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
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
|
/*
* FCI FC2580 tuner driver, taken from the kernel driver that can be found
* on http://linux.terratec.de/tv_en.html
*
* This driver is a mess, and should be cleaned up/rewritten.
*
*/
#include <stdint.h>
#include "rtlsdr_i2c.h"
#include "tuner_fc2580.h"
/* 16.384 MHz (at least on the Logilink VG0002A) */
#define CRYSTAL_FREQ 16384000
/* glue functions to rtl-sdr code */
fc2580_fci_result_type fc2580_i2c_write(void *pTuner, unsigned char reg, unsigned char val)
{
uint8_t data[2];
data[0] = reg;
data[1] = val;
if (rtlsdr_i2c_write_fn(pTuner, FC2580_I2C_ADDR, data, 2) < 0)
return FC2580_FCI_FAIL;
return FC2580_FCI_SUCCESS;
}
fc2580_fci_result_type fc2580_i2c_read(void *pTuner, unsigned char reg, unsigned char *read_data)
{
uint8_t data = reg;
if (rtlsdr_i2c_write_fn(pTuner, FC2580_I2C_ADDR, &data, 1) < 0)
return FC2580_FCI_FAIL;
if (rtlsdr_i2c_read_fn(pTuner, FC2580_I2C_ADDR, &data, 1) < 0)
return FC2580_FCI_FAIL;
*read_data = data;
return FC2580_FCI_SUCCESS;
}
int
fc2580_Initialize(
void *pTuner
)
{
int AgcMode;
unsigned int CrystalFreqKhz;
//TODO set AGC mode
AgcMode = FC2580_AGC_EXTERNAL;
// Initialize tuner with AGC mode.
// Note: CrystalFreqKhz = round(CrystalFreqHz / 1000)
CrystalFreqKhz = (unsigned int)((CRYSTAL_FREQ + 500) / 1000);
if(fc2580_set_init(pTuner, AgcMode, CrystalFreqKhz) != FC2580_FCI_SUCCESS)
goto error_status_initialize_tuner;
return FUNCTION_SUCCESS;
error_status_initialize_tuner:
return FUNCTION_ERROR;
}
int
fc2580_SetRfFreqHz(
void *pTuner,
unsigned long RfFreqHz
)
{
unsigned int RfFreqKhz;
unsigned int CrystalFreqKhz;
// Set tuner RF frequency in KHz.
// Note: RfFreqKhz = round(RfFreqHz / 1000)
// CrystalFreqKhz = round(CrystalFreqHz / 1000)
RfFreqKhz = (unsigned int)((RfFreqHz + 500) / 1000);
CrystalFreqKhz = (unsigned int)((CRYSTAL_FREQ + 500) / 1000);
if(fc2580_set_freq(pTuner, RfFreqKhz, CrystalFreqKhz) != FC2580_FCI_SUCCESS)
goto error_status_set_tuner_rf_frequency;
return FUNCTION_SUCCESS;
error_status_set_tuner_rf_frequency:
return FUNCTION_ERROR;
}
/**
@brief Set FC2580 tuner bandwidth mode.
*/
int
fc2580_SetBandwidthMode(
void *pTuner,
int BandwidthMode
)
{
unsigned int CrystalFreqKhz;
// Set tuner bandwidth mode.
