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<h1>rtlsdr(3)</h1>
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</div>
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<hr>
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<pre><code><strong>NAME</strong>
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rtlsdr.lib - userspace RTL2832U and R820T2 radio driver
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<strong>SYNOPSIS</strong>
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#include <rtlsdr/rtlsdr.h>
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<strong>DESCRIPTION</strong>
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The library at
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<strong>0:/os/rtlsdr.lib</strong>
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drives supported Realtek RTL2832U USB receivers from userspace through the
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generic process-owned USB API. Supported USB product IDs are 0bda:2832 and
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0bda:2838. Samples are returned as interleaved unsigned 8-bit I/Q pairs.
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Applications load the library with libloader, resolve the
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<strong>rtlsdr_*</strong>
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symbols declared in the header, enumerate devices, open one, configure it,
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start bulk reception, read samples, stop, and close it. Claims are exclusive
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and are released by the kernel if the process exits or the device disconnects.
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<strong>API</strong>
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<strong>rtlsdr_count</strong>
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and
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<strong>rtlsdr_get_device_info</strong>
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enumerate compatible unbound USB interfaces.
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<strong>rtlsdr_open</strong>
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claims an interface and returns an opaque device pointer.
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<strong>rtlsdr_set_center_freq,</strong>
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<strong>rtlsdr_set_sample_rate,</strong>
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<strong>rtlsdr_set_tuner_gain_mode,</strong>
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<strong>rtlsdr_set_tuner_gain,</strong>
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<strong>rtlsdr_set_freq_correction,</strong>
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<strong>rtlsdr_set_agc_mode,</strong>
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and
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<strong>rtlsdr_set_direct_sampling</strong>
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configure the receiver.
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<strong>rtlsdr_start,</strong>
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<strong>rtlsdr_read,</strong>
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and
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<strong>rtlsdr_stop</strong>
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control non-blocking reception.
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<strong>NOTES</strong>
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Syscall numbers 140 through 148 are reserved former SDR slots and are not an
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API. Device-specific control and tuner programming live entirely in this
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library.</code></pre>
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