Moikka!
On 05/15/2015 12:25 PM, Hans Verkuil wrote:
Hi Antti,
Looks good, but the DocBook updates are missing. You probably planned to do
that in
RFCv2 or similar.
Yep, first code then doc.
Which device will have sdr_out? What's the cheapest device and where can I buy
it? I'd
like to be able to test it (and add qv4l2 support),
I used HackRF One, it is likely 150-250e used one.
Currently I have implemented almost all radio features it has, only
option to enable antenna power supply is missing (and firmware upgrade,
but it is not radio feature).
Device is half-duplex - only RX or TX could be used at the time. Driver
creates two device nodes, one for receiver and another for transmitter.
There is:
2 x struct video_device
2 x struct v4l2_device
2 x struct vb2_queue
2 x struct v4l2_ctrl_handler
Locking is still missing. I am not sure how it should be done, but
likely I try add lock to start/stop streaming. When start streaming is
called it sets some flag/lock and if another device node tries start
streaming at same time error is returned.
Device uses Complex S8 format for both receiver and transmitter. I will
add that format to vivid and then it should be possible generate beep
using vivid and transmit it using HackRF (cat /dev/swradio0 >
/dev/swradio1), where swradio0 is vivid and swradio1 is HackRF.
regards
Antti
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http://palosaari.fi/
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