// Note: CrystalFreqKhz = round(CrystalFreqHz / 1000)
CrystalFreqKhz = (unsigned int)((CRYSTAL_FREQ + 500) / 1000);
if(fc2580_set_filter(pTuner, (unsigned char)BandwidthMode, CrystalFreqKhz) != FC2580_FCI_SUCCESS)
goto error_status_set_tuner_bandwidth_mode;
return FUNCTION_SUCCESS;
error_status_set_tuner_bandwidth_mode:
return FUNCTION_ERROR;
}
void fc2580_wait_msec(void *pTuner, int a)
{
/* USB latency is enough for now ;) */
// usleep(a * 1000);
return;
}
/*==============================================================================
fc2580 initial setting
This function is a generic function which gets called to initialize
fc2580 in DVB-H mode or L-Band TDMB mode
<input parameter>
ifagc_mode
type : integer
1 : Internal AGC
2 : Voltage Control Mode
==============================================================================*/
fc2580_fci_result_type fc2580_set_init( void *pTuner, int ifagc_mode, unsigned int freq_xtal )
{
fc2580_fci_result_type result = FC2580_FCI_SUCCESS;
result &= fc2580_i2c_write(pTuner, 0x00, 0x00); /*** Confidential ***/
result &= fc2580_i2c_write(pTuner, 0x12, 0x86);
result &= fc2580_i2c_write(pTuner, 0x14, 0x5C);
result &= fc2580_i2c_write(pTuner, 0x16, 0x3C);
result &= fc2580_i2c_write(pTuner, 0x1F, 0xD2);
result &= fc2580_i2c_write(pTuner, 0x09, 0xD7);
result &= fc2580_i2c_write(pTuner, 0x0B, 0xD5);
result &= fc2580_i2c_write(pTuner, 0x0C, 0x32);
result &= fc2580_i2c_write(pTuner, 0x0E, 0x43);
result &= fc2580_i2c_write(pTuner, 0x21, 0x0A);
result &= fc2580_i2c_write(pTuner, 0x22, 0x82);
if( ifagc_mode == 1 )
{
result &= fc2580_i2c_write(pTuner, 0x45, 0x10); //internal AGC
result &= fc2580_i2c_write(pTuner, 0x4C, 0x00); //HOLD_AGC polarity
}
else if( ifagc_mode == 2 )
{
result &= fc2580_i2c_write(pTuner, 0x45, 0x20); //Voltage Control Mode
result &= fc2580_i2c_write(pTuner, 0x4C, 0x02); //HOLD_AGC polarity
}
result &= fc2580_i2c_write(pTuner, 0x3F, 0x88);
result &= fc2580_i2c_write(pTuner, 0x02, 0x0E);
result &= fc2580_i2c_write(pTuner, 0x58, 0x14);
result &= fc2580_set_filter(pTuner, 8, freq_xtal); //BW = 7.8MHz
return result;
}
/*==============================================================================
fc2580 frequency setting
This function is a generic function which gets called to change LO Frequency
of fc2580 in DVB-H mode or L-Band TDMB mode
<input parameter>
freq_xtal: kHz
f_lo
Value of target LO Frequency in 'kHz' unit
ex) 2.6GHz = 2600000
==============================================================================*/
fc2580_fci_result_type fc2580_set_freq( void *pTuner, unsigned int f_lo, unsigned int freq_xtal )
{
unsigned int f_diff, f_diff_shifted, n_val, k_val;
unsigned int f_vco, r_val, f_comp;
unsigned char pre_shift_bits = 4;// number of preshift to prevent overflow in shifting f_diff to f_diff_shifted
unsigned char data_0x18;
unsigned char data_0x02 = (USE_EXT_CLK<<5)|0x0E;
fc2580_band_type band = ( f_lo > 1000000 )? FC2580_L_BAND : ( f_lo > 400000 )? FC2580_UHF_BAND : FC2580_VHF_BAND;
fc2580_fci_result_type result = FC2580_FCI_SUCCESS;
