X-Git-Url: https://git.rvb.name/rtl-433.git/blobdiff_plain/7771049ddd733b759484442a3b10ade8faea75ff..337eb4ba945097205fbb6a3ca7912fb0697092d1:/src/tuner_fc0013.c diff --git a/src/tuner_fc0013.c b/src/tuner_fc0013.c deleted file mode 100644 index 78b696e..0000000 --- a/src/tuner_fc0013.c +++ /dev/null @@ -1,500 +0,0 @@ -/* - * Fitipower FC0013 tuner driver - * - * Copyright (C) 2012 Hans-Frieder Vogt - * partially based on driver code from Fitipower - * Copyright (C) 2010 Fitipower Integrated Technology Inc - * - * modified for use in librtlsdr - * Copyright (C) 2012 Steve Markgraf - * - * 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., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include -#include - -#include "rtlsdr_i2c.h" -#include "tuner_fc0013.h" - -static int fc0013_writereg(void *dev, uint8_t reg, uint8_t val) -{ - uint8_t data[2]; - data[0] = reg; - data[1] = val; - - if (rtlsdr_i2c_write_fn(dev, FC0013_I2C_ADDR, data, 2) < 0) - return -1; - - return 0; -} - -static int fc0013_readreg(void *dev, uint8_t reg, uint8_t *val) -{ - uint8_t data = reg; - - if (rtlsdr_i2c_write_fn(dev, FC0013_I2C_ADDR, &data, 1) < 0) - return -1; - - if (rtlsdr_i2c_read_fn(dev, FC0013_I2C_ADDR, &data, 1) < 0) - return -1; - - *val = data; - - return 0; -} - -int fc0013_init(void *dev) -{ - int ret = 0; - unsigned int i; - uint8_t reg[] = { - 0x00, /* reg. 0x00: dummy */ - 0x09, /* reg. 0x01 */ - 0x16, /* reg. 0x02 */ - 0x00, /* reg. 0x03 */ - 0x00, /* reg. 0x04 */ - 0x17, /* reg. 0x05 */ - 0x02, /* reg. 0x06: LPF bandwidth */ - 0x0a, /* reg. 0x07: CHECK */ - 0xff, /* reg. 0x08: AGC Clock divide by 256, AGC gain 1/256, - Loop Bw 1/8 */ - 0x6e, /* reg. 0x09: Disable LoopThrough, Enable LoopThrough: 0x6f */ - 0xb8, /* reg. 0x0a: Disable LO Test Buffer */ - 0x82, /* reg. 0x0b: CHECK */ - 0xfc, /* reg. 0x0c: depending on AGC Up-Down mode, may need 0xf8 */ - 0x01, /* reg. 0x0d: AGC Not Forcing & LNA Forcing, may need 0x02 */ - 0x00, /* reg. 0x0e */ - 0x00, /* reg. 0x0f */ - 0x00, /* reg. 0x10 */ - 0x00, /* reg. 0x11 */ - 0x00, /* reg. 0x12 */ - 0x00, /* reg. 0x13 */ - 0x50, /* reg. 0x14: DVB-t High Gain, UHF. - Middle Gain: 0x48, Low Gain: 0x40 */ - 0x01, /* reg. 0x15 */ - }; -#if 0 - switch (rtlsdr_get_tuner_clock(dev)) { - case FC_XTAL_27_MHZ: - case FC_XTAL_28_8_MHZ: - reg[0x07] |= 0x20; - break; - case FC_XTAL_36_MHZ: - default: - break; - } -#endif - reg[0x07] |= 0x20; - -// if (dev->dual_master) - reg[0x0c] |= 0x02; - - for (i = 1; i < sizeof(reg); i++) { - ret = fc0013_writereg(dev, i, reg[i]); - if (ret < 0) - break; - } - - return ret; -} - -int fc0013_rc_cal_add(void *dev, int rc_val) -{ - int ret; - uint8_t rc_cal; - int