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/* * rtl-sdr, turns your Realtek RTL2832 based DVB dongle into a SDR receiver * Copyright (C) 2012-2013 by Steve Markgraf * Copyright (C) 2012 by Dimitri Stolnikov * * 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 . */ #ifndef __RTL_SDR_H #define __RTL_SDR_H #ifdef __cplusplus extern "C" { #endif #include #include #include typedef struct rtlsdr_dev rtlsdr_dev_t; RTLSDR_API uint32_t rtlsdr_get_device_count(void); RTLSDR_API const char* rtlsdr_get_device_name(uint32_t index); /*! * Get USB device strings. * * NOTE: The string arguments must provide space for up to 256 bytes. * * \param index the device index * \param manufact manufacturer name, may be NULL * \param product product name, may be NULL * \param serial serial number, may be NULL * \return 0 on success */ RTLSDR_API int rtlsdr_get_device_usb_strings(uint32_t index, char *manufact, char *product, char *serial); /*! * Get device index by USB serial string descriptor. * * \param serial serial string of the device * \return device index of first device where the name matched * \return -1 if name is NULL * \return -2 if no devices were found at all * \return -3 if devices were found, but none with matching name */ RTLSDR_API int rtlsdr_get_index_by_serial(const char *serial); /*! * Open device index by index. * * \param pointer where to save the device handle, which again is a pointer * \param serial serial string of the device * \return device index to be opened * \return -1 if device or libusb is inaccessible * \return -3 if device permissions don't fit: * check, if udev rules file rtl-sdr.rules needs to be installed * \return negative, for a libusb error code or some other initialization error */ RTLSDR_API int rtlsdr_open(rtlsdr_dev_t **dev, uint32_t index); /*! * Close device. * * \param dev the device handle given by rtlsdr_open() * \return -1 if device handle was already close - or never opened */ RTLSDR_API int rtlsdr_close(rtlsdr_dev_t *dev); /* configuration functions */ /*! * Set crystal oscillator frequencies used for the RTL2832 and the tuner IC. * * Usually both 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. * * NOTE: Call this function only if you fully understand the implications. * * \param dev the device handle given by rtlsdr_open() * \param rtl_freq frequency value used to clock the RTL2832 in Hz * \param tuner_freq frequency value used to clock the tuner IC in Hz * \return 0 on success */ RTLSDR_API int rtlsdr_set_xtal_freq(rtlsdr_dev_t *dev, uint32_t rtl_freq, uint32_t tuner_freq); /*! * Get crystal oscillator frequencies used for the RTL2832 and the tuner IC. * * Usually both ICs use the same clock. * * \param dev the device handle given by rtlsdr_open() * \param rtl_freq frequency value used to clock the RTL2832 in Hz * \param tuner_freq frequency value used to clock the tuner IC in Hz * \return 0 on success */ RTLSDR_API int rtlsdr_get_xtal_freq(rtlsdr_dev_t *dev, uint32_t *rtl_freq, uint32_t *tuner_freq); /*! * Get USB device strings. * * NOTE: The string arguments must provide space for up to 256 bytes. * * \param dev the device handle given by rtlsdr_open() * \param manufact manufacturer name, may be NULL * \param product product name, may be NULL * \param serial serial number, may be NULL * \return 0 on success */ RTLSDR_API int rtlsdr_get_usb_strings(rtlsdr_dev_t *dev, char *manufact, char *product, char *serial); /*! * Write the device EEPROM * * \param dev the device handle