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Diffstat (limited to 'Radio/HW/RtlSdr/r820/src/librtlsdr.c')
-rw-r--r--Radio/HW/RtlSdr/r820/src/librtlsdr.c2023
1 files changed, 2023 insertions, 0 deletions
diff --git a/Radio/HW/RtlSdr/r820/src/librtlsdr.c b/Radio/HW/RtlSdr/r820/src/librtlsdr.c
new file mode 100644
index 0000000..2deb38c
--- /dev/null
+++ b/Radio/HW/RtlSdr/r820/src/librtlsdr.c
@@ -0,0 +1,2023 @@
+/*
+ * rtl-sdr, turns your Realtek RTL2832 based DVB dongle into a SDR receiver
+ * Copyright (C) 2012-2014 by Steve Markgraf <steve@steve-m.de>
+ * Copyright (C) 2012 by Dimitri Stolnikov <horiz0n@gmx.net>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifndef _WIN32
+#include <unistd.h>
+#define min(a, b) (((a) < (b)) ? (a) : (b))
+#endif
+
+#include "libusb.h"
+
+/*
+ * All libusb callback functions should be marked with the LIBUSB_CALL macro
+ * to ensure that they are compiled with the same calling convention as libusb.
+ *
+ * If the macro isn't available in older libusb versions, we simply define it.
+ */
+#ifndef LIBUSB_CALL
+#define LIBUSB_CALL
+#endif
+
+/* two raised to the power of n */
+#define TWO_POW(n) ((double)(1ULL<<(n)))
+
+#include "rtl-sdr.h"
+#include "tuner_e4k.h"
+#include "tuner_fc0012.h"
+#include "tuner_fc0013.h"
+#include "tuner_fc2580.h"
+#include "tuner_r82xx.h"
+
+typedef struct rtlsdr_tuner_iface {
+ /* tuner interface */
+ int (*init)(void *);
+ int (*exit)(void *);
+ int (*set_freq)(void *, uint32_t freq /* Hz */);
+ int (*set_bw)(void *, int bw /* Hz */);
+ int (*set_gain)(void *, int gain /* tenth dB */);
+ int (*set_if_gain)(void *, int stage, int gain /* tenth dB */);
+ int (*set_gain_mode)(void *, int manual);
+} rtlsdr_tuner_iface_t;
+
+enum rtlsdr_async_status {
+ RTLSDR_INACTIVE = 0,
+ RTLSDR_CANCELING,
+ RTLSDR_RUNNING
+};
+
+#define FIR_LEN 16
+
+/*
+ * FIR coefficients.
+ *
+ * The filter is running at XTal frequency. It is symmetric filter with 32
+ * coefficients. Only first 16 coefficients are specified, the other 16
+ * use the same values but in reversed order. The first coefficient in
+ * the array is the outer one, the last, the last is the inner one.
+ * First 8 coefficients are 8 bit signed integers, the next 8 coefficients
+ * are 12 bit signed integers. All coefficients have the same weight.
+ *
+ * Default FIR coefficients used for DAB/FM by the Windows driver,
+ * the DVB driver uses different ones
+ */
+static const int fir_default[FIR_LEN] = {
+ -54, -36, -41, -40, -32, -14, 14, 53, /* 8 bit signed */
+ 101, 156, 215, 273, 327, 372, 404, 421 /* 12 bit signed */
+};
+
+struct rtlsdr_dev {
+ libusb_context *ctx;
+ struct libusb_device_handle *devh;
+ uint32_t xfer_buf_num;
+ uint32_t xfer_buf_len;
+ struct libusb_transfer **xfer;
+ unsigned char **xfer_buf;
+ rtlsdr_read_async_cb_t cb;
+ void *cb_ctx;
+ enum rtlsdr_async_status async_status;
+ int async_cancel;
+ int use_zerocopy;
+ /* rtl demod context */
+ uint32_t rate; /* Hz */
+ uint32_t rtl_xtal; /* Hz */
+ int fir[FIR_LEN];
+ int direct_sampling;
+ /* tuner context */
+ enum rtlsdr_tuner tuner_type;
+ rtlsdr_tuner_iface_t *tuner;
+ uint32_t tun_xtal; /* Hz */
+ uint32_t freq; /* Hz */
+ uint32_t bw;
+ uint32_t offs_freq; /* Hz */
+ int corr; /* ppm */
+ int gain; /* tenth dB */
+ struct e4k_state e4k_s;
+ struct r82xx_config r82xx_c;
+ struct r82xx_priv r82xx_p;
+ /* status */
+ int dev_lost;
+ int driver_active;
+ unsigned int xfer_errors;
+};
+
+void rtlsdr_set_gpio_bit(rtlsdr_dev_t *dev, uint8_t gpio, int val);
+static int rtlsdr_set_if_freq(rtlsdr_dev_t *dev, uint32_t freq);
+
+/* generic tuner interface functions, shall be moved to the tuner implementations */
+int e4000_init(void *dev) {
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+ devt->e4k_s.i2c_addr = E4K_I2C_ADDR;
+ rtlsdr_get_xtal_freq(devt, NULL, &devt->e4k_s.vco.fosc);
+ devt->e4k_s.rtl_dev = dev;
+ return e4k_init(&devt->e4k_s);
+}
+int e4000_exit(void *dev) {
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+ return e4k_standby(&devt->e4k_s, 1);
+}
+int e4000_set_freq(void *dev, uint32_t freq) {
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+ return e4k_tune_freq(&devt->e4k_s, freq);
+}
+
+int e4000_set_bw(void *dev, int bw) {
+ int r = 0;
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+
+ r |= e4k_if_filter_bw_set(&devt->e4k_s, E4K_IF_FILTER_MIX, bw);
+ r |= e4k_if_filter_bw_set(&devt->e4k_s, E4K_IF_FILTER_RC, bw);
+ r |= e4k_if_filter_bw_set(&devt->e4k_s, E4K_IF_FILTER_CHAN, bw);
+
+ return r;
+}
+
+int e4000_set_gain(void *dev, int gain) {
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+ int mixgain = (gain > 340) ? 12 : 4;
+#if 0
+ int enhgain = (gain - 420);
+#endif
+ if(e4k_set_lna_gain(&devt->e4k_s, min(300, gain - mixgain * 10)) == -EINVAL)
+ return -1;
+ if(e4k_mixer_gain_set(&devt->e4k_s, mixgain) == -EINVAL)
+ return -1;
+#if 0 /* enhanced mixer gain seems to have no effect */
+ if(enhgain >= 0)
+ if(e4k_set_enh_gain(&devt->e4k_s, enhgain) == -EINVAL)
+ return -1;
+#endif
+ return 0;
+}
+int e4000_set_if_gain(void *dev, int stage, int gain) {
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+ return e4k_if_gain_set(&devt->e4k_s, (uint8_t)stage, (int8_t)(gain / 10));
+}
+int e4000_set_gain_mode(void *dev, int manual) {
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+ return e4k_enable_manual_gain(&devt->e4k_s, manual);
+}
+
+int _fc0012_init(void *dev) { return fc0012_init(dev); }
+int fc0012_exit(void *dev) { return 0; }
+int fc0012_set_freq(void *dev, uint32_t freq) {
+ /* select V-band/U-band filter */
+ rtlsdr_set_gpio_bit(dev, 6, (freq > 300000000) ? 1 : 0);
+ return fc0012_set_params(dev, freq, 6000000);
+}
+int fc0012_set_bw(void *dev, int bw) { return 0; }
+int _fc0012_set_gain(void *dev, int gain) { return fc0012_set_gain(dev, gain); }
+int fc0012_set_gain_mode(void *dev, int manual) { return 0; }
+
+int _fc0013_init(void *dev) { return fc0013_init(dev); }
+int fc0013_exit(void *dev) { return 0; }
+int fc0013_set_freq(void *dev, uint32_t freq) {
+ return fc0013_set_params(dev, freq, 6000000);
+}
+int fc0013_set_bw(void *dev, int bw) { return 0; }