val; - - /* push rc_cal value, get rc_cal value */ - ret = fc0013_writereg(dev, 0x10, 0x00); - if (ret) - goto error_out; - - /* get rc_cal value */ - ret = fc0013_readreg(dev, 0x10, &rc_cal); - if (ret) - goto error_out; - - rc_cal &= 0x0f; - - val = (int)rc_cal + rc_val; - - /* forcing rc_cal */ - ret = fc0013_writereg(dev, 0x0d, 0x11); - if (ret) - goto error_out; - - /* modify rc_cal value */ - if (val > 15) - ret = fc0013_writereg(dev, 0x10, 0x0f); - else if (val < 0) - ret = fc0013_writereg(dev, 0x10, 0x00); - else - ret = fc0013_writereg(dev, 0x10, (uint8_t)val); - -error_out: - return ret; -} - -int fc0013_rc_cal_reset(void *dev) -{ - int ret; - - ret = fc0013_writereg(dev, 0x0d, 0x01); - if (!ret) - ret = fc0013_writereg(dev, 0x10, 0x00); - - return ret; -} - -static int fc0013_set_vhf_track(void *dev, uint32_t freq) -{ - int ret; - uint8_t tmp; - - ret = fc0013_readreg(dev, 0x1d, &tmp); - if (ret) - goto error_out; - tmp &= 0xe3; - if (freq <= 177500000) { /* VHF Track: 7 */ - ret = fc0013_writereg(dev, 0x1d, tmp | 0x1c); - } else if (freq <= 184500000) { /* VHF Track: 6 */ - ret = fc0013_writereg(dev, 0x1d, tmp | 0x18); - } else if (freq <= 191500000) { /* VHF Track: 5 */ - ret = fc0013_writereg(dev, 0x1d, tmp | 0x14); - } else if (freq <= 198500000) { /* VHF Track: 4 */ - ret = fc0013_writereg(dev, 0x1d, tmp | 0x10); - } else if (freq <= 205500000) { /* VHF Track: 3 */ - ret = fc0013_writereg(dev, 0x1d, tmp | 0x0c); - } else if (freq <= 219500000) { /* VHF Track: 2 */ - ret = fc0013_writereg(dev, 0x1d, tmp | 0x08); - } else if (freq < 300000000) { /* VHF Track: 1 */ - ret = fc0013_writereg(dev, 0x1d, tmp | 0x04); - } else { /* UHF and GPS */ - ret = fc0013_writereg(dev, 0x1d, tmp | 0x1c); - } - -error_out: - return ret; -} - -int fc0013_set_params(void *dev, uint32_t freq, uint32_t bandwidth) -{ - int i, ret = 0; - uint8_t reg[7], am, pm, multi, tmp; - uint64_t f_vco; - uint32_t xtal_freq_div_2; - uint16_t xin, xdiv; - int vco_select = 0; - - xtal_freq_div_2 = rtlsdr_get_tuner_clock(dev) / 2; - - /* set VHF track */ - ret = fc0013_set_vhf_track(dev, freq); - if (ret) - goto exit; - - if (freq < 300000000) { - /* enable VHF filter */ - ret = fc0013_readreg(dev, 0x07, &tmp); - if (ret) - goto exit; - ret = fc0013_writereg(dev, 0x07, tmp | 0x10); - if (ret) - goto exit; - - /* disable UHF & disable GPS */ - ret = fc0013_readreg(dev, 0x14, &tmp); - if (ret) - goto exit; - ret = fc0013_writereg(dev, 0x14, tmp & 0x1f); - if (ret) - goto exit; - } else if (freq <= 862000000) { - /* disable VHF filter */ - ret = fc0013_readreg(dev, 0x07, &tmp); - if (ret) - goto exit; - ret = fc0013_writereg(dev, 0x07, tmp & 