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rtl-sdr-blog/src/tuner_fc0013.c

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initial commit Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-03-12 00:30:54 +01:00
/*
* Fitipower FC0013 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>
rework on autotools handling of private headers
2012-04-01 12:40:51 +02:00
#include "rtlsdr_i2c.h"
initial commit Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-03-12 00:30:54 +01:00
#include "tuner_fc0013.h"
#define CRYSTAL_FREQ 28800000
/* glue functions to rtl-sdr code */
rework towards a library interface
2012-03-27 19:49:44 +02:00
int FC0013_Write(void *pTuner, unsigned char RegAddr, unsigned char Byte)
initial commit Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-03-12 00:30:54 +01:00
{
uint8_t data[2];
data[0] = RegAddr;
data[1] = Byte;
introduce api to configure crystal oscillator frequency Usually both, the RTL and the tuner ICs use the same clock. Changing the clock may make sense if you are applying an external clock to the tuner or to compensate the frequency (and samplerate) error caused by the original cheap crystal. This commit covers all tuner drivers except of the Fitipower FC2580
2012-04-25 22:32:51 +02:00
if (rtlsdr_i2c_write_fn(pTuner, FC0013_I2C_ADDR, data, 2) < 0)
initial commit Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-03-12 00:30:54 +01:00
return FC0013_I2C_ERROR;
return FC0013_I2C_SUCCESS;
}
rework towards a library interface
2012-03-27 19:49:44 +02:00
int FC0013_Read(void *pTuner, unsigned char RegAddr, unsigned char *pByte)
initial commit Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-03-12 00:30:54 +01:00
{
uint8_t data = RegAddr;
introduce api to configure crystal oscillator frequency Usually both, the RTL and the tuner ICs use the same clock. Changing the clock may make sense if you are applying an external clock to the tuner or to compensate the frequency (and samplerate) error caused by the original cheap crystal. This commit covers all tuner drivers except of the Fitipower FC2580
2012-04-25 22:32:51 +02:00
if (rtlsdr_i2c_write_fn(pTuner, FC0013_I2C_ADDR, &data, 1) < 0)
initial commit Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-03-12 00:30:54 +01:00
return FC0013_I2C_ERROR;
introduce api to configure crystal oscillator frequency Usually both, the RTL and the tuner ICs use the same clock. Changing the clock may make sense if you are applying an external clock to the tuner or to compensate the frequency (and samplerate) error caused by the original cheap crystal. This commit covers all tuner drivers except of the Fitipower FC2580
2012-04-25 22:32:51 +02:00
if (rtlsdr_i2c_read_fn(pTuner, FC0013_I2C_ADDR, &data, 1) < 0)
initial commit Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-03-12 00:30:54 +01:00
return FC0013_I2C_ERROR;
*pByte = data;
return FC0013_I2C_SUCCESS;
}
rework towards a library interface
2012-03-27 19:49:44 +02:00
int FC0013_SetVhfTrack(void *pTuner, unsigned long FrequencyKHz)
initial commit Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-03-12 00:30:54 +01:00
{
unsigned char read_byte;
if (FrequencyKHz <= 177500) // VHF Track: 7
{
if(FC0013_Read(pTuner, 0x1D, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x1D, (read_byte & 0xE3) | 0x1C) != FC0013_I2C_SUCCESS) goto error_status;
}
else if (FrequencyKHz <= 184500) // VHF Track: 6
{
if(FC0013_Read(pTuner, 0x1D, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x1D, (read_byte & 0xE3) | 0x18) != FC0013_I2C_SUCCESS) goto error_status;
}
else if (FrequencyKHz <= 191500) // VHF Track: 5
{
if(FC0013_Read(pTuner, 0x1D, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x1D, (read_byte & 0xE3) | 0x14) != FC0013_I2C_SUCCESS) goto error_status;
}
else if (FrequencyKHz <= 198500) // VHF Track: 4
{
if(FC0013_Read(pTuner, 0x1D, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x1D, (read_byte & 0xE3) | 0x10) != FC0013_I2C_SUCCESS) goto error_status;
}
else if (FrequencyKHz <= 205500) // VHF Track: 3
{
if(FC0013_Read(pTuner, 0x1D, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x1D, (read_byte & 0xE3) | 0x0C) != FC0013_I2C_SUCCESS) goto error_status;
}
else if (FrequencyKHz <= 212500) // VHF Track: 2
{
if(FC0013_Read(pTuner, 0x1D, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x1D, (read_byte & 0xE3) | 0x08) != FC0013_I2C_SUCCESS) goto error_status;
}
else if (FrequencyKHz <= 219500) // VHF Track: 2
{
if(FC0013_Read(pTuner, 0x1D, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x1D, (read_byte & 0xE3) | 0x08) != FC0013_I2C_SUCCESS) goto error_status;
}
else if (FrequencyKHz <= 226500) // VHF Track: 1
{
if(FC0013_Read(pTuner, 0x1D, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x1D, (read_byte & 0xE3) | 0x04) != FC0013_I2C_SUCCESS) goto error_status;
}
else // VHF Track: 1
{
if(FC0013_Read(pTuner, 0x1D, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x1D, (read_byte & 0xE3) | 0x04) != FC0013_I2C_SUCCESS) goto error_status;
}
//------------------------------------------------ arios modify 2010-12-24
// " | 0x10" ==> " | 0x30" (make sure reg[0x07] bit5 = 1)
// Enable VHF filter.
