| Table of Contents |
|---|
The following image is a one-page chronogram of the IEEE802.15.4e state machine.
...
Triggered by #rt1 expiring, e.g. timer fires while state==S_RXDATAOFFSET.
In C-code:
| No Formatcode |
|---|
#!c inline void activity_ri2() { uint8_t frequency; // change state changeState(S_RXDATAPREPARE); // calculate the frequency to transmit on frequency = calculateFrequency(ieee154e_vars.asn, schedule_getChannelOffset(ieee154e_vars.asn) ); // configure the radio for that frequency radio_setFrequency(frequency); // enable the radio in Rx mode. The radio does not actively listen yet. radio_rxEnable(); // arm rt2 ieee154etimer_schedule(DURATION_rt2); // change state changeState(S_RXDATAREADY); } |
rt2
Times when to give the 'go' signal to the radio to actively listen for packets.
...