osmocom-sdr September 2023

osmocom-sdr@lists.osmocom.org

2 participants
3 discussions

[PATCH] lib/xtrx: honouring/using the loglevel parameter
by Gwenhael Goavec-Merou 21 Mar '24

21 Mar '24

loglevel parameter is never used and let loglevel to DEBUG, with an annoying flood of message in terminal. This patch adds a call to xtrx_log_setlevel() at xtrx constructor level. Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou(a)trabucayre.com> --- lib/xtrx/xtrx_obj.cc | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/xtrx/xtrx_obj.cc b/lib/xtrx/xtrx_obj.cc index 016b420..ab32a7f 100644 --- a/lib/xtrx/xtrx_obj.cc +++ b/lib/xtrx/xtrx_obj.cc @@ -68,6 +68,8 @@ xtrx_obj::xtrx_obj(const std::string &path, unsigned loglevel, bool lmsreset) unsigned xtrxflag = (loglevel & XTRX_O_LOGLVL_MASK) | ((lmsreset) ? XTRX_O_RESET : 0); std::cerr << "xtrx_obj::xtrx_obj = " << xtrxflag << std::endl; + xtrx_log_setlevel(loglevel, NULL); + int res = xtrx_open_string(path.c_str(), &_obj); if (res < 0) { std::stringstream message; -- 2.40.1

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MS9120 USB VGA dongle
by Niklas Cathor 03 Nov '23

03 Nov '23

After seeing the osmo-fl2k[1] project, I've bought a USB VGA dongle, hoping it would contain a FL2000. The model I've bought looks identical (from the outside) to the black one on the picture. Unfortunately it contains a different chip: a Macrosilicon MS9120. There is not a lot of information about this chip, the manufacturer does not even publish a datasheet (I've sent them an email to ask for one, but don't have high hopes). What I've found so far is: - someone's reverse-engineering attempt of the android driver[2] - a bit of python code to read & write the chip's memory[3] The second thing is for a different chip by the same manufacturer, but it seems to work with my device as well. So, I was wondering if anyone here has already attempted to re-purpose this chip as a transmitter :) cheers, - niklas [1] https://osmocom.org/projects/osmo-fl2k/wiki [2] https://github.com/animaone/macrosilicon_reverse_engineering_journey/ [3] https://github.com/hwti/ms210x-tools

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[PATCH] RTL-SDR Blog V4 Upconverter GPIO Switch
by Carl Laufer 20 Sep '23

20 Sep '23

In future blog v4 production batches (out in several months time), it will be possible to turn off the upconverter when tuned outside of the HF bands. Please add the code to control the GPIOs to turn off the upconverter when it is not in use. diff --git a/src/tuner_r82xx.c b/src/tuner_r82xx.c index 1510fc3..38d4802 100644 --- a/src/tuner_r82xx.c +++ b/src/tuner_r82xx.c @@ -1151,6 +1151,12 @@ int r82xx_set_freq(struct r82xx_priv *priv, uint32_t freq) cable_2_in = (band == HF) ? 0x08 : 0x00; rc = r82xx_write_reg_mask(priv, 0x06, cable_2_in, 0x08); + if (rc < 0) + goto err; + + /* Control upconverter GPIO switch on newer batches */ + rc = rtlsdr_set_bias_tee_gpio(priv->rtl_dev, 5, !cable_2_in); + if (rc < 0) goto err; Regards, Carl

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osmocom-sdr September 2023