data i2c_data = {
.msgs = msg,
.nmsgs = 1,
};
if ((ret = ioctl(dib->fd,I2C_RDWR,&i2c_data)) != 1) {
err("i2c_rdwr write failed. (%d)\n",ret);
return -1;
}
return 0;
}
int dib3000mb_monitoring(struct dib_demod *dib,struct dib3000mb_monitoring *m)
{
int dds_freq, p_dds_freq,
n_agc_power = dib_read_reg(dib,DIB3000MB_REG_AGC_POWER),
rf_power = dib_read_reg(dib,DIB3000MB_REG_RF_POWER),
timing_offset;
double ad_power_dB, minor_power;
m->invspec = dib_read_reg(dib,DIB3000MB_REG_DDS_INV);
m->nfft = dib_read_reg(dib,DIB3000MB_REG_TPS_FFT);
m->agc_lock = dib_read_reg(dib,DIB3000MB_REG_AGC_LOCK);
m->carrier_lock = dib_read_reg(dib,DIB3000MB_REG_CARRIER_LOCK);
m->tps_lock = dib_read_reg(dib,DIB3000MB_REG_TPS_LOCK);
m->vit_lock = dib_read_reg(dib,DIB3000MB_REG_VIT_LCK);
m->ts_sync_lock = dib_read_reg(dib,DIB3000MB_REG_TS_SYNC_LOCK);
m->ts_data_lock = dib_read_reg(dib,DIB3000MB_REG_TS_RS_LOCK);
p_dds_freq = ((dib_read_reg(dib,DIB3000MB_REG_DDS_FREQ_MSB) & 0xff) << 8) |
((dib_read_reg(dib,DIB3000MB_REG_DDS_FREQ_LSB) & 0xff00) >> 8);
dds_freq = ((dib_read_reg(dib,DIB3000MB_REG_DDS_VALUE_MSB) & 0xff) << 8) |
((dib_read_reg(dib,DIB3000MB_REG_DDS_VALUE_LSB) & 0xff00) >> 8);
if (m->invspec)
dds_freq = (1 << 16) - dds_freq;
m->carrier_offset = (double)(dds_freq - p_dds_freq) / (double)(1 << 16) * DEF_SampFreq_KHz;
m->ber = (double)((dib_read_reg(dib,DIB3000MB_REG_BER_MSB) << 16) | dib_read_reg(dib,DIB3000MB_REG_BER_LSB)) / (double) 1e8;
m->per = dib_read_reg(dib,DIB3000MB_REG_PACKET_ERROR_RATE);
m->unc = dib_read_reg(dib,DIB3000MB_REG_UNC);
m->fft_pos = dib_read_reg(dib,DIB3000MB_REG_FFT_WINDOW_POS);
m->snr = 10.0 * log10( (double)(dib_read_reg(dib,DIB3000MB_REG_SIGNAL_POWER) << 8) /
(double)((dib_read_reg(dib,DIB3000MB_REG_NOISE_POWER_MSB) << 16) + dib_read_reg(dib,DIB3000MB_REG_NOISE_POWER_LSB)));
m->mer = (double) ((dib_read_reg(dib,DIB3000MB_REG_MER_MSB) << 16) + dib_read_reg(dib,DIB3000MB_REG_MER_LSB))
/ (double) (1<<9) / (m->nfft ? 767.0 : 191.0);
if (n_agc_power == 0)
n_agc_power = 1;
ad_power_dB = 10 * log10( (double)(n_agc_power) / (double)(1<<16));
minor_power = ad_power_dB - DEF_agc_ref_dB ;
m->rf_power = -DEF_gain_slope_dB * (double)rf_power/(double)(1<<16) + DEF_gain_delta_dB + minor_power;
timing_offset =
(dib_read_reg(dib,DIB3000MB_REG_TIMING_OFFSET_MSB) << 16) + dib_read_reg(dib,DIB3000MB_REG_TIMING_OFFSET_LSB);
if (timing_offset >= 0x800000)
timing_offset |= 0xff000000;
m->timing_offset_ppm = -(double)timing_offset / (double)(m->nfft ? 8192 : 2048) * 1e6 / (double)(1<<20);
return 0;
}
int dib3000mb_print_monitoring(struct dib3000mb_monitoring *m)
{
printf("DiB3000M-B status\n\n");
printf(" AGC lock: %10d\n",m->agc_lock);
printf(" carrier lock: %10d\n",m->carrier_lock);
printf(" TPS synchronize lock: %10d\n",m->tps_lock);
