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runaway picpac on decode   Message List  
Reply | Forward Message #478 of 681 |
Re: [picpac] Re: runaway picpac on decode

Thanks for uploading that. I'll try to look at it soon and report my
findings.

The only resources on the PICPAC are the docs and sample code. There
are lots of web resources on PIC development, both in C and ASM.

Byon

On 8/9/2006 11:33 PM, hallmorg wrote:
> Hi Byon,
>
> Good idea on recording the audio.
>
> I fed the radio in to my PC and recorded over an hour worth of
> traffic. I then used Audacity to condense it down to about 3 minutes
> worth of transmissions only a few seconds apart.
>
> I get decode problems at roughly the following times in the audio file:
>
> 0:22, 1:01, 1:53, 2:48, 3:23.
>
> I created a folder in the files section. z_decode_debug_files
>
> This folder contains 2 files:
> 8-9b-06.txt which is the text capture from hyperterm from my PicPac
> when running the audio file through it.
> File #2 is "condensed aprs.mp3" which is roughly an hour of traffic
> condensed to a few minutes.
>
> The mp3 seemed to work fine although I have the raw audio which I
> could grab snippets of the "broken" packets.
>
> I sure appreciate any effort to understand what is going on and what
> might be done to resolve it.
>
> As an aside, do you have any web resources on programming the PicPac?
> I took a quick look at the code. It's been over 5 years since I
> coded anything in assembly and that was only a class in school. Any
> resources for emulators or other useful tidbits are appreciated.
>
> I'd hate to be asking for help that I wouldn't be willing to try and
> understand myself.
>
> Thanks,
>
> Morgan
>
>
>
>
> --- In picpac@yahoogroups.com, Byon Garrabrant <byon@...> wrote:
>> You could also just capture audio for 20 minutes, and then feed it to
>> the PICPAC and see if you have a bad packet. No splitter needed in
> that
>> case.
>>
>> Byon
>>
>> On 8/8/2006 7:55 AM, hallmorg wrote:
>>> Thanks for a quick response.
>>>
>>> It varies in frequency, but it's happening every 10 minutes or less.
>>> This morning it was happening every couple of minutes. It just seems
>>> to be dependent on the amount of traffic. I'll try to buy/make a
>>> splitter to record the audio and at least provide you with something
>>> to debug with.
>>>
>>> Morgan
>>>
>>>
>>>
>>> --- In picpac@yahoogroups.com, Byon Garrabrant <byon@> wrote:
>>>> I'm sure there is. How often does it happen. Perhaps you can try
>>>> capturing audio with a sound card at the same time. When it
> fails, you
>>>> will be able to replay the failure, and send it to me to study.
>>>>
>>>> Byon
>>>>
>>>> On 8/7/2006 9:49 PM, hallmorg wrote:
>>>>> Hi,
>>>>>
>>>>> I'm using a picpac to decode APRS packets using the Decode1 code
> from
>>>>> the Files section. It's doing a reasonably good job of grabbing
>>>>> packets, but it occasionally runs away on a scrambled decode. From
>>>>> the looks of the data, it is usually a weather packet.
> Unfortunately,
>>>>> I can't tell from whom.
>>>>>
>>>>> Is there something that can be done about this? The main problem
>>>>> seems to be that once it gets a bad packet, it seems to get stuck in
>>>>> an endless loop until I reset it.
>>>>>
>>>>> Any thoughts on this?
>>>>>
>>>>> What other information would help diagnose the problem?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Morgan
>>>>> ke6bfh
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Yahoo! Groups Links
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Yahoo! Groups Links
>>>
>>>
>>>
>>>
>>>
>>>
>
>
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Thu Aug 10, 2006 6:44 pm

n6bg
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Message #478 of 681 |
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Hi, I'm using a picpac to decode APRS packets using the Decode1 code from the Files section. It's doing a reasonably good job of grabbing packets, but it...
hallmorg
Offline Send Email
Aug 8, 2006
4:49 am

I'm sure there is. How often does it happen. Perhaps you can try capturing audio with a sound card at the same time. When it fails, you will be able to...
Byon Garrabrant
n6bg
Online Now Send Email
Aug 8, 2006
4:55 am

Thanks for a quick response. It varies in frequency, but it's happening every 10 minutes or less. This morning it was happening every couple of minutes. It...
hallmorg
Offline Send Email
Aug 8, 2006
2:56 pm

You could also just capture audio for 20 minutes, and then feed it to the PICPAC and see if you have a bad packet. No splitter needed in that case. Byon...
Byon Garrabrant
n6bg
Online Now Send Email
Aug 9, 2006
9:07 pm

Hi Byon, Good idea on recording the audio. I fed the radio in to my PC and recorded over an hour worth of traffic. I then used Audacity to condense it down to...
hallmorg
Offline Send Email
Aug 10, 2006
6:38 am

Thanks for uploading that. I'll try to look at it soon and report my findings. The only resources on the PICPAC are the docs and sample code. There are lots...
Byon Garrabrant
n6bg
Online Now Send Email
Aug 10, 2006
6:44 pm

Morgan, I downloaded your MP3 file, and fed it into a PICPAC running decode1 from http://www.byonics.com/picpac/picpac.zip and it decode the file without...
Byon Garrabrant
n6bg
Online Now Send Email
Aug 14, 2006
5:13 am

Byon, thanks for giving it a try. I'll check the date of the decode1.hex file. I think it was 5-10-03, but I will double check. Mine definitely goes nuts at...
hallmorg
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Aug 14, 2006
3:40 pm
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