osmocom-sdr July 2019

osmocom-sdr@lists.osmocom.org

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7 discussions

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gr-osmosdr: add clock_source= parameter
by Michael Loeffler 26 Mar '21

26 Mar '21

Hello, the attached patch allows to set the clock_source on uhd devices in programs like gqrx. Bye

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rtl_tcp update
by Richard Frye 29 Jul '19

29 Jul '19

I have enabled the direct sampling option to the rtl_tcp. I would like to submit it as a PR but I need authorization. How do we get authorization? Thanks, Richard Frye

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Re: usbfs zerocopy broken on ARM/ARM64
by Nuno Gonçalves 25 Jul '19

25 Jul '19

Dear Steve, Could you give a note if there is still work in progress for a linux fix? I noticed I am affected by this on 5.2, and the last message I find about this is yours on the arm-kernel list dating back to 9 Nov 2018. Thanks, Nuno

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[PATCH] contrib/jenkins.sh: osmo-fl2k build verification
by Oliver Smith 24 Jul '19

24 Jul '19

Related: OS#3203 Signed-off-by: Oliver Smith <osmith(a)sysmocom.de> --- contrib/jenkins.sh | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100755 contrib/jenkins.sh diff --git a/contrib/jenkins.sh b/contrib/jenkins.sh new file mode 100755 index 0000000..8c3b1cf --- /dev/null +++ b/contrib/jenkins.sh @@ -0,0 +1,18 @@ +#!/bin/sh -ex +# This is how we build on jenkins.osmocom.org. + +CFLAGS="-Werror" + +if ! [ -x "$(command -v osmo-clean-workspace.sh)" ]; then + echo "Error: We need to have scripts/osmo-clean-workspace.sh from osmo-ci.git in PATH!" + exit 2 +fi + +osmo-clean-workspace.sh +cmake \ + -DINSTALL_UDEV_RULES=ON \ + -DCMAKE_C_FLAGS="$CFLAGS" \ + . +make $PARALLEL_MAKE +make DESTDIR="_install" install +osmo-clean-workspace.sh -- 2.11.0

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Receiving UTAs on 978 Mhz
by Yaron Haddi 22 Jul '19

22 Jul '19

2 5

ADS-B reed-solomon ?
by Brad Walker 20 Jul '19

20 Jul '19

I've been studying the rtl_adsb.c code and it's very interesting how it works.. But, I have question. I noticed that if I request verbose output using the "-V" option, then the CRC is printed out. But, it doesn't look like the code actually does any Reed-Soloman error correction to the data the ADS-B specification documents. Am I reading this correctly? Thanks. -brad w.

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Patch submission
by Vincent Perrier 12 Jul '19

12 Jul '19

Fix memory leak in librtlsdr. The problem came up when using rtlsdr_open() twice with the same index. The variable dev->devh is never cleaned if libusb_claim_interface() fails. This causes a leak if the device is already claimed by another handle. rtlsdr_close() did not free that space since the returned handle is invalid if libusb_claim_interface fails Here is the patch file in text format. (it is also joined to this email). ~~~~ diff --git a/src/librtlsdr.c b/src/librtlsdr.c index a71609b..89ec903 100644 --- a/src/librtlsdr.c +++ b/src/librtlsdr.c @@ -1520,10 +1520,6 @@ int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index) r = libusb_claim_interface(dev->devh, 0); if (r < 0) { fprintf(stderr, "usb_claim_interface error %d\n", r); - if (dev) - { - libusb_close(dev->devh); - } goto err; } ~~~~ -Vincent Perrier

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osmocom-sdr July 2019