18 Apr
2016
18 Apr
'16
11:07 a.m.
Thanks for reply. Comments are inline.
On 04/15/2016 07:36 PM, Holger Freyther wrote:
If I know range in advance than this step can be skipped - are there
some side effects to range_enc_determine_range() function?
What's the meaning of f0?
On 15 Apr
2016, at 12:16, Max <msuraev(a)sysmocom.de> wrote:
Hi.
How to properly use range_enc_arfcns() and range_enc_range*() from
arfcn_range_decode.h? There're not many comments around the code. From
function signature it seems like range_enc_arfcns() will put results
into w parameter but in system_information.c after that there's also
call to one of range_enc_range*().
I've tried to feed output to wireshark but it decode some unexpected
stuff. So, if I have a sequence of ints which I'd like to run through
range512 for example - ho do I get the output?
1st Determine which range to use
2nd filter out ARFCNs, e.g. if ARFCN 0 is included in
the set or not
So, range_enc_filter_arfcns() changes both arfcns and f0_included ?
3rd encode according to the range
So how do I supply input and where do I get output? The input is
previously processed arfcns parameter to range_enc_arfcn() and the
output is taken from which parameter of range_enc_range()?
does this already help?
Not entirely but we're getting there.
range = range_enc_determine_range(arfcns, arfcns_used, &f0);
if (range == ARFCN_RANGE_INVALID)
return -2;
/*
* Manipulate the ARFCN list according to the rules in J4 depending
* on the selected range.
*/
arfcns_used = range_enc_filter_arfcns(arfcns, arfcns_used,
f0, &f0_included);
memset(w, 0, sizeof(w));
rc = range_enc_arfcns(range, arfcns, arfcns_used, w, 0);
if (rc != 0)
...
switch (range) {
case ARFCN_RANGE_128:
return range_enc_range128(chan_list, f0, w);
break;
case ARFCN_RANGE_256:
--
Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/
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