[chirp_devel] help interpreting a hexdump

Rob Owens
Wed Jan 24 18:04:18 PST 2018


I asked what memory address stores the "Functiom Enable" feature.

In the OEM software, that checkbox is right next to the "Wireless Start"
checkbox, but I don't quite understand how they're related.  Both are in
the "Wireless Change Channel" box in the GUI.

Thanks, I know I should probably ask them for clarification and I may do
that.  But I needed a little assurance that I was asking something
reasonable.

On Wed, Jan 24, 2018 at 8:41 PM, Rhett Robinson <rrhett at gmail.com> wrote:

> What was the question to which that was the vendor's response? I don't
> really know how to interpret that without a bit more context, sorry. Saying
> B3 refers to the third bit is plausible.
>
> On Wed, Jan 24, 2018 at 12:44 PM, Rob Owens via chirp_devel <
> chirp_devel at intrepid.danplanet.com> wrote:
>
>> Thanks.  So here's a follow-up question.  Here is the vendor's response,
>> verbatim:  "0x0187,B3:Wirelsee start,B2:function enable".  Do you suppose
>> the B3 and B2 refer to the third and second bits within the 0x0187 byte?
>> Is that typical notation?
>>
>> On Wed, Jan 24, 2018 at 2:34 PM, Rhett Robinson <rrhett at gmail.com> wrote:
>>
>>> Yes, hexdump prints each line as 16 bytes: two blocks of 8 bytes each,
>>> beginning with the address of the first byte. So, in your example:
>>> 00000180  63 ff ff ff 32 ff ec f3  f2 87 44 03 14 23 01 01
>>> |c...2.....D..#..|
>>>
>>> The first byte, 63 is at 0x180. The second byte, ff is at 0x181. The 7th
>>> byte, at address 0x187, is f3. After that it is f2 at 0x188, 87 at 0x189,
>>> 44 at 0x18a through 01 at 0x18f. So each block will be 0x???0 through
>>> 0x???f.
>>>
>>> Hope that helps!
>>>
>>> Rhett
>>>
>>> On Wed, Jan 24, 2018 at 11:13 AM, Rob Owens via chirp_devel <
>>> chirp_devel at intrepid.danplanet.com> wrote:
>>>
>>>> Here are two consecutive lines from a 'hexdump -C' of a Chirp image:
>>>>
>>>> 00000180  63 ff ff ff 32 ff ec f3  f2 87 44 03 14 23 01 01
>>>> |c...2.....D..#..|
>>>> 00000190  0f 37 1d 65 05 f0 fc d3  00 0a 0a 00 3c 00 e3 3c
>>>> |.7.e........<..<|
>>>>
>>>> Based on information from the radio vendor (Leixen), I am interested in
>>>> memory address 0x0187.
>>>> Is that the "f3" byte?
>>>>
>>>> I understand the concept of different base numbering systems, but I'm
>>>> rusty.  And I'm brand new to this Chirp driver stuff...
>>>>
>>>> -Rob
>>>>
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>>>> jects/chirp/wiki/Developers
>>>>
>>>
>>>
>>
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>>
>
>
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