f_vco = ( band == FC2580_UHF_BAND )? f_lo * 4 : (( band == FC2580_L_BAND )? f_lo * 2 : f_lo * 12);
r_val = ( f_vco >= 2*76*freq_xtal )? 1 : ( f_vco >= 76*freq_xtal )? 2 : 4;
f_comp = freq_xtal/r_val;
n_val = ( f_vco / 2 ) / f_comp;
f_diff = f_vco - 2* f_comp * n_val;
f_diff_shifted = f_diff << ( 20 - pre_shift_bits );
k_val = f_diff_shifted / ( ( 2* f_comp ) >> pre_shift_bits );
if( f_diff_shifted - k_val * ( ( 2* f_comp ) >> pre_shift_bits ) >= ( f_comp >> pre_shift_bits ) )
k_val = k_val + 1;
if( f_vco >= BORDER_FREQ ) //Select VCO Band
data_0x02 = data_0x02 | 0x08; //0x02[3] = 1;
else
data_0x02 = data_0x02 & 0xF7; //0x02[3] = 0;
// if( band != curr_band ) {
switch(band)
{
case FC2580_UHF_BAND:
data_0x02 = (data_0x02 & 0x3F);
result &= fc2580_i2c_write(pTuner, 0x25, 0xF0);
result &= fc2580_i2c_write(pTuner, 0x27, 0x77);
result &= fc2580_i2c_write(pTuner, 0x28, 0x53);
result &= fc2580_i2c_write(pTuner, 0x29, 0x60);
result &= fc2580_i2c_write(pTuner, 0x30, 0x09);
result &= fc2580_i2c_write(pTuner, 0x50, 0x8C);
result &= fc2580_i2c_write(pTuner, 0x53, 0x50);
if( f_lo < 538000 )
result &= fc2580_i2c_write(pTuner, 0x5F, 0x13);
else
result &= fc2580_i2c_write(pTuner, 0x5F, 0x15);
if( f_lo < 538000 )
{
result &= fc2580_i2c_write(pTuner, 0x61, 0x07);
result &= fc2580_i2c_write(pTuner, 0x62, 0x06);
result &= fc2580_i2c_write(pTuner, 0x67, 0x06);
result &= fc2580_i2c_write(pTuner, 0x68, 0x08);
result &= fc2580_i2c_write(pTuner, 0x69, 0x10);
result &= fc2580_i2c_write(pTuner, 0x6A, 0x12);
}
else if( f_lo < 794000 )
{
result &= fc2580_i2c_write(pTuner, 0x61, 0x03);
result &= fc2580_i2c_write(pTuner, 0x62, 0x03);
result &= fc2580_i2c_write(pTuner, 0x67, 0x03); //ACI improve
result &= fc2580_i2c_write(pTuner, 0x68, 0x05); //ACI improve
result &= fc2580_i2c_write(pTuner, 0x69, 0x0C);
result &= fc2580_i2c_write(pTuner, 0x6A, 0x0E);
}
else
{
result &= fc2580_i2c_write(pTuner, 0x61, 0x07);
result &= fc2580_i2c_write(pTuner, 0x62, 0x06);
result &= fc2580_i2c_write(pTuner, 0x67, 0x07);
result &= fc2580_i2c_write(pTuner, 0x68, 0x09);
result &= fc2580_i2c_write(pTuner, 0x69, 0x10);
result &= fc2580_i2c_write(pTuner, 0x6A, 0x12);
}
result &= fc2580_i2c_write(pTuner, 0x63, 0x15);
result &= fc2580_i2c_write(pTuner, 0x6B, 0x0B);
result &= fc2580_i2c_write(pTuner, 0x6C, 0x0C);
result &= fc2580_i2c_write(pTuner, 0x6D, 0x78);
result &= fc2580_i2c_write(pTuner, 0x6E, 0x32);
result &= fc2580_i2c_write(pTuner, 0x6F, 0x14);
result &= fc2580_set_filter(pTuner, 8, freq_xtal); //BW = 7.8MHz
break;
case FC2580_VHF_BAND:
data_0x02 = (data_0x02 & 0x3F) | 0x80;
result &= fc2580_i2c_write(pTuner, 0x27, 0x77);
result &= fc2580_i2c_write(pTuner, 0x28, 0x33);
result &= fc2580_i2c_write(pTuner, 0x29, 0x40);
result &= fc2580_i2c_write(pTuner, 0x30, 0x09);
result &= fc2580_i2c_write(pTuner, 0x50, 0x8C);
result &= fc2580_i2c_write(pTuner, 0x53, 0x50);
result &= fc2580_i2c_write(pTuner, 0x5F, 0x0F);
result &= fc2580_i2c_write(pTuner, 0x61, 0x07);
result &= fc2580_i2c_write(pTuner, 0x62, 0x00);
result &= fc2580_i2c_write(pTuner, 0x63, 0x15);
result &= fc2580_i2c_write(pTuner, 0x67, 0x03);