given by rtlsdr_open() * \param data buffer of data to be written * \param offset address where the data should be written * \param len length of the data * \return 0 on success * \return -1 if device handle is invalid * \return -2 if EEPROM size is exceeded * \return -3 if no EEPROM was found */ RTLSDR_API int rtlsdr_write_eeprom(rtlsdr_dev_t *dev, uint8_t *data, uint8_t offset, uint16_t len); /*! * Read the device EEPROM * * \param dev the device handle given by rtlsdr_open() * \param data buffer where the data should be written * \param offset address where the data should be read from * \param len length of the data * \return 0 on success * \return -1 if device handle is invalid * \return -2 if EEPROM size is exceeded * \return -3 if no EEPROM was found */ RTLSDR_API int rtlsdr_read_eeprom(rtlsdr_dev_t *dev, uint8_t *data, uint8_t offset, uint16_t len); /*! * Set the frequency the device is tuned to. * * \param dev the device handle given by rtlsdr_open() * \param frequency in Hz * \return 0 on success * \return < 0 if device handle is invalid or some other error */ RTLSDR_API int rtlsdr_set_center_freq(rtlsdr_dev_t *dev, uint32_t freq); /*! * Set the frequency the device is tuned to: allow frequency > 32 bit ~= 4.29 GHz * * \param dev the device handle given by rtlsdr_open() * \param frequency in Hz in 64 bit * \return 0 on success * \return < 0 if device handle is invalid or some other error */ RTLSDR_API int rtlsdr_set_center_freq64(rtlsdr_dev_t *dev, uint64_t freq); /*! * Set harmonic reception - for R820T/2 tuner * * \param dev the device handle given by rtlsdr_open() * \param harmonic - receive n'th harmonic. 0 = default for disabling this * \return 0 on success * \return < 0 if device handle is invalid or some other error */ RTLSDR_API int rtlsdr_set_harmonic_rx(rtlsdr_dev_t *dev, int harmonic); /*! * Check, if tuner PLL (frequency) is still locked. * Tuner/PLL might loose lock (at high frequencies), * e.g. for temperature reasons * * \param dev the device handle given by rtlsdr_open() * \return 1: PLL is NOT locked * \return 0: PLL HAS lock * \return < 0: if device handle is invalid or some other error * \return -2: not supported for devices' tuner */ RTLSDR_API int rtlsdr_is_tuner_PLL_locked(rtlsdr_dev_t *dev); /*! * Get actual frequency the device is tuned to. * * \param dev the device handle given by rtlsdr_open() * \return 0 on error, frequency in Hz otherwise */ RTLSDR_API uint32_t rtlsdr_get_center_freq(rtlsdr_dev_t *dev); /*! * Get actual frequency the device is tuned to. * * \param dev the device handle given by rtlsdr_open() * \return 0 on error, frequency in Hz otherwise */ RTLSDR_API uint64_t rtlsdr_get_center_freq64(rtlsdr_dev_t *dev); /*! * Set the frequency correction value for the device. * * \param dev the device handle given by rtlsdr_open() * \param ppm correction value in parts per million (ppm) * \return 0 on success */ RTLSDR_API int rtlsdr_set_freq_correction(rtlsdr_dev_t *dev, int ppm); /*! * Get actual frequency correction value of the device. * * \param dev the device handle given by rtlsdr_open() * \return correction value in parts per million (ppm) * if dev is valid, no error can occur */ RTLSDR_API int rtlsdr_get_freq_correction(rtlsdr_dev_t *dev); enum rtlsdr_tuner { RTLSDR_TUNER_UNKNOWN = 0, RTLSDR_TUNER_E4000, RTLSDR_TUNER_FC0012, RTLSDR_TUNER_FC0013, RTLSDR_TUNER_FC2580, RTLSDR_TUNER_R820T, /* or R820T2 - R820T and R820T2 is not disdinguishable */ RTLSDR_TUNER_R828D }; /*! * Get the tuner