Re: [Tinyos-help] Reading the usb port without the java Listen (what is the byte RSSI)
Hi,
I want to copy the message header into payload by creating my own payload
format
This is the Msg format I like to transmit
typedef nx_struct Msg
{
nx_uint16_t hdr;
ieee154_header_t header_t;
nx_uint16_t val;
nx_uint16_t type;
}Msg;
And in the implementation part I tried 3 different
Msg* btrpkt = (Msg*)(call Packet.getPayload(pkt, sizeof(Msg)));
btrpkt-header_t=getheader(btrpkt);
or
btrpkt-header=ieee154_header_t;
or
btrpkt-header_t.fcf=getFCF(btrpkt);
I need to do copy the header of the data into payload
--
SAI MANOJ P D (M.Tech)
International Institute of Information Technology,Bangalore
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Re: [Tinyos-help] Reading the usb port without the java Listen (what is the byte RSSI)
The message header, kinda by definition, is at the beginning of
the message packet before the payload. So trying to get the
header out of the payload is a non-starter... There may be a
Packet.getHeader() or some such method -- I don't use that
module so I don't know. Or you could probably get away with
a cast and structure copy like this:
btrpkt-header = (ieee154_header_t) pkt;
I'm not sure what pkt is usually it would already
be a pointer passed in to your function from the message
receive code, so the '' may be superfluous.
MS
sai manoj wrote:
Hi,
I want to copy the message header into payload by creating my own
payload format
This is the Msg format I like to transmit
typedef nx_struct Msg
{
nx_uint16_t hdr;
ieee154_header_t header_t;
nx_uint16_t val;
nx_uint16_t type;
}Msg;
And in the implementation part I tried 3 different
Msg* btrpkt = (Msg*)(call Packet.getPayload(pkt, sizeof(Msg)));
btrpkt-header_t=getheader(btrpkt);
or
btrpkt-header=ieee154_header_t;
or
btrpkt-header_t.fcf=getFCF(btrpkt);
I need to do copy the header of the data into payload
--
SAI MANOJ P D (M.Tech)
International Institute of Information Technology,Bangalore
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Re: [Tinyos-help] Reading the usb port without the java Listen (what is the byte RSSI)
One of the features of the Mote-PC communication is that the RSSI value is not included... On one hand it makes sense because that channel doesn't have a radio strength, but on the other, it causes lots of grief because folks want to see the strength of the signal received at the base-station, which is I presume what you are trying to do. The age-old solution was to reserve a spot in your messages and modify the base-station code to stuff its RSSI into that slot. MS Jorge R. Beingolea G. wrote: Hi all, I'm working on an application to process the Telosb, using Oscilloscope application. I started by collecting and reading data through the USB port, and realized that the process of reading directly from USB port, without the use of command java Listen, 2 bytes are added to the beginning of the frame and 3 to end. In the package (Oscilloscope application = 36 bytes), I could not identify any byte that corresponds to the RSSI. What I wonder is if some of the additional bytes (2 before and 3 bytes at end) may be of RSSI and are abstracted when using the command java Listen could you help me? Jorge ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] Reading the usb port without the java Listen (what is the byte RSSI)
Hi Michael, There is no other way? in my case only installed the application of the oscilloscope, but I'm reading directly from the USB port without the aid of some other application like: MOTE-PC or java Listen. when I read the USB port have a few additional bytes, I thought some of them could be the RSSI? you have any idea how can I include the RSSI in the frame? Thanks.. Jorge Em 11/3/2011 5:21 PM, Michael Schippling escreveu: One of the features of the Mote-PC communication is that the RSSI value is not included... On one hand it makes sense because that channel doesn't have a radio strength, but on the other, it causes lots of grief because folks want to see the strength of the signal received at the base-station, which is I presume what you are trying to do. The age-old solution was to reserve a spot in your messages and modify the base-station code to stuff its RSSI into that slot. MS Jorge R. Beingolea G. wrote: Hi all, I'm working on an application to process the Telosb, using Oscilloscope application. I started by collecting and reading data through the USB port, and realized that the process of reading directly from USB port, without the use of command java Listen, 2 bytes are added to the beginning of the frame and 3 to end. In the package (Oscilloscope application = 36 bytes), I could not identify any byte that corresponds to the RSSI. What I wonder is if some of the additional bytes (2 before and 3 bytes at end) may be of RSSI and are abstracted when using the command java Listen could you help me? Jorge ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] Reading the usb port without the java Listen (what is the byte RSSI)
Sorry, that was the extent of my ideas... maybe someone smarter and more up-to-date has some better ones. MS Jorge R. Beingolea G. wrote: Hi Michael, There is no other way? in my case only installed the application of the oscilloscope, but I'm reading directly from the USB port without the aid of some other application like: MOTE-PC or java Listen. when I read the USB port have a few additional bytes, I thought some of them could be the RSSI? you have any idea how can I include the RSSI in the frame? Thanks.. Jorge Em 11/3/2011 5:21 PM, Michael Schippling escreveu: One of the features of the Mote-PC communication is that the RSSI value is not included... On one hand it makes sense because that channel doesn't have a radio strength, but on the other, it causes lots of grief because folks want to see the strength of the signal received at the base-station, which is I presume what you are trying to do. The age-old solution was to reserve a spot in your messages and modify the base-station code to stuff its RSSI into that slot. MS Jorge R. Beingolea G. wrote: Hi all, I'm working on an application to process the Telosb, using Oscilloscope application. I started by collecting and reading data through the USB port, and realized that the process of reading directly from USB port, without the use of command java Listen, 2 bytes are added to the beginning of the frame and 3 to end. In the package (Oscilloscope application = 36 bytes), I could not identify any byte that corresponds to the RSSI. What I wonder is if some of the additional bytes (2 before and 3 bytes at end) may be of RSSI and are abstracted when using the command java Listen could you help me? Jorge ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help ___ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