+int _fc0013_set_gain(void *dev, int gain) { return fc0013_set_lna_gain(dev, gain); }
+
+int fc2580_init(void *dev) { return fc2580_Initialize(dev); }
+int fc2580_exit(void *dev) { return 0; }
+int _fc2580_set_freq(void *dev, uint32_t freq) {
+ return fc2580_SetRfFreqHz(dev, freq);
+}
+int fc2580_set_bw(void *dev, int bw) { return fc2580_SetBandwidthMode(dev, 1); }
+int fc2580_set_gain(void *dev, int gain) { return 0; }
+int fc2580_set_gain_mode(void *dev, int manual) { return 0; }
+
+int r820t_init(void *dev) {
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+ devt->r82xx_p.rtl_dev = dev;
+
+ if (devt->tuner_type == RTLSDR_TUNER_R828D) {
+ devt->r82xx_c.i2c_addr = R828D_I2C_ADDR;
+ devt->r82xx_c.rafael_chip = CHIP_R828D;
+ } else {
+ devt->r82xx_c.i2c_addr = R820T_I2C_ADDR;
+ devt->r82xx_c.rafael_chip = CHIP_R820T;
+ }
+
+ rtlsdr_get_xtal_freq(devt, NULL, &devt->r82xx_c.xtal);
+
+ devt->r82xx_c.max_i2c_msg_len = 8;
+ devt->r82xx_c.use_predetect = 0;
+ devt->r82xx_p.cfg = &devt->r82xx_c;
+
+ return r82xx_init(&devt->r82xx_p);
+}
+int r820t_exit(void *dev) {
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+ return r82xx_standby(&devt->r82xx_p);
+}
+
+int r820t_set_freq(void *dev, uint32_t freq) {
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+ return r82xx_set_freq(&devt->r82xx_p, freq);
+}
+
+int r820t_set_bw(void *dev, int bw) {
+ int r;
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+
+ r = r82xx_set_bandwidth(&devt->r82xx_p, bw, devt->rate);
+ if(r < 0)
+ return r;
+ r = rtlsdr_set_if_freq(devt, r);
+ if (r)
+ return r;
+ return rtlsdr_set_center_freq(devt, devt->freq);
+}
+
+int r820t_set_gain(void *dev, int gain) {
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+ return r82xx_set_gain(&devt->r82xx_p, 1, gain);
+}
+int r820t_set_gain_mode(void *dev, int manual) {
+ rtlsdr_dev_t* devt = (rtlsdr_dev_t*)dev;
+ return r82xx_set_gain(&devt->r82xx_p, manual, 0);
+}
+
+/* definition order must match enum rtlsdr_tuner */
+static rtlsdr_tuner_iface_t tuners[] = {
+ {
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL /* dummy for unknown tuners */
+ },
+ {
+ e4000_init, e4000_exit,
+ e4000_set_freq, e4000_set_bw, e4000_set_gain, e4000_set_if_gain,
+ e4000_set_gain_mode
+ },
+ {
+ _fc0012_init, fc0012_exit,
+ fc0012_set_freq, fc0012_set_bw, _fc0012_set_gain, NULL,
+ fc0012_set_gain_mode
+ },
+ {
+ _fc0013_init, fc0013_exit,
+ fc0013_set_freq, fc0013_set_bw, _fc0013_set_gain, NULL,
+ fc0013_set_gain_mode
+ },
+ {
+ fc2580_init, fc2580_exit,
+ _fc2580_set_freq, fc2580_set_bw, fc2580_set_gain, NULL,
+ fc2580_set_gain_mode
+ },
+ {
+ r820t_init, r820t_exit,
+ r820t_set_freq, r820t_set_bw, r820t_set_gain, NULL,
+ r820t_set_gain_mode
+ },
+ {
+ r820t_init, r820t_exit,
+ r820t_set_freq, r820t_set_bw, r820t_set_gain, NULL,
+ r820t_set_gain_mode
+ },
+};
+
+typedef struct rtlsdr_dongle {
+ uint16_t vid;
+ uint16_t pid;
+ const char *name;
+} rtlsdr_dongle_t;
+
+/*
+ * Please add your device here and send a patch to osmocom-sdr@lists.osmocom.org
+ */
+static rtlsdr_dongle_t known_devices[] = {
+ { 0x0bda, 0x2832, "Generic RTL2832U" },
+ { 0x0bda, 0x2838, "Generic RTL2832U OEM" },
+ { 0x0413, 0x6680, "DigitalNow Quad DVB-T PCI-E card" },
+ { 0x0413, 0x6f0f, "Leadtek WinFast DTV Dongle mini D" },
+ { 0x0458, 0x707f, "Genius TVGo DVB-T03 USB dongle (Ver. B)" },
+ { 0x0ccd, 0x00a9, "Terratec Cinergy T Stick Black (rev 1)" },
+ { 0x0ccd, 0x00b3, "Terratec NOXON DAB/DAB+ USB dongle (rev 1)" },
+ { 0x0ccd, 0x00b4, "Terratec Deutschlandradio DAB Stick" },
+ { 0x0ccd, 0x00b5, "Terratec NOXON DAB Stick - Radio Energy" },
+ { 0x0ccd, 0x00b7, "Terratec Media Broadcast DAB Stick" },
+ { 0x0ccd, 0x00b8, "Terratec BR DAB Stick" },
+ { 0x0ccd, 0x00b9, "Terratec WDR DAB Stick" },
+ { 0x0ccd, 0x00c0, "Terratec MuellerVerlag DAB Stick" },
+ { 0x0ccd, 0x00c6, "Terratec Fraunhofer DAB Stick" },
+ { 0x0ccd, 0x00d3, "Terratec Cinergy T Stick RC (Rev.3)" },
+ { 0x0ccd, 0x00d7, "Terratec T Stick PLUS" },
+ { 0x0ccd, 0x00e0, "Terratec NOXON DAB/DAB+ USB dongle (rev 2)" },
+ { 0x1554, 0x5020, "PixelView PV-DT235U(RN)" },
+ { 0x15f4, 0x0131, "Astrometa DVB-T/DVB-T2" },
+ { 0x15f4, 0x0133, "HanfTek DAB+FM+DVB-T" },
+ { 0x185b, 0x0620, "Compro Videomate U620F"},
+ { 0x185b, 0x0650, "Compro Videomate U650F"},
+ { 0x185b, 0x0680, "Compro Videomate U680F"},
+ { 0x1b80, 0xd393, "GIGABYTE GT-U7300" },
+ { 0x1b80, 0xd394, "DIKOM USB-DVBT HD" },
+ { 0x1b80, 0xd395, "Peak 102569AGPK" },
+ { 0x1b80, 0xd397, "KWorld KW-UB450-T USB DVB-T Pico TV" },
+ { 0x1b80, 0xd398, "Zaapa ZT-MINDVBZP" },
+ { 0x1b80, 0xd39d, "SVEON STV20 DVB-T USB & FM" },
+ { 0x1b80, 0xd3a4, "Twintech UT-40" },
+ { 0x1b80, 0xd3a8, "ASUS U3100MINI_PLUS_V2" },
+ { 0x1b80, 0xd3af, "SVEON STV27 DVB-T USB & FM" },
+ { 0x1b80, 0xd3b0, "SVEON STV21 DVB-T USB & FM" },
+ { 0x1d19, 0x1101, "Dexatek DK DVB-T Dongle (Logilink VG0002A)" },
+ { 0x1d19, 0x1102, "Dexatek DK DVB-T Dongle (MSI DigiVox mini II V3.0)" },
+ { 0x1d19, 0x1103, "Dexatek Technology Ltd. DK 5217 DVB-T Dongle" },
+ { 0x1d19, 0x1104, "MSI DigiVox Micro HD" },
+ { 0x1f4d, 0xa803, "Sweex DVB-T USB" },
+ { 0x1f4d, 0xb803, "GTek T803" },
+ { 0x1f4d, 0xc803, "Lifeview LV5TDeluxe" },
+ { 0x1f4d, 0xd286, "MyGica TD312" },
+ { 0x1f4d, 0xd803, "PROlectrix DV107669" },
+};
+
+#define DEFAULT_BUF_NUMBER 15
+#define DEFAULT_BUF_LENGTH (16 * 32 * 512)
+
+#define DEF_RTL_XTAL_FREQ 28800000
+#define MIN_RTL_XTAL_FREQ (DEF_RTL_XTAL_FREQ - 1000)
+#define MAX_RTL_XTAL_FREQ (DEF_RTL_XTAL_FREQ + 1000)
+
+#define CTRL_IN (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN)
+#define CTRL_OUT (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT)
+#define CTRL_TIMEOUT 300
+#define BULK_TIMEOUT 0
+
+#define EEPROM_ADDR 0xa0
+
+enum usb_reg {
+ USB_SYSCTL = 0x2000,
+ USB_CTRL = 0x2010,
+ USB_STAT = 0x2014,
+ USB_EPA_CFG = 0x2144,
+ USB_EPA_CTL = 0x2148,
+ USB_EPA_MAXPKT = 0x2158,
+ USB_EPA_MAXPKT_2 = 0x215a,
+ USB_EPA_FIFO_CFG = 0x2160,
+};
+
+enum sys_reg {
+ DEMOD_CTL = 0x3000,
+ GPO = 0x3001,
+ GPI = 0x3002,
+ GPOE = 0x3003,
+ GPD = 0x3004,
+ SYSINTE = 0x3005,
+ SYSINTS = 0x3006,
+ GP_CFG0 = 0x3007,
+ GP_CFG1 = 0x3008,
+ SYSINTE_1 = 0x3009,
+ SYSINTS_1 = 0x300a,