type. * * \param dev the device handle given by rtlsdr_open() * \return RTLSDR_TUNER_UNKNOWN on error, tuner type otherwise */ RTLSDR_API enum rtlsdr_tuner rtlsdr_get_tuner_type(rtlsdr_dev_t *dev); /*! * Get a list of gains supported by the tuner. * * NOTE: The gains argument must be preallocated by the caller. If NULL is * being given instead, the number of available gain values will be returned. * * \param dev the device handle given by rtlsdr_open() * \param gains array of gain values. In tenths of a dB, 115 means 11.5 dB. * \return <= 0 on error, number of available (returned) gain values otherwise */ RTLSDR_API int rtlsdr_get_tuner_gains(rtlsdr_dev_t *dev, int *gains); /*! * Set the gain for the device. * Manual gain mode must be enabled for this to work. * * Valid gain values (in tenths of a dB) for the E4000 tuner: * -10, 15, 40, 65, 90, 115, 140, 165, 190, * 215, 240, 290, 340, 420, 430, 450, 470, 490 * * Valid gain values may be queried with \ref rtlsdr_get_tuner_gains function. * * \param dev the device handle given by rtlsdr_open() * \param gain in tenths of a dB, 115 means 11.5 dB. * \return 0 on success */ RTLSDR_API int rtlsdr_set_tuner_gain(rtlsdr_dev_t *dev, int gain); /*! * Set (and retrieve) the bandwidth for the device. * * \param dev the device handle given by rtlsdr_open() * \param bw bandwidth in Hz. Zero means automatic BW selection. * \param applied_bw is applied bandwidth in Hz, or 0 if unknown * \param apply_bw: 1 to really apply configure the tuner chip; 0 for just returning applied_bw * \return 0 on success */ RTLSDR_API int rtlsdr_set_and_get_tuner_bandwidth(rtlsdr_dev_t *dev, uint32_t bw, uint32_t *applied_bw, int apply_bw ); /*! * Set the bandwidth for the device. * * \param dev the device handle given by rtlsdr_open() * \param bw bandwidth in Hz. Zero means automatic BW selection. * \return 0 on success */ RTLSDR_API int rtlsdr_set_tuner_bandwidth(rtlsdr_dev_t *dev, uint32_t bw ); /*! * Sets the center of the filtered tuner band(width) * * \param dev the device handle given by rtlsdr_open() * \param if_band_center_freq in Hz. Zero means, that band center shall be at zero (=default). * set if_band_center_freq = +samplerate/4 to have the filtered band centered at output's right half. * \return 0 on success */ RTLSDR_API int rtlsdr_set_tuner_band_center(rtlsdr_dev_t *dev, int32_t if_band_center_freq ); /*! * Set the mixer sideband for the device. * * \param dev the device handle given by rtlsdr_open() * \param sideband mixer sideband 0 means lower sideband, 1 means upper sideband. * \return 0 on success */ RTLSDR_API int rtlsdr_set_tuner_sideband(rtlsdr_dev_t *dev, int sideband); /*! * Get actual (RF / HF) gain the device is configured to - excluding the IF gain. * * \param dev the device handle given by rtlsdr_open() * \return 0 on error, gain in tenths of a dB, 115 means 11.5 dB. * unfortunately it's impossible to distinguish error against 0 dB */ RTLSDR_API int rtlsdr_get_tuner_gain(rtlsdr_dev_t *dev); /*! * Set LNA / Mixer / VGA Device Gain for R820T/2 device is configured to. * * \param dev the device handle given by rtlsdr_open() * \param lna_gain index in 0 .. 15: 0 == min; see tuner_r82xx.c table r82xx_lna_gain_steps[] * \param mixer_gain index in 0 .. 15: 0 == min; see tuner_r82xx.c table r82xx_mixer_gain_steps[] * \param vga_gain index in 0 .. 