if(FC0013_Read(pTuner, 0x07, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x07, read_byte | 0x10) != FC0013_I2C_SUCCESS) goto error_status;
// Disable UHF & GPS.
if(FC0013_Read(pTuner, 0x14, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x14, read_byte & 0x1F) != FC0013_I2C_SUCCESS) goto error_status;
return FC0013_FUNCTION_SUCCESS;
error_status:
return FC0013_FUNCTION_ERROR;
}
// FC0013 Open Function, includes enable/reset pin control and registers initialization.
//void FC0013_Open()
rework towards a library interface
2012-03-27 19:49:44 +02:00
int FC0013_Open(void *pTuner)
initial commit Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-03-12 00:30:54 +01:00
{
// Enable FC0013 Power
// (...)
// FC0013 Enable = High
// (...)
// FC0013 Reset = High -> Low
// (...)
add tuner initialization, fix fc0013 replug bug Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-04-01 00:38:40 +02:00
/* FIXME added to fix replug-bug with rtl-sdr */
if(FC0013_Write(pTuner, 0x0C, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
initial commit Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-03-12 00:30:54 +01:00
//================================ update base on new FC0013 register bank
if(FC0013_Write(pTuner, 0x01, 0x09) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x02, 0x16) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x03, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x04, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x05, 0x17) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x06, 0x02) != FC0013_I2C_SUCCESS) goto error_status;
// if(FC0013_Write(pTuner, 0x07, 0x27) != FC0013_I2C_SUCCESS) goto error_status; // 28.8MHz, GainShift: 15
if(FC0013_Write(pTuner, 0x07, 0x2A) != FC0013_I2C_SUCCESS) goto error_status; // 28.8MHz, modified by Realtek
if(FC0013_Write(pTuner, 0x08, 0xFF) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x09, 0x6F) != FC0013_I2C_SUCCESS) goto error_status; // Enable Loop Through
if(FC0013_Write(pTuner, 0x0A, 0xB8) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x0B, 0x82) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x0C, 0xFE) != FC0013_I2C_SUCCESS) goto error_status; // Modified for up-dowm AGC by Realtek(for master, and for 2836BU dongle).
// if(FC0013_Write(pTuner, 0x0C, 0xFC) != FC0013_I2C_SUCCESS) goto error_status; // Modified for up-dowm AGC by Realtek(for slave, and for 2832 mini dongle).
// if(FC0013_Write(pTuner, 0x0D, 0x09) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x0D, 0x01) != FC0013_I2C_SUCCESS) goto error_status; // Modified for AGC non-forcing by Realtek.