+ DEMOD_CTL_1 = 0x300b,
+ IR_SUSPEND = 0x300c,
+};
+
+enum blocks {
+ DEMODB = 0,
+ USBB = 1,
+ SYSB = 2,
+ TUNB = 3,
+ ROMB = 4,
+ IRB = 5,
+ IICB = 6,
+};
+
+int rtlsdr_read_array(rtlsdr_dev_t *dev, uint8_t block, uint16_t addr, uint8_t *array, uint8_t len)
+{
+ int r;
+ uint16_t index = (block << 8);
+
+ r = libusb_control_transfer(dev->devh, CTRL_IN, 0, addr, index, array, len, CTRL_TIMEOUT);
+#if 0
+ if (r < 0)
+ fprintf(stderr, "%s failed with %d\n", __FUNCTION__, r);
+#endif
+ return r;
+}
+
+int rtlsdr_write_array(rtlsdr_dev_t *dev, uint8_t block, uint16_t addr, uint8_t *array, uint8_t len)
+{
+ int r;
+ uint16_t index = (block << 8) | 0x10;
+
+ r = libusb_control_transfer(dev->devh, CTRL_OUT, 0, addr, index, array, len, CTRL_TIMEOUT);
+#if 0
+ if (r < 0)
+ fprintf(stderr, "%s failed with %d\n", __FUNCTION__, r);
+#endif
+ return r;
+}
+
+int rtlsdr_i2c_write_reg(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t reg, uint8_t val)
+{
+ uint16_t addr = i2c_addr;
+ uint8_t data[2];
+
+ data[0] = reg;
+ data[1] = val;
+ return rtlsdr_write_array(dev, IICB, addr, (uint8_t *)&data, 2);
+}
+
+uint8_t rtlsdr_i2c_read_reg(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t reg)
+{
+ uint16_t addr = i2c_addr;
+ uint8_t data = 0;
+
+ rtlsdr_write_array(dev, IICB, addr, &reg, 1);
+ rtlsdr_read_array(dev, IICB, addr, &data, 1);
+
+ return data;
+}
+
+int rtlsdr_i2c_write(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t *buffer, int len)
+{
+ uint16_t addr = i2c_addr;
+
+ if (!dev)
+ return -1;
+
+ return rtlsdr_write_array(dev, IICB, addr, buffer, len);
+}
+
+int rtlsdr_i2c_read(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t *buffer, int len)
+{
+ uint16_t addr = i2c_addr;
+
+ if (!dev)
+ return -1;
+
+ return rtlsdr_read_array(dev, IICB, addr, buffer, len);
+}
+
+uint16_t rtlsdr_read_reg(rtlsdr_dev_t *dev, uint8_t block, uint16_t addr, uint8_t len)
+{
+ int r;
+ unsigned char data[2];
+ uint16_t index = (block << 8);
+ uint16_t reg;
+
+ r = libusb_control_transfer(dev->devh, CTRL_IN, 0, addr, index, data, len, CTRL_TIMEOUT);
+
+ if (r < 0)
+ fprintf(stderr, "%s failed with %d\n", __FUNCTION__, r);
+
+ reg = (data[1] << 8) | data[0];
+
+ return reg;
+}
+
+int rtlsdr_write_reg(rtlsdr_dev_t *dev, uint8_t block, uint16_t addr, uint16_t val, uint8_t len)
+{
+ int r;
+ unsigned char data[2];
+
+ uint16_t index = (block << 8) | 0x10;
+
+ if (len == 1)
+ data[0] = val & 0xff;
+ else
+ data[0] = val >> 8;
+
+ data[1] = val & 0xff;
+
+ r = libusb_control_transfer(dev->devh, CTRL_OUT, 0, addr, index, data, len, CTRL_TIMEOUT);
+
+ if (r < 0)
+ fprintf(stderr, "%s failed with %d\n", __FUNCTION__, r);
+
+ return r;
+}
+
+uint16_t rtlsdr_demod_read_reg(rtlsdr_dev_t *dev, uint8_t page, uint16_t addr, uint8_t len)
+{
+ int r;
+ unsigned char data[2];
+
+ uint16_t index = page;
+ uint16_t reg;
+ addr = (addr << 8) | 0x20;
+
+ r = libusb_control_transfer(dev->devh, CTRL_IN, 0, addr, index, data, len, CTRL_TIMEOUT);
+
+ if (r < 0)
+ fprintf(stderr, "%s failed with %d\n", __FUNCTION__, r);
+
+ reg = (data[1] << 8) | data[0];
+
+ return reg;
+}
+
+int rtlsdr_demod_write_reg(rtlsdr_dev_t *dev, uint8_t page, uint16_t addr, uint16_t val, uint8_t len)
+{
+ int r;
+ unsigned char data[2];
+ uint16_t index = 0x10 | page;
+ addr = (addr << 8) | 0x20;
+
+ if (len == 1)
+ data[0] = val & 0xff;
+ else
+ data[0] = val >> 8;
+
+ data[1] = val & 0xff;
+
+ r = libusb_control_transfer(dev->devh, CTRL_OUT, 0, addr, index, data, len, CTRL_TIMEOUT);
+
+ if (r < 0)
+ fprintf(stderr, "%s failed with %d\n", __FUNCTION__, r);
+
+ rtlsdr_demod_read_reg(dev, 0x0a, 0x01, 1);
+
+ return (r == len) ? 0 : -1;
+}
+
+void rtlsdr_set_gpio_bit(rtlsdr_dev_t *dev, uint8_t gpio, int val)
+{
+ uint16_t r;
+
+ gpio = 1 << gpio;
+ r = rtlsdr_read_reg(dev, SYSB, GPO, 1);
+ r = val ? (r | gpio) : (r & ~gpio);
+ rtlsdr_write_reg(dev, SYSB, GPO, r, 1);
+}
+
+void rtlsdr_set_gpio_output(rtlsdr_dev_t *dev, uint8_t gpio)
+{
+ int r;
+ gpio = 1 << gpio;
+
+ r = rtlsdr_read_reg(dev, SYSB, GPD, 1);
+ rtlsdr_write_reg(dev, SYSB, GPD, r & ~gpio, 1);
+ r = rtlsdr_read_reg(dev, SYSB, GPOE, 1);
+ rtlsdr_write_reg(dev, SYSB, GPOE, r | gpio, 1);
+}
+
+void rtlsdr_set_i2c_repeater(rtlsdr_dev_t *dev, int on)
+{
+ rtlsdr_demod_write_reg(dev, 1, 0x01, on ? 0x18 : 0x10, 1);
+}
+
+int rtlsdr_set_fir(rtlsdr_dev_t *dev)
+{
+ uint8_t fir[20];
+
+ int i;
+ /* format: int8_t[8] */
+ for (i = 0; i < 8; ++i) {
+ const int val = dev->fir[i];
+ if (val < -128 || val > 127) {
+ return -1;
+ }
+ fir[i] = val;
+ }
+ /* format: int12_t[8] */
+ for (i = 0; i < 8; i += 2) {
+ const int val0 = dev->fir[8+i];
+ const int val1 = dev->fir[8+i+1];
+ if (val0 < -2048 || val0 > 2047 || val1 < -2048 || val1 > 2047) {
+ return -1;
+ }
+ fir[8+i*3/2] = val0 >> 4;
+ fir[8+i*3/2+1] = (val0 << 4) | ((val1 >> 8) & 0x0f);
+ fir[8+i*3/2+2] = val1;
+ }
+
+ for (i = 0; i < (int)sizeof(fir); i++) {
+ if (rtlsdr_demod_write_reg(dev, 1, 0x1c + i, fir[i], 1))
+ return -1;
+ }
+
+ return 0;
+}
+
+void rtlsdr_init_baseband(rtlsdr_dev_t *dev)
+{
+ unsigned int i;
+
+ /* initialize USB */
+ rtlsdr_write_reg(dev, USBB, USB_SYSCTL, 0x09, 1);
+ rtlsdr_write_reg(dev, USBB, USB_EPA_MAXPKT, 0x0002, 2);
+ rtlsdr_write_reg(dev, USBB, USB_EPA_CTL, 0x1002, 2);
+
+ /* poweron demod */
+ rtlsdr_write_reg(dev, SYSB, DEMOD_CTL_1, 0x22, 1);
+ rtlsdr_write_reg(dev, SYSB, DEMOD_CTL, 0xe8, 1);
+
+ /* reset demod (bit 3, soft_rst) */
+ rtlsdr_demod_write_reg(dev, 1, 0x01, 0x14, 1);
+ rtlsdr_demod_write_reg(dev, 1, 0x01, 0x10, 1);
+
+ /* disable spectrum inversion and adjacent channel rejection */
+ rtlsdr_demod_write_reg(dev, 1, 0x15, 0x00, 1);
+ rtlsdr_demod_write_reg(dev, 1, 0x16, 0x0000, 2);
+
+ /* clear both DDC shift and IF frequency registers */
+ for (i = 0; i < 6; i++)
+ rtlsdr_demod_write_reg(dev, 1, 0x16 + i, 0x00, 1);
+
+ rtlsdr_set_fir(dev);
+
+ /* enable SDR mode, disable DAGC (bit 5) */
+ rtlsdr_demod_write_reg(dev, 0, 0x19, 0x05, 1);
+
+ /* init FSM state-holding register */
+ rtlsdr_demod_write_reg(dev, 1, 0x93, 0xf0, 1);
+ rtlsdr_demod_write_reg(dev, 1, 0x94, 0x0f, 1);
+
+ /* disable AGC (en_dagc, bit 0) (this seems to have no effect) */