15: 0 == -12 dB; 15 == 40.5 dB; => 3.5 dB/step; * vga_gain index 16 activates AGC for VGA controlled from RTL2832 * see tuner_r82xx.c table r82xx_vga_gain_steps[] * \return 0 on success */ RTLSDR_API int rtlsdr_set_tuner_gain_ext(rtlsdr_dev_t *dev, int lna_gain, int mixer_gain, int vga_gain); /*! * Set the intermediate frequency gain for the device. * * \param dev the device handle given by rtlsdr_open() * \param stage intermediate frequency gain stage number (1 to 6 for E4000) * \param gain in tenths of a dB, -30 means -3.0 dB. * \return 0 on success */ RTLSDR_API int rtlsdr_set_tuner_if_gain(rtlsdr_dev_t *dev, int stage, int gain); /*! * Set the gain mode (automatic/manual) for the device. * Manual gain mode must be enabled for the gain setter function to work. * * \param dev the device handle given by rtlsdr_open() * \param manual gain mode, 1 means manual gain mode shall be enabled. * \return 0 on success */ RTLSDR_API int rtlsdr_set_tuner_gain_mode(rtlsdr_dev_t *dev, int manual); /*! * Set the agc_variant for automatic gain mode for the device (only R820T/2). * Automatic gain mode must be enabled for the gain setter function to work. * * \param dev the device handle given by rtlsdr_open() * \param if_mode: * 0 set automatic VGA, which is controlled from RTL2832 * -2500 .. +2500: set fixed IF gain in tenths of a dB, 115 means 11.5 dB. * use -1 or +1 in case you neither want attenuation nor gain. * this equals the VGA gain for R820T/2 tuner. * exact values (R820T/2) are in range -47 .. 408 in tenth of a dB, * giving -4.7 .. +40.8 dB. these exact values may slightly change * with better measurements. * 10000 .. 10015: IF gain == VGA index from parameter if_mode * set if_mode by index: index := VGA_idx +10000 * 10016 .. 10031: same as 10000 .. 10015, but additionally set automatic VGA * 10011: for fixed VGA (=default) of -12 dB + 11 * 3.5 dB = 26.5 dB * * \return 0 on success */ RTLSDR_API int rtlsdr_set_tuner_if_mode(rtlsdr_dev_t *dev, int if_mode); /*! * Set the sample rate for the device, also selects the baseband filters * according to the requested sample rate for tuners where this is possible. * * \param dev the device handle given by rtlsdr_open() * \param samp_rate the sample rate to be set, possible values are: * 225001 - 300000 Hz * 900001 - 3200000 Hz * sample loss is to be expected for rates > 2400000 * \return 0 on success, -EINVAL on invalid rate */ RTLSDR_API int rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t rate); /*! * Get actual sample rate the device is configured to. * * \param dev the device handle given by rtlsdr_open() * \return 0 on error, sample rate in Hz otherwise */ RTLSDR_API uint32_t rtlsdr_get_sample_rate(rtlsdr_dev_t *dev); /*! * Enable test mode that returns an 8 bit counter instead of the samples. * The counter is generated inside the RTL2832. * * \param dev the device handle given by rtlsdr_open() * \param test mode, 1 means enabled, 0 disabled * \return 0 on success */ RTLSDR_API int rtlsdr_set_testmode(rtlsdr_dev_t *dev, int on); /*! * Enable or disable the internal digital AGC of the RTL2832. * * \param dev the device handle given by rtlsdr_open() * \param digital AGC mode, 1 means enabled, 0 disabled * \return 0 on success */ RTLSDR_API int rtlsdr_set_agc_mode(rtlsdr_dev_t *dev, int on); /*! * Enable or disable the direct sampling mode. When enabled, the IF mode * of the RTL2832 is activated, and rtlsdr_set_center_freq() will control * the IF-frequency of the DDC, which can be used to tune from 0 to 28.8 MHz * (xtal frequency of the RTL2832). * * \param dev the device handle given by rtlsdr_open() * \param on 0 means disabled, 