result &= fc2580_i2c_write(pTuner, 0x68, 0x05);
result &= fc2580_i2c_write(pTuner, 0x69, 0x10);
result &= fc2580_i2c_write(pTuner, 0x6A, 0x12);
result &= fc2580_i2c_write(pTuner, 0x6B, 0x08);
result &= fc2580_i2c_write(pTuner, 0x6C, 0x0A);
result &= fc2580_i2c_write(pTuner, 0x6D, 0x78);
result &= fc2580_i2c_write(pTuner, 0x6E, 0x32);
result &= fc2580_i2c_write(pTuner, 0x6F, 0x54);
result &= fc2580_set_filter(pTuner, 7, freq_xtal); //BW = 6.8MHz
break;
case FC2580_L_BAND:
data_0x02 = (data_0x02 & 0x3F) | 0x40;
result &= fc2580_i2c_write(pTuner, 0x2B, 0x70);
result &= fc2580_i2c_write(pTuner, 0x2C, 0x37);
result &= fc2580_i2c_write(pTuner, 0x2D, 0xE7);
result &= fc2580_i2c_write(pTuner, 0x30, 0x09);
result &= fc2580_i2c_write(pTuner, 0x44, 0x20);
result &= fc2580_i2c_write(pTuner, 0x50, 0x8C);
result &= fc2580_i2c_write(pTuner, 0x53, 0x50);
result &= fc2580_i2c_write(pTuner, 0x5F, 0x0F);
result &= fc2580_i2c_write(pTuner, 0x61, 0x0F);
result &= fc2580_i2c_write(pTuner, 0x62, 0x00);
result &= fc2580_i2c_write(pTuner, 0x63, 0x13);
result &= fc2580_i2c_write(pTuner, 0x67, 0x00);
result &= fc2580_i2c_write(pTuner, 0x68, 0x02);
result &= fc2580_i2c_write(pTuner, 0x69, 0x0C);
result &= fc2580_i2c_write(pTuner, 0x6A, 0x0E);
result &= fc2580_i2c_write(pTuner, 0x6B, 0x08);
result &= fc2580_i2c_write(pTuner, 0x6C, 0x0A);
result &= fc2580_i2c_write(pTuner, 0x6D, 0xA0);
result &= fc2580_i2c_write(pTuner, 0x6E, 0x50);
result &= fc2580_i2c_write(pTuner, 0x6F, 0x14);
result &= fc2580_set_filter(pTuner, 1, freq_xtal); //BW = 1.53MHz
break;
default:
break;
}
// curr_band = band;
// }
//A command about AGC clock's pre-divide ratio
if( freq_xtal >= 28000 )
result &= fc2580_i2c_write(pTuner, 0x4B, 0x22 );
//Commands about VCO Band and PLL setting.
result &= fc2580_i2c_write(pTuner, 0x02, data_0x02);
data_0x18 = ( ( r_val == 1 )? 0x00 : ( ( r_val == 2 )? 0x10 : 0x20 ) ) + (unsigned char)(k_val >> 16);
result &= fc2580_i2c_write(pTuner, 0x18, data_0x18); //Load 'R' value and high part of 'K' values
result &= fc2580_i2c_write(pTuner, 0x1A, (unsigned char)( k_val >> 8 ) ); //Load middle part of 'K' value
result &= fc2580_i2c_write(pTuner, 0x1B, (unsigned char)( k_val ) ); //Load lower part of 'K' value
result &= fc2580_i2c_write(pTuner, 0x1C, (unsigned char)( n_val ) ); //Load 'N' value
//A command about UHF LNA Load Cap
if( band == FC2580_UHF_BAND )
result &= fc2580_i2c_write(pTuner, 0x2D, ( f_lo <= (unsigned int)794000 )? 0x9F : 0x8F ); //LNA_OUT_CAP
return result;
}
/*==============================================================================
fc2580 filter BW setting
This function is a generic function which gets called to change Bandwidth
frequency of fc2580's channel selection filter
<input parameter>
freq_xtal: kHz
filter_bw
1 : 1.53MHz(TDMB)
6 : 6MHz (Bandwidth 6MHz)
7 : 6.8MHz (Bandwidth 7MHz)
8 : 7.8MHz (Bandwidth 8MHz)
==============================================================================*/
fc2580_fci_result_type fc2580_set_filter( void *pTuner, unsigned char filter_bw, unsigned int freq_xtal )
{