+ rtlsdr_demod_write_reg(dev, 1, 0x11, 0x00, 1);
+
+ /* disable RF and IF AGC loop */
+ rtlsdr_demod_write_reg(dev, 1, 0x04, 0x00, 1);
+
+ /* disable PID filter (enable_PID = 0) */
+ rtlsdr_demod_write_reg(dev, 0, 0x61, 0x60, 1);
+
+ /* opt_adc_iq = 0, default ADC_I/ADC_Q datapath */
+ rtlsdr_demod_write_reg(dev, 0, 0x06, 0x80, 1);
+
+ /* Enable Zero-IF mode (en_bbin bit), DC cancellation (en_dc_est),
+ * IQ estimation/compensation (en_iq_comp, en_iq_est) */
+ rtlsdr_demod_write_reg(dev, 1, 0xb1, 0x1b, 1);
+
+ /* disable 4.096 MHz clock output on pin TP_CK0 */
+ rtlsdr_demod_write_reg(dev, 0, 0x0d, 0x83, 1);
+}
+
+int rtlsdr_deinit_baseband(rtlsdr_dev_t *dev)
+{
+ int r = 0;
+
+ if (!dev)
+ return -1;
+
+ if (dev->tuner && dev->tuner->exit) {
+ rtlsdr_set_i2c_repeater(dev, 1);
+ r = dev->tuner->exit(dev); /* deinitialize tuner */
+ rtlsdr_set_i2c_repeater(dev, 0);
+ }
+
+ /* poweroff demodulator and ADCs */
+ rtlsdr_write_reg(dev, SYSB, DEMOD_CTL, 0x20, 1);
+
+ return r;
+}
+
+static int rtlsdr_set_if_freq(rtlsdr_dev_t *dev, uint32_t freq)
+{
+ uint32_t rtl_xtal;
+ int32_t if_freq;
+ uint8_t tmp;
+ int r;
+
+ if (!dev)
+ return -1;
+
+ /* read corrected clock value */
+ if (rtlsdr_get_xtal_freq(dev, &rtl_xtal, NULL))
+ return -2;
+
+ if_freq = ((freq * TWO_POW(22)) / rtl_xtal) * (-1);
+
+ tmp = (if_freq >> 16) & 0x3f;
+ r = rtlsdr_demod_write_reg(dev, 1, 0x19, tmp, 1);
+ tmp = (if_freq >> 8) & 0xff;
+ r |= rtlsdr_demod_write_reg(dev, 1, 0x1a, tmp, 1);
+ tmp = if_freq & 0xff;
+ r |= rtlsdr_demod_write_reg(dev, 1, 0x1b, tmp, 1);
+
+ return r;
+}
+
+int rtlsdr_set_sample_freq_correction(rtlsdr_dev_t *dev, int ppm)
+{
+ int r = 0;
+ uint8_t tmp;
+ int16_t offs = ppm * (-1) * TWO_POW(24) / 1000000;
+
+ tmp = offs & 0xff;
+ r |= rtlsdr_demod_write_reg(dev, 1, 0x3f, tmp, 1);
+ tmp = (offs >> 8) & 0x3f;
+ r |= rtlsdr_demod_write_reg(dev, 1, 0x3e, tmp, 1);
+
+ return r;
+}
+
+int rtlsdr_set_xtal_freq(rtlsdr_dev_t *dev, uint32_t rtl_freq, uint32_t tuner_freq)
+{
+ int r = 0;
+
+ if (!dev)
+ return -1;
+
+ if (rtl_freq > 0 &&
+ (rtl_freq < MIN_RTL_XTAL_FREQ || rtl_freq > MAX_RTL_XTAL_FREQ))
+ return -2;
+
+ if (rtl_freq > 0 && dev->rtl_xtal != rtl_freq) {
+ dev->rtl_xtal = rtl_freq;
+
+ /* update xtal-dependent settings */
+ if (dev->rate)
+ r = rtlsdr_set_sample_rate(dev, dev->rate);
+ }
+
+ if (dev->tun_xtal != tuner_freq) {
+ if (0 == tuner_freq)
+ dev->tun_xtal = dev->rtl_xtal;
+ else
+ dev->tun_xtal = tuner_freq;
+
+ /* read corrected clock value into e4k and r82xx structure */
+ if (rtlsdr_get_xtal_freq(dev, NULL, &dev->e4k_s.vco.fosc) ||
+ rtlsdr_get_xtal_freq(dev, NULL, &dev->r82xx_c.xtal))
+ return -3;
+
+ /* update xtal-dependent settings */
+ if (dev->freq)
+ r = rtlsdr_set_center_freq(dev, dev->freq);
+ }
+
+ return r;
+}
+
+int rtlsdr_get_xtal_freq(rtlsdr_dev_t *dev, uint32_t *rtl_freq, uint32_t *tuner_freq)
+{
+ if (!dev)
+ return -1;
+
+ #define APPLY_PPM_CORR(val,ppm) (((val) * (1.0 + (ppm) / 1e6)))
+
+ if (rtl_freq)
+ *rtl_freq = (uint32_t) APPLY_PPM_CORR(dev->rtl_xtal, dev->corr);
+
+ if (tuner_freq)
+ *tuner_freq = (uint32_t) APPLY_PPM_CORR(dev->tun_xtal, dev->corr);
+
+ return 0;
+}
+
+int rtlsdr_get_usb_strings(rtlsdr_dev_t *dev, char *manufact, char *product,
+ char *serial)
+{
+ struct libusb_device_descriptor dd;
+ libusb_device *device = NULL;
+ const int buf_max = 256;
+ int r = 0;
+
+ if (!dev || !dev->devh)
+ return -1;
+
+ device = libusb_get_device(dev->devh);
+
+ r = libusb_get_device_descriptor(device, &dd);
+ if (r < 0)
+ return -1;
+
+ if (manufact) {
+ memset(manufact, 0, buf_max);
+ libusb_get_string_descriptor_ascii(dev->devh, dd.iManufacturer,
+ (unsigned char *)manufact,
+ buf_max);
+ }
+
+ if (product) {
+ memset(product, 0, buf_max);
+ libusb_get_string_descriptor_ascii(dev->devh, dd.iProduct,
+ (unsigned char *)product,
+ buf_max);
+ }
+
+ if (serial) {
+ memset(serial, 0, buf_max);
+ libusb_get_string_descriptor_ascii(dev->devh, dd.iSerialNumber,
+ (unsigned char *)serial,
+ buf_max);
+ }
+
+ return 0;
+}
+
+int rtlsdr_write_eeprom(rtlsdr_dev_t *dev, uint8_t *data, uint8_t offset, uint16_t len)
+{
+ int r = 0;
+ int i;
+ uint8_t cmd[2];
+
+ if (!dev)
+ return -1;
+
+ if ((len + offset) > 256)
+ return -2;
+
+ for (i = 0; i < len; i++) {
+ cmd[0] = i + offset;
+ r = rtlsdr_write_array(dev, IICB, EEPROM_ADDR, cmd, 1);
+ r = rtlsdr_read_array(dev, IICB, EEPROM_ADDR, &cmd[1], 1);
+
+ /* only write the byte if it differs */
+ if (cmd[1] == data[i])
+ continue;
+
+ cmd[1] = data[i];
+ r = rtlsdr_write_array(dev, IICB, EEPROM_ADDR, cmd, 2);
+ if (r != sizeof(cmd))
+ return -3;
+
+ /* for some EEPROMs (e.g. ATC 240LC02) we need a delay
+ * between write operations, otherwise they will fail */
+#ifdef _WIN32
+ Sleep(5);
+#else
+ usleep(5000);
+#endif
+ }
+
+ return 0;
+}
+
+int rtlsdr_read_eeprom(rtlsdr_dev_t *dev, uint8_t *data, uint8_t offset, uint16_t len)
+{
+ int r = 0;
+ int i;
+
+ if (!dev)
+ return -1;
+
+ if ((len + offset) > 256)
+ return -2;
+
+ r = rtlsdr_write_array(dev, IICB, EEPROM_ADDR, &offset, 1);
+ if (r < 0)
+ return -3;
+
+ for (i = 0; i < len; i++) {
+ r = rtlsdr_read_array(dev, IICB, EEPROM_ADDR, data + i, 1);
+
+ if (r < 0)
+ return -3;
+ }
+
+ return r;
+}
+
+int rtlsdr_set_center_freq(rtlsdr_dev_t *dev, uint32_t freq)
+{
+ int r = -1;
+
+ if (!dev || !dev->tuner)
+ return -1;
+
+ if (dev->direct_sampling) {
+ r = rtlsdr_set_if_freq(dev, freq);
+ } else if (dev->tuner && dev->tuner->set_freq) {
+ rtlsdr_set_i2c_repeater(dev, 1);
+ r = dev->tuner->set_freq(dev, freq - dev->offs_freq);
+ rtlsdr_set_i2c_repeater(dev, 0);
+ }
+
+ if (!r)
+ dev->freq = freq;
+ else
+ dev->freq = 0;
+
+ return r;
+}
+
+uint32_t rtlsdr_get_center_freq(rtlsdr_dev_t *dev)
+{
+ if (!dev)
+ return 0;
+
+ return dev->freq;
+}
+
+int rtlsdr_set_freq_correction(rtlsdr_dev_t *dev, int ppm)
+{
+ int r = 0;
+
+ if (!dev)
+ return -1;
+
+ if (dev->corr == ppm)
+ return -2;
+
+ dev->corr = ppm;
+
+ r |= rtlsdr_set_sample_freq_correction(dev, ppm);
+
+ /* read corrected clock value into e4k and r82xx structure */
+ if (rtlsdr_get_xtal_freq(dev, NULL, &dev->e4k_s.vco.fosc) ||
+ rtlsdr_get_xtal_freq(dev, NULL, &dev->r82xx_c.xtal))
