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From: Denis Kenzior <denkenz@gmail.com>
To: ofono@ofono.org
Subject: Re: Bug/Oversight in gatchat/gatresult.c with negative numbers
Date: Tue, 03 Aug 2021 09:28:07 -0500	[thread overview]
Message-ID: <70bd0c15-0fe5-59ea-f619-54dadd35e586@gmail.com> (raw)
In-Reply-To: <e74bf986-cc91-287b-9c6b-83d7804333a7@dynamicdevices.co.uk>

[-- Attachment #1: Type: text/plain, Size: 874 bytes --]

Hi Alex,

> I have been chasing this up with Quectel and they tell me this the correct 
> implementation.
> 
> "QCOPS and QENG command show the RSSI、RSRP and SINR value of the network, this 
> is in accordance with the 3GPP TS regulations, so it is normal for negative 
> numbers to be displayed.image"


So the image shows the value for <rsrp>

'0' if -140 dbm
...
'95' if dbm is -46 to -45
etc.

<rsrp> (what is actually sent over AT commands) is never negative. Isn't the 
image supporting my earlier assertion:  'AT commands do not have a concept of 
negative numbers'?

oFono exposes the <rsrp> value from 3GPP:

"byte ReferenceSignalReceivedPower [optional, lte]

         Contains the Reference Signal Received Power.  Valid range of values
         is 0-97. Refer to <rsrp> in 27.007, Section 8.69 for more details.
"

Regards,
-Denis

  reply	other threads:[~2021-08-03 14:28 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-20 16:11 Bug/Oversight in gatchat/gatresult.c with negative numbers Alex J Lennon
2021-07-27 14:38 ` Denis Kenzior
2021-07-27 15:02   ` Alex J Lennon
2021-08-03  9:48   ` Alex J Lennon
2021-08-03 14:28     ` Denis Kenzior [this message]
2021-08-03 14:45       ` Alex J Lennon
2021-08-06  9:31       ` Alex J Lennon
2021-08-06 14:06       ` Alex J Lennon
2021-08-06 14:20         ` Denis Kenzior
2021-08-06 14:28           ` Alex J Lennon
2021-08-06 14:44             ` Denis Kenzior
2021-08-06 14:49               ` Alex J Lennon
2021-08-06 15:02                 ` Denis Kenzior
2021-08-09  6:40                   ` Martin =?unknown-8bit?q?Hundeb=C3=B8ll?=

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