0xef); - if (ret) - goto exit; - - /* enable UHF & disable GPS */ - ret = fc0013_readreg(dev, 0x14, &tmp); - if (ret) - goto exit; - ret = fc0013_writereg(dev, 0x14, (tmp & 0x1f) | 0x40); - if (ret) - goto exit; - } else { - /* disable VHF filter */ - ret = fc0013_readreg(dev, 0x07, &tmp); - if (ret) - goto exit; - ret = fc0013_writereg(dev, 0x07, tmp & 0xef); - if (ret) - goto exit; - - /* disable UHF & enable GPS */ - ret = fc0013_readreg(dev, 0x14, &tmp); - if (ret) - goto exit; - ret = fc0013_writereg(dev, 0x14, (tmp & 0x1f) | 0x20); - if (ret) - goto exit; - } - - /* select frequency divider and the frequency of VCO */ - if (freq < 37084000) { /* freq * 96 < 3560000000 */ - multi = 96; - reg[5] = 0x82; - reg[6] = 0x00; - } else if (freq < 55625000) { /* freq * 64 < 3560000000 */ - multi = 64; - reg[5] = 0x02; - reg[6] = 0x02; - } else if (freq < 74167000) { /* freq * 48 < 3560000000 */ - multi = 48; - reg[5] = 0x42; - reg[6] = 0x00; - } else if (freq < 111250000) { /* freq * 32 < 3560000000 */ - multi = 32; - reg[5] = 0x82; - reg[6] = 0x02; - } else if (freq < 148334000) { /* freq * 24 < 3560000000 */ - multi = 24; - reg[5] = 0x22; - reg[6] = 0x00; - } else if (freq < 222500000) { /* freq * 16 < 3560000000 */ - multi = 16; - reg[5] = 0x42; - reg[6] = 0x02; - } else if (freq < 296667000) { /* freq * 12 < 3560000000 */ - multi = 12; - reg[5] = 0x12; - reg[6] = 0x00; - } else if (freq < 445000000) { /* freq * 8 < 3560000000 */ - multi = 8; - reg[5] = 0x22; - reg[6] = 0x02; - } else if (freq < 593334000) { /* freq * 6 < 3560000000 */ - multi = 6; - reg[5] = 0x0a; - reg[6] = 0x00; - } else if (freq < 950000000) { /* freq * 4 < 3800000000 */ - multi = 4; - reg[5] = 0x12; - reg[6] = 0x02; - } else { - multi = 2; - reg[5] = 0x0a; - reg[6] = 0x02; - } - - f_vco = freq * multi; - - if (f_vco >= 3060000000U) { - reg[6] |= 0x08; - vco_select = 1; - } - - /* From divided value (XDIV) determined the FA and FP value */ - xdiv = (uint16_t)(f_vco / xtal_freq_div_2); - if ((f_vco - xdiv * xtal_freq_div_2) >= (xtal_freq_div_2 / 2)) - xdiv++; - - pm = (uint8_t)(xdiv / 8); - am = (uint8_t)(xdiv - (8 * pm)); - - if (am < 2) { - am += 8; - pm--; - } - - if (pm > 31) { - reg[1] = am + (8 * (pm - 31)); - reg[2] = 31; - } else { - reg[1] = am; - reg[2] = pm; - } - - if ((reg[1] > 15) || (reg[2] < 0x0b)) { - fprintf(stderr, "[FC0013] no valid PLL combination " - "found for %u Hz!