+ return -3;
+
+ if (dev->freq) /* retune to apply new correction value */
+ r |= rtlsdr_set_center_freq(dev, dev->freq);
+
+ return r;
+}
+
+int rtlsdr_get_freq_correction(rtlsdr_dev_t *dev)
+{
+ if (!dev)
+ return 0;
+
+ return dev->corr;
+}
+
+enum rtlsdr_tuner rtlsdr_get_tuner_type(rtlsdr_dev_t *dev)
+{
+ if (!dev)
+ return RTLSDR_TUNER_UNKNOWN;
+
+ return dev->tuner_type;
+}
+
+int rtlsdr_get_tuner_gains(rtlsdr_dev_t *dev, int *gains)
+{
+ /* all gain values are expressed in tenths of a dB */
+ const int e4k_gains[] = { -10, 15, 40, 65, 90, 115, 140, 165, 190, 215,
+ 240, 290, 340, 420 };
+ const int fc0012_gains[] = { -99, -40, 71, 179, 192 };
+ const int fc0013_gains[] = { -99, -73, -65, -63, -60, -58, -54, 58, 61,
+ 63, 65, 67, 68, 70, 71, 179, 181, 182,
+ 184, 186, 188, 191, 197 };
+ const int fc2580_gains[] = { 0 /* no gain values */ };
+ const int r82xx_gains[] = { 0, 9, 14, 27, 37, 77, 87, 125, 144, 157,
+ 166, 197, 207, 229, 254, 280, 297, 328,
+ 338, 364, 372, 386, 402, 421, 434, 439,
+ 445, 480, 496 };
+ const int unknown_gains[] = { 0 /* no gain values */ };
+
+ const int *ptr = NULL;
+ int len = 0;
+
+ if (!dev)
+ return -1;
+
+ switch (dev->tuner_type) {
+ case RTLSDR_TUNER_E4000:
+ ptr = e4k_gains; len = sizeof(e4k_gains);
+ break;
+ case RTLSDR_TUNER_FC0012:
+ ptr = fc0012_gains; len = sizeof(fc0012_gains);
+ break;
+ case RTLSDR_TUNER_FC0013:
+ ptr = fc0013_gains; len = sizeof(fc0013_gains);
+ break;
+ case RTLSDR_TUNER_FC2580:
+ ptr = fc2580_gains; len = sizeof(fc2580_gains);
+ break;
+ case RTLSDR_TUNER_R820T:
+ case RTLSDR_TUNER_R828D:
+ ptr = r82xx_gains; len = sizeof(r82xx_gains);
+ break;
+ default:
+ ptr = unknown_gains; len = sizeof(unknown_gains);
+ break;
+ }
+
+ if (!gains) { /* no buffer provided, just return the count */
+ return len / sizeof(int);
+ } else {
+ if (len)
+ memcpy(gains, ptr, len);
+
+ return len / sizeof(int);
+ }
+}
+
+int rtlsdr_set_tuner_bandwidth(rtlsdr_dev_t *dev, uint32_t bw)
+{
+ int r = 0;
+
+ if (!dev || !dev->tuner)
+ return -1;
+
+ if (dev->tuner->set_bw) {
+ rtlsdr_set_i2c_repeater(dev, 1);
+ r = dev->tuner->set_bw(dev, bw > 0 ? bw : dev->rate);
+ rtlsdr_set_i2c_repeater(dev, 0);
+ if (r)
+ return r;
+ dev->bw = bw;
+ }
+ return r;
+}
+
+int rtlsdr_set_tuner_gain(rtlsdr_dev_t *dev, int gain)
+{
+ int r = 0;
+
+ if (!dev || !dev->tuner)
+ return -1;
+
+ if (dev->tuner->set_gain) {
+ rtlsdr_set_i2c_repeater(dev, 1);
+ r = dev->tuner->set_gain((void *)dev, gain);
+ rtlsdr_set_i2c_repeater(dev, 0);
+ }
+
+ if (!r)
+ dev->gain = gain;
+ else
+ dev->gain = 0;
+
+ return r;
+}
+
+int rtlsdr_get_tuner_gain(rtlsdr_dev_t *dev)
+{
+ if (!dev)
+ return 0;
+
+ return dev->gain;
+}
+
+int rtlsdr_set_tuner_if_gain(rtlsdr_dev_t *dev, int stage, int gain)
+{
+ int r = 0;
+
+ if (!dev || !dev->tuner)
+ return -1;
+
+ if (dev->tuner->set_if_gain) {
+ rtlsdr_set_i2c_repeater(dev, 1);
+ r = dev->tuner->set_if_gain(dev, stage, gain);
+ rtlsdr_set_i2c_repeater(dev, 0);
+ }
+
+ return r;
+}
+
+int rtlsdr_set_tuner_gain_mode(rtlsdr_dev_t *dev, int mode)
+{
+ int r = 0;
+
+ if (!dev || !dev->tuner)
+ return -1;
+
+ if (dev->tuner->set_gain_mode) {
+ rtlsdr_set_i2c_repeater(dev, 1);
+ r = dev->tuner->set_gain_mode((void *)dev, mode);
+ rtlsdr_set_i2c_repeater(dev, 0);
+ }
+
+ return r;
+}
+
+int rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t samp_rate)
+{
+ int r = 0;
+ uint16_t tmp;
+ uint32_t rsamp_ratio, real_rsamp_ratio;
+ double real_rate;
+
+ if (!dev)
+ return -1;
+
+ /* check if the rate is supported by the resampler */
+ if ((samp_rate <= 225000) || (samp_rate > 3200000) ||
+ ((samp_rate > 300000) && (samp_rate <= 900000))) {
+ fprintf(stderr, "Invalid sample rate: %u Hz\n", samp_rate);
+ return -EINVAL;
+ }
+
+ rsamp_ratio = (dev->rtl_xtal * TWO_POW(22)) / samp_rate;
+ rsamp_ratio &= 0x0ffffffc;
+
+ real_rsamp_ratio = rsamp_ratio | ((rsamp_ratio & 0x08000000) << 1);
+ real_rate = (dev->rtl_xtal * TWO_POW(22)) / real_rsamp_ratio;
+
+ if ( ((double)samp_rate) != real_rate )
+ fprintf(stderr, "Exact sample rate is: %f Hz\n", real_rate);
+
+ dev->rate = (uint32_t)real_rate;
+
+ if (dev->tuner && dev->tuner->set_bw) {
+ rtlsdr_set_i2c_repeater(dev, 1);
+ dev->tuner->set_bw(dev, dev->bw > 0 ? dev->bw : dev->rate);
+ rtlsdr_set_i2c_repeater(dev, 0);
+ }
+
+ tmp = (rsamp_ratio >> 16);
+ r |= rtlsdr_demod_write_reg(dev, 1, 0x9f, tmp, 2);
+ tmp = rsamp_ratio & 0xffff;
+ r |= rtlsdr_demod_write_reg(dev, 1, 0xa1, tmp, 2);
+
+ r |= rtlsdr_set_sample_freq_correction(dev, dev->corr);
+
+ /* reset demod (bit 3, soft_rst) */
+ r |= rtlsdr_demod_write_reg(dev, 1, 0x01, 0x14, 1);
+ r |= rtlsdr_demod_write_reg(dev, 1, 0x01, 0x10, 1);
+
+ /* recalculate offset frequency if offset tuning is enabled */
+ if (dev->offs_freq)
+ rtlsdr_set_offset_tuning(dev, 1);
+
+ return r;
+}
+
+uint32_t rtlsdr_get_sample_rate(rtlsdr_dev_t *dev)
+{
+ if (!dev)
+ return 0;
+
+ return dev->rate;
+}
+
+int rtlsdr_set_testmode(rtlsdr_dev_t *dev, int on)
+{
+ if (!dev)
+ return -1;
+
+ return rtlsdr_demod_write_reg(dev, 0, 0x19, on ? 0x03 : 0x05, 1);
+}
+
+int rtlsdr_set_agc_mode(rtlsdr_dev_t *dev, int on)
+{
+ if (!dev)
+ return -1;
+
+ return rtlsdr_demod_write_reg(dev, 0, 0x19, on ? 0x25 : 0x05, 1);
+}
+
+int rtlsdr_set_direct_sampling(rtlsdr_dev_t *dev, int on)
+{
+ int r = 0;
+
+ if (!dev)
+ return -1;
+
+ if (on) {
+ if (dev->tuner && dev->tuner->exit) {
+ rtlsdr_set_i2c_repeater(dev, 1);
+ r = dev->tuner->exit(dev);
+ rtlsdr_set_i2c_repeater(dev, 0);
+ }
+
+ /* disable Zero-IF mode */
+ r |= rtlsdr_demod_write_reg(dev, 1, 0xb1, 0x1a, 1);
+
+ /* disable spectrum inversion */
+ r |= rtlsdr_demod_write_reg(dev, 1, 0x15, 0x00, 1);
+
+ /* only enable In-phase ADC input */
+ r |= rtlsdr_demod_write_reg(dev, 0, 0x08, 0x4d, 1);
+
+ /* swap I and Q ADC, this allows to select between two inputs */
+ r |= rtlsdr_demod_write_reg(dev, 0, 0x06, (on > 1) ? 0x90 : 0x80, 1);
+
+ fprintf(stderr, "Enabled direct sampling mode, input %i\n", on);
+ dev->direct_sampling = on;
+ } else {
+ if (dev->tuner && dev->tuner->init) {
+ rtlsdr_set_i2c_repeater(dev, 1);
+ r |= dev->tuner->init(dev);
+ rtlsdr_set_i2c_repeater(dev, 0);