1 I-ADC input enabled, 2 Q-ADC input enabled * \return 0 on success */ RTLSDR_API int rtlsdr_set_direct_sampling(rtlsdr_dev_t *dev, int on); /*! * Get state of the direct sampling mode * * \param dev the device handle given by rtlsdr_open() * \return -1 on error, 0 means disabled, 1 I-ADC input enabled * 2 Q-ADC input enabled */ RTLSDR_API int rtlsdr_get_direct_sampling(rtlsdr_dev_t *dev); enum rtlsdr_ds_mode { RTLSDR_DS_IQ = 0, /* I/Q quadrature sampling of tuner output */ RTLSDR_DS_I, /* 1: direct sampling on I branch: usually not connected */ RTLSDR_DS_Q, /* 2: direct sampling on Q branch: HF on rtl-sdr v3 dongle */ RTLSDR_DS_I_BELOW, /* 3: direct sampling on I branch when frequency below 'DS threshold frequency' */ RTLSDR_DS_Q_BELOW /* 4: direct sampling on Q branch when frequency below 'DS threshold frequency' */ }; /*! * Set direct sampling mode with threshold * * \param dev the device handle given by rtlsdr_open() * \param mode static modes 0 .. 2 as in rtlsdr_set_direct_sampling(). other modes do automatic switching * \param freq_threshold direct sampling is used below this frequency, else quadrature mode through tuner * set 0 for using default setting per tuner - not fully implemented yet! * \return negative on error, 0 on success */ RTLSDR_API int rtlsdr_set_ds_mode(rtlsdr_dev_t *dev, enum rtlsdr_ds_mode mode, uint32_t freq_threshold); /*! * Enable or disable offset tuning for zero-IF tuners, which allows to avoid * problems caused by the DC offset of the ADCs and 1/f noise. * * \param dev the device handle given by rtlsdr_open() * \param on 0 means disabled, 1 enabled * \return 0 on success */ RTLSDR_API int rtlsdr_set_offset_tuning(rtlsdr_dev_t *dev, int on); /*! * Get state of the offset tuning mode * * \param dev the device handle given by rtlsdr_open() * \return -1 on error, 0 means disabled, 1 enabled */ RTLSDR_API int rtlsdr_get_offset_tuning(rtlsdr_dev_t *dev); /*! * Enable or disable frequency dithering for r820t tuners. * Must be performed before freq_set(). * Fails for other tuners. * * \param dev the device handle given by rtlsdr_open() * \param on 0 means disabled, 1 enabled * \return 0 on success */ RTLSDR_API int rtlsdr_set_dithering(rtlsdr_dev_t *dev, int dither); /* streaming functions */ /*! * Reset buffer in RTL2832 * * \param dev the device handle given by rtlsdr_open() * \return 0 on success * \return -1 on error */ RTLSDR_API int rtlsdr_reset_buffer(rtlsdr_dev_t *dev); /*! * Read data synchronously * * \param dev the device handle given by rtlsdr_open() * \return 0 on success * \return -1 on error or error code from libusb */ RTLSDR_API int rtlsdr_read_sync(rtlsdr_dev_t *dev, void *buf, int len, int *n_read); typedef void(*rtlsdr_read_async_cb_t)(unsigned char *buf, uint32_t len, void *ctx); /*! * Read samples from the device asynchronously. This function will block until * it is being canceled using rtlsdr_cancel_async() * * NOTE: This function is deprecated and is subject for removal. * * \param dev the device handle given by rtlsdr_open() * \param cb callback function to return received samples * \param ctx user specific context to pass via the callback function * \return 0 on success */ RTLSDR_API int rtlsdr_wait_async(rtlsdr_dev_t *dev, rtlsdr_read_async_cb_t cb, void *ctx); /*! * Read samples from the device asynchronously. This function will block until * it is being canceled using rtlsdr_cancel_async() * * \param dev the device handle given by rtlsdr_open() * \param cb callback function to