printf(" Viterbi lock: %10d\n",m->vit_lock);
printf(" MPEG TS synchronize lock: %10d\n",m->ts_sync_lock);
printf(" MPEG TS data lock: %10d\n",m->ts_data_lock);
printf("\n\n");
printf(" spectrum inversion: %10d\n",m->invspec);
printf(" carrier offset: %3.7g\n",m->carrier_offset);
printf("\n\n");
printf(" bit error rate: %3.7g\n",m->ber);
printf(" packet error rate: %10d\n",m->per);
printf(" packet error count: %10d\n",m->unc);
printf("\n\n");
printf(" fft position: %10d\n",m->fft_pos);
printf(" transmission mode: %10s\n",m->nfft ? "8k" : "2k");
printf("\n\n");
printf(" C / (N + I) = %3.7g\n",m->snr);
printf(" MER = %3.7g dB\n",m->mer);
printf(" RF power = %3.7g dBm\n",m->rf_power);
printf(" timing offset = %3.7g ppm\n",m->timing_offset_ppm);
return 0;
}
int interrupted;
void sighandler (int sig)
{
(void)sig;
interrupted = 1;
}
typedef enum {
OUT_PRINT = 0,
OUT_CSV,
} dib3000m_output_t;
int main (int argc, char * const argv[])
{
struct dib_demod dib;
struct dib3000mb_monitoring mon;
const char *dev = NULL;
float intervall = 0.1;
dib3000m_output_t out = OUT_PRINT;
int c;
while ((c = getopt(argc,argv,"d:a:o:i:")) != -1) {
switch (c) {
case 'd':
dev = optarg;
break;
case 'a':
dib.i2c_addr = atoi(optarg); /* The I2C address */
break;
case 'o':
if (strcasecmp(optarg,"print") == 0) out = OUT_PRINT;
else if (strcasecmp(optarg,"csv") == 0) out = OUT_CSV;
else usage();
break;
case 'i':
intervall = atof(optarg);
break;
default:
usage();
}
}
if (dev == NULL)
usage();
interrupted = 0;
signal(SIGINT, sighandler);
signal(SIGKILL, sighandler);
signal(SIGHUP, sighandler);
verb("will use '%s' as i2c-device and %d as i2c address.\n",dev,dib.i2c_addr);
if ((dib.fd = open(dev,O_RDWR)) < 0) {
err("could not open %s\n",dev);
exit(1);
}
if (ioctl(dib.fd,I2C_SLAVE,dib.i2c_addr) < 0) {
err("could not set i2c address\n");
exit(1);
}
if (dib_read_reg(&dib,DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM) {
err("could not find a dib3000 demodulator at i2c-address %d\n",dib.i2c_addr);
exit(1);
}
switch (dib_read_reg(&dib,DIB3000_REG_DEVICE_ID)) {
case DIB3000MB_DEVICE_ID:
verb("found a DiB3000M-B demodulator.\n");
dib.rev = DIB3000MB;
break;
case DIB3000MC_DEVICE_ID:
verb("found a DiB3000M-C demodulator.\n");
dib.rev = DIB3000MC;
break;
case DIB3000P_DEVICE_ID:
verb("found a DiB3000-P demodulator.\n");
dib.rev = DIB3000P;
break;
default:
err("unsupported demodulator found.\n");
}
while (!interrupted) {
switch (dib.rev) {
case DIB3000MB:
dib3000mb_monitoring(&dib,&mon);
if (out == OUT_PRINT) {
printf("\E[H\E[2J");
dib3000mb_print_monitoring(&mon);
} else if (out == OUT_CSV) {
printf("no csv output implemented yet.\n");
}
break;
default:
interrupted=1;
err("no monitoring writting for this demod, yet.\n");
}
usleep((int) (intervall * 1000000));
}
close(dib.fd);
return 0;
}
|