+ }
+
+ if ((dev->tuner_type == RTLSDR_TUNER_R820T) ||
+ (dev->tuner_type == RTLSDR_TUNER_R828D)) {
+ r |= rtlsdr_set_if_freq(dev, R82XX_IF_FREQ);
+
+ /* enable spectrum inversion */
+ r |= rtlsdr_demod_write_reg(dev, 1, 0x15, 0x01, 1);
+ } else {
+ r |= rtlsdr_set_if_freq(dev, 0);
+
+ /* enable In-phase + Quadrature ADC input */
+ r |= rtlsdr_demod_write_reg(dev, 0, 0x08, 0xcd, 1);
+
+ /* Enable Zero-IF mode */
+ r |= rtlsdr_demod_write_reg(dev, 1, 0xb1, 0x1b, 1);
+ }
+
+ /* opt_adc_iq = 0, default ADC_I/ADC_Q datapath */
+ r |= rtlsdr_demod_write_reg(dev, 0, 0x06, 0x80, 1);
+
+ fprintf(stderr, "Disabled direct sampling mode\n");
+ dev->direct_sampling = 0;
+ }
+
+ r |= rtlsdr_set_center_freq(dev, dev->freq);
+
+ return r;
+}
+
+int rtlsdr_get_direct_sampling(rtlsdr_dev_t *dev)
+{
+ if (!dev)
+ return -1;
+
+ return dev->direct_sampling;
+}
+
+int rtlsdr_set_offset_tuning(rtlsdr_dev_t *dev, int on)
+{
+ int r = 0;
+ int bw;
+
+ if (!dev)
+ return -1;
+
+ if ((dev->tuner_type == RTLSDR_TUNER_R820T) ||
+ (dev->tuner_type == RTLSDR_TUNER_R828D))
+ return -2;
+
+ if (dev->direct_sampling)
+ return -3;
+
+ /* based on keenerds 1/f noise measurements */
+ dev->offs_freq = on ? ((dev->rate / 2) * 170 / 100) : 0;
+ r |= rtlsdr_set_if_freq(dev, dev->offs_freq);
+
+ if (dev->tuner && dev->tuner->set_bw) {
+ rtlsdr_set_i2c_repeater(dev, 1);
+ if (on) {
+ bw = 2 * dev->offs_freq;
+ } else if (dev->bw > 0) {
+ bw = dev->bw;
+ } else {
+ bw = dev->rate;
+ }
+ dev->tuner->set_bw(dev, bw);
+ rtlsdr_set_i2c_repeater(dev, 0);
+ }
+
+ if (dev->freq > dev->offs_freq)
+ r |= rtlsdr_set_center_freq(dev, dev->freq);
+
+ return r;
+}
+
+int rtlsdr_get_offset_tuning(rtlsdr_dev_t *dev)
+{
+ if (!dev)
+ return -1;
+
+ return (dev->offs_freq) ? 1 : 0;
+}
+
+static rtlsdr_dongle_t *find_known_device(uint16_t vid, uint16_t pid)
+{
+ unsigned int i;
+ rtlsdr_dongle_t *device = NULL;
+
+ for (i = 0; i < sizeof(known_devices)/sizeof(rtlsdr_dongle_t); i++ ) {
+ if (known_devices[i].vid == vid && known_devices[i].pid == pid) {
+ device = &known_devices[i];
+ break;
+ }
+ }
+
+ return device;
+}
+
+uint32_t rtlsdr_get_device_count(void)
+{
+ int i,r;
+ libusb_context *ctx;
+ libusb_device **list;
+ uint32_t device_count = 0;
+ struct libusb_device_descriptor dd;
+ ssize_t cnt;
+
+ r = libusb_init(&ctx);
+ if(r < 0)
+ return 0;
+
+ cnt = libusb_get_device_list(ctx, &list);
+
+ for (i = 0; i < cnt; i++) {
+ libusb_get_device_descriptor(list[i], &dd);
+
+ if (find_known_device(dd.idVendor, dd.idProduct))
+ device_count++;
+ }
+
+ libusb_free_device_list(list, 1);
+
+ libusb_exit(ctx);
+
+ return device_count;
+}
+
+const char *rtlsdr_get_device_name(uint32_t index)
+{
+ int i,r;
+ libusb_context *ctx;
+ libusb_device **list;
+ struct libusb_device_descriptor dd;
+ rtlsdr_dongle_t *device = NULL;
+ uint32_t device_count = 0;
+ ssize_t cnt;
+
+ r = libusb_init(&ctx);
+ if(r < 0)
+ return "";
+
+ cnt = libusb_get_device_list(ctx, &list);
+
+ for (i = 0; i < cnt; i++) {
+ libusb_get_device_descriptor(list[i], &dd);
+
+ device = find_known_device(dd.idVendor, dd.idProduct);
+
+ if (device) {
+ device_count++;
+
+ if (index == device_count - 1)
+ break;
+ }
+ }
+
+ libusb_free_device_list(list, 1);
+
+ libusb_exit(ctx);
+
+ if (device)
+ return device->name;
+ else
+ return "";
+}
+
+int rtlsdr_get_device_usb_strings(uint32_t index, char *manufact,
+ char *product, char *serial)
+{
+ int r = -2;
+ int i;
+ libusb_context *ctx;
+ libusb_device **list;
+ struct libusb_device_descriptor dd;
+ rtlsdr_dongle_t *device = NULL;
+ rtlsdr_dev_t devt;
+ uint32_t device_count = 0;
+ ssize_t cnt;
+
+ r = libusb_init(&ctx);
+ if(r < 0)
+ return r;
+
+ cnt = libusb_get_device_list(ctx, &list);
+
+ for (i = 0; i < cnt; i++) {
+ libusb_get_device_descriptor(list[i], &dd);
+
+ device = find_known_device(dd.idVendor, dd.idProduct);
+
+ if (device) {
+ device_count++;
+
+ if (index == device_count - 1) {
+ r = libusb_open(list[i], &devt.devh);
+ if (!r) {
+ r = rtlsdr_get_usb_strings(&devt,
+ manufact,
+ product,
+ serial);
+ libusb_close(devt.devh);
+ }
+ break;
+ }
+ }
+ }
+
+ libusb_free_device_list(list, 1);
+
+ libusb_exit(ctx);
+
+ return r;
+}
+
+int rtlsdr_get_index_by_serial(const char *serial)
+{
+ int i, cnt, r;
+ char str[256];
+
+ if (!serial)
+ return -1;
+
+ cnt = rtlsdr_get_device_count();
+
+ if (!cnt)
+ return -2;
+
+ for (i = 0; i < cnt; i++) {
+ r = rtlsdr_get_device_usb_strings(i, NULL, NULL, str);
+ if (!r && !strcmp(serial, str))
+ return i;
+ }
+
+ return -3;
+}
+
+int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index)
+{
+ int r;
+ int i;
+ libusb_device **list;
+ rtlsdr_dev_t *dev = NULL;
+ libusb_device *device = NULL;
+ uint32_t device_count = 0;
+ struct libusb_device_descriptor dd;
+ uint8_t reg;
+ ssize_t cnt;
+
+ dev = malloc(sizeof(rtlsdr_dev_t));
+ if (NULL == dev)
+ return -ENOMEM;
+
+ memset(dev, 0, sizeof(rtlsdr_dev_t));
+ memcpy(dev->fir, fir_default, sizeof(fir_default));
+
+ r = libusb_init(&dev->ctx);
+ if(r < 0){
+ free(dev);
+ return -1;
+ }
+
+ dev->dev_lost = 1;
+
+ cnt = libusb_get_device_list(dev->ctx, &list);
+
+ for (i = 0; i < cnt; i++) {
+ device = list[i];
+
+ libusb_get_device_descriptor(list[i], &dd);
+
+ if (find_known_device(dd.idVendor, dd.idProduct)) {
+ device_count++;
+ }
+
+ if (index == device_count - 1)
+ break;
+
+ device = NULL;
+ }
+
+ if (!device) {
+ r = -1;
+ goto err;
+ }
+
+ r = libusb_open(device, &dev->devh);
+ if (r < 0) {
+ libusb_free_device_list(list, 1);
+ fprintf(stderr, "usb_open error %d\n", r);
+ if(r == LIBUSB_ERROR_ACCESS)
+ fprintf(stderr, "Please fix the device permissions, e.g. "
+ "by installing the udev rules file rtl-sdr.rules\n");
+ goto err;
+ }
+
+ libusb_free_device_list(list, 1);
+
+ if (libusb_kernel_driver_active(dev->devh, 0) == 1) {
+ dev->driver_active = 1;
+
+#ifdef DETACH_KERNEL_DRIVER
+ if (!libusb_detach_kernel_driver(dev->devh, 0)) {
+ fprintf(stderr, "Detached kernel driver\n");
+ } else {
+ fprintf(stderr, "Detaching kernel driver failed!");
+ goto err;
+ }
+#else
+ fprintf(stderr, "\nKernel driver is active, or device is "
+ "claimed by second instance of librtlsdr."