if(FC0013_Write(pTuner, 0x0E, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x0F, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x10, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x11, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x12, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x13, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x14, 0x50) != FC0013_I2C_SUCCESS) goto error_status; // DVB-T, High Gain
// if(FC0013_Write(pTuner, 0x14, 0x48) != FC0013_I2C_SUCCESS) goto error_status; // DVB-T, Middle Gain
// if(FC0013_Write(pTuner, 0x14, 0x40) != FC0013_I2C_SUCCESS) goto error_status; // DVB-T, Low Gain
if(FC0013_Write(pTuner, 0x15, 0x01) != FC0013_I2C_SUCCESS) goto error_status;
return FC0013_FUNCTION_SUCCESS;
error_status:
return FC0013_FUNCTION_ERROR;
}
rework towards a library interface
2012-03-27 19:49:44 +02:00
int FC0013_SetFrequency(void *pTuner, unsigned long Frequency, unsigned short Bandwidth)
initial commit Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-03-12 00:30:54 +01:00
{
// bool VCO1 = false;
// unsigned int doubleVCO;
// unsigned short xin, xdiv;
// unsigned char reg[21], am, pm, multi;
int VCO1 = FC0013_FALSE;
unsigned long doubleVCO;
unsigned short xin, xdiv;
unsigned char reg[21], am, pm, multi;
unsigned char read_byte;
unsigned long CrystalFreqKhz;
introduce api to configure crystal oscillator frequency Usually both, the RTL and the tuner ICs use the same clock. Changing the clock may make sense if you are applying an external clock to the tuner or to compensate the frequency (and samplerate) error caused by the original cheap crystal. This commit covers all tuner drivers except of the Fitipower FC2580
2012-04-25 22:32:51 +02:00
int CrystalFreqHz = rtlsdr_get_tuner_clock(pTuner);
initial commit Signed-off-by: Steve Markgraf <steve@steve-m.de>
2012-03-12 00:30:54 +01:00
// Get tuner crystal frequency in KHz.
// Note: CrystalFreqKhz = round(CrystalFreqHz / 1000)
CrystalFreqKhz = (CrystalFreqHz + 500) / 1000;
// modified 2011-02-09: for D-Book test
// set VHF_Track = 7
if(FC0013_Read(pTuner, 0x1D, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
// VHF Track: 7
if(FC0013_Write(pTuner, 0x1D, (read_byte & 0xE3) | 0x1C) != FC0013_I2C_SUCCESS) goto error_status;
if( Frequency < 300000 )
{
// Set VHF Track.
if(FC0013_SetVhfTrack(pTuner, Frequency) != FC0013_I2C_SUCCESS) goto error_status;
// Enable VHF filter.
if(FC0013_Read(pTuner, 0x07, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x07, read_byte | 0x10) != FC0013_I2C_SUCCESS) goto error_status;
// Disable UHF & disable GPS.
if(FC0013_Read(pTuner, 0x14, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x14, read_byte & 0x1F) != FC0013_I2C_SUCCESS) goto error_status;
}
else if ( (Frequency >= 300000) && (Frequency <= 862000) )
{
// Disable VHF filter.
if(FC0013_Read(pTuner, 0x07, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x07, read_byte & 0xEF) != FC0013_I2C_SUCCESS) goto error_status;
// enable UHF & disable GPS.
if(FC0013_Read(pTuner, 0x14, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x14, (read_byte & 0x1F) | 0x40) != FC0013_I2C_SUCCESS) goto error_status;
}
else if (Frequency > 862000)
{
// Disable VHF filter
if(FC0013_Read(pTuner, 0x07, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x07, read_byte & 0xEF) != FC0013_I2C_SUCCESS) goto error_status;
// Disable UHF & enable GPS
if(FC0013_Read(pTuner, 0x14, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x14, (read_byte & 0x1F) | 0x20) != FC0013_I2C_SUCCESS) goto error_status;
}
if (Frequency * 96 < 3560000)
{
multi = 96;
reg[5] = 0x82;
reg[6] = 0x00;
}
else if (Frequency * 64 < 3560000)
{
multi = 64;
reg[5] = 0x02;
reg[6] = 0x02;
}
else if (Frequency * 48 < 3560000)
{
multi = 48;
reg[5] = 0x42;
reg[6] = 0x00;
}
else if (Frequency * 32 < 3560000)
{
multi = 32;
reg[5] = 0x82;
reg[6] = 0x02;
}
else if (Frequency * 24 < 3560000)
{
multi = 24;
reg[5] = 0x22;
reg[6] = 0x00;
}
else if (Frequency * 16 < 3560000)
{
multi = 16;
reg[5] = 0x42;
reg[6] = 0x02;
}
else if (Frequency * 12 < 3560000)
{
multi = 12;
reg[5] = 0x12;
reg[6] = 0x00;
}
else if (Frequency * 8 < 3560000)
{
multi = 8;
reg[5] = 0x22;
reg[6] = 0x02;
}
else if (Frequency * 6 < 3560000)
{
multi = 6;
reg[5] = 0x0A;
reg[6] = 0x00;
}
else if (Frequency * 4 < 3800000)
{
multi = 4;
reg[5] = 0x12;
reg[6] = 0x02;
}
else
{
Frequency = Frequency / 2;
multi = 4;
reg[5] = 0x0A;
reg[6] = 0x02;
}
doubleVCO = Frequency * multi;
reg[6] = reg[6] | 0x08;
// VCO1 = true;
VCO1 = FC0013_TRUE;
// Calculate VCO parameters: ap & pm & xin.
