b85ffcfea5
add library support for EEPROM access and tool for modification
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rtl_eeprom can be used to modify the USB descriptor
strings etc.
Signed-off-by: Steve Markgraf <steve@steve-m.de>
12 years ago
9b8b0e53f6
add getters for direct sampling and offset tuning mode
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Signed-off-by: Steve Markgraf <steve@steve-m.de>
12 years ago
b70c7d99f1
add function for offset tuning with zero-IF tuners
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Signed-off-by: Steve Markgraf <steve@steve-m.de>
12 years ago
01d8d308fc
disable second ADC in IF mode, make input selectable in DS-mode
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Signed-off-by: Steve Markgraf <steve@steve-m.de>
12 years ago
fc5881d4cd
add support for direct sampling mode
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This commit adds the function rtlsdr_set_direct_sampling()
which can be used to enable/disable a mode where the
RTL2832 acts as a direct sampling receiver.
This mode disables the tuner, and by attaching a long
wire, or better, a 50Ω to 200Ω transformer and a lowpass-
filter to the In-phase ADC input (pin 1 or 2 of the RTL2832,
whereas pin 1 is at the molded dot) it is possible to listen to
shortwave radio stations. The coupling capacitors can be
left in place, but for better results they should be removed.
Tuning in this mode is done with the DDC, and since the
ADC samples with 28.8 MHz, tuning is possible from 0 to
28.8 MHz.
Signed-off-by: Steve Markgraf <steve@steve-m.de>
12 years ago
5a26bd51e7
add initial support for the R820T tuner
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Signed-off-by: Steve Markgraf <steve@steve-m.de>
12 years ago
88cd4b33cf
return RTLSDR_TUNER_UNKNOWN (0) on failure of rtlsdr_get_tuner_type
13 years ago
f9b5d7b0a6
apply frequency correction value on the xtal clock directly
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by using this approach both, the tuning frequency and the sample rate
should be corrected at the same time.
13 years ago
f3cf83e3d7
disable DAGC by default, add control function
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This adds rtlsdr_set_agc_mode() to enable/disable it.
Thanks to Leif Asbrink for finding this setting.
Signed-off-by: Steve Markgraf <steve@steve-m.de>
13 years ago
6ea029d92c
add api function to control the IF gain for E4000 tuners
13 years ago
7bd3933c41
introduce getters for tuner parameters (gain, type)
13 years ago
505f40d9a0
introduce api function to read usb string descriptors
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This API allows to read manufacturer and product names as well as the
serial number advertized by the device on the bus.
13 years ago
fdc7bc978b
add an initial version of rtl_test
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This tool allows to check for lost samples (and thus check the USB
connection), as well as benchmark the Elonics E4000 tunable range.
(-t switch)
Signed-off-by: Steve Markgraf <steve@steve-m.de>
13 years ago
e9251da6e2
reset internally cached gain/freq values on setter failure
13 years ago
259e61fb17
document gain api
13 years ago
86c34428aa
use new E4000 tuner driver, allow manual gain
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Many thanks to Hoernchen for making the driver work properly
and adding manual gain!
Signed-off-by: Steve Markgraf <steve@steve-m.de>
13 years ago
bad6fb080b
introduce api to configure crystal oscillator frequency
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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
13 years ago
5f70efd8d1
return frequency and sample rate as unsigned integers
13 years ago
e4fef23874
rtlsdr_read_async: buffer length must be multiple of 512
13 years ago
1eb1c3e191
new api: rtlsdr_read_async function allows to specify buffer size
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this commit deprecates rtlsdr_wait_async function
various small fixes are included in this commit
13 years ago
cdd6c488a3
rtlsdr_callback: use correct pointer type for buffer
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Silences a clang warning.
Signed-off-by: Steve Markgraf <steve@steve-m.de>
13 years ago
f13cf0e56c
adjust project slogan
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Signed-off-by: Steve Markgraf <steve@steve-m.de>
13 years ago
b38414c15a
add copyright notices
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Signed-off-by: Steve Markgraf <steve@steve-m.de>
13 years ago
01775f0e85
use unique libusb context per rtl
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device
this commit breaks rtlsdr_open()
interface
13 years ago
39482fee74
introduce asynchronous streaming interface
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this is an experimental feature
13 years ago
030c787cfa
cmake & autotools fixes from previous commit
13 years ago
229ebd2ff2
add win32 compatibility
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Signed-off-by: Steve Markgraf <steve@steve-m.de>
13 years ago
4c3a5f7397
consolidated function defs and impls
13 years ago
e22c8a8378
fix type definition in library
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interface
sorry mom! :P
13 years ago
9d15dc565a
handle init/exit functions calling
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automatically inside the library
13 years ago
4ad93906a4
add skeleton routines for setting tuner gain
13 years ago
001bfb96ef
add autotools based build system
13 years ago
d8da91cbc2
rework towards a library interface
13 years ago
Steve Markgraf
Dimitri Stolnikov
Hoernchen