Version 5 (modified by murphpo, 9 years ago) (diff)



The MAC High Framework provides a scheduler which enables future or periodic execution of arbitrary functions. The scheduler implements two sub-schedules: coarse, for occasional execution with timing accuracy of ±100ms and fine, for events requiring timing accuracy of ±100µs. Events should be added to the fine schedule only when absolutely necessary to avoid unnecessary overhead.

Example uses of scheduler

Beacons: the AP implementation uses the scheduler to periodically transmit beacon frames. This scheduler callback creates a new beacon frame and adds it the broadcast transmit queue.

Active Scan Timeout: the STA implementation uses the coarse scheduler to set a timeout when waiting for probe responses. This scheduler callback changes the node's center frequency to continue the search for the desired AP.

Local Traffic Generation: the LTG framework uses the scheduler to create arbitrary traffic according to the programmed inter-packet intervals