unsigned char cal_mon, i;
fc2580_fci_result_type result = FC2580_FCI_SUCCESS;
if(filter_bw == 1)
{
result &= fc2580_i2c_write(pTuner, 0x36, 0x1C);
result &= fc2580_i2c_write(pTuner, 0x37, (unsigned char)(4151*freq_xtal/1000000) );
result &= fc2580_i2c_write(pTuner, 0x39, 0x00);
result &= fc2580_i2c_write(pTuner, 0x2E, 0x09);
}
if(filter_bw == 6)
{
result &= fc2580_i2c_write(pTuner, 0x36, 0x18);
result &= fc2580_i2c_write(pTuner, 0x37, (unsigned char)(4400*freq_xtal/1000000) );
result &= fc2580_i2c_write(pTuner, 0x39, 0x00);
result &= fc2580_i2c_write(pTuner, 0x2E, 0x09);
}
else if(filter_bw == 7)
{
result &= fc2580_i2c_write(pTuner, 0x36, 0x18);
result &= fc2580_i2c_write(pTuner, 0x37, (unsigned char)(3910*freq_xtal/1000000) );
result &= fc2580_i2c_write(pTuner, 0x39, 0x80);
result &= fc2580_i2c_write(pTuner, 0x2E, 0x09);
}
else if(filter_bw == 8)
{
result &= fc2580_i2c_write(pTuner, 0x36, 0x18);
result &= fc2580_i2c_write(pTuner, 0x37, (unsigned char)(3300*freq_xtal/1000000) );
result &= fc2580_i2c_write(pTuner, 0x39, 0x80);
result &= fc2580_i2c_write(pTuner, 0x2E, 0x09);
}
for(i=0; i<5; i++)
{
fc2580_wait_msec(pTuner, 5);//wait 5ms
result &= fc2580_i2c_read(pTuner, 0x2F, &cal_mon);
if( (cal_mon & 0xC0) != 0xC0)
{
result &= fc2580_i2c_write(pTuner, 0x2E, 0x01);
result &= fc2580_i2c_write(pTuner, 0x2E, 0x09);
}
else
break;
}
result &= fc2580_i2c_write(pTuner, 0x2E, 0x01);
return result;
}
/*==============================================================================
fc2580 RSSI function
This function is a generic function which returns fc2580's
current RSSI value.
<input parameter>
none
<return value>
int
rssi : estimated input power.
==============================================================================*/
//int fc2580_get_rssi(void) {
//
// unsigned char s_lna, s_rfvga, s_cfs, s_ifvga;
// int ofs_lna, ofs_rfvga, ofs_csf, ofs_ifvga, rssi;
//
// fc2580_i2c_read(0x71, &s_lna );
// fc2580_i2c_read(0x72, &s_rfvga );
// fc2580_i2c_read(0x73, &s_cfs );
// fc2580_i2c_read(0x74, &s_ifvga );
//
//
// ofs_lna =
// (curr_band==FC2580_UHF_BAND)?
// (s_lna==0)? 0 :
// (s_lna==1)? -6 :
// (s_lna==2)? -17 :
// (s_lna==3)? -22 : -30 :
// (curr_band==FC2580_VHF_BAND)?
// (s_lna==0)? 0 :
// (s_lna==1)? -6 :
// (s_lna==2)? -19 :
// (s_lna==3)? -24 : -32 :
// (curr_band==FC2580_L_BAND)?
// (s_lna==0)? 0 :
// (s_lna==1)? -6 :
// (s_lna==2)? -11 :
// (s_lna==3)? -16 : -34 :
// 0;//FC2580_NO_BAND
// ofs_rfvga = -s_rfvga+((s_rfvga>=11)? 1 : 0) + ((s_rfvga>=18)? 1 : 0);
// ofs_csf = -6*s_cfs;
// ofs_ifvga = s_ifvga/4;
//
// return rssi = ofs_lna+ofs_rfvga+ofs_csf+ofs_ifvga+OFS_RSSI;
//
//}
/*==============================================================================
fc2580 Xtal frequency Setting
This function is a generic function which sets
the frequency of xtal.
<input parameter>
frequency
frequency value of internal(external) Xtal(clock) in kHz unit.
==============================================================================*/
//void fc2580_set_freq_xtal(unsigned int frequency) {
//
// freq_xtal = frequency;
//
//}
|
