I'm making a a2d sensorboard for my ecosens1 platform, a telosb variant, and
want to put two reads of a MSP430 multichannel a2d into one packet to send
out.
I had just one task to send a message and now want to break that into two.
The near term method I am looking for is how to use the rmspkt pointer
as global?
Then after that, pkt is already a global... I'm still confused some about that
line of code defining rmspkt. Please correct me if this has errors:
As I understand it, rmspkt is pointer of type defined in .h file as struct
MoistureSensorsMsg*, and so, when you access the struct elements with
rmspkt->adc00, you change data that pkt points to also, right?
So, if rmspkt was global, I could use it in another task... which seems like a
good way at the moment...
else should I do another whole line of code such as:
MoistureSensorsMsg* rmspkt2 = (MoistureSensorsMsg*) (call
AMSend.getPayload(&pkt, pktlen));
in the MoistureSensorsMsgBank2() task?
=============================
task void MoistureSensorsMsgBank1()
{
//09dec07jg //cast result of .getPayload to pointer rmspkt.
MoistureSensorsMsg* rmspkt = (MoistureSensorsMsg*) (call
AMSend.getPayload(&pkt, pktlen));
rmspkt->nodeid = TOS_NODEID;
rmspkt->timestamp = timestamp;
//assign buffer[] elements to rmspkt nx_struct elements.
atomic
{
rmspkt->adc00 = buffer[0];
rmspkt->adc01 = buffer[1];
rmspkt->adc02 = buffer[2];
rmspkt->adc03 = buffer[3];
rmspkt->adc04 = buffer[4];
rmspkt->adc05 = buffer[5];
}
//rmspkt struct is now filled with new bank1 data.
}
==============================
Thanks,
John Griessen
--
Ecosensory
tinyOS devel on: ubuntu Linux; tinyOS v2.0.2; telosb ecosens1
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