// xdiv = (unsigned short)(doubleVCO / (Crystal_Frequency/2));
xdiv = (unsigned short)(doubleVCO / (CrystalFreqKhz/2));
// if( (doubleVCO - xdiv * (Crystal_Frequency/2)) >= (Crystal_Frequency/4) )
if( (doubleVCO - xdiv * (CrystalFreqKhz/2)) >= (CrystalFreqKhz/4) )
{
xdiv = xdiv + 1;
}
pm = (unsigned char)( xdiv / 8 );
am = (unsigned char)( xdiv - (8 * pm));
if (am < 2)
{
reg[1] = am + 8;
reg[2] = pm - 1;
}
else
{
reg[1] = am;
reg[2] = pm;
}
// xin = (unsigned short)(doubleVCO - ((unsigned short)(doubleVCO / (Crystal_Frequency/2))) * (Crystal_Frequency/2));
xin = (unsigned short)(doubleVCO - ((unsigned short)(doubleVCO / (CrystalFreqKhz/2))) * (CrystalFreqKhz/2));
// xin = ((xin << 15)/(Crystal_Frequency/2));
xin = (unsigned short)((xin << 15)/(CrystalFreqKhz/2));
// if( xin >= (unsigned short) pow( (double)2, (double)14) )
// {
// xin = xin + (unsigned short) pow( (double)2, (double)15);
// }
if( xin >= (unsigned short) 16384 )
xin = xin + (unsigned short) 32768;
reg[3] = (unsigned char)(xin >> 8);
reg[4] = (unsigned char)(xin & 0x00FF);
//===================================== Only for testing
// printf("Frequency: %d, Fa: %d, Fp: %d, Xin:%d \n", Frequency, am, pm, xin);
// Set Low-Pass Filter Bandwidth.
switch(Bandwidth)
{
case 6:
reg[6] = 0x80 | reg[6];
break;
case 7:
reg[6] = ~0x80 & reg[6];
reg[6] = 0x40 | reg[6];
break;
case 8:
default:
reg[6] = ~0xC0 & reg[6];
break;
}
reg[5] = reg[5] | 0x07;
if(FC0013_Write(pTuner, 0x01, reg[1]) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x02, reg[2]) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x03, reg[3]) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x04, reg[4]) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x05, reg[5]) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x06, reg[6]) != FC0013_I2C_SUCCESS) goto error_status;
if (multi == 64)
{
// FC0013_Write(0x11, FC0013_Read(0x11) | 0x04);
if(FC0013_Read(pTuner, 0x11, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x11, read_byte | 0x04) != FC0013_I2C_SUCCESS) goto error_status;
}
else
{
// FC0013_Write(0x11, FC0013_Read(0x11) & 0xFB);
if(FC0013_Read(pTuner, 0x11, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x11, read_byte & 0xFB) != FC0013_I2C_SUCCESS) goto error_status;
}
if(FC0013_Write(pTuner, 0x0E, 0x80) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x0E, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x0E, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
// reg[14] = 0x3F & FC0013_Read(0x0E);
if(FC0013_Read(pTuner, 0x0E, &read_byte) != FC0013_I2C_SUCCESS) goto error_status;
reg[14] = 0x3F & read_byte;
if (VCO1)
{
if (reg[14] > 0x3C)
{
reg[6] = ~0x08 & reg[6];
if(FC0013_Write(pTuner, 0x06, reg[6]) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x0E, 0x80) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x0E, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
}
}
else
{
if (reg[14] < 0x02)
{
reg[6] = 0x08 | reg[6];
if(FC0013_Write(pTuner, 0x06, reg[6]) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x0E, 0x80) != FC0013_I2C_SUCCESS) goto error_status;
if(FC0013_Write(pTuner, 0x0E, 0x00) != FC0013_I2C_SUCCESS) goto error_status;
}
}
return 1;
error_status:
return 0;
}
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