return received samples * \param ctx user specific context to pass via the callback function * \param buf_num optional buffer count, buf_num * buf_len = overall buffer size * set to 0 for default buffer count (15) * \param buf_len optional buffer length, must be multiple of 512, * should be a multiple of 16384 (URB size), set to 0 * for default buffer length (16 * 32 * 512) * \return 0 on success */ RTLSDR_API int rtlsdr_read_async(rtlsdr_dev_t *dev, rtlsdr_read_async_cb_t cb, void *ctx, uint32_t buf_num, uint32_t buf_len); /*! * Cancel all pending asynchronous operations on the device. * Due to incomplete concurrency implementation, this should * only be called from within the callback function, so it is * in the correct thread. * * \param dev the device handle given by rtlsdr_open() * \return 0 on success */ RTLSDR_API int rtlsdr_cancel_async(rtlsdr_dev_t *dev); /*! * Read from the remote control (RC) infrared (IR) sensor * * \param dev the device handle given by rtlsdr_open() * \param buf buffer to write IR signal (MSB=pulse/space, 7LSB=duration*20usec), recommended 128-bytes * \param buf_len size of buf * \return 0 if no signal, >0 number of bytes written into buf, <0 for error */ RTLSDR_API int rtlsdr_ir_query(rtlsdr_dev_t *dev, uint8_t *buf, size_t buf_len); /*! * Enable or disable (the bias tee on) GPIO PIN 0 - if not reconfigured. * See rtlsdr_set_opt_string() option 'T'. * This works for rtl-sdr.com v3 dongles, see * http://www.rtl-sdr.com/rtl-sdr-blog-v-3-dongles-user-guide/ * Note: rtlsdr_close() does not clear GPIO lines, * so it leaves the (bias tee) line enabled if a client program * doesn't explictly disable it. * * \param dev the device handle given by rtlsdr_open() * \param on 1 for Bias T on. 0 for Bias T off. * \return -1 if device is not initialized. 0 otherwise. */ RTLSDR_API int rtlsdr_set_bias_tee(rtlsdr_dev_t *dev, int on); /*! * Enable or disable (the bias tee on) the given GPIO pin. * Note: rtlsdr_close() does not clear GPIO lines, * so it leaves the (bias tee) lines enabled if a client program * doesn't explictly disable it. * * \param dev the device handle given by rtlsdr_open() * \param gpio the gpio pin -- assuming this line is connected to Bias T. * gpio needs to be in 0 .. 7. BUT pin 4 is connected to Tuner RESET. * and for FC0012 is already connected/reserved pin 6 for switching V/U-HF. * \param on 1 for Bias T on. 0 for Bias T off. * \return -1 if device is not initialized. 0 otherwise. */ RTLSDR_API int rtlsdr_set_bias_tee_gpio(rtlsdr_dev_t *dev, int gpio, int on); /* * GPIO 0 .. 7 correspond to RTL2832U's pins as follows: * Pin information from http://lea.hamradio.si/~s57uuu/mischam/rtlsdr/ports.html * * GPIO0 (=pin 37): BiasT for RTL-SDR.com V3 * GPIO1 (=pin 32): usually free - on RTL-SDR.com V3's Expansion Ports * GPIO2 (=pin 31): usually free - on RTL-SDR.com V3's Expansion Ports * GPIO3 (=pin 36): usually free * GPIO4 (=pin 30): RESET for Tuners FC2580 and FC0012 / on RTL-SDR.com V3's Expansion Ports * GPIO5 (=pin 29): usually free - on RTL-SDR.com V3's Expansion Ports * GPIO6 (=pin 22): select V-band/U-band filter for FC0012-Tuner * GPIO7 (=pin 21): usually free * * CAUTION: The port pins use 3.3V logic levels and are static sensitive! * * most of following functions are also copied from Marko Cebokli's site * http://lea.hamradio.si/~s57uuu/mischam/rtlsdr/ports.html * but added return of error/status. * GPIO numbers 'gpio' in range 0 .. 