\n", freq); - return -1; - } - - /* fix clock out */ - reg[6] |= 0x20; - - /* From VCO frequency determines the XIN ( fractional part of Delta - Sigma PLL) and divided value (XDIV) */ - xin = (uint16_t)((f_vco - (f_vco / xtal_freq_div_2) * xtal_freq_div_2) / 1000); - xin = (xin << 15) / (xtal_freq_div_2 / 1000); - if (xin >= 16384) - xin += 32768; - - reg[3] = xin >> 8; - reg[4] = xin & 0xff; - - reg[6] &= 0x3f; /* bits 6 and 7 describe the bandwidth */ - switch (bandwidth) { - case 6000000: - reg[6] |= 0x80; - break; - case 7000000: - reg[6] |= 0x40; - break; - case 8000000: - default: - break; - } - - /* modified for Realtek demod */ - reg[5] |= 0x07; - - for (i = 1; i <= 6; i++) { - ret = fc0013_writereg(dev, i, reg[i]); - if (ret) - goto exit; - } - - ret = fc0013_readreg(dev, 0x11, &tmp); - if (ret) - goto exit; - if (multi == 64) - ret = fc0013_writereg(dev, 0x11, tmp | 0x04); - else - ret = fc0013_writereg(dev, 0x11, tmp & 0xfb); - if (ret) - goto exit; - - /* VCO Calibration */ - ret = fc0013_writereg(dev, 0x0e, 0x80); - if (!ret) - ret = fc0013_writereg(dev, 0x0e, 0x00); - - /* VCO Re-Calibration if needed */ - if (!ret) - ret = fc0013_writereg(dev, 0x0e, 0x00); - - if (!ret) { -// msleep(10); - ret = fc0013_readreg(dev, 0x0e, &tmp); - } - if (ret) - goto exit; - - /* vco selection */ - tmp &= 0x3f; - - if (vco_select) { - if (tmp > 0x3c) { - reg[6] &= ~0x08; - ret = fc0013_writereg(dev, 0x06, reg[6]); - if (!ret) - ret = fc0013_writereg(dev, 0x0e, 0x80); - if (!ret) - ret = fc0013_writereg(dev, 0x0e, 0x00); - } - } else { - if (tmp < 0x02) { - reg[6] |= 0x08; - ret = fc0013_writereg(dev, 0x06, reg[6]); - if (!ret) - ret = fc0013_writereg(dev, 0x0e, 0x80); - if (!ret) - ret = fc0013_writereg(dev, 0x0e, 0x00); - } - } - -exit: - return ret; -} - -int fc0013_set_gain_mode(void *dev, int manual) -{ - int ret = 0; - uint8_t tmp = 0; - - ret |= fc0013_readreg(dev, 0x0d, &tmp); - - if (manual) - tmp |= (1 << 3); - else - tmp &= ~(1 << 3); - - ret |= fc0013_writereg(dev, 0x0d, tmp); - - /* set a fixed IF-gain for now */ - ret |= fc0013_writereg(dev, 0x13, 0x0a); - - return ret; -} - -int fc0013_lna_gains[] ={ - -99, 0x02, - -73, 0x03, - -65, 0x05, - -63, 0x04, - -63, 0x00, - -60, 0x07, - -58, 0x01, - -54, 0x06, - 58, 0x0f, - 61, 0x0e, - 63, 0x0d, - 65, 0x0c, - 67, 0x0b, - 68, 0x0a, - 70, 0x09, - 71, 0x08, - 179, 0x17, - 181, 0x16, - 182, 0x15, - 184, 0x14, - 186, 0x13, - 188, 0x12, - 191, 0x11, - 197, 0x10 -}; - -#define GAIN_CNT (sizeof(fc0013_lna_gains) / sizeof(int) / 2) - -int fc0013_set_lna_gain(void *dev, int gain) -{ - int ret = 0; - unsigned int i; - uint8_t tmp = 0; - - ret |= fc0013_readreg(dev, 0x14, &tmp); - - /* mask bits off */ - tmp &= 0xe0; - - for (i = 0; i < GAIN_CNT; i++) { - if ((fc0013_lna_gains[i*2] >= gain) || (i+1 == GAIN_CNT)) { - tmp |= fc0013_lna_gains[i*2 + 1]; - break; - } - } - - /* set gain */ - ret |= fc0013_writereg(dev, 0x14, tmp); - - return ret; -}