Hi Alex,
On 7/20/21 11:11 AM, Alex J Lennon wrote:
Hi all,
I'm doing a bit of work with Ofono again, extending support for a Quectel EG91 -
handling additional cell strength information which seems necessary for LTE.
I'm using Quectel's AT+QCOPS which is returning some negative signal strengths
and after some investigation I've spotted that
gatresult::g_at_result_iter_next_number() doesn't handle negative numbers.
AT commands do not have a concept of negative numbers. v.250 Section 5.3.1:
<number> may be a string of one or more characters from "0" through "9"
representing a decimal
integer value. Commands that expect a <number> are noted in the description of
the command (see
clause 6).
I don't recall any other vendor using negative values in AT commands.
If you want to add a negative number parser to GAtChat, then please make it a
separate method, so that it is very clear that a vendor 'extension' is being
worked around.
Regards,
-Denis
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