RTL2832U on Raspberry Pi

András Retzler retzlerandras at gmail.com
Mon Dec 23 21:10:10 UTC 2013


Hello,

It's great that it's solved.

Sorry, I've already tried to rmmod that module on my Pi, and it didn't
freeze.
Anyway, sometimes replugging the device has frozen my desktop PC (maybe
while loading the corresponding module).

73!

Andras, HA7ILM


2013/12/23 IZ8MBW Fabio <iz8mbw at yahoo.it>

> Hi.
> Now it works!!!
> The procedure is to:
>
> 1. add the line:  blacklist dvb_usb_rtl28xxu  into the
> file /etc/modprobe.d/raspi-blacklist.conf
> 2. reboot
>
> Many thanks!
>
> A question: there is a way to start "rtp_tcp" in silent mode (without
> messages on the terminal)?
> Thanks!
>
>
> 73
> Fabio, IZ8MBW
> www.iz8mbw.net
>
>
>   ------------------------------
>  *Da:* András Retzler <retzlerandras at gmail.com>
> *A:* IZ8MBW Fabio <iz8mbw at yahoo.it>; osmocom-sdr at lists.osmocom.org
> *Inviato:* Lunedì 23 Dicembre 2013 13:46
> *Oggetto:* Re: RTL2832U on Raspberry Pi
>
> Hi Fabio,
>
> I think you should run the following before running any rtl_* commands:
> sudo rmmod dvb_usb_rtl28xxu
>
> You may also blacklist the dvb_usb_rtl28xxu kernel module, so it won't
> load when you plug in the RTL device.
>
> 73!
>
> Andras, HA7ILM
>
>
>
>  2013/12/23 IZ8MBW Fabio <iz8mbw at yahoo.it>
>
> Hi.
> I'm trying to install OSMOSdr on a Raspberry Pi.
> I'm following this guide:
> http://www.hamradioscience.com/raspberry-pi-as-remote-server-for-rtl2832u-sdr/
>
> After installing I try to test the RTL2832 USB SDR but I have this error:
>
> root at raspberrypi:~/rtl2832/rtl-sdr/build# rtl_test
> Found 1 device(s):
>   0:  Generic RTL2832U OEM
>
> Using device 0: Generic RTL2832U OEM
>
> Kernel driver is active, or device is claimed by second instance of
> librtlsdr.
> In the first case, please either detach or blacklist the kernel module
> (dvb_usb_rtl28xxu), or enable automatic detaching at compile time.
>
> usb_claim_interface error -6
> Failed to open rtlsdr device #0.
>
>
> This is my lsmod:
>
> root at raspberrypi:~# lsmod
> Module                  Size  Used by
> tun                    18459  2
> i2c_dev                 5557  0
> w1_therm                2921  0
> w1_gpio                 2363  0
> wire                   24832  2 w1_gpio,w1_therm
> cn                      4783  1 wire
> snd_bcm2835            16165  0
> evdev                   9419  1
> r820t                  16279  1
> rtl2832                 8020  1
> snd_soc_bcm2708_i2s     5474  0
> regmap_mmio             2806  1 snd_soc_bcm2708_i2s
> dvb_usb_rtl28xxu       14333  0
> dvb_usb_v2             14860  1 dvb_usb_rtl28xxu
> rc_core                16313  3 dvb_usb_rtl28xxu,dvb_usb_v2
> rtl2830                 7378  1 dvb_usb_rtl28xxu
> snd_soc_core          131268  1 snd_soc_bcm2708_i2s
> dvb_core               92797  3 rtl2830,rtl2832,dvb_usb_v2
> regmap_spi              1897  1 snd_soc_core
> snd_pcm                81593  2 snd_bcm2835,snd_soc_core
> snd_page_alloc          5156  1 snd_pcm
> regmap_i2c              1645  1 snd_soc_core
> snd_compress            8076  1 snd_soc_core
> snd_seq                53769  0
> snd_timer              20133  2 snd_pcm,snd_seq
> snd_seq_device          6473  1 snd_seq
> leds_gpio               2059  0
> led_class               3688  1 leds_gpio
> snd                    61291  7
> snd_bcm2835,snd_soc_core,snd_timer,snd_pcm,snd_seq,snd_seq_device,snd_compress
> i2c_bcm2708             3949  0
>
>
> This is a portion of /var/log/messages
>
> .
> .
> .
> Dec 23 13:15:06 raspberrypi kernel: [    2.369348] usb 1-1: new high-speed
> USB device number 2 using dwc_otg
> Dec 23 13:15:06 raspberrypi kernel: [    2.377867] Indeed it is in host
> mode hprt0 = 00001101
> Dec 23 13:15:06 raspberrypi kernel: [    2.387121] devtmpfs: mounted
> Dec 23 13:15:06 raspberrypi kernel: [    2.399736] Freeing unused kernel
> memory: 144K (c0572000 - c0596000)
> Dec 23 13:15:06 raspberrypi kernel: [    2.590087] usb 1-1: New USB device
> found, idVendor=0424, idProduct=9512
> Dec 23 13:15:06 raspberrypi kernel: [    2.599431] usb 1-1: New USB device