7 for the following gpio functions * all \return negative values, on error */ RTLSDR_API int rtlsdr_set_gpio_output(rtlsdr_dev_t *dev, uint8_t gpio); RTLSDR_API int rtlsdr_set_gpio_input(rtlsdr_dev_t *dev, uint8_t gpio); RTLSDR_API int rtlsdr_set_gpio_bit(rtlsdr_dev_t *dev, uint8_t gpio, int val); RTLSDR_API int rtlsdr_get_gpio_bit(rtlsdr_dev_t *dev, uint8_t gpio, int *val); RTLSDR_API int rtlsdr_set_gpio_byte(rtlsdr_dev_t *dev, int val); RTLSDR_API int rtlsdr_get_gpio_byte(rtlsdr_dev_t *dev, int *val); RTLSDR_API int rtlsdr_set_gpio_status(rtlsdr_dev_t *dev, int *status ); /*! * Sets multiple options from a string encoded like "bw=300:agc=0:gain=27.3:dagc=0:T=1". * this is a helper function, that programs don't need to implement every single option * at the command line interface. * Options are seperated by colon ':'. * There mustn't be extra spaces between option name and '='. * option 'f' set center frequency as in rtlsdr_set_center_freq() * option 'bw' sets tuner bandwidth as in rtlsdr_set_tuner_bandwidth() * - but value is in kHz. * option 'agc' sets tuner gain mode as with rtlsdr_set_tuner_gain_mode(): * '1' means manual gain mode shall be enabled. * option 'gain' sets tuner gain as with rtlsdr_set_tuner_gain(): * values in tenth dB. * option 'dagc' or 'dgc' de/activates digital agc as with rtlsdr_set_agc_mode(). * value 1 to enable. 0 to disable. * option 'ds' set direct sampling as with rtlsdr_set_direct_sampling(): * '0' to deactivate, '1' or 'i' for I-ADC input, '2' or 'q' for Q-ADC input * option 't' or 'T' for enabling bias tee on GPIO PIN 0 as with rtlsdr_set_bias_tee(): * '1' for Bias T on. '0' for Bias T off. * * \param dev the device handle given by rtlsdr_open() * \param opts described option string * \param verbose print parsed options to stderr */ RTLSDR_API int rtlsdr_set_opt_string(rtlsdr_dev_t *dev, const char *opts, int verbose); RTLSDR_API const char * rtlsdr_get_opt_help(int longInfo); /*! * Exposes/permits hacking of Tuner-specific I2C registers: set register once * * \param dev the device handle given by rtlsdr_open() * \param i2c_register register address * \param mask 8-bit bitmask, indicating which bits shall be set * \param data 8-bit data, which shall be set * \return -1 if device is not initialized. 0 otherwise. */ RTLSDR_API int rtlsdr_set_tuner_i2c_register(rtlsdr_dev_t *dev, unsigned i2c_register, unsigned mask, unsigned data); /* TODO: uint8_t */ RTLSDR_API int rtlsdr_get_tuner_i2c_register(rtlsdr_dev_t *dev, unsigned char* data, int len); /*! * Exposes/permits hacking of Tuner-specific I2C registers: set and keep register for future * * \param dev the device handle given by rtlsdr_open() * \param i2c_register register address * \param mask 8-bit bitmask, indicating which bits shall be set * \param data 8-bit data, which shall be set; data in 0 .. 255 sets override; data > 255 clears override * \return -1 if device is not initialized. 0 otherwise. */ RTLSDR_API int rtlsdr_set_tuner_i2c_override(rtlsdr_dev_t *dev, unsigned i2c_register, unsigned mask, unsigned data); /*! * request version id string to identify source and date of library * * \return pointer to C string, e.g. "github.com/librtlsdr" or "github.com/hayguen" or .. with build date (in parantheses) * string keeps owned by library */ RTLSDR_API const char * rtlsdr_get_ver_id(); /*! * request version numbers of library * * \return major version in upper 16 bit, minor revision in lower 16 bit */ RTLSDR_API uint32_t rtlsdr_get_version(); #ifdef __cplusplus } #endif #endif /* __RTL_SDR_H */