+ "\nIn the first case, please either detach"
+ " or blacklist the kernel module\n"
+ "(dvb_usb_rtl28xxu), or enable automatic"
+ " detaching at compile time.\n\n");
+#endif
+ }
+
+ r = libusb_claim_interface(dev->devh, 0);
+ if (r < 0) {
+ fprintf(stderr, "usb_claim_interface error %d\n", r);
+ goto err;
+ }
+
+ dev->rtl_xtal = DEF_RTL_XTAL_FREQ;
+
+ /* perform a dummy write, if it fails, reset the device */
+ if (rtlsdr_write_reg(dev, USBB, USB_SYSCTL, 0x09, 1) < 0) {
+ fprintf(stderr, "Resetting device...\n");
+ libusb_reset_device(dev->devh);
+ }
+
+ rtlsdr_init_baseband(dev);
+ dev->dev_lost = 0;
+
+ /* Probe tuners */
+ rtlsdr_set_i2c_repeater(dev, 1);
+
+ reg = rtlsdr_i2c_read_reg(dev, E4K_I2C_ADDR, E4K_CHECK_ADDR);
+ if (reg == E4K_CHECK_VAL) {
+ fprintf(stderr, "Found Elonics E4000 tuner\n");
+ dev->tuner_type = RTLSDR_TUNER_E4000;
+ goto found;
+ }
+
+ reg = rtlsdr_i2c_read_reg(dev, FC0013_I2C_ADDR, FC0013_CHECK_ADDR);
+ if (reg == FC0013_CHECK_VAL) {
+ fprintf(stderr, "Found Fitipower FC0013 tuner\n");
+ dev->tuner_type = RTLSDR_TUNER_FC0013;
+ goto found;
+ }
+
+ reg = rtlsdr_i2c_read_reg(dev, R820T_I2C_ADDR, R82XX_CHECK_ADDR);
+ if (reg == R82XX_CHECK_VAL) {
+ fprintf(stderr, "Found Rafael Micro R820T tuner\n");
+ dev->tuner_type = RTLSDR_TUNER_R820T;
+ goto found;
+ }
+
+ reg = rtlsdr_i2c_read_reg(dev, R828D_I2C_ADDR, R82XX_CHECK_ADDR);
+ if (reg == R82XX_CHECK_VAL) {
+ fprintf(stderr, "Found Rafael Micro R828D tuner\n");
+ dev->tuner_type = RTLSDR_TUNER_R828D;
+ goto found;
+ }
+
+ /* initialise GPIOs */
+ rtlsdr_set_gpio_output(dev, 4);
+
+ /* reset tuner before probing */
+ rtlsdr_set_gpio_bit(dev, 4, 1);
+ rtlsdr_set_gpio_bit(dev, 4, 0);
+
+ reg = rtlsdr_i2c_read_reg(dev, FC2580_I2C_ADDR, FC2580_CHECK_ADDR);
+ if ((reg & 0x7f) == FC2580_CHECK_VAL) {
+ fprintf(stderr, "Found FCI 2580 tuner\n");
+ dev->tuner_type = RTLSDR_TUNER_FC2580;
+ goto found;
+ }
+
+ reg = rtlsdr_i2c_read_reg(dev, FC0012_I2C_ADDR, FC0012_CHECK_ADDR);
+ if (reg == FC0012_CHECK_VAL) {
+ fprintf(stderr, "Found Fitipower FC0012 tuner\n");
+ rtlsdr_set_gpio_output(dev, 6);
+ dev->tuner_type = RTLSDR_TUNER_FC0012;
+ goto found;
+ }
+
+found:
+ /* use the rtl clock value by default */
+ dev->tun_xtal = dev->rtl_xtal;
+ dev->tuner = &tuners[dev->tuner_type];
+
+ switch (dev->tuner_type) {
+ case RTLSDR_TUNER_R828D:
+ dev->tun_xtal = R828D_XTAL_FREQ;
+ /* fall-through */
+ case RTLSDR_TUNER_R820T:
+ /* disable Zero-IF mode */
+ rtlsdr_demod_write_reg(dev, 1, 0xb1, 0x1a, 1);
+
+ /* only enable In-phase ADC input */
+ rtlsdr_demod_write_reg(dev, 0, 0x08, 0x4d, 1);
+
+ /* the R82XX use 3.57 MHz IF for the DVB-T 6 MHz mode, and
+ * 4.57 MHz for the 8 MHz mode */
+ rtlsdr_set_if_freq(dev, R82XX_IF_FREQ);
+
+ /* enable spectrum inversion */
+ rtlsdr_demod_write_reg(dev, 1, 0x15, 0x01, 1);
+ break;
+ case RTLSDR_TUNER_UNKNOWN:
+ fprintf(stderr, "No supported tuner found\n");
+ rtlsdr_set_direct_sampling(dev, 1);
+ break;
+ default:
+ break;
+ }
+
+ if (dev->tuner->init)
+ r = dev->tuner->init(dev);
+
+ rtlsdr_set_i2c_repeater(dev, 0);
+
+ *out_dev = dev;
+
+ return 0;
+err:
+ if (dev) {
+ if (dev->devh)
+ libusb_close(dev->devh);
+
+ if (dev->ctx)
+ libusb_exit(dev->ctx);
+
+ free(dev);
+ }
+
+ return r;
+}
+
+int rtlsdr_close(rtlsdr_dev_t *dev)
+{
+ if (!dev)
+ return -1;
+
+ if(!dev->dev_lost) {
+ /* block until all async operations have been completed (if any) */
+ while (RTLSDR_INACTIVE != dev->async_status) {
+#ifdef _WIN32
+ Sleep(1);
+#else
+ usleep(1000);
+#endif
+ }
+
+ rtlsdr_deinit_baseband(dev);
+ }
+
+ libusb_release_interface(dev->devh, 0);
+
+#ifdef DETACH_KERNEL_DRIVER
+ if (dev->driver_active) {
+ if (!libusb_attach_kernel_driver(dev->devh, 0))
+ fprintf(stderr, "Reattached kernel driver\n");
+ else
+ fprintf(stderr, "Reattaching kernel driver failed!\n");
+ }
+#endif
+
+ libusb_close(dev->devh);
+
+ libusb_exit(dev->ctx);
+
+ free(dev);
+
+ return 0;
+}
+
+int rtlsdr_reset_buffer(rtlsdr_dev_t *dev)
+{
+ if (!dev)
+ return -1;
+
+ rtlsdr_write_reg(dev, USBB, USB_EPA_CTL, 0x1002, 2);
+ rtlsdr_write_reg(dev, USBB, USB_EPA_CTL, 0x0000, 2);
+
+ return 0;
+}
+
+int rtlsdr_read_sync(rtlsdr_dev_t *dev, void *buf, int len, int *n_read)
+{
+ if (!dev)
+ return -1;
+
+ return libusb_bulk_transfer(dev->devh, 0x81, buf, len, n_read, BULK_TIMEOUT);
+}
+
+static void LIBUSB_CALL _libusb_callback(struct libusb_transfer *xfer)
+{
+ rtlsdr_dev_t *dev = (rtlsdr_dev_t *)xfer->user_data;
+
+ if (LIBUSB_TRANSFER_COMPLETED == xfer->status) {
+ if (dev->cb)
+ dev->cb(xfer->buffer, xfer->actual_length, dev->cb_ctx);
+
+ libusb_submit_transfer(xfer); /* resubmit transfer */
+ dev->xfer_errors = 0;
+ } else if (LIBUSB_TRANSFER_CANCELLED != xfer->status) {
+#ifndef _WIN32
+ if (LIBUSB_TRANSFER_ERROR == xfer->status)
+ dev->xfer_errors++;
+
+ if (dev->xfer_errors >= dev->xfer_buf_num ||
+ LIBUSB_TRANSFER_NO_DEVICE == xfer->status) {
+#endif
+ dev->dev_lost = 1;
+ rtlsdr_cancel_async(dev);
+ fprintf(stderr, "cb transfer status: %d, "
+ "canceling...\n", xfer->status);
+#ifndef _WIN32
+ }
+#endif
+ }
+}
+
+int rtlsdr_wait_async(rtlsdr_dev_t *dev, rtlsdr_read_async_cb_t cb, void *ctx)
+{
+ return rtlsdr_read_async(dev, cb, ctx, 0, 0);
+}
+
+static int _rtlsdr_alloc_async_buffers(rtlsdr_dev_t *dev)
+{
+ unsigned int i;
+
+ if (!dev)
+ return -1;
+
+ if (!dev->xfer) {
+ dev->xfer = malloc(dev->xfer_buf_num *
+ sizeof(struct libusb_transfer *));
+
+ for(i = 0; i < dev->xfer_buf_num; ++i)
+ dev->xfer[i] = libusb_alloc_transfer(0);
+ }
+
+ if (dev->xfer_buf)
+ return -2;
+
+ dev->xfer_buf = malloc(dev->xfer_buf_num * sizeof(unsigned char *));
+ memset(dev->xfer_buf, 0, dev->xfer_buf_num * sizeof(unsigned char *));
+
+#if defined(ENABLE_ZEROCOPY) && defined (__linux__) && LIBUSB_API_VERSION >= 0x01000105
+ fprintf(stderr, "Allocating %d zero-copy buffers\n", dev->xfer_buf_num);
+
+ dev->use_zerocopy = 1;
+ for (i = 0; i < dev->xfer_buf_num; ++i) {
+ dev->xfer_buf[i] = libusb_dev_mem_alloc(dev->devh, dev->xfer_buf_len);
+
+ if (dev->xfer_buf[i]) {
+ /* Check if Kernel usbfs mmap() bug is present: if the
+ * mapping is correct, the buffers point to memory that
+ * was memset to 0 by the Kernel, otherwise, they point
+ * to random memory. We check if the buffers are zeroed
+ * and otherwise fall back to buffers in userspace.