> strings: Mfr=0, Product=0, SerialNumber=0
> Dec 23 13:15:06 raspberrypi kernel: [    2.609377] hub 1-1:1.0: USB hub
> found
> Dec 23 13:15:06 raspberrypi kernel: [    2.615786] hub 1-1:1.0: 3 ports
> detected
> Dec 23 13:15:06 raspberrypi kernel: [    2.899604] usb 1-1.1: new
> high-speed USB device number 3 using dwc_otg
> Dec 23 13:15:06 raspberrypi kernel: [    3.009979] usb 1-1.1: New USB
> device found, idVendor=0424, idProduct=ec00
> Dec 23 13:15:06 raspberrypi kernel: [    3.018605] usb 1-1.1: New USB
> device strings: Mfr=0, Product=0, SerialNumber=0
> Dec 23 13:15:06 raspberrypi kernel: [    3.047105] smsc95xx v1.0.4
> Dec 23 13:15:06 raspberrypi kernel: [    3.124437] smsc95xx 1-1.1:1.0
> eth0: register 'smsc95xx' at usb-bcm2708_usb-1.1, smsc95xx USB 2.0
> Ethernet, b8:27:eb:30:43:fd
> Dec 23 13:15:06 raspberrypi kernel: [    3.229549] usb 1-1.3: new
> high-speed USB device number 4 using dwc_otg
> Dec 23 13:15:06 raspberrypi kernel: [    3.352535] usb 1-1.3: New USB
> device found, idVendor=0bda, idProduct=2838
> Dec 23 13:15:06 raspberrypi kernel: [    3.365766] usb 1-1.3: New USB
> device strings: Mfr=1, Product=2, SerialNumber=3
> Dec 23 13:15:06 raspberrypi kernel: [    3.375070] usb 1-1.3: Product:
> RTL2838UHIDIR
> Dec 23 13:15:06 raspberrypi kernel: [    3.381218] usb 1-1.3:
> Manufacturer: Realtek
> Dec 23 13:15:06 raspberrypi kernel: [    3.391654] usb 1-1.3:
> SerialNumber: 00000001
> Dec 23 13:15:06 raspberrypi kernel: [    5.123693]
> bcm2708_i2c_init_pinmode(0,0)
> Dec 23 13:15:06 raspberrypi kernel: [    5.249498]
> bcm2708_i2c_init_pinmode(0,1)
> Dec 23 13:15:06 raspberrypi kernel: [    5.255625] bcm2708_i2c
> bcm2708_i2c.0: BSC0 Controller at 0x20205000 (irq 79) (baudrate 100k)
> Dec 23 13:15:06 raspberrypi kernel: [    5.468627]
> bcm2708_i2c_init_pinmode(1,2)
> Dec 23 13:15:06 raspberrypi kernel: [    5.545257]
> bcm2708_i2c_init_pinmode(1,3)
> Dec 23 13:15:06 raspberrypi kernel: [    5.614064] bcm2708_i2c
> bcm2708_i2c.1: BSC1 Controller at 0x20804000 (irq 79) (baudrate 100k)
> Dec 23 13:15:06 raspberrypi kernel: [    6.451707] usb 1-1.3: dvb_usb_v2:
> found a 'Realtek RTL2832U reference design' in warm state
> Dec 23 13:15:06 raspberrypi kernel: [    6.510309] usbcore: registered new
> interface driver dvb_usb_rtl28xxu
> Dec 23 13:15:06 raspberrypi kernel: [    6.552127] usb 1-1.3: dvb_usb_v2:
> will pass the complete MPEG2 transport stream to the software demuxer
> Dec 23 13:15:06 raspberrypi kernel: [    6.575184] DVB: registering new
> adapter (Realtek RTL2832U reference design)
> Dec 23 13:15:06 raspberrypi kernel: [    6.614879] bcm2708-i2s
> bcm2708-i2s.0: Failed to create debugfs directory
> Dec 23 13:15:06 raspberrypi kernel: [    6.639092] usb 1-1.3: DVB:
> registering adapter 0 frontend 0 (Realtek RTL2832 (DVB-T))...
> Dec 23 13:15:06 raspberrypi kernel: [    6.693199] r820t 2-001a: creating
> new instance
> Dec 23 13:15:06 raspberrypi kernel: [    6.721703] r820t 2-001a: Rafael
> Micro r820t successfully identified
> Dec 23 13:15:06 raspberrypi kernel: [    6.744416] Registered IR keymap
> rc-empty
> Dec 23 13:15:06 raspberrypi kernel: [    6.755520] input: Realtek RTL2832U
> reference design as
> /devices/platform/bcm2708_usb/usb1/1-1/1-1.3/rc/rc0/input0
> Dec 23 13:15:06 raspberrypi kernel: [    6.785036] rc0: Realtek RTL2832U
> reference design as /devices/platform/bcm2708_usb/usb1/1-1/1-1.3/rc/rc0
> Dec 23 13:15:06 raspberrypi kernel: [    6.808934] usb 1-1.3: dvb_usb_v2:
> schedule remote query interval to 400 msecs
> Dec 23 13:15:06 raspberrypi kernel: [    6.840041] usb 1-1.3: dvb_usb_v2:
> 'Realtek RTL2832U reference design' successfully initialized and connected
> Dec 23 13:15:06 raspberrypi kernel: [   10.489768] EXT4-fs (mmcblk0p2):
> re-mounted. Opts: (null)
> Dec 23 13:15:06 raspberrypi kernel: [   10.929880] EXT4-fs (mmcblk0p2):
> re-mounted. Opts: (null)
> .
> .
> .
>
> Any idea to how to solve?
> Many thanks!!
>
>
> 73
> Fabio, IZ8MBW
> www.iz8mbw.net
>
>
>
>
>
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