Have a look at the CC1000RadioIntM.nc file in /tos/platform/mica2. The
squelch is continuously varied by measuring the signal strength when the
radio is idle. The current squelch values is called usSquelchVal. This
is calculated using a squelch table (usSquelchTable).
When transmitting the program waits a random delay time (sMacDelay).
Everytime a byte is received from the radio an interrupt occurs. If this
byte is rubbish and a transmit it pending then it decrements sMacDelay
until it is 0. When this occurs then it tries to transmit by checking
that the signal strength is low enough (less than squelch) before
transmitting.
I hope this helps.
Simon
primalfear 69 wrote:
hello everybody..........
why and for what is Squelch term or variable is used in CC1000?
i have a similar doubt in case of macdelay......... (i guess mac delay
is used in order to transmit another data when it has already sent
one). if am wrong please correct me. and could anyone get me some help
regarding the interrupts........ in general.
Regards
Primalfear
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