+ */
+ if (dev->xfer_buf[i][0] || memcmp(dev->xfer_buf[i],
+ dev->xfer_buf[i] + 1,
+ dev->xfer_buf_len - 1)) {
+ fprintf(stderr, "Detected Kernel usbfs mmap() "
+ "bug, falling back to buffers "
+ "in userspace\n");
+ dev->use_zerocopy = 0;
+ break;
+ }
+ } else {
+ fprintf(stderr, "Failed to allocate zero-copy "
+ "buffer for transfer %d\nFalling "
+ "back to buffers in userspace\n", i);
+ dev->use_zerocopy = 0;
+ break;
+ }
+ }
+
+ /* zero-copy buffer allocation failed (partially or completely)
+ * we need to free the buffers again if already allocated */
+ if (!dev->use_zerocopy) {
+ for (i = 0; i < dev->xfer_buf_num; ++i) {
+ if (dev->xfer_buf[i])
+ libusb_dev_mem_free(dev->devh,
+ dev->xfer_buf[i],
+ dev->xfer_buf_len);
+ }
+ }
+#endif
+
+ /* no zero-copy available, allocate buffers in userspace */
+ if (!dev->use_zerocopy) {
+ for (i = 0; i < dev->xfer_buf_num; ++i) {
+ dev->xfer_buf[i] = malloc(dev->xfer_buf_len);
+
+ if (!dev->xfer_buf[i])
+ return -ENOMEM;
+ }
+ }
+
+ return 0;
+}
+
+static int _rtlsdr_free_async_buffers(rtlsdr_dev_t *dev)
+{
+ unsigned int i;
+
+ if (!dev)
+ return -1;
+
+ if (dev->xfer) {
+ for(i = 0; i < dev->xfer_buf_num; ++i) {
+ if (dev->xfer[i]) {
+ libusb_free_transfer(dev->xfer[i]);
+ }
+ }
+
+ free(dev->xfer);
+ dev->xfer = NULL;
+ }
+
+ if (dev->xfer_buf) {
+ for (i = 0; i < dev->xfer_buf_num; ++i) {
+ if (dev->xfer_buf[i]) {
+ if (dev->use_zerocopy) {
+#if defined (__linux__) && LIBUSB_API_VERSION >= 0x01000105
+ libusb_dev_mem_free(dev->devh,
+ dev->xfer_buf[i],
+ dev->xfer_buf_len);
+#endif
+ } else {
+ free(dev->xfer_buf[i]);
+ }
+ }
+ }
+
+ free(dev->xfer_buf);
+ dev->xfer_buf = NULL;
+ }
+
+ return 0;
+}
+
+int rtlsdr_read_async(rtlsdr_dev_t *dev, rtlsdr_read_async_cb_t cb, void *ctx,
+ uint32_t buf_num, uint32_t buf_len)
+{
+ unsigned int i;
+ int r = 0;
+ struct timeval tv = { 1, 0 };
+ struct timeval zerotv = { 0, 0 };
+ enum rtlsdr_async_status next_status = RTLSDR_INACTIVE;
+
+ if (!dev)
+ return -1;
+
+ if (RTLSDR_INACTIVE != dev->async_status)
+ return -2;
+
+ dev->async_status = RTLSDR_RUNNING;
+ dev->async_cancel = 0;
+
+ dev->cb = cb;
+ dev->cb_ctx = ctx;
+
+ if (buf_num > 0)
+ dev->xfer_buf_num = buf_num;
+ else
+ dev->xfer_buf_num = DEFAULT_BUF_NUMBER;
+
+ if (buf_len > 0 && buf_len % 512 == 0) /* len must be multiple of 512 */
+ dev->xfer_buf_len = buf_len;
+ else
+ dev->xfer_buf_len = DEFAULT_BUF_LENGTH;
+
+ _rtlsdr_alloc_async_buffers(dev);
+
+ for(i = 0; i < dev->xfer_buf_num; ++i) {
+ libusb_fill_bulk_transfer(dev->xfer[i],
+ dev->devh,
+ 0x81,
+ dev->xfer_buf[i],
+ dev->xfer_buf_len,
+ _libusb_callback,
+ (void *)dev,
+ BULK_TIMEOUT);
+
+ r = libusb_submit_transfer(dev->xfer[i]);
+ if (r < 0) {
+ fprintf(stderr, "Failed to submit transfer %i\n"
+ "Please increase your allowed "
+ "usbfs buffer size with the "
+ "following command:\n"
+ "echo 0 > /sys/module/usbcore"
+ "/parameters/usbfs_memory_mb\n", i);
+ dev->async_status = RTLSDR_CANCELING;
+ break;
+ }
+ }
+
+ while (RTLSDR_INACTIVE != dev->async_status) {
+ r = libusb_handle_events_timeout_completed(dev->ctx, &tv,
+ &dev->async_cancel);
+ if (r < 0) {
+ /*fprintf(stderr, "handle_events returned: %d\n", r);*/
+ if (r == LIBUSB_ERROR_INTERRUPTED) /* stray signal */
+ continue;
+ break;
+ }
+
+ if (RTLSDR_CANCELING == dev->async_status) {
+ next_status = RTLSDR_INACTIVE;
+
+ if (!dev->xfer)
+ break;
+
+ for(i = 0; i < dev->xfer_buf_num; ++i) {
+ if (!dev->xfer[i])
+ continue;
+
+ if (LIBUSB_TRANSFER_CANCELLED !=
+ dev->xfer[i]->status) {
+ r = libusb_cancel_transfer(dev->xfer[i]);
+ /* handle events after canceling
+ * to allow transfer status to
+ * propagate */
+#ifdef _WIN32
+ Sleep(1);
+#endif
+ libusb_handle_events_timeout_completed(dev->ctx,
+ &zerotv, NULL);
+ if (r < 0)
+ continue;
+
+ next_status = RTLSDR_CANCELING;
+ }
+ }
+
+ if (dev->dev_lost || RTLSDR_INACTIVE == next_status) {
+ /* handle any events that still need to
+ * be handled before exiting after we
+ * just cancelled all transfers */
+ libusb_handle_events_timeout_completed(dev->ctx,
+ &zerotv, NULL);
+ break;
+ }
+ }
+ }
+
+ _rtlsdr_free_async_buffers(dev);
+
+ dev->async_status = next_status;
+
+ return r;
+}
+
+int rtlsdr_cancel_async(rtlsdr_dev_t *dev)
+{
+ if (!dev)
+ return -1;
+
+ /* if streaming, try to cancel gracefully */
+ if (RTLSDR_RUNNING == dev->async_status) {
+ dev->async_status = RTLSDR_CANCELING;
+ dev->async_cancel = 1;
+ return 0;
+ }
+
+ /* if called while in pending state, change the state forcefully */
+#if 0
+ if (RTLSDR_INACTIVE != dev->async_status) {
+ dev->async_status = RTLSDR_INACTIVE;
+ return 0;
+ }
+#endif
+ return -2;
+}
+
+uint32_t rtlsdr_get_tuner_clock(void *dev)
+{
+ uint32_t tuner_freq;
+
+ if (!dev)
+ return 0;
+
+ /* read corrected clock value */
+ if (rtlsdr_get_xtal_freq((rtlsdr_dev_t *)dev, NULL, &tuner_freq))
+ return 0;
+
+ return tuner_freq;
+}
+
+int rtlsdr_i2c_write_fn(void *dev, uint8_t addr, uint8_t *buf, int len)
+{
+ if (dev)
+ return rtlsdr_i2c_write(((rtlsdr_dev_t *)dev), addr, buf, len);
+
+ return -1;
+}
+
+int rtlsdr_i2c_read_fn(void *dev, uint8_t addr, uint8_t *buf, int len)
+{
+ if (dev)
+ return rtlsdr_i2c_read(((rtlsdr_dev_t *)dev), addr, buf, len);
+
+ return -1;
+}
+
+int rtlsdr_set_bias_tee_gpio(rtlsdr_dev_t *dev, int gpio, int on)
+{
+ if (!dev)
+ return -1;
+
+ rtlsdr_set_gpio_output(dev, gpio);
+ rtlsdr_set_gpio_bit(dev, gpio, on);
+
+ return 0;
+}
+
+int rtlsdr_set_bias_tee(rtlsdr_dev_t *dev, int on)
+{
+ return rtlsdr_set_bias_tee_gpio(dev, 0, on);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 18:27:48 +0000