Hi Jan
I solved the problem. This was due to the fact of including
PANDescriptorListNumEntries and PANDescriptorList variables when the MLME_SCAN
is requested. I've not dedicated time in examining this problem more in detail,
which a priori, I thing this should not occur. But you are the developer so I
ber there is a reason.
Thanks
David
> Date: Thu, 21 Feb 2013 12:25:35 +0100
> Subject: Re: [Tinyos-help] TKN154: Energy detection scan
> From: ha...@tkn.tu-berlin.de
> To: drod...@outlook.com
> CC: tinyos-help@millennium.berkeley.edu
>
> Hi David,
>
> MLME_SCAN.request() returns a parameter ieee154_status_t, can you take
> a look at its value to check whether it is IEEE154_SUCCESS (only in
> this case the confirm event will be signalled).
>
> Jan
>
> On Thu, Feb 21, 2013 at 11:31 AM, David Rodenas <drod...@outlook.com> wrote:
> > Hi all
> >
> > I have an issue with TKN154 implementation of the IEEE 802.15.4 standard. I
> > am trying to perform an energy detection scan with a PAN coordinator device
> > over four pre-defined channels (e.g., 16, 19, 21, and 26) for later, select
> > the one which best fits some application requirements. The problem arises
> > when the command MLME_SCAN.request is called. It seems to me that the
> > proccess regarding this kind of scan falls in a blocked state because the
> > event MLME_SCAN.confirm is never issued. Here there is part of the code I am
> > using:
> >
> > -----------------------------------
> > implementation {
> > void function_1()
> > {
> > ieee154_PANDescriptor_t m_PANDescriptor[4];
> > int8_t EDList [4];
> > ieee154_phyChannelsSupported_t ScanChannels = 0;
> >
> > ScanChannels += ((uint32_t) 1) << 16; // CH 1
> > ScanChannels += ((uint32_t) 1) << 19; // CH 2
> > ScanChannels += ((uint32_t) 1) << 21; // CH 3
> > ScanChannels += ((uint32_t) 1) << 26; // CH 4
> >
> > call MLME_SCAN.request (ENERGY_DETECTION_SCAN, // ScanType
> > ScanChannels, // ScanChannels
> > 5, // ScanDuration
> > 0x00, // ChannelPage
> > 4, // EnergyDetectListNumEntries
> > EDList, // EnergyDetectList
> > 4, // PANDescriptorListNumEntries
> > m_PANDescriptor, // PANDescriptorList
> > 0 // security
> > );
> > }
> >
> > event void MLME_SCAN.confirm (
> > ieee154_status_t status,
> > uint8_t ScanType,
> > uint8_t ChannelPage,
> > uint32_t UnscannedChannels,
> > uint8_t EnergyDetectListNumEntries,
> > int8_t* EnergyDetectList,
> > uint8_t PANDescriptorListNumEntries,
> > ieee154_PANDescriptor_t* PANDescriptorList)
> > {
> > // It is never issued
> > call Leds.Led0On();
> > }
> > }
> > -----------------------------------
> >
> > I appreciate all the help possible.
> >
> > Regards,
> >
> > David
> >
> > _______________________________________________
> > Tinyos-help mailing list
> > Tinyos-help@millennium.